Viewing: osd_scrub.c
// SPDX-License-Identifier: GPL-2.0
/*
* Copyright (c) 2012, 2017, Intel Corporation.
*/
/*
* This file is part of Lustre, http://www.lustre.org/
*
* Top-level entry points into osd module
*
* The OI scrub is used for rebuilding Object Index files when restores MDT from
* file-level backup.
*
* The otable based iterator scans ldiskfs inode table to feed up layer LFSCK.
*
* Author: Fan Yong <yong.fan@whamcloud.com>
*/
#define DEBUG_SUBSYSTEM S_LFSCK
#include <linux/kthread.h>
#include <lustre_compat/linux/dcache.h>
#include <uapi/linux/lustre/lustre_idl.h>
#include <lustre_disk.h>
#include <dt_object.h>
#include <linux/xattr.h>
#include <lustre_scrub.h>
#include <lustre_nodemap.h>
#include "osd_internal.h"
#include "osd_oi.h"
#include "osd_scrub.h"
#define OSD_OTABLE_MAX_HASH 0x00000000ffffffffULL
/* high priority inconsistent items list APIs */
#define SCRUB_BAD_OIMAP_DECAY_INTERVAL 60
/**
* osd_scrub_oi_insert() - Add mapping into scrub.os_inconsistent_item list,
* and the OI scrub thread will fix them in priority.
* @dev: OSD device
* @fid: FID for object (being inserted)
* @id: Target osd_indode_id
* @insert: insert(1) or update(0) mapping
*
* Return:
* * %0 on success
* * %negative on failure
*/
int osd_scrub_oi_insert(struct osd_device *dev, const struct lu_fid *fid,
struct osd_inode_id *id, int insert)
{
struct osd_inconsistent_item *oii;
struct osd_scrub *oscrub = &dev->od_scrub;
struct lustre_scrub *lscrub = &oscrub->os_scrub;
int wakeup = 0;
ENTRY;
OBD_ALLOC_PTR(oii);
if (unlikely(oii == NULL))
RETURN(-ENOMEM);
INIT_LIST_HEAD(&oii->oii_list);
oii->oii_cache.oic_fid = *fid;
oii->oii_cache.oic_lid = *id;
oii->oii_cache.oic_dev = dev;
oii->oii_insert = insert;
spin_lock(&lscrub->os_lock);
if (lscrub->os_partial_scan) {
__u64 now = ktime_get_real_seconds();
/* If there haven't been errors in a long time,
* decay old count until either the errors are
* gone or we reach the current interval.
*/
while (unlikely(oscrub->os_bad_oimap_count > 0 &&
oscrub->os_bad_oimap_time +
SCRUB_BAD_OIMAP_DECAY_INTERVAL < now)) {
oscrub->os_bad_oimap_count >>= 1;
oscrub->os_bad_oimap_time +=
SCRUB_BAD_OIMAP_DECAY_INTERVAL;
}
oscrub->os_bad_oimap_time = now;
if (++oscrub->os_bad_oimap_count >
dev->od_full_scrub_threshold_rate)
lscrub->os_full_scrub = 1;
}
if (list_empty(&lscrub->os_inconsistent_items)) {
wakeup = 1;
} else {
struct osd_inconsistent_item *tmp;
list_for_each_entry(tmp, &lscrub->os_inconsistent_items,
oii_list) {
if (lu_fid_eq(fid, &tmp->oii_cache.oic_fid)) {
spin_unlock(&lscrub->os_lock);
OBD_FREE_PTR(oii);
RETURN(0);
}
}
}
list_add_tail(&oii->oii_list, &lscrub->os_inconsistent_items);
spin_unlock(&lscrub->os_lock);
if (wakeup)
wake_up_var(lscrub);
RETURN(0);
}
/* if item could not be repaired, add it to the os_stale_items list to avoid
* triggering scrub repeatedly.
*/
static inline void osd_scrub_oi_mark_stale(struct lustre_scrub *scrub,
struct osd_inconsistent_item *oii)
{
spin_lock(&scrub->os_lock);
list_move_tail(&oii->oii_list, &scrub->os_stale_items);
spin_unlock(&scrub->os_lock);
}
/* OI of \a fid may be marked stale, and if its mapping is scrubbed, remove it
* from os_stale_items list.
*/
bool osd_scrub_oi_resurrect(struct lustre_scrub *scrub,
const struct lu_fid *fid)
{
struct osd_inconsistent_item *oii;
bool resurrected = false;
if (list_empty(&scrub->os_stale_items))
return resurrected;
spin_lock(&scrub->os_lock);
list_for_each_entry(oii, &scrub->os_stale_items, oii_list) {
if (lu_fid_eq(fid, &oii->oii_cache.oic_fid)) {
list_del(&oii->oii_list);
OBD_FREE_PTR(oii);
resurrected = true;
break;
}
}
spin_unlock(&scrub->os_lock);
return resurrected;
}
static void osd_scrub_ois_fini(struct lustre_scrub *scrub,
struct list_head *list)
{
struct osd_inconsistent_item *oii;
struct osd_inconsistent_item *tmp;
spin_lock(&scrub->os_lock);
list_for_each_entry_safe(oii, tmp, list, oii_list) {
list_del(&oii->oii_list);
OBD_FREE_PTR(oii);
}
spin_unlock(&scrub->os_lock);
}
static inline int osd_scrub_has_window(struct lustre_scrub *scrub,
struct osd_otable_cache *ooc)
{
return scrub->os_pos_current < ooc->ooc_pos_preload + SCRUB_WINDOW_SIZE;
}
/**
* osd_scrub_refresh_mapping() - update/insert/delete the specified OI mapping
* (@fid @id) according to the ops
* @info: thread environment
* @dev: OSD device
* @fid: FID for object (OI mapping is being updated/insert/deleted)
* @id: Target osd_indode_id
* @ops: Operation
* @force: %True actual scrub will be done
* @flags: flags for operation
* @exist: if target is already there [out]
*
* Return:
* * %1 changed nothing
* * %0 changed successfully
* * %negative on error
*/
int osd_scrub_refresh_mapping(struct osd_thread_info *info,
struct osd_device *dev,
const struct lu_fid *fid,
const struct osd_inode_id *id,
int ops, bool force,
enum oi_check_flags flags, bool *exist)
{
handle_t *th;
int rc;
ENTRY;
if (dev->od_scrub.os_scrub.os_file.sf_param & SP_DRYRUN && !force)
RETURN(0);
/* DTO_INDEX_INSERT is enough for other two ops:
* delete/update, but save stack. */
th = osd_journal_start_sb(osd_sb(dev), LDISKFS_HT_MISC,
osd_dto_credits_noquota[DTO_INDEX_INSERT]);
if (IS_ERR(th)) {
rc = PTR_ERR(th);
CWARN("%s: fail to start trans for scrub op %d "
DFID" => %u/%u: rc = %d\n", osd_name(dev), ops,
PFID(fid), id ? id->oii_ino : -1, id ? id->oii_gen : -1,
rc);
RETURN(rc);
}
switch (ops) {
case DTO_INDEX_UPDATE:
rc = osd_oi_update(info, dev, fid, id, th, flags);
if (unlikely(rc == -ENOENT)) {
/* Some unlink thread may removed the OI mapping. */
rc = 1;
}
break;
case DTO_INDEX_INSERT:
rc = osd_oi_insert(info, dev, fid, id, th, flags, exist);
if (unlikely(rc == -EEXIST)) {
rc = 1;
/* XXX: There are trouble things when adding OI
* mapping for IGIF object, which may cause
* multiple objects to be mapped to the same
* IGIF formatted FID. Consider the following
* situations:
*
* 1) The MDT is upgrading from 1.8 device.
* The OI scrub generates IGIF FID1 for the
* OBJ1 and adds the OI mapping.
*
* 2) For some reason, the OI scrub does not
* process all the IGIF objects completely.
*
* 3) The MDT is backuped and restored against
* this device.
*
* 4) When the MDT mounts up, the OI scrub will
* try to rebuild the OI files. For some IGIF
* object, OBJ2, which was not processed by the
* OI scrub before the backup/restore, and the
* new generated IGIF formatted FID may be just
* the FID1, the same as OBJ1.
*
* Under such case, the OI scrub cannot know how
* to generate new FID for the OBJ2.
*
* Currently, we do nothing for that. One possible
* solution is to generate new normal FID for the
* conflict object.
*
* Anyway, it is rare, only exists in theory. */
}
break;
case DTO_INDEX_DELETE:
rc = osd_oi_delete(info, dev, fid, th, flags);
if (rc == -ENOENT) {
/* It is normal that the unlink thread has removed the
* OI mapping already. */
rc = 1;
}
break;
default:
LASSERTF(0, "Unexpected ops %d\n", ops);
break;
}
ldiskfs_journal_stop(th);
if (rc < 0)
CDEBUG(D_LFSCK, "%s: fail to refresh OI map for scrub op %d "
DFID" => %u/%u: rc = %d\n", osd_name(dev), ops,
PFID(fid), id ? id->oii_ino : -1, id ? id->oii_gen : -1,
rc);
RETURN(rc);
}
static int
osd_scrub_check_update(struct osd_thread_info *info, struct osd_device *dev,
struct osd_idmap_cache *oic, int val)
{
struct lustre_scrub *scrub = &dev->od_scrub.os_scrub;
struct scrub_file *sf = &scrub->os_file;
struct lu_fid *fid = &oic->oic_fid;
struct osd_inode_id *lid = &oic->oic_lid;
struct osd_inode_id *lid2 = &info->oti_id;
struct osd_inconsistent_item *oii = NULL;
struct inode *inode = NULL;
int ops = DTO_INDEX_UPDATE;
bool exist = false;
bool bad_inode = false;
int flags = 0;
int rc;
ENTRY;
down_write(&scrub->os_rwsem);
/* remove IDIF support to simplify logic */
if (val == SCRUB_NEXT_OSTOBJ_OLD)
GOTO(out, rc = -EOPNOTSUPP);
if (val == SCRUB_NEXT_OSTOBJ)
flags = OI_KNOWN_ON_OST;
scrub->os_new_checked++;
if (val < 0)
GOTO(out, rc = val);
if (scrub->os_in_prior) {
oii = list_entry(oic, struct osd_inconsistent_item,
oii_cache);
if (CFS_FAIL_CHECK(OBD_FAIL_OSD_SCRUB_STALE))
GOTO(out, rc = -ESTALE);
}
if (lid->oii_ino < sf->sf_pos_latest_start && !oii)
GOTO(skip, rc = 0);
if (lid->oii_ino < LDISKFS_FIRST_INO(osd_sb(dev)))
GOTO(out, rc = -ENOENT);
if (fid_is_igif(fid))
sf->sf_items_igif++;
/* verify inode */
inode = osd_iget(info, dev, lid, 0);
if (IS_ERR(inode)) {
rc = PTR_ERR(inode);
/* someone removed the inode. */
if (rc == -ENOENT || rc == -ESTALE)
bad_inode = true;
else
GOTO(out, rc);
} else if (val == SCRUB_NEXT_NOLMA) {
if (!scrub->os_convert_igif ||
CFS_FAIL_CHECK(OBD_FAIL_FID_NOLMA))
GOTO(out, rc = 0);
/* set LMA if missing */
sf->sf_flags |= SF_UPGRADE;
if (!(sf->sf_param & SP_DRYRUN)) {
rc = osd_ea_fid_set(info, inode, fid, 0, 0);
if (rc)
GOTO(out, rc);
}
}
/* checking existing mapping */
rc = osd_oi_lookup(info, dev, fid, lid2, flags);
if (rc != 0) {
/* insert if mapping doesn't exist */
if (rc == -ENOENT)
ops = DTO_INDEX_INSERT;
else if (rc != -ESTALE)
GOTO(out, rc);
if (bad_inode)
GOTO(skip, rc = 0);
if (val == SCRUB_NEXT_OSTOBJ)
sf->sf_flags |= SF_INCONSISTENT;
} else if (osd_id_eq(lid, lid2)) {
/* mapping matches */
if (bad_inode) {
/* delete mapping if it's stale */
rc = osd_scrub_refresh_mapping(info, dev, fid, lid,
DTO_INDEX_DELETE, false, flags, NULL);
CDEBUG(D_LFSCK,
"%s: delete stale OI "DFID" -> %u/%u: rc = %d\n",
osd_dev2name(dev), PFID(fid), lid->oii_ino,
lid->oii_gen, rc);
}
GOTO(out, rc);
} else {
struct inode *inode2;
struct lu_fid *fid2;
/* mapping mismatch */
if (!scrub->os_partial_scan) {
spin_lock(&scrub->os_lock);
scrub->os_full_speed = 1;
spin_unlock(&scrub->os_lock);
}
sf->sf_flags |= SF_INCONSISTENT;
/* if new inode is bad, keep existing mapping */
if (bad_inode)
GOTO(skip, rc = 0);
/* verify existing mapping */
inode2 = osd_iget(info, dev, lid2, 0);
if (IS_ERR(inode2)) {
rc = PTR_ERR(inode2);
if (rc == -ENOENT || rc == -ESTALE)
goto delete;
GOTO(out, rc);
}
rc = osd_get_lma(info, inode2, &info->oti_obj_dentry,
&info->oti_ost_attrs);
if (rc) {
iput(inode2);
if (rc == -ENODATA)
goto delete;
GOTO(out, rc);
}
/* if inode2 looks better, keep existing mapping */
fid2 = &info->oti_ost_attrs.loa_lma.lma_self_fid;
if ((rc == 0 && lu_fid_eq(fid, fid2)) &&
((inode->i_size == 0 && inode2->i_size > 0 &&
inode_get_mtime_sec(inode) == inode_get_mtime_sec(inode2)) ||
inode_get_mtime_sec(inode) < inode_get_mtime_sec(inode2))) {
iput(inode2);
GOTO(skip, rc);
}
iput(inode2);
delete:
/* otherwise delete existing mapping */
CDEBUG(D_LFSCK, "%s: delete stale OI "DFID" -> %u/%u\n",
osd_dev2name(dev), PFID(fid), lid2->oii_ino,
lid2->oii_gen);
rc = osd_scrub_refresh_mapping(info, dev, fid, lid2,
DTO_INDEX_DELETE, false, flags, NULL);
if (rc < 0)
GOTO(out, rc);
/* and then insert new one */
ops = DTO_INDEX_INSERT;
}
LASSERT(ops == DTO_INDEX_INSERT || ops == DTO_INDEX_UPDATE);
CDEBUG(D_LFSCK, "%s: %s OI "DFID" -> %u/%u\n",
osd_dev2name(dev), ops == DTO_INDEX_INSERT ? "insert" : "update",
PFID(fid), lid->oii_ino, lid->oii_gen);
rc = osd_scrub_refresh_mapping(info, dev, fid, lid, ops, false, flags,
&exist);
if (rc == 0) {
if (scrub->os_in_prior)
sf->sf_items_updated_prior++;
else
sf->sf_items_updated++;
if (ops == DTO_INDEX_INSERT && val == 0 && !exist) {
int idx = osd_oi_fid2idx(dev, fid);
sf->sf_flags |= SF_RECREATED;
if (unlikely(!ldiskfs_test_bit(idx, sf->sf_oi_bitmap)))
ldiskfs_set_bit(idx, sf->sf_oi_bitmap);
}
}
GOTO(out, rc);
out:
if (rc < 0) {
sf->sf_items_failed++;
if (lid->oii_ino >= LDISKFS_FIRST_INO(osd_sb(dev)) &&
(sf->sf_pos_first_inconsistent == 0 ||
sf->sf_pos_first_inconsistent > lid->oii_ino))
sf->sf_pos_first_inconsistent = lid->oii_ino;
} else {
if (!oii && !CFS_FAIL_CHECK(OBD_FAIL_OSD_SCRUB_STALE)) {
if (osd_scrub_oi_resurrect(scrub, fid))
CDEBUG(D_LFSCK,
"%s: resurrect OI "DFID" -> %u/%u\n",
osd_dev2name(dev), PFID(fid),
lid->oii_ino, lid->oii_gen);
} else if (oii) {
/* release fixed inconsistent item */
CDEBUG(D_LFSCK,
"%s: inconsistent OI "DFID" -> %u/%u %s\n",
osd_dev2name(dev), PFID(fid), lid->oii_ino,
lid->oii_gen, bad_inode ? "deleted" : "fixed");
spin_lock(&scrub->os_lock);
list_del_init(&oii->oii_list);
spin_unlock(&scrub->os_lock);
OBD_FREE_PTR(oii);
oii = NULL;
}
rc = 0;
}
skip:
if (oii) {
/* something strange with item, moving to stale */
osd_scrub_oi_mark_stale(scrub, oii);
CDEBUG(D_LFSCK,
"%s: fix inconsistent OI "DFID" -> %u/%u failed: %d\n",
osd_dev2name(dev), PFID(fid), lid->oii_ino,
lid->oii_gen, rc);
}
up_write(&scrub->os_rwsem);
if (!IS_ERR_OR_NULL(inode))
iput(inode);
RETURN(sf->sf_param & SP_FAILOUT ? rc : 0);
}
/* iteration engine */
typedef int (*osd_iit_next_policy)(struct osd_thread_info *info,
struct osd_device *dev,
struct osd_iit_param *param,
struct osd_idmap_cache **oic,
const bool noslot);
typedef int (*osd_iit_exec_policy)(struct osd_thread_info *info,
struct osd_device *dev,
struct osd_iit_param *param,
struct osd_idmap_cache *oic,
bool *noslot, int rc);
static int osd_iit_next(struct osd_iit_param *param, __u64 *pos)
{
__u32 offset;
again:
param->offset = ldiskfs_find_next_bit(param->bitmap->b_data,
LDISKFS_INODES_PER_GROUP(param->sb), param->offset);
if (param->offset >= LDISKFS_INODES_PER_GROUP(param->sb)) {
*pos = 1 + (param->bg+1) * LDISKFS_INODES_PER_GROUP(param->sb);
return SCRUB_NEXT_BREAK;
}
offset = param->offset++;
if (unlikely(*pos == param->gbase + offset && *pos != param->start)) {
/* We should NOT find the same object more than once. */
CERROR("%s: scan the same object multiple times at the pos: "
"group = %u, base = %u, offset = %u, start = %u\n",
osd_sb2name(param->sb), (__u32)param->bg, param->gbase,
offset, param->start);
goto again;
}
*pos = param->gbase + offset;
return 0;
}
/**
* osd_scrub_check_local_fldb() - Check local fldb
* @info: thread environment
* @dev: OSD device
* @fid: unused
*
* Return:
* * %SCRUB_NEXT_OSTOBJ_OLD FID-on-OST
* * %0 FID-on-MDT
*/
static int osd_scrub_check_local_fldb(struct osd_thread_info *info,
struct osd_device *dev,
struct lu_fid *fid)
{
/* XXX: The initial OI scrub will scan the top level /O to generate
* a small local FLDB according to the <seq>. If the given FID
* is in the local FLDB, then it is FID-on-OST; otherwise it's
* quite possible for FID-on-MDT. */
if (dev->od_is_ost)
return SCRUB_NEXT_OSTOBJ_OLD;
return 0;
}
static int osd_scrub_get_fid(struct osd_thread_info *info,
struct osd_device *dev, struct inode *inode,
struct lu_fid *fid, bool scrub)
{
struct lustre_mdt_attrs *lma = &info->oti_ost_attrs.loa_lma;
bool has_lma = false;
int rc;
rc = osd_get_lma(info, inode, &info->oti_obj_dentry,
&info->oti_ost_attrs);
if (rc == 0) {
has_lma = true;
if (lma->lma_compat & LMAC_NOT_IN_OI ||
lma->lma_incompat & LMAI_AGENT)
return SCRUB_NEXT_CONTINUE;
*fid = lma->lma_self_fid;
if (!scrub)
return 0;
if (lma->lma_compat & LMAC_FID_ON_OST)
return SCRUB_NEXT_OSTOBJ;
if (fid_is_idif(fid))
return SCRUB_NEXT_OSTOBJ_OLD;
/* For local object. */
if (fid_is_internal(fid))
return 0;
/* For external visible MDT-object with non-normal FID. */
if (fid_is_namespace_visible(fid) && !fid_is_norm(fid))
return 0;
/* For the object with normal FID, it may be MDT-object,
* or may be 2.4 OST-object, need further distinguish.
* Fall through to next section. */
}
if (rc == -ENODATA || rc == 0) {
rc = osd_get_idif(info, inode, &info->oti_obj_dentry, fid);
if (rc == 0) {
if (scrub)
/* It is 2.3 or older OST-object. */
rc = SCRUB_NEXT_OSTOBJ_OLD;
return rc;
}
if (rc > 0) {
if (!has_lma)
/* It is FID-on-OST, but we do not know how
* to generate its FID, ignore it directly. */
rc = SCRUB_NEXT_CONTINUE;
else
/* It is 2.4 or newer OST-object. */
rc = SCRUB_NEXT_OSTOBJ_OLD;
return rc;
}
if (rc != -ENODATA)
return rc;
if (!has_lma) {
if (dev->od_scrub.os_scrub.os_convert_igif) {
lu_igif_build(fid, inode->i_ino,
inode->i_generation);
if (scrub)
rc = SCRUB_NEXT_NOLMA;
else
rc = 0;
} else {
/* It may be FID-on-OST, or may be FID for
* non-MDT0, anyway, we do not know how to
* generate its FID, ignore it directly. */
rc = SCRUB_NEXT_CONTINUE;
}
return rc;
}
/* For OI scrub case only: the object has LMA but has no ff
* (or ff crashed). It may be MDT-object, may be OST-object
* with crashed ff. The last check is local FLDB. */
rc = osd_scrub_check_local_fldb(info, dev, fid);
}
return rc;
}
static int osd_iit_iget(struct osd_thread_info *info, struct osd_device *dev,
struct lu_fid *fid, struct osd_inode_id *lid, __u32 pos,
struct super_block *sb, bool is_scrub)
{
struct lustre_scrub *scrub = &dev->od_scrub.os_scrub;
struct inode *inode;
int index;
int rc;
ENTRY;
/* Not handle the backend root object and agent parent object.
* They are neither visible to namespace nor have OI mappings. */
if (unlikely(pos == osd_sb(dev)->s_root->d_inode->i_ino ||
is_remote_parent_ino(dev, pos)))
RETURN(SCRUB_NEXT_CONTINUE);
/* Skip project quota inode since it is greater than s_first_ino. */
if (ldiskfs_has_feature_project(sb) &&
pos == le32_to_cpu(LDISKFS_SB(sb)->s_es->s_prj_quota_inum))
RETURN(SCRUB_NEXT_CONTINUE);
osd_id_gen(lid, pos, OSD_OII_NOGEN);
inode = osd_iget(info, dev, lid, LDISKFS_IGET_NO_CHECKS);
if (IS_ERR(inode)) {
rc = PTR_ERR(inode);
/* The inode may be removed after bitmap searching, or the
* file is new created without inode initialized yet.
* LU-15754: After "new primitive: discard_new_inode()" change
* in the kernel find_inode_fast() returns -ESTALE, but
* iget_locked replaces it to the NULL and finally
* ldiskfs_inode_attach_jinode() returns -ENOMEM
* Let's skip an inode if -ENOMEM returned.
*/
if (rc == -ENOENT || rc == -ESTALE || rc == -ENOMEM)
RETURN(SCRUB_NEXT_CONTINUE);
CDEBUG(D_LFSCK, "%s: fail to read inode, ino# = %u: "
"rc = %d\n", osd_dev2name(dev), pos, rc);
RETURN(rc);
}
if (dev->od_is_ost && S_ISREG(inode->i_mode) && inode->i_nlink > 1)
dev->od_scrub.os_scrub.os_has_ml_file = 1;
if (is_scrub &&
ldiskfs_test_inode_state(inode, LDISKFS_STATE_LUSTRE_NOSCRUB)) {
/* Only skip it for the first OI scrub accessing. */
ldiskfs_clear_inode_state(inode, LDISKFS_STATE_LUSTRE_NOSCRUB);
GOTO(put, rc = SCRUB_NEXT_NOSCRUB);
}
rc = osd_scrub_get_fid(info, dev, inode, fid, is_scrub);
if (rc >= 0 && scrub->os_ls_count > 0 && fid_is_local_storage(fid)) {
index = 0;
for (index = 0; index < scrub->os_ls_count; index++)
if (scrub->os_ls_fids[index].f_seq == fid->f_seq)
break;
if (index < scrub->os_ls_count &&
scrub->os_ls_fids[index].f_oid < fid->f_oid)
scrub->os_ls_fids[index].f_oid = fid->f_oid;
}
GOTO(put, rc);
put:
iput(inode);
return rc;
}
static int osd_scrub_next(struct osd_thread_info *info, struct osd_device *dev,
struct osd_iit_param *param,
struct osd_idmap_cache **oic, const bool noslot)
{
struct lustre_scrub *scrub = &dev->od_scrub.os_scrub;
struct lu_fid *fid;
struct osd_inode_id *lid;
int rc;
if (CFS_FAIL_CHECK(OBD_FAIL_OSD_SCRUB_DELAY) && cfs_fail_val > 0)
wait_var_event_timeout(
scrub,
!list_empty(&scrub->os_inconsistent_items) ||
kthread_should_stop(),
cfs_time_seconds(cfs_fail_val));
if (CFS_FAIL_CHECK(OBD_FAIL_OSD_SCRUB_CRASH)) {
spin_lock(&scrub->os_lock);
scrub->os_running = 0;
spin_unlock(&scrub->os_lock);
return SCRUB_NEXT_CRASH;
}
if (CFS_FAIL_CHECK(OBD_FAIL_OSD_SCRUB_FATAL))
return SCRUB_NEXT_FATAL;
if (kthread_should_stop())
return SCRUB_NEXT_EXIT;
if (!list_empty(&scrub->os_inconsistent_items)) {
spin_lock(&scrub->os_lock);
if (likely(!list_empty(&scrub->os_inconsistent_items))) {
struct osd_inconsistent_item *oii;
oii = list_first_entry(&scrub->os_inconsistent_items,
struct osd_inconsistent_item,
oii_list);
*oic = &oii->oii_cache;
scrub->os_in_prior = 1;
spin_unlock(&scrub->os_lock);
return 0;
}
spin_unlock(&scrub->os_lock);
}
if (noslot)
return SCRUB_NEXT_WAIT;
rc = osd_iit_next(param, &scrub->os_pos_current);
if (rc != 0)
return rc;
*oic = &dev->od_scrub.os_oic;
fid = &(*oic)->oic_fid;
lid = &(*oic)->oic_lid;
rc = osd_iit_iget(info, dev, fid, lid,
scrub->os_pos_current, param->sb, true);
return rc;
}
static int osd_preload_next(struct osd_thread_info *info,
struct osd_device *dev, struct osd_iit_param *param,
struct osd_idmap_cache **oic, const bool noslot)
{
struct osd_otable_cache *ooc = &dev->od_otable_it->ooi_cache;
struct lustre_scrub *scrub = &dev->od_scrub.os_scrub;
int rc;
if (scrub->os_running &&
ooc->ooc_pos_preload >= scrub->os_pos_current)
return SCRUB_NEXT_EXIT;
rc = osd_iit_next(param, &ooc->ooc_pos_preload);
if (rc)
return rc;
rc = osd_iit_iget(info, dev,
&ooc->ooc_cache[ooc->ooc_producer_idx].oic_fid,
&ooc->ooc_cache[ooc->ooc_producer_idx].oic_lid,
ooc->ooc_pos_preload, param->sb, false);
return rc;
}
static inline int
osd_scrub_wakeup(struct lustre_scrub *scrub, struct osd_otable_it *it)
{
spin_lock(&scrub->os_lock);
if (osd_scrub_has_window(scrub, &it->ooi_cache) ||
!list_empty(&scrub->os_inconsistent_items) ||
it->ooi_waiting || kthread_should_stop())
scrub->os_waiting = 0;
else
scrub->os_waiting = 1;
spin_unlock(&scrub->os_lock);
return !scrub->os_waiting;
}
static int osd_scrub_exec(struct osd_thread_info *info, struct osd_device *dev,
struct osd_iit_param *param,
struct osd_idmap_cache *oic, bool *noslot, int rc)
{
struct lustre_scrub *scrub = &dev->od_scrub.os_scrub;
struct scrub_file *sf = &scrub->os_file;
struct osd_otable_it *it = dev->od_otable_it;
struct osd_otable_cache *ooc = it ? &it->ooi_cache : NULL;
switch (rc) {
case SCRUB_NEXT_NOSCRUB:
down_write(&scrub->os_rwsem);
scrub->os_new_checked++;
sf->sf_items_noscrub++;
up_write(&scrub->os_rwsem);
case SCRUB_NEXT_CONTINUE:
case SCRUB_NEXT_WAIT:
goto wait;
}
rc = osd_scrub_check_update(info, dev, oic, rc);
if (rc != 0) {
spin_lock(&scrub->os_lock);
scrub->os_in_prior = 0;
spin_unlock(&scrub->os_lock);
return rc;
}
rc = scrub_checkpoint(info->oti_env, scrub);
if (rc) {
CDEBUG(D_LFSCK, "%s: fail to checkpoint, pos = %llu: "
"rc = %d\n", osd_scrub2name(scrub),
scrub->os_pos_current, rc);
/* Continue, as long as the scrub itself can go ahead. */
}
if (scrub->os_in_prior) {
spin_lock(&scrub->os_lock);
scrub->os_in_prior = 0;
spin_unlock(&scrub->os_lock);
return 0;
}
wait:
if (it != NULL && it->ooi_waiting && ooc != NULL &&
ooc->ooc_pos_preload < scrub->os_pos_current) {
spin_lock(&scrub->os_lock);
it->ooi_waiting = 0;
wake_up_var(scrub);
spin_unlock(&scrub->os_lock);
}
if (rc == SCRUB_NEXT_CONTINUE)
return 0;
if (scrub->os_full_speed || !ooc || osd_scrub_has_window(scrub, ooc)) {
*noslot = false;
return 0;
}
if (it)
wait_var_event(scrub, osd_scrub_wakeup(scrub, it));
if (!ooc || osd_scrub_has_window(scrub, ooc))
*noslot = false;
else
*noslot = true;
return 0;
}
static int osd_preload_exec(struct osd_thread_info *info,
struct osd_device *dev, struct osd_iit_param *param,
struct osd_idmap_cache *oic, bool *noslot, int rc)
{
struct osd_otable_cache *ooc = &dev->od_otable_it->ooi_cache;
if (rc == 0) {
ooc->ooc_cached_items++;
ooc->ooc_producer_idx = (ooc->ooc_producer_idx + 1) &
~OSD_OTABLE_IT_CACHE_MASK;
}
return rc > 0 ? 0 : rc;
}
#define SCRUB_IT_ALL 1
#define SCRUB_IT_CRASH 2
static void osd_scrub_join(const struct lu_env *env, struct osd_device *dev,
__u32 flags, bool inconsistent)
{
struct lustre_scrub *scrub = &dev->od_scrub.os_scrub;
struct scrub_file *sf = &scrub->os_file;
int rc;
ENTRY;
LASSERT(!(flags & SS_AUTO_PARTIAL));
down_write(&scrub->os_rwsem);
spin_lock(&scrub->os_lock);
scrub->os_in_join = 1;
if (flags & SS_SET_FAILOUT)
sf->sf_param |= SP_FAILOUT;
else if (flags & SS_CLEAR_FAILOUT)
sf->sf_param &= ~SP_FAILOUT;
if (flags & SS_SET_DRYRUN)
sf->sf_param |= SP_DRYRUN;
else if (flags & SS_CLEAR_DRYRUN)
sf->sf_param &= ~SP_DRYRUN;
if (flags & SS_RESET) {
scrub_file_reset(scrub, dev->od_uuid,
inconsistent ? SF_INCONSISTENT : 0);
sf->sf_status = SS_SCANNING;
}
if (sf->sf_flags & (SF_RECREATED | SF_INCONSISTENT | SF_UPGRADE))
scrub->os_full_speed = 1;
else
scrub->os_full_speed = 0;
if (flags & SS_AUTO_FULL) {
sf->sf_flags |= SF_AUTO;
scrub->os_full_speed = 1;
}
spin_unlock(&scrub->os_lock);
scrub->os_new_checked = 0;
if (sf->sf_pos_last_checkpoint != 0)
sf->sf_pos_latest_start = sf->sf_pos_last_checkpoint + 1;
else
sf->sf_pos_latest_start = LDISKFS_FIRST_INO(osd_sb(dev)) + 1;
scrub->os_pos_current = sf->sf_pos_latest_start;
sf->sf_time_latest_start = ktime_get_real_seconds();
sf->sf_time_last_checkpoint = sf->sf_time_latest_start;
sf->sf_pos_last_checkpoint = sf->sf_pos_latest_start - 1;
rc = scrub_file_store(env, scrub);
spin_lock(&scrub->os_lock);
scrub->os_waiting = 0;
scrub->os_paused = 0;
scrub->os_partial_scan = 0;
scrub->os_in_join = 0;
scrub->os_full_scrub = 0;
spin_unlock(&scrub->os_lock);
wake_up_var(scrub);
up_write(&scrub->os_rwsem);
CDEBUG(D_LFSCK, "%s: joined in the OI scrub with flag %u: rc = %d\n",
osd_scrub2name(scrub), flags, rc);
EXIT;
}
static int osd_inode_iteration(struct osd_thread_info *info,
struct osd_device *dev, __u32 max, bool preload)
{
struct lustre_scrub *scrub = &dev->od_scrub.os_scrub;
struct scrub_file *sf = &scrub->os_file;
osd_iit_next_policy next;
osd_iit_exec_policy exec;
__u64 *pos;
__u64 *count;
struct osd_iit_param *param;
__u32 limit;
int rc;
bool noslot = true;
ENTRY;
if (preload)
goto full;
param = &dev->od_scrub.os_iit_param;
memset(param, 0, sizeof(*param));
param->sb = osd_sb(dev);
while (scrub->os_partial_scan && !scrub->os_in_join) {
struct osd_idmap_cache *oic = NULL;
rc = osd_scrub_next(info, dev, param, &oic, noslot);
switch (rc) {
case SCRUB_NEXT_EXIT:
RETURN(0);
case SCRUB_NEXT_CRASH:
RETURN(SCRUB_IT_CRASH);
case SCRUB_NEXT_FATAL:
RETURN(-EINVAL);
case SCRUB_NEXT_WAIT: {
struct kstatfs *ksfs = &info->oti_ksfs;
__u64 saved_flags;
if (dev->od_full_scrub_ratio == OFSR_NEVER ||
unlikely(sf->sf_items_updated_prior == 0))
goto wait;
if (dev->od_full_scrub_ratio == OFSR_DIRECTLY ||
scrub->os_full_scrub) {
osd_scrub_join(info->oti_env, dev,
SS_AUTO_FULL | SS_RESET, true);
goto full;
}
rc = param->sb->s_op->statfs(param->sb->s_root, ksfs);
if (rc == 0) {
__u64 used = ksfs->f_files - ksfs->f_ffree;
used = div64_u64(used, sf->sf_items_updated_prior);
/* If we hit too much inconsistent OI
* mappings during the partial scan,
* then scan the device completely. */
if (used < dev->od_full_scrub_ratio) {
osd_scrub_join(info->oti_env, dev,
SS_AUTO_FULL | SS_RESET, true);
goto full;
}
}
wait:
if (CFS_FAIL_CHECK(OBD_FAIL_OSD_SCRUB_DELAY) &&
cfs_fail_val > 0)
continue;
saved_flags = sf->sf_flags;
sf->sf_flags &= ~(SF_RECREATED | SF_INCONSISTENT |
SF_UPGRADE | SF_AUTO);
sf->sf_status = SS_COMPLETED;
wait_var_event(
scrub,
kthread_should_stop() ||
!scrub->os_partial_scan ||
scrub->os_in_join ||
!list_empty(&scrub->os_inconsistent_items));
sf->sf_flags = saved_flags;
sf->sf_status = SS_SCANNING;
if (kthread_should_stop())
RETURN(0);
if (!scrub->os_partial_scan || scrub->os_in_join)
goto full;
continue;
}
default:
LASSERTF(rc == 0, "rc = %d\n", rc);
osd_scrub_exec(info, dev, param, oic, &noslot, rc);
break;
}
}
full:
if (!preload) {
wait_var_event(scrub,
kthread_should_stop() ||
!scrub->os_in_join);
if (kthread_should_stop())
RETURN(0);
}
noslot = false;
if (!preload) {
next = osd_scrub_next;
exec = osd_scrub_exec;
pos = &scrub->os_pos_current;
count = &scrub->os_new_checked;
param->start = *pos;
param->bg = (*pos - 1) / LDISKFS_INODES_PER_GROUP(param->sb);
param->offset =
(*pos - 1) % LDISKFS_INODES_PER_GROUP(param->sb);
param->gbase =
1 + param->bg * LDISKFS_INODES_PER_GROUP(param->sb);
} else {
struct osd_otable_cache *ooc = &dev->od_otable_it->ooi_cache;
next = osd_preload_next;
exec = osd_preload_exec;
pos = &ooc->ooc_pos_preload;
count = &ooc->ooc_cached_items;
param = &dev->od_otable_it->ooi_iit_param;
}
rc = 0;
limit = le32_to_cpu(LDISKFS_SB(osd_sb(dev))->s_es->s_inodes_count);
while (*pos <= limit && *count < max) {
struct ldiskfs_group_desc *desc;
bool next_group = false;
desc = ldiskfs_get_group_desc(param->sb, param->bg, NULL);
if (!desc)
RETURN(-EIO);
if (desc->bg_flags & cpu_to_le16(LDISKFS_BG_INODE_UNINIT)) {
next_group = true;
goto next_group;
}
param->bitmap = ldiskfs_read_inode_bitmap(param->sb, param->bg);
if (IS_ERR_OR_NULL(param->bitmap)) {
if (param->bitmap) {
rc = PTR_ERR(param->bitmap);
param->bitmap = NULL;
} else {
rc = -EIO;
}
CERROR("%s: fail to read bitmap for %u, scrub will stop, urgent mode: rc = %d\n",
osd_scrub2name(scrub), (__u32)param->bg, rc);
GOTO(out, rc);
}
do {
struct osd_idmap_cache *oic = NULL;
if (param->offset +
ldiskfs_itable_unused_count(param->sb, desc) >=
LDISKFS_INODES_PER_GROUP(param->sb)) {
next_group = true;
goto next_group;
}
rc = next(info, dev, param, &oic, noslot);
switch (rc) {
case SCRUB_NEXT_BREAK:
next_group = true;
goto next_group;
case SCRUB_NEXT_EXIT:
brelse(param->bitmap);
RETURN(0);
case SCRUB_NEXT_CRASH:
brelse(param->bitmap);
RETURN(SCRUB_IT_CRASH);
case SCRUB_NEXT_FATAL:
brelse(param->bitmap);
RETURN(-EINVAL);
}
rc = exec(info, dev, param, oic, &noslot, rc);
} while (!rc && *pos <= limit && *count < max);
next_group:
if (param->bitmap) {
brelse(param->bitmap);
param->bitmap = NULL;
}
if (rc < 0)
GOTO(out, rc);
if (next_group) {
param->bg++;
param->offset = 0;
param->gbase = 1 +
param->bg * LDISKFS_INODES_PER_GROUP(param->sb);
*pos = param->gbase;
param->start = *pos;
}
}
if (*pos > limit)
RETURN(SCRUB_IT_ALL);
out:
RETURN(rc);
}
static int osd_otable_it_preload(const struct lu_env *env,
struct osd_otable_it *it)
{
struct osd_device *dev = it->ooi_dev;
struct lustre_scrub *scrub = &dev->od_scrub.os_scrub;
struct osd_otable_cache *ooc = &it->ooi_cache;
int rc;
ENTRY;
rc = osd_inode_iteration(osd_oti_get(env), dev,
OSD_OTABLE_IT_CACHE_SIZE, true);
if (rc == SCRUB_IT_ALL)
it->ooi_all_cached = 1;
if (scrub->os_waiting && osd_scrub_has_window(scrub, ooc)) {
spin_lock(&scrub->os_lock);
scrub->os_waiting = 0;
wake_up_var(scrub);
spin_unlock(&scrub->os_lock);
}
RETURN(rc < 0 ? rc : ooc->ooc_cached_items);
}
static int osd_scan_ml_file_main(const struct lu_env *env,
struct osd_device *dev);
static int osd_scan_O_main(const struct lu_env *env, struct osd_device *dev);
static int osd_scan_last_id_main(const struct lu_env *env,
struct osd_device *dev);
static int osd_scrub_main(void *args)
{
struct lu_env env;
struct osd_device *dev = (struct osd_device *)args;
struct lustre_scrub *scrub = &dev->od_scrub.os_scrub;
int rc, ret;
ENTRY;
rc = lu_env_init(&env, LCT_LOCAL | LCT_DT_THREAD);
if (rc != 0) {
CDEBUG(D_LFSCK, "%s: OI scrub fail to init env: rc = %d\n",
osd_scrub2name(scrub), rc);
GOTO(noenv, rc);
}
rc = scrub_thread_prep(&env, scrub, dev->od_uuid,
LDISKFS_FIRST_INO(osd_sb(dev)) + 1);
if (rc != 0) {
CDEBUG(D_LFSCK, "%s: OI scrub fail to scrub prep: rc = %d\n",
osd_scrub2name(scrub), rc);
GOTO(out, rc);
}
if (!scrub->os_full_speed && !scrub->os_partial_scan) {
struct osd_otable_it *it = dev->od_otable_it;
struct osd_otable_cache *ooc = &it->ooi_cache;
wait_var_event(scrub,
it->ooi_user_ready || kthread_should_stop());
if (kthread_should_stop())
GOTO(post, rc = 0);
scrub->os_pos_current = ooc->ooc_pos_preload;
}
CDEBUG(D_LFSCK, "%s: OI scrub start, flags = 0x%x, pos = %llu%s\n",
osd_scrub2name(scrub), scrub->os_start_flags,
scrub->os_pos_current,
scrub->os_file.sf_param & SP_DRYRUN ? " dryrun mode" : "");
scrub->os_ls_count = 0;
scrub->os_ls_size = 4;
OBD_ALLOC(scrub->os_ls_fids, scrub->os_ls_size * sizeof(struct lu_fid));
if (scrub->os_ls_fids == NULL)
GOTO(out, rc = -ENOMEM);
rc = osd_scan_O_main(&env, dev);
if (rc)
GOTO(out, rc);
rc = osd_inode_iteration(osd_oti_get(&env), dev, ~0U, false);
if (unlikely(rc == SCRUB_IT_CRASH)) {
spin_lock(&scrub->os_lock);
scrub->os_running = 0;
spin_unlock(&scrub->os_lock);
GOTO(out, rc = -EINVAL);
}
if (scrub->os_has_ml_file) {
ret = osd_scan_ml_file_main(&env, dev);
if (ret != 0)
GOTO(out, rc = ret);
}
ret = osd_scan_last_id_main(&env, dev);
if (ret != 0)
rc = ret;
GOTO(post, rc);
post:
if (rc > 0) {
dev->od_igif_inoi = 1;
dev->od_check_ff = 0;
}
rc = scrub_thread_post(&env, &dev->od_scrub.os_scrub, rc);
CDEBUG(D_LFSCK, "%s: OI scrub: stop, pos = %llu: rc = %d%s\n",
osd_scrub2name(scrub), scrub->os_pos_current, rc,
scrub->os_file.sf_param & SP_DRYRUN ? " dryrun mode" : "");
out:
osd_scrub_ois_fini(scrub, &scrub->os_inconsistent_items);
lu_env_fini(&env);
noenv:
spin_lock(&scrub->os_lock);
scrub->os_running = 0;
spin_unlock(&scrub->os_lock);
if (xchg(&scrub->os_task, NULL) == NULL)
/* scrub_stop() is waiting, we need to synchronize */
wait_var_event(scrub, kthread_should_stop());
wake_up_var(scrub);
/* a running iterator can be using os_ls_fids, so let's release
* only when we're asked to stop by that iterator */
if (scrub->os_ls_fids) {
OBD_FREE(scrub->os_ls_fids,
scrub->os_ls_size * sizeof(struct lu_fid));
scrub->os_ls_size = 0;
scrub->os_ls_count = 0;
scrub->os_ls_fids = NULL;
}
return rc;
}
/* initial OI scrub */
typedef int (*scandir_t)(struct osd_thread_info *, struct osd_device *,
struct dentry *, filldir_t filldir);
static FILLDIR_TYPE
osd_ios_varfid_fill(struct dir_context *buf, const char *name, int namelen,
loff_t offset, __u64 ino, unsigned int d_type);
static FILLDIR_TYPE
osd_ios_lf_fill(struct dir_context *buf, const char *name, int namelen,
loff_t offset, __u64 ino, unsigned int d_type);
static FILLDIR_TYPE
osd_ios_dl_fill(struct dir_context *buf, const char *name, int namelen,
loff_t offset, __u64 ino, unsigned int d_type);
static FILLDIR_TYPE
osd_ios_uld_fill(struct dir_context *buf, const char *name, int namelen,
loff_t offset, __u64 ino, unsigned int d_type);
static int
osd_ios_general_scan(struct osd_thread_info *info, struct osd_device *dev,
struct dentry *dentry, filldir_t filldir);
static int
osd_ios_ROOT_scan(struct osd_thread_info *info, struct osd_device *dev,
struct dentry *dentry, filldir_t filldir);
static int
osd_ios_OBJECTS_scan(struct osd_thread_info *info, struct osd_device *dev,
struct dentry *dentry, filldir_t filldir);
struct osd_lf_map {
char *olm_name;
struct lu_fid olm_fid;
__u16 olm_flags;
__u16 olm_namelen;
scandir_t olm_scandir;
filldir_t olm_filldir;
};
/* Add the new introduced local files in the list in the future. */
static const struct osd_lf_map osd_lf_maps[] = {
/* CATALOGS */
{
.olm_name = CATLIST,
.olm_fid = {
.f_seq = FID_SEQ_LOCAL_FILE,
.f_oid = LLOG_CATALOGS_OID,
},
.olm_flags = OLF_SHOW_NAME,
.olm_namelen = sizeof(CATLIST) - 1,
},
/* CONFIGS */
{
.olm_name = MOUNT_CONFIGS_DIR,
.olm_fid = {
.f_seq = FID_SEQ_LOCAL_FILE,
.f_oid = MGS_CONFIGS_OID,
},
.olm_flags = OLF_SCAN_SUBITEMS,
.olm_namelen = sizeof(MOUNT_CONFIGS_DIR) - 1,
.olm_scandir = osd_ios_general_scan,
.olm_filldir = osd_ios_varfid_fill,
},
/* NIDTBL_VERSIONS */
{
.olm_name = MGS_NIDTBL_DIR,
.olm_flags = OLF_SCAN_SUBITEMS,
.olm_namelen = sizeof(MGS_NIDTBL_DIR) - 1,
.olm_scandir = osd_ios_general_scan,
.olm_filldir = osd_ios_varfid_fill,
},
/* PENDING */
{
.olm_name = MDT_ORPHAN_DIR,
.olm_namelen = sizeof(MDT_ORPHAN_DIR) - 1,
},
/* ROOT */
{
.olm_name = "ROOT",
.olm_fid = {
.f_seq = FID_SEQ_ROOT,
.f_oid = FID_OID_ROOT,
},
.olm_flags = OLF_SCAN_SUBITEMS | OLF_HIDE_FID,
.olm_namelen = sizeof("ROOT") - 1,
.olm_scandir = osd_ios_ROOT_scan,
},
/* changelog_catalog */
{
.olm_name = CHANGELOG_CATALOG,
.olm_namelen = sizeof(CHANGELOG_CATALOG) - 1,
},
/* changelog_users */
{
.olm_name = CHANGELOG_USERS,
.olm_namelen = sizeof(CHANGELOG_USERS) - 1,
},
/* fld */
{
.olm_name = "fld",
.olm_fid = {
.f_seq = FID_SEQ_LOCAL_FILE,
.f_oid = FLD_INDEX_OID,
},
.olm_flags = OLF_SHOW_NAME,
.olm_namelen = sizeof("fld") - 1,
},
/* last_rcvd */
{
.olm_name = LAST_RCVD,
.olm_fid = {
.f_seq = FID_SEQ_LOCAL_FILE,
.f_oid = LAST_RECV_OID,
},
.olm_flags = OLF_SHOW_NAME,
.olm_namelen = sizeof(LAST_RCVD) - 1,
},
/* reply_data */
{
.olm_name = REPLY_DATA,
.olm_fid = {
.f_seq = FID_SEQ_LOCAL_FILE,
.f_oid = REPLY_DATA_OID,
},
.olm_flags = OLF_SHOW_NAME,
.olm_namelen = sizeof(REPLY_DATA) - 1,
},
/* lov_objid */
{
.olm_name = LOV_OBJID,
.olm_fid = {
.f_seq = FID_SEQ_LOCAL_FILE,
.f_oid = MDD_LOV_OBJ_OID,
},
.olm_flags = OLF_SHOW_NAME,
.olm_namelen = sizeof(LOV_OBJID) - 1,
},
/* lov_objseq */
{
.olm_name = LOV_OBJSEQ,
.olm_fid = {
.f_seq = FID_SEQ_LOCAL_FILE,
.f_oid = MDD_LOV_OBJ_OSEQ,
},
.olm_flags = OLF_SHOW_NAME,
.olm_namelen = sizeof(LOV_OBJSEQ) - 1,
},
/* quota_master */
{
.olm_name = QMT_DIR,
.olm_flags = OLF_SCAN_SUBITEMS,
.olm_namelen = sizeof(QMT_DIR) - 1,
.olm_scandir = osd_ios_general_scan,
.olm_filldir = osd_ios_varfid_fill,
},
/* quota_slave */
{
.olm_name = QSD_DIR,
.olm_flags = OLF_SCAN_SUBITEMS,
.olm_namelen = sizeof(QSD_DIR) - 1,
.olm_scandir = osd_ios_general_scan,
.olm_filldir = osd_ios_varfid_fill,
},
/* seq_ctl */
{
.olm_name = "seq_ctl",
.olm_fid = {
.f_seq = FID_SEQ_LOCAL_FILE,
.f_oid = FID_SEQ_CTL_OID,
},
.olm_flags = OLF_SHOW_NAME,
.olm_namelen = sizeof("seq_ctl") - 1,
},
/* seq_srv */
{
.olm_name = "seq_srv",
.olm_fid = {
.f_seq = FID_SEQ_LOCAL_FILE,
.f_oid = FID_SEQ_SRV_OID,
},
.olm_flags = OLF_SHOW_NAME,
.olm_namelen = sizeof("seq_srv") - 1,
},
/* health_check */
{
.olm_name = HEALTH_CHECK,
.olm_fid = {
.f_seq = FID_SEQ_LOCAL_FILE,
.f_oid = OFD_HEALTH_CHECK_OID,
},
.olm_flags = OLF_SHOW_NAME,
.olm_namelen = sizeof(HEALTH_CHECK) - 1,
},
/* LFSCK */
{
.olm_name = LFSCK_DIR,
.olm_flags = OLF_SCAN_SUBITEMS,
.olm_namelen = sizeof(LFSCK_DIR) - 1,
.olm_scandir = osd_ios_general_scan,
.olm_filldir = osd_ios_varfid_fill,
},
/* lfsck_bookmark */
{
.olm_name = LFSCK_BOOKMARK,
.olm_namelen = sizeof(LFSCK_BOOKMARK) - 1,
},
/* lfsck_layout */
{
.olm_name = LFSCK_LAYOUT,
.olm_namelen = sizeof(LFSCK_LAYOUT) - 1,
},
/* lfsck_namespace */
{
.olm_name = LFSCK_NAMESPACE,
.olm_namelen = sizeof(LFSCK_NAMESPACE) - 1,
},
/* OBJECTS, upgrade from old device */
{
.olm_name = OBJECTS,
.olm_flags = OLF_SCAN_SUBITEMS,
.olm_namelen = sizeof(OBJECTS) - 1,
.olm_scandir = osd_ios_OBJECTS_scan,
},
/* lquota_v2.user, upgrade from old device */
{
.olm_name = "lquota_v2.user",
.olm_namelen = sizeof("lquota_v2.user") - 1,
},
/* lquota_v2.group, upgrade from old device */
{
.olm_name = "lquota_v2.group",
.olm_namelen = sizeof("lquota_v2.group") - 1,
},
/* LAST_GROUP, upgrade from old device */
{
.olm_name = "LAST_GROUP",
.olm_fid = {
.f_seq = FID_SEQ_LOCAL_FILE,
.f_oid = OFD_LAST_GROUP_OID,
},
.olm_flags = OLF_SHOW_NAME,
.olm_namelen = sizeof("LAST_GROUP") - 1,
},
/* committed batchid for cross-MDT operation */
{
.olm_name = "BATCHID",
.olm_fid = {
.f_seq = FID_SEQ_LOCAL_FILE,
.f_oid = BATCHID_COMMITTED_OID,
},
.olm_flags = OLF_SHOW_NAME,
.olm_namelen = sizeof("BATCHID") - 1,
},
/* OSP update logs update_log{_dir} use f_seq = FID_SEQ_UPDATE_LOG{_DIR}
* and f_oid = index for their log files. See lu_update_log{_dir}_fid()
* for more details. */
/* update_log */
{
.olm_name = "update_log",
.olm_fid = {
.f_seq = FID_SEQ_UPDATE_LOG,
},
.olm_flags = OLF_SHOW_NAME | OLF_IDX_IN_FID,
.olm_namelen = sizeof("update_log") - 1,
},
/* update_log_dir */
{
.olm_name = "update_log_dir",
.olm_fid = {
.f_seq = FID_SEQ_UPDATE_LOG_DIR,
},
.olm_flags = OLF_SHOW_NAME | OLF_SCAN_SUBITEMS |
OLF_IDX_IN_FID,
.olm_namelen = sizeof("update_log_dir") - 1,
.olm_scandir = osd_ios_general_scan,
.olm_filldir = osd_ios_uld_fill,
},
/* lost+found */
{
.olm_name = "lost+found",
.olm_fid = {
.f_seq = FID_SEQ_LOCAL_FILE,
.f_oid = OSD_LPF_OID,
},
.olm_flags = OLF_SCAN_SUBITEMS,
.olm_namelen = sizeof("lost+found") - 1,
.olm_scandir = osd_ios_general_scan,
.olm_filldir = osd_ios_lf_fill,
},
/* hsm_actions */
{
.olm_name = HSM_ACTIONS,
},
/* nodemap */
{
.olm_name = LUSTRE_NODEMAP_NAME,
},
/* index_backup */
{
.olm_name = INDEX_BACKUP_DIR,
.olm_fid = {
.f_seq = FID_SEQ_LOCAL_FILE,
.f_oid = INDEX_BACKUP_OID,
},
.olm_flags = OLF_SCAN_SUBITEMS | OLF_NOT_BACKUP,
.olm_namelen = sizeof(INDEX_BACKUP_DIR) - 1,
.olm_scandir = osd_ios_general_scan,
.olm_filldir = osd_ios_varfid_fill,
},
{
.olm_name = NULL
}
};
/* Add the new introduced files under .lustre/ in the list in the future. */
static const struct osd_lf_map osd_dl_maps[] = {
/* .lustre/fid */
{
.olm_name = "fid",
.olm_fid = {
.f_seq = FID_SEQ_DOT_LUSTRE,
.f_oid = FID_OID_DOT_LUSTRE_OBF,
},
.olm_namelen = sizeof("fid") - 1,
},
/* .lustre/lost+found */
{
.olm_name = "lost+found",
.olm_fid = {
.f_seq = FID_SEQ_DOT_LUSTRE,
.f_oid = FID_OID_DOT_LUSTRE_LPF,
},
.olm_namelen = sizeof("lost+found") - 1,
},
{
.olm_name = NULL
}
};
struct osd_ios_item {
struct list_head oii_list;
struct dentry *oii_dentry;
scandir_t oii_scandir;
filldir_t oii_filldir;
};
struct osd_ios_filldir_buf {
/* please keep it as first member */
struct dir_context ctx;
struct osd_thread_info *oifb_info;
struct osd_device *oifb_dev;
struct dentry *oifb_dentry;
int oifb_items;
};
static int
osd_ios_new_item(struct osd_device *dev, struct dentry *dentry,
scandir_t scandir, filldir_t filldir)
{
struct osd_ios_item *item;
ENTRY;
OBD_ALLOC_PTR(item);
if (item == NULL)
RETURN(-ENOMEM);
INIT_LIST_HEAD(&item->oii_list);
item->oii_dentry = dget(dentry);
item->oii_scandir = scandir;
item->oii_filldir = filldir;
list_add_tail(&item->oii_list, &dev->od_ios_list);
RETURN(0);
}
static bool osd_index_need_recreate(const struct lu_env *env,
struct osd_device *dev, struct inode *inode)
{
struct osd_directory *iam = &osd_oti_get(env)->oti_iam;
struct iam_container *bag = &iam->od_container;
int rc;
ENTRY;
rc = iam_container_init(bag, &iam->od_descr, inode);
if (rc)
RETURN(true);
rc = iam_container_setup(bag);
iam_container_fini(bag);
if (rc)
RETURN(true);
RETURN(false);
}
static void osd_ios_index_register(const struct lu_env *env,
struct osd_device *osd,
const struct lu_fid *fid,
struct inode *inode)
{
struct osd_directory *iam = &osd_oti_get(env)->oti_iam;
struct iam_container *bag = &iam->od_container;
struct super_block *sb = osd_sb(osd);
struct iam_descr *descr;
__u32 keysize = 0;
__u32 recsize = 0;
int rc;
ENTRY;
/* Index must be a regular file. */
if (!S_ISREG(inode->i_mode))
RETURN_EXIT;
/* Index's size must be block aligned. */
if (inode->i_size < sb->s_blocksize ||
(inode->i_size & (sb->s_blocksize - 1)) != 0)
RETURN_EXIT;
iam_container_init(bag, &iam->od_descr, inode);
rc = iam_container_setup(bag);
if (rc)
GOTO(fini, rc = 1);
descr = bag->ic_descr;
/* May be regular file with IAM_LFIX_ROOT_MAGIC matched
* coincidentally, or corrupted index object, skip it. */
if (descr->id_ptr_size != 4)
GOTO(fini, rc = 1);
keysize = descr->id_key_size;
recsize = descr->id_rec_size;
rc = osd_index_register(osd, fid, keysize, recsize);
GOTO(fini, rc);
fini:
iam_container_fini(bag);
if (!rc)
CDEBUG(D_LFSCK, "%s: index object "DFID" (%u/%u) registered\n",
osd_name(osd), PFID(fid), keysize, recsize);
}
static void osd_index_restore(const struct lu_env *env, struct osd_device *dev,
struct lustre_index_restore_unit *liru,
void *buf, int bufsize)
{
struct osd_thread_info *info = osd_oti_get(env);
struct osd_inode_id *id = &info->oti_id;
struct lu_fid *tgt_fid = &liru->liru_cfid;
struct inode *bak_inode = NULL;
struct ldiskfs_dir_entry_2 *de = NULL;
struct buffer_head *bh = NULL;
struct dentry *dentry;
char *name = buf;
struct lu_fid bak_fid;
int rc;
ENTRY;
lustre_fid2lbx(name, tgt_fid, bufsize);
dentry = osd_child_dentry_by_inode(env, dev->od_index_backup_inode,
name, strlen(name));
bh = osd_ldiskfs_find_entry(dev->od_index_backup_inode,
&dentry->d_name, &de, NULL, NULL);
if (IS_ERR(bh))
GOTO(log, rc = PTR_ERR(bh));
osd_id_gen(id, le32_to_cpu(de->inode), OSD_OII_NOGEN);
brelse(bh);
bak_inode = osd_iget_fid(info, dev, id, &bak_fid, 0);
if (IS_ERR(bak_inode))
GOTO(log, rc = PTR_ERR(bak_inode));
iput(bak_inode);
/* The OI mapping for index may be invalid, since it will be
* re-created, not update the OI mapping, just cache it in RAM. */
osd_id_gen(id, liru->liru_clid, OSD_OII_NOGEN);
osd_add_oi_cache(info, dev, id, tgt_fid);
rc = lustre_index_restore(env, &dev->od_dt_dev, &liru->liru_pfid,
tgt_fid, &bak_fid, liru->liru_name,
&dev->od_index_backup_list, &dev->od_lock,
buf, bufsize);
GOTO(log, rc);
log:
CDEBUG(D_WARNING, "%s: restore index '%s' with "DFID": rc = %d\n",
osd_name(dev), liru->liru_name, PFID(tgt_fid), rc);
}
/**
* osd_ios_scan_one() - check/fix LMA FID and OI entry for one inode
* @info: is the osd thread info passed by the caller
* @dev: OSD device
* @parent: Parent directory inode
* @inode: Inode for File/dir which is getting scanned
* @fid: FID for @inode
* @name: Name of File/dir
* @namelen: Length of @name
* @flags: Flags for scan
*
* The passed @inode's @fid is verified against the LMA FID. If the @fid
* is NULL or is empty the IGIF FID is used. The FID is verified in the OI to
* reference the inode, or fixed if it is missing or references another inode.
*
* * Return:
* * %0 on success
* * %negative on failure
*/
static int
osd_ios_scan_one(struct osd_thread_info *info, struct osd_device *dev,
struct inode *parent, struct inode *inode,
const struct lu_fid *fid, const char *name,
int namelen, int flags)
{
struct lustre_mdt_attrs *lma = &info->oti_ost_attrs.loa_lma;
struct osd_inode_id *id = &info->oti_id;
struct osd_inode_id *id2 = &info->oti_id2;
struct lustre_scrub *scrub = &dev->od_scrub.os_scrub;
struct scrub_file *sf = &scrub->os_file;
struct lu_fid tfid;
int rc;
ENTRY;
if (!inode) {
CDEBUG(D_INODE, "%s: child '%.*s' lacks inode: rc = -2\n",
osd_name(dev), namelen, name);
RETURN(-ENOENT);
}
rc = osd_get_lma(info, inode, &info->oti_obj_dentry,
&info->oti_ost_attrs);
if (rc != 0 && rc != -ENODATA) {
CDEBUG(D_LFSCK, "%s: fail to get lma for init OI scrub: "
"rc = %d\n", osd_name(dev), rc);
RETURN(rc);
}
osd_id_gen(id, inode->i_ino, inode->i_generation);
if (rc == -ENODATA) {
if (fid == NULL || fid_is_zero(fid) || flags & OLF_HIDE_FID) {
lu_igif_build(&tfid, inode->i_ino, inode->i_generation);
} else {
tfid = *fid;
if (flags & OLF_IDX_IN_FID) {
LASSERT(dev->od_index >= 0);
tfid.f_oid = dev->od_index;
}
}
rc = osd_ea_fid_set(info, inode, &tfid, 0, 0);
if (rc != 0) {
CDEBUG(D_LFSCK, "%s: fail to set LMA for init OI "
"scrub: rc = %d\n", osd_name(dev), rc);
RETURN(rc);
}
} else {
if (lma->lma_compat & LMAC_NOT_IN_OI)
RETURN(0);
tfid = lma->lma_self_fid;
if (lma->lma_compat & LMAC_IDX_BACKUP &&
osd_index_need_recreate(info->oti_env, dev, inode)) {
struct lu_fid *pfid = &info->oti_fid3;
if (is_root_inode(parent)) {
lu_local_obj_fid(pfid, OSD_FS_ROOT_OID);
} else {
rc = osd_scrub_get_fid(info, dev, parent, pfid,
false);
if (rc)
RETURN(rc);
}
rc = lustre_liru_new(&dev->od_index_restore_list, pfid,
&tfid, inode->i_ino, name, namelen);
RETURN(rc);
}
if (!(flags & OLF_NOT_BACKUP))
osd_ios_index_register(info->oti_env, dev, &tfid,
inode);
}
/* Since this called from iterate_dir() the inode lock will be taken */
rc = osd_oi_lookup(info, dev, &tfid, id2, OI_LOCKED);
if (rc != 0) {
if (rc != -ENOENT)
RETURN(rc);
rc = osd_scrub_refresh_mapping(info, dev, &tfid, id,
DTO_INDEX_INSERT, true,
OI_LOCKED, NULL);
if (rc > 0)
rc = 0;
RETURN(rc);
}
if (osd_id_eq_strict(id, id2))
RETURN(0);
if (!(sf->sf_flags & SF_INCONSISTENT)) {
scrub_file_reset(scrub, dev->od_uuid, SF_INCONSISTENT);
rc = scrub_file_store(info->oti_env, scrub);
if (rc != 0)
RETURN(rc);
}
rc = osd_scrub_refresh_mapping(info, dev, &tfid, id,
DTO_INDEX_UPDATE, true,
OI_LOCKED, NULL);
if (rc > 0)
rc = 0;
RETURN(rc);
}
/*
* It scans the /lost+found, and for the OST-object (with filter_fid
* or filter_fid_18_23), move them back to its proper /O/<seq>/d<x>.
*/
static FILLDIR_TYPE do_osd_ios_lf_fill(struct dir_context *buf,
const char *name, int namelen,
loff_t offset, u64 ino,
unsigned int d_type)
{
struct osd_ios_filldir_buf *fill_buf =
(struct osd_ios_filldir_buf *)buf;
struct osd_thread_info *info = fill_buf->oifb_info;
struct osd_device *dev = fill_buf->oifb_dev;
struct lu_fid *fid = &info->oti_fid;
struct osd_scrub *scrub = &dev->od_scrub;
struct dentry *parent = fill_buf->oifb_dentry;
struct dentry *child;
struct inode *dir = parent->d_inode;
struct inode *inode;
int rc;
ENTRY;
fill_buf->oifb_items++;
/* skip any '.' started names */
if (name[0] == '.')
RETURN(0);
scrub->os_lf_scanned++;
child = osd_lookup_noperm(dev, &QSTR_LEN(name, namelen), parent);
if (IS_ERR(child)) {
rc = PTR_ERR(child);
CDEBUG(D_LFSCK, "%s: cannot lookup child '%.*s': rc = %d\n",
osd_name(dev), namelen, name, rc);
RETURN(rc);
} else if (!child->d_inode) {
dput(child);
CDEBUG(D_INODE, "%s: child '%.*s' lacks inode\n",
osd_name(dev), namelen, name);
RETURN(-ENOENT);
}
inode = child->d_inode;
if (S_ISDIR(inode->i_mode)) {
rc = osd_ios_new_item(dev, child, osd_ios_general_scan,
osd_ios_lf_fill);
if (rc != 0)
CDEBUG(D_LFSCK, "%s: cannot add child '%.*s': "
"rc = %d\n", osd_name(dev), namelen, name, rc);
GOTO(put, rc);
}
if (!S_ISREG(inode->i_mode))
GOTO(put, rc = 0);
rc = osd_scrub_get_fid(info, dev, inode, fid, true);
if (rc == SCRUB_NEXT_OSTOBJ || rc == SCRUB_NEXT_OSTOBJ_OLD) {
rc = osd_obj_map_recover(info, dev, dir, child, fid);
if (rc == 0) {
CDEBUG(D_LFSCK, "recovered '%.*s' ["DFID"] from "
"/lost+found.\n", namelen, name, PFID(fid));
scrub->os_lf_repaired++;
} else {
CDEBUG(D_LFSCK, "%s: cannot rename for '%.*s' "
DFID": rc = %d\n",
osd_name(dev), namelen, name, PFID(fid), rc);
}
}
/* XXX: For MDT-objects, we can move them from /lost+found to namespace
* visible place, such as the /ROOT/.lustre/lost+found, then LFSCK
* can process them in furtuer. */
GOTO(put, rc);
put:
if (rc < 0)
scrub->os_lf_failed++;
dput(child);
/* skip the failure to make the scanning to continue. */
return 0;
}
WRAP_FILLDIR_FN(do_, osd_ios_lf_fill)
static FILLDIR_TYPE do_osd_ios_varfid_fill(struct dir_context *buf,
const char *name, int namelen,
loff_t offset, u64 ino,
unsigned int d_type)
{
struct osd_ios_filldir_buf *fill_buf =
(struct osd_ios_filldir_buf *)buf;
struct osd_device *dev = fill_buf->oifb_dev;
struct dentry *child;
int rc;
ENTRY;
fill_buf->oifb_items++;
/* skip any '.' started names */
if (name[0] == '.')
RETURN(0);
child = osd_lookup_noperm(dev, &QSTR_LEN(name, namelen),
fill_buf->oifb_dentry);
if (IS_ERR(child))
RETURN(PTR_ERR(child));
rc = osd_ios_scan_one(fill_buf->oifb_info, dev,
fill_buf->oifb_dentry->d_inode, child->d_inode,
NULL, name, namelen, 0);
if (rc == 0 && S_ISDIR(child->d_inode->i_mode))
rc = osd_ios_new_item(dev, child, osd_ios_general_scan,
osd_ios_varfid_fill);
dput(child);
RETURN(rc);
}
WRAP_FILLDIR_FN(do_, osd_ios_varfid_fill)
static FILLDIR_TYPE do_osd_ios_dl_fill(struct dir_context *buf,
const char *name, int namelen,
loff_t offset, u64 ino,
unsigned int d_type)
{
struct osd_ios_filldir_buf *fill_buf =
(struct osd_ios_filldir_buf *)buf;
struct osd_device *dev = fill_buf->oifb_dev;
const struct osd_lf_map *map;
struct dentry *child;
int rc = 0;
ENTRY;
fill_buf->oifb_items++;
/* skip any '.' started names */
if (name[0] == '.')
RETURN(0);
for (map = osd_dl_maps; map->olm_name != NULL; map++) {
if (map->olm_namelen != namelen)
continue;
if (strncmp(map->olm_name, name, namelen) == 0)
break;
}
if (map->olm_name == NULL)
RETURN(0);
child = osd_lookup_noperm(dev, &QSTR_LEN(name, namelen),
fill_buf->oifb_dentry);
if (IS_ERR(child))
RETURN(PTR_ERR(child));
rc = osd_ios_scan_one(fill_buf->oifb_info, dev,
fill_buf->oifb_dentry->d_inode, child->d_inode,
&map->olm_fid, name, namelen, map->olm_flags);
dput(child);
RETURN(rc);
}
WRAP_FILLDIR_FN(do_, osd_ios_dl_fill)
static FILLDIR_TYPE do_osd_ios_uld_fill(struct dir_context *buf,
const char *name, int namelen,
loff_t offset, u64 ino,
unsigned int d_type)
{
struct osd_ios_filldir_buf *fill_buf =
(struct osd_ios_filldir_buf *)buf;
struct osd_device *dev = fill_buf->oifb_dev;
struct dentry *child;
struct lu_fid tfid;
int rc = 0;
ENTRY;
fill_buf->oifb_items++;
/* skip any non-DFID format name */
if (name[0] != '[')
RETURN(0);
child = osd_lookup_noperm(dev, &QSTR_LEN(name, namelen),
fill_buf->oifb_dentry);
if (IS_ERR(child))
RETURN(PTR_ERR(child));
/* skip the start '[' */
sscanf(&name[1], SFID, RFID(&tfid));
if (fid_is_sane(&tfid))
rc = osd_ios_scan_one(fill_buf->oifb_info, fill_buf->oifb_dev,
fill_buf->oifb_dentry->d_inode,
child->d_inode, &tfid, name, namelen, 0);
else
rc = -EIO;
dput(child);
RETURN(rc);
}
WRAP_FILLDIR_FN(do_, osd_ios_uld_fill)
static FILLDIR_TYPE do_osd_ios_root_fill(struct dir_context *buf,
const char *name, int namelen,
loff_t offset, u64 ino,
unsigned int d_type)
{
struct osd_ios_filldir_buf *fill_buf =
(struct osd_ios_filldir_buf *)buf;
struct osd_device *dev = fill_buf->oifb_dev;
const struct osd_lf_map *map;
struct dentry *child;
int rc = 0;
ENTRY;
fill_buf->oifb_items++;
/* skip any '.' started names */
if (name[0] == '.')
RETURN(0);
for (map = osd_lf_maps; map->olm_name != NULL; map++) {
if (map->olm_namelen != namelen)
continue;
if (strncmp(map->olm_name, name, namelen) == 0)
break;
}
if (map->olm_name == NULL)
RETURN(0);
child = osd_lookup_noperm(dev, &QSTR_LEN(name, namelen),
fill_buf->oifb_dentry);
if (IS_ERR(child))
RETURN(PTR_ERR(child));
else if (!child->d_inode)
GOTO(out_put, rc = -ENOENT);
if (!(map->olm_flags & OLF_NO_OI))
rc = osd_ios_scan_one(fill_buf->oifb_info, dev,
fill_buf->oifb_dentry->d_inode, child->d_inode,
&map->olm_fid, name, namelen, map->olm_flags);
if (rc == 0 && map->olm_flags & OLF_SCAN_SUBITEMS)
rc = osd_ios_new_item(dev, child, map->olm_scandir,
map->olm_filldir);
out_put:
dput(child);
RETURN(rc);
}
WRAP_FILLDIR_FN(do_, osd_ios_root_fill)
static int
osd_ios_general_scan(struct osd_thread_info *info, struct osd_device *dev,
struct dentry *dentry, filldir_t filldir)
{
struct osd_ios_filldir_buf buf = {
.ctx.actor = filldir,
.oifb_info = info,
.oifb_dev = dev,
.oifb_dentry = dentry
};
struct file *filp;
struct path path;
int rc;
ENTRY;
LASSERT(filldir);
path.dentry = dget(dentry);
path.mnt = mntget(dev->od_mnt);
filp = dentry_open(&path, O_RDONLY, current_cred());
path_put(&path);
if (IS_ERR(filp))
RETURN(PTR_ERR(filp));
filp->f_mode |= FMODE_64BITHASH | FMODE_NONOTIFY;
filp->f_flags |= O_NOATIME;
filp->f_pos = 0;
do {
buf.oifb_items = 0;
rc = iterate_dir(filp, &buf.ctx);
} while (rc >= 0 && buf.oifb_items > 0 &&
filp->f_pos != LDISKFS_HTREE_EOF_64BIT);
fput(filp);
RETURN(rc);
}
static int
osd_ios_ROOT_scan(struct osd_thread_info *info, struct osd_device *dev,
struct dentry *dentry, filldir_t filldir)
{
struct lustre_scrub *scrub = &dev->od_scrub.os_scrub;
struct scrub_file *sf = &scrub->os_file;
struct dentry *child;
int rc;
ENTRY;
/* It is existing MDT0 device. We only allow the case of object without
* LMA to happen on the MDT0, which is usually for old 1.8 MDT. Then we
* can generate IGIF mode FID for the object and related OI mapping. If
* it is on other MDTs, then becuase file-level backup/restore, related
* OI mapping may be invalid already, we do not know which is the right
* FID for the object. We only allow IGIF objects to reside on the MDT0.
*
* XXX: For the case of object on non-MDT0 device with neither LMA nor
* "fid" xattr, then something crashed. We cannot re-generate the
* FID directly, instead, the OI scrub will scan the OI structure
* and try to re-generate the LMA from the OI mapping. But if the
* OI mapping crashed or lost also, then we have to give up under
* double failure cases.
*/
spin_lock(&scrub->os_lock);
scrub->os_convert_igif = 1;
spin_unlock(&scrub->os_lock);
child = osd_lookup_noperm_unlocked(dev, &QSTR(dot_lustre_name), dentry);
if (IS_ERR(child)) {
if (PTR_ERR(child) != -ENOENT)
RETURN(PTR_ERR(child));
goto out_scrub;
}
/* For lustre-2.x (x <= 3), the ".lustre" has NO FID-in-LMA,
* so the client will get IGIF for the ".lustre" object when
* the MDT restart.
*
* From the OI scrub view, when the MDT upgrade to Lustre-2.4,
* it does not know whether there are some old clients cached
* the ".lustre" IGIF during the upgrading. Two choices:
*
* 1) Generate IGIF-in-LMA and IGIF-in-OI for the ".lustre".
* It will allow the old connected clients to access the
* ".lustre" with cached IGIF. But it will cause others
* on the MDT failed to check "fid_is_dot_lustre()".
*
* 2) Use fixed FID {FID_SEQ_DOT_LUSTRE, FID_OID_DOT_LUSTRE, 0}
* for ".lustre" in spite of whether there are some clients
* cached the ".lustre" IGIF or not. It enables the check
* "fid_is_dot_lustre()" on the MDT, although it will cause
* that the old connected clients cannot access the ".lustre"
* with the cached IGIF.
*
* Usually, it is rare case for the old connected clients
* to access the ".lustre" with cached IGIF. So we prefer
* to the solution 2).
*/
inode_lock(dentry->d_inode);
rc = osd_ios_scan_one(info, dev, dentry->d_inode,
child->d_inode, &LU_DOT_LUSTRE_FID,
dot_lustre_name,
strlen(dot_lustre_name), 0);
inode_unlock(dentry->d_inode);
if (rc == -ENOENT) {
out_scrub:
/* It is 1.8 MDT device. */
if (!(sf->sf_flags & SF_UPGRADE)) {
scrub_file_reset(scrub, dev->od_uuid,
SF_UPGRADE);
sf->sf_internal_flags &= ~SIF_NO_HANDLE_OLD_FID;
rc = scrub_file_store(info->oti_env, scrub);
} else {
rc = 0;
}
} else if (rc == 0) {
rc = osd_ios_new_item(dev, child, osd_ios_general_scan,
osd_ios_dl_fill);
}
dput(child);
RETURN(rc);
}
static int
osd_ios_OBJECTS_scan(struct osd_thread_info *info, struct osd_device *dev,
struct dentry *dentry, filldir_t filldir)
{
struct lustre_scrub *scrub = &dev->od_scrub.os_scrub;
struct scrub_file *sf = &scrub->os_file;
struct dentry *child;
int rc;
ENTRY;
if (unlikely(sf->sf_internal_flags & SIF_NO_HANDLE_OLD_FID)) {
sf->sf_internal_flags &= ~SIF_NO_HANDLE_OLD_FID;
rc = scrub_file_store(info->oti_env, scrub);
if (rc != 0)
RETURN(rc);
}
child = osd_lookup_noperm_unlocked(dev, &QSTR(ADMIN_USR), dentry);
if (IS_ERR(child)) {
rc = PTR_ERR(child);
} else {
inode_lock(dentry->d_inode);
rc = osd_ios_scan_one(info, dev, dentry->d_inode,
child->d_inode, NULL, ADMIN_USR,
strlen(ADMIN_USR), 0);
inode_unlock(dentry->d_inode);
dput(child);
}
if (rc != 0 && rc != -ENOENT)
GOTO(out, rc);
child = osd_lookup_noperm_unlocked(dev, &QSTR(ADMIN_GRP), dentry);
if (IS_ERR(child))
GOTO(out, rc = PTR_ERR(child));
inode_lock(dentry->d_inode);
rc = osd_ios_scan_one(info, dev, dentry->d_inode,
child->d_inode, NULL, ADMIN_GRP,
strlen(ADMIN_GRP), 0);
inode_unlock(dentry->d_inode);
dput(child);
out:
RETURN(rc == -ENOENT ? 0 : rc);
}
static void osd_initial_OI_scrub(struct osd_thread_info *info,
struct osd_device *dev)
{
struct osd_ios_item *item = NULL;
scandir_t scandir = osd_ios_general_scan;
filldir_t filldir = osd_ios_root_fill;
struct dentry *dentry = osd_sb(dev)->s_root;
const struct osd_lf_map *map = osd_lf_maps;
ENTRY;
/* Lookup IGIF in OI by force for initial OI scrub. */
dev->od_igif_inoi = 1;
while (1) {
/* Don't take inode_lock here since scandir() callbacks
* can call VFS functions which may manully take the
* inode lock itself like iterate_dir(). Since this
* is the case it is best to leave the scandir()
* callbacks to managing the inode lock.
*/
scandir(info, dev, dentry, filldir);
if (item != NULL) {
dput(item->oii_dentry);
OBD_FREE_PTR(item);
}
if (list_empty(&dev->od_ios_list))
break;
item = list_first_entry(&dev->od_ios_list,
struct osd_ios_item, oii_list);
list_del_init(&item->oii_list);
LASSERT(item->oii_scandir != NULL);
scandir = item->oii_scandir;
filldir = item->oii_filldir;
dentry = item->oii_dentry;
}
/* There maybe the case that the object has been removed, but its OI
* mapping is still in the OI file, such as the "CATALOGS" after MDT
* file-level backup/restore. So here cleanup the stale OI mappings. */
while (map->olm_name != NULL) {
struct dentry *child;
if (fid_is_zero(&map->olm_fid)) {
map++;
continue;
}
child = osd_lookup_noperm_unlocked(dev, &QSTR_LEN(map->olm_name,
map->olm_namelen),
osd_sb(dev)->s_root);
if (PTR_ERR(child) == -ENOENT ||
(!IS_ERR(child) && !child->d_inode))
osd_scrub_refresh_mapping(info, dev, &map->olm_fid,
NULL, DTO_INDEX_DELETE,
true, 0, NULL);
if (!IS_ERR(child))
dput(child);
map++;
}
if (!list_empty(&dev->od_index_restore_list)) {
char *buf;
OBD_ALLOC_LARGE(buf, INDEX_BACKUP_BUFSIZE);
if (!buf)
CERROR("%s: not enough RAM for rebuild index\n",
osd_name(dev));
while (!list_empty(&dev->od_index_restore_list)) {
struct lustre_index_restore_unit *liru;
liru = list_first_entry(&dev->od_index_restore_list,
struct lustre_index_restore_unit,
liru_link);
list_del(&liru->liru_link);
if (buf)
osd_index_restore(info->oti_env, dev, liru,
buf, INDEX_BACKUP_BUFSIZE);
OBD_FREE(liru, liru->liru_len);
}
if (buf)
OBD_FREE_LARGE(buf, INDEX_BACKUP_BUFSIZE);
}
EXIT;
}
char *osd_lf_fid2name(const struct lu_fid *fid)
{
const struct osd_lf_map *map = osd_lf_maps;
while (map->olm_name != NULL) {
if (!lu_fid_eq(fid, &map->olm_fid)) {
map++;
continue;
}
if (map->olm_flags & OLF_SHOW_NAME)
return map->olm_name;
else
return "";
}
return NULL;
}
/* OI scrub start/stop */
int osd_scrub_start(const struct lu_env *env, struct osd_device *dev,
__u32 flags)
{
struct lustre_scrub *scrub = &dev->od_scrub.os_scrub;
int rc;
ENTRY;
if (dev->od_dt_dev.dd_rdonly)
RETURN(-EROFS);
/* od_otable_mutex: prevent curcurrent start/stop */
mutex_lock(&dev->od_otable_mutex);
rc = scrub_start(osd_scrub_main, scrub, dev, flags);
if (rc == -EALREADY) {
rc = 0;
if ((scrub->os_file.sf_flags & SF_AUTO ||
scrub->os_partial_scan) &&
!(flags & SS_AUTO_PARTIAL))
osd_scrub_join(env, dev, flags, false);
}
mutex_unlock(&dev->od_otable_mutex);
RETURN(rc);
}
void osd_scrub_stop(struct osd_device *dev)
{
struct lustre_scrub *scrub = &dev->od_scrub.os_scrub;
/* od_otable_mutex: prevent curcurrent start/stop */
mutex_lock(&dev->od_otable_mutex);
spin_lock(&scrub->os_lock);
scrub->os_paused = 1;
spin_unlock(&scrub->os_lock);
scrub_stop(scrub);
mutex_unlock(&dev->od_otable_mutex);
osd_scrub_ois_fini(scrub, &scrub->os_inconsistent_items);
osd_scrub_ois_fini(scrub, &scrub->os_stale_items);
}
/* OI scrub setup/cleanup */
static const char osd_scrub_name[] = "OI_scrub";
int osd_scrub_setup(const struct lu_env *env, struct osd_device *dev,
bool restored)
{
struct osd_thread_info *info = osd_oti_get(env);
struct lustre_scrub *scrub = &dev->od_scrub.os_scrub;
struct lvfs_run_ctxt *ctxt = &dev->od_scrub.os_ctxt;
time64_t interval = scrub->os_auto_scrub_interval;
struct scrub_file *sf = &scrub->os_file;
struct super_block *sb = osd_sb(dev);
struct lvfs_run_ctxt saved;
struct file *filp;
struct inode *inode;
struct lu_fid *fid = &info->oti_fid;
struct osd_inode_id *id = &info->oti_id;
struct dt_object *obj;
bool dirty = false;
int rc = 0;
ENTRY;
memset(&dev->od_scrub, 0, sizeof(struct osd_scrub));
OBD_SET_CTXT_MAGIC(ctxt);
ctxt->pwdmnt = dev->od_mnt;
ctxt->pwd = dev->od_mnt->mnt_root;
init_rwsem(&scrub->os_rwsem);
spin_lock_init(&scrub->os_lock);
INIT_LIST_HEAD(&scrub->os_inconsistent_items);
INIT_LIST_HEAD(&scrub->os_stale_items);
scrub->os_name = osd_name(dev);
scrub->os_auto_scrub_interval = interval;
push_ctxt(&saved, ctxt);
filp = filp_open(osd_scrub_name,
(dev->od_dt_dev.dd_rdonly ? O_RDONLY :
O_RDWR | O_CREAT),
0644);
if (IS_ERR(filp)) {
pop_ctxt(&saved, ctxt);
RETURN(PTR_ERR(filp));
}
inode = file_inode(filp);
ldiskfs_set_inode_flag(inode, LDISKFS_INODE_JOURNAL_DATA);
if (!dev->od_dt_dev.dd_rdonly) {
/* 'What the @fid is' is not imporatant, because the object
* has no OI mapping, and only is visible inside the OSD.*/
lu_igif_build(fid, inode->i_ino, inode->i_generation);
rc = osd_ea_fid_set(info, inode, fid, LMAC_NOT_IN_OI, 0);
if (rc) {
filp_close(filp, NULL);
pop_ctxt(&saved, ctxt);
RETURN(rc);
}
}
osd_id_gen(id, inode->i_ino, inode->i_generation);
osd_add_oi_cache(info, dev, id, fid);
filp_close(filp, NULL);
pop_ctxt(&saved, ctxt);
obj = lu2dt(lu_object_find_slice(env, osd2lu_dev(dev), fid, NULL));
if (IS_ERR_OR_NULL(obj))
RETURN(obj ? PTR_ERR(obj) : -ENOENT);
guid_copy(&dev->od_uuid, (guid_t *)&sb->s_uuid);
scrub->os_obj = obj;
rc = scrub_file_load(env, scrub);
if (rc == -ENOENT || rc == -EFAULT) {
scrub_file_init(scrub, dev->od_uuid);
/* If the "/O" dir does not exist when mount (indicated by
* osd_device::od_maybe_new), neither for the "/OI_scrub",
* then it is quite probably that the device is a new one,
* under such case, mark it as SIF_NO_HANDLE_OLD_FID.
*
* For the rare case that "/O" and "OI_scrub" both lost on
* an old device, it can be found and cleared later.
*
* For the system with "SIF_NO_HANDLE_OLD_FID", we do not
* need to check "filter_fid_18_23" and to convert it to
* "filter_fid" for each object, and all the IGIF should
* have their FID mapping in OI files already. */
if (dev->od_maybe_new && rc == -ENOENT)
sf->sf_internal_flags = SIF_NO_HANDLE_OLD_FID;
dirty = true;
} else if (rc < 0) {
GOTO(cleanup_obj, rc);
} else {
if (!guid_equal(&sf->sf_uuid, &dev->od_uuid)) {
CDEBUG(D_LFSCK,
"%s: UUID has been changed from %pU to %pU\n",
osd_dev2name(dev), &sf->sf_uuid, &dev->od_uuid);
scrub_file_reset(scrub, dev->od_uuid, SF_INCONSISTENT);
dirty = true;
restored = true;
} else if (sf->sf_status == SS_SCANNING) {
sf->sf_status = SS_CRASHED;
dirty = true;
}
if ((sf->sf_oi_count & (sf->sf_oi_count - 1)) != 0) {
LCONSOLE_WARN("%s: invalid oi count %d, set it to %d\n",
osd_dev2name(dev), sf->sf_oi_count,
osd_oi_count);
sf->sf_oi_count = osd_oi_count;
dirty = true;
}
}
if (sf->sf_pos_last_checkpoint != 0)
scrub->os_pos_current = sf->sf_pos_last_checkpoint + 1;
else
scrub->os_pos_current = LDISKFS_FIRST_INO(sb) + 1;
if (dirty) {
rc = scrub_file_store(env, scrub);
if (rc)
GOTO(cleanup_obj, rc);
}
/* Initialize OI files. */
rc = osd_oi_init(info, dev, restored);
if (rc < 0)
GOTO(cleanup_obj, rc);
if (!dev->od_dt_dev.dd_rdonly)
osd_initial_OI_scrub(info, dev);
if (sf->sf_flags & SF_UPGRADE ||
!(sf->sf_internal_flags & SIF_NO_HANDLE_OLD_FID ||
sf->sf_success_count > 0)) {
dev->od_igif_inoi = 0;
dev->od_check_ff = dev->od_is_ost;
} else {
dev->od_igif_inoi = 1;
dev->od_check_ff = 0;
}
if (sf->sf_flags & SF_INCONSISTENT)
/* The 'od_igif_inoi' will be set under the
* following cases:
* 1) new created system, or
* 2) restored from file-level backup, or
* 3) the upgrading completed.
*
* The 'od_igif_inoi' may be cleared by OI scrub
* later if found that the system is upgrading. */
dev->od_igif_inoi = 1;
if (!dev->od_dt_dev.dd_rdonly &&
dev->od_scrub.os_scrub.os_auto_scrub_interval != AS_NEVER &&
((sf->sf_status == SS_PAUSED) ||
(sf->sf_status == SS_CRASHED &&
sf->sf_flags & (SF_RECREATED | SF_INCONSISTENT |
SF_UPGRADE | SF_AUTO)) ||
(sf->sf_status == SS_INIT &&
sf->sf_flags & (SF_RECREATED | SF_INCONSISTENT |
SF_UPGRADE))))
rc = osd_scrub_start(env, dev, SS_AUTO_FULL);
if (rc != 0)
GOTO(cleanup_oi, rc);
/* it is possible that dcache entries may keep objects after they are
* deleted by OSD. While it looks safe this can cause object data to
* stay until umount causing failures in tests calculating free space,
* e.g. replay-ost-single. Since those dcache entries are not used
* anymore let's just free them after use here */
shrink_dcache_sb(sb);
RETURN(0);
cleanup_oi:
osd_oi_fini(info, dev);
cleanup_obj:
dt_object_put_nocache(env, scrub->os_obj);
scrub->os_obj = NULL;
return rc;
}
void osd_scrub_cleanup(const struct lu_env *env, struct osd_device *dev)
{
struct lustre_scrub *scrub = &dev->od_scrub.os_scrub;
LASSERT(dev->od_otable_it == NULL);
if (scrub->os_obj != NULL) {
osd_scrub_stop(dev);
dt_object_put_nocache(env, scrub->os_obj);
scrub->os_obj = NULL;
}
}
/* object table based iteration APIs */
static struct dt_it *osd_otable_it_init(const struct lu_env *env,
struct dt_object *dt, __u32 attr)
{
enum dt_otable_it_flags flags = attr >> DT_OTABLE_IT_FLAGS_SHIFT;
enum dt_otable_it_valid valid = attr & ~DT_OTABLE_IT_FLAGS_MASK;
struct osd_device *dev = osd_dev(dt->do_lu.lo_dev);
struct lustre_scrub *scrub = &dev->od_scrub.os_scrub;
struct osd_otable_it *it;
__u32 start = 0;
int rc;
ENTRY;
/* od_otable_mutex: prevent curcurrent init/fini */
mutex_lock(&dev->od_otable_mutex);
if (dev->od_otable_it != NULL)
GOTO(out, it = ERR_PTR(-EALREADY));
OBD_ALLOC_PTR(it);
if (it == NULL)
GOTO(out, it = ERR_PTR(-ENOMEM));
dev->od_otable_it = it;
it->ooi_dev = dev;
it->ooi_cache.ooc_consumer_idx = -1;
if (flags & DOIF_OUTUSED)
it->ooi_used_outside = 1;
if (flags & DOIF_RESET)
start |= SS_RESET;
if (valid & DOIV_ERROR_HANDLE) {
if (flags & DOIF_FAILOUT)
start |= SS_SET_FAILOUT;
else
start |= SS_CLEAR_FAILOUT;
}
if (valid & DOIV_DRYRUN) {
if (flags & DOIF_DRYRUN)
start |= SS_SET_DRYRUN;
else
start |= SS_CLEAR_DRYRUN;
}
rc = scrub_start(osd_scrub_main, scrub, dev, start & ~SS_AUTO_PARTIAL);
if (rc == -EALREADY) {
it->ooi_cache.ooc_pos_preload = scrub->os_pos_current;
} else if (rc < 0) {
dev->od_otable_it = NULL;
OBD_FREE_PTR(it);
it = ERR_PTR(rc);
} else {
/* We have to start from the begining. */
it->ooi_cache.ooc_pos_preload =
LDISKFS_FIRST_INO(osd_sb(dev)) + 1;
}
GOTO(out, it);
out:
mutex_unlock(&dev->od_otable_mutex);
return (struct dt_it *)it;
}
static void osd_otable_it_fini(const struct lu_env *env, struct dt_it *di)
{
struct osd_otable_it *it = (struct osd_otable_it *)di;
struct osd_device *dev = it->ooi_dev;
/* od_otable_mutex: prevent curcurrent init/fini */
mutex_lock(&dev->od_otable_mutex);
scrub_stop(&dev->od_scrub.os_scrub);
LASSERT(dev->od_otable_it == it);
dev->od_otable_it = NULL;
mutex_unlock(&dev->od_otable_mutex);
OBD_FREE_PTR(it);
}
static int osd_otable_it_get(const struct lu_env *env,
struct dt_it *di, const struct dt_key *key)
{
return 0;
}
static void osd_otable_it_put(const struct lu_env *env, struct dt_it *di)
{
}
static inline int
osd_otable_it_wakeup(struct lustre_scrub *scrub, struct osd_otable_it *it)
{
spin_lock(&scrub->os_lock);
if (it->ooi_cache.ooc_pos_preload < scrub->os_pos_current ||
scrub->os_waiting || !scrub->os_running)
it->ooi_waiting = 0;
else
it->ooi_waiting = 1;
spin_unlock(&scrub->os_lock);
return !it->ooi_waiting;
}
static int osd_otable_it_next(const struct lu_env *env, struct dt_it *di)
{
struct osd_otable_it *it = (struct osd_otable_it *)di;
struct osd_device *dev = it->ooi_dev;
struct lustre_scrub *scrub = &dev->od_scrub.os_scrub;
struct osd_otable_cache *ooc = &it->ooi_cache;
int rc;
ENTRY;
LASSERT(it->ooi_user_ready);
again:
if (!scrub->os_running && !it->ooi_used_outside)
RETURN(1);
if (ooc->ooc_cached_items > 0) {
ooc->ooc_cached_items--;
ooc->ooc_consumer_idx = (ooc->ooc_consumer_idx + 1) &
~OSD_OTABLE_IT_CACHE_MASK;
RETURN(0);
}
if (it->ooi_all_cached) {
wait_var_event(scrub, !scrub->os_running);
RETURN(1);
}
if (scrub->os_waiting && osd_scrub_has_window(scrub, ooc)) {
spin_lock(&scrub->os_lock);
scrub->os_waiting = 0;
wake_up_var(scrub);
spin_unlock(&scrub->os_lock);
}
if (it->ooi_cache.ooc_pos_preload >= scrub->os_pos_current)
wait_var_event(scrub, osd_otable_it_wakeup(scrub, it));
if (!scrub->os_running && !it->ooi_used_outside)
RETURN(1);
rc = osd_otable_it_preload(env, it);
if (rc >= 0)
goto again;
RETURN(rc);
}
static struct dt_key *osd_otable_it_key(const struct lu_env *env,
const struct dt_it *di)
{
return NULL;
}
static int osd_otable_it_key_size(const struct lu_env *env,
const struct dt_it *di)
{
return sizeof(__u64);
}
static int osd_otable_it_rec(const struct lu_env *env, const struct dt_it *di,
struct dt_rec *rec, __u32 attr)
{
struct osd_otable_it *it = (struct osd_otable_it *)di;
struct osd_otable_cache *ooc = &it->ooi_cache;
*(struct lu_fid *)rec = ooc->ooc_cache[ooc->ooc_consumer_idx].oic_fid;
/* Filter out Invald FID already. */
LASSERTF(fid_is_sane((struct lu_fid *)rec),
"Invalid FID "DFID", p_idx = %d, c_idx = %d\n",
PFID((struct lu_fid *)rec),
ooc->ooc_producer_idx, ooc->ooc_consumer_idx);
return 0;
}
static __u64 osd_otable_it_store(const struct lu_env *env,
const struct dt_it *di)
{
struct osd_otable_it *it = (struct osd_otable_it *)di;
struct osd_otable_cache *ooc = &it->ooi_cache;
__u64 hash;
if (it->ooi_user_ready && ooc->ooc_consumer_idx != -1)
hash = ooc->ooc_cache[ooc->ooc_consumer_idx].oic_lid.oii_ino;
else
hash = ooc->ooc_pos_preload;
return hash;
}
/**
* osd_otable_it_load() - Set the OSD layer iteration start position as the
* specified hash.
* @env: Lustre environment
* @di: osd iterator
* @hash: Hash to start
*
* Return:
* * %0 on success
* * %negative on failure
*/
static int osd_otable_it_load(const struct lu_env *env,
const struct dt_it *di, __u64 hash)
{
struct osd_otable_it *it = (struct osd_otable_it *)di;
struct osd_device *dev = it->ooi_dev;
struct osd_otable_cache *ooc = &it->ooi_cache;
struct lustre_scrub *scrub = &dev->od_scrub.os_scrub;
struct osd_iit_param *param = &it->ooi_iit_param;
int rc;
ENTRY;
/* Forbid to set iteration position after iteration started. */
if (it->ooi_user_ready)
RETURN(-EPERM);
LASSERT(!scrub->os_partial_scan);
if (hash > OSD_OTABLE_MAX_HASH)
hash = OSD_OTABLE_MAX_HASH;
/* The hash is the last checkpoint position,
* we will start from the next one. */
ooc->ooc_pos_preload = hash + 1;
if (ooc->ooc_pos_preload <= LDISKFS_FIRST_INO(osd_sb(dev)))
ooc->ooc_pos_preload = LDISKFS_FIRST_INO(osd_sb(dev)) + 1;
it->ooi_user_ready = 1;
if (!scrub->os_full_speed)
wake_up_var(scrub);
memset(param, 0, sizeof(*param));
param->sb = osd_sb(dev);
param->start = ooc->ooc_pos_preload;
param->bg = (ooc->ooc_pos_preload - 1) /
LDISKFS_INODES_PER_GROUP(param->sb);
param->offset = (ooc->ooc_pos_preload - 1) %
LDISKFS_INODES_PER_GROUP(param->sb);
param->gbase = 1 + param->bg * LDISKFS_INODES_PER_GROUP(param->sb);
/* Unplug OSD layer iteration by the first next() call. */
rc = osd_otable_it_next(env, (struct dt_it *)it);
RETURN(rc);
}
const struct dt_index_operations osd_otable_ops = {
.dio_it = {
.init = osd_otable_it_init,
.fini = osd_otable_it_fini,
.get = osd_otable_it_get,
.put = osd_otable_it_put,
.next = osd_otable_it_next,
.key = osd_otable_it_key,
.key_size = osd_otable_it_key_size,
.rec = osd_otable_it_rec,
.store = osd_otable_it_store,
.load = osd_otable_it_load,
}
};
void osd_scrub_dump(struct seq_file *m, struct osd_device *dev)
{
struct osd_scrub *scrub = &dev->od_scrub;
scrub_dump(m, &scrub->os_scrub);
seq_printf(m, "lf_scanned: %llu\n"
"lf_%s: %llu\n"
"lf_failed: %llu\n",
scrub->os_lf_scanned,
scrub->os_scrub.os_file.sf_param & SP_DRYRUN ?
"inconsistent" : "repaired",
scrub->os_lf_repaired,
scrub->os_lf_failed);
}
typedef int (*scan_dir_helper_t)(const struct lu_env *env,
struct osd_device *dev, struct inode *dir,
struct osd_it_ea *oie);
static int osd_scan_dir(const struct lu_env *env, struct osd_device *dev,
struct inode *inode, scan_dir_helper_t cb)
{
struct osd_it_ea *oie;
int rc;
ENTRY;
oie = osd_it_dir_init(env, dev, inode, LUDA_TYPE);
if (IS_ERR(oie))
RETURN(PTR_ERR(oie));
oie->oie_file.f_pos = 0;
rc = osd_ldiskfs_it_fill(env, (struct dt_it *)oie);
if (rc > 0)
rc = -ENODATA;
if (rc)
GOTO(out, rc);
while (oie->oie_it_dirent <= oie->oie_rd_dirent) {
if (!name_is_dot_or_dotdot(oie->oie_dirent->oied_name,
oie->oie_dirent->oied_namelen))
cb(env, dev, inode, oie);
oie->oie_dirent = (void *)oie->oie_dirent +
round_up(sizeof(struct osd_it_ea_dirent) +
oie->oie_dirent->oied_namelen, 8);
oie->oie_it_dirent++;
if (oie->oie_it_dirent <= oie->oie_rd_dirent)
continue;
if (oie->oie_file.f_pos ==
ldiskfs_get_htree_eof(&oie->oie_file))
break;
rc = osd_ldiskfs_it_fill(env, (struct dt_it *)oie);
if (rc) {
if (rc > 0)
rc = 0;
break;
}
}
out:
osd_it_dir_fini(env, oie, inode);
RETURN(rc);
}
static int osd_remove_ml_file(struct osd_thread_info *info,
struct osd_device *dev, struct inode *dir,
struct inode *inode, struct osd_it_ea *oie)
{
handle_t *th;
struct lustre_scrub *scrub = &dev->od_scrub.os_scrub;
struct dentry dentry;
int rc;
ENTRY;
if (scrub->os_file.sf_param & SP_DRYRUN)
RETURN(0);
th = osd_journal_start_sb(osd_sb(dev), LDISKFS_HT_MISC,
osd_dto_credits_noquota[DTO_INDEX_DELETE] +
osd_dto_credits_noquota[DTO_ATTR_SET_BASE]);
if (IS_ERR(th))
RETURN(PTR_ERR(th));
/* Should be created by the VFS layer */
dentry.d_inode = dir;
dentry.d_sb = dir->i_sb;
rc = osd_obj_del_entry(info, dev, &dentry, oie->oie_dirent->oied_name,
oie->oie_dirent->oied_namelen, th);
drop_nlink(inode);
mark_inode_dirty(inode);
ldiskfs_journal_stop(th);
RETURN(rc);
}
static int osd_scan_ml_file(const struct lu_env *env, struct osd_device *dev,
struct inode *dir, struct osd_it_ea *oie)
{
struct osd_thread_info *info = osd_oti_get(env);
struct osd_inode_id id;
struct inode *inode;
struct osd_obj_seq *oseq;
struct ost_id *ostid = &info->oti_ostid;
struct lu_fid *fid = &oie->oie_dirent->oied_fid;
char name[32];
int dirn, rc = 0;
ENTRY;
osd_id_gen(&id, oie->oie_dirent->oied_ino, OSD_OII_NOGEN);
if (!fid_is_sane(fid))
inode = osd_iget_fid(info, dev, &id, fid, 0);
else
inode = osd_iget(info, dev, &id, 0);
if (IS_ERR(inode))
RETURN(PTR_ERR(inode));
fid_to_ostid(fid, ostid);
oseq = osd_seq_load(info, dev, ostid_seq(ostid));
if (IS_ERR(oseq))
RETURN(PTR_ERR(oseq));
dirn = ostid_id(ostid) & (oseq->oos_subdir_count - 1);
LASSERT(oseq->oos_dirs[dirn] != NULL);
osd_oid_name(name, sizeof(name), fid, ostid_id(ostid));
if (((strlen(oseq->oos_root->d_name.name) !=
info->oti_seq_dirent->oied_namelen) ||
strncmp(oseq->oos_root->d_name.name,
info->oti_seq_dirent->oied_name,
info->oti_seq_dirent->oied_namelen) != 0) ||
((strlen(oseq->oos_dirs[dirn]->d_name.name) !=
info->oti_dir_dirent->oied_namelen) ||
strncmp(oseq->oos_dirs[dirn]->d_name.name,
info->oti_dir_dirent->oied_name,
info->oti_dir_dirent->oied_namelen) != 0) ||
((strlen(name) != oie->oie_dirent->oied_namelen) ||
strncmp(oie->oie_dirent->oied_name, name,
oie->oie_dirent->oied_namelen) != 0)) {
CDEBUG(D_LFSCK, "%s: the file O/%.*s/%.*s/%.*s is corrupted\n",
osd_name(dev),
info->oti_seq_dirent->oied_namelen,
info->oti_seq_dirent->oied_name,
info->oti_dir_dirent->oied_namelen,
info->oti_dir_dirent->oied_name,
oie->oie_dirent->oied_namelen,
oie->oie_dirent->oied_name);
rc = osd_remove_ml_file(info, dev, dir, inode, oie);
}
iput(inode);
RETURN(rc);
}
static int osd_scan_ml_file_dir(const struct lu_env *env,
struct osd_device *dev, struct inode *dir,
struct osd_it_ea *oie)
{
struct osd_thread_info *info = osd_oti_get(env);
struct inode *inode;
struct osd_inode_id id;
int rc;
ENTRY;
osd_id_gen(&id, oie->oie_dirent->oied_ino, OSD_OII_NOGEN);
inode = osd_iget(info, dev, &id, 0);
if (IS_ERR(inode))
RETURN(PTR_ERR(inode));
if (!S_ISDIR(inode->i_mode))
GOTO(out, rc = 0);
info->oti_dir_dirent = oie->oie_dirent;
rc = osd_scan_dir(env, dev, inode, osd_scan_ml_file);
info->oti_dir_dirent = NULL;
out:
iput(inode);
RETURN(rc);
}
static int osd_scan_ml_file_seq(const struct lu_env *env,
struct osd_device *dev, struct inode *dir,
struct osd_it_ea *oie)
{
struct osd_thread_info *info = osd_oti_get(env);
struct inode *inode;
struct osd_inode_id id;
int rc;
ENTRY;
osd_id_gen(&id, oie->oie_dirent->oied_ino, OSD_OII_NOGEN);
inode = osd_iget(info, dev, &id, 0);
if (IS_ERR(inode))
RETURN(PTR_ERR(inode));
if (!S_ISDIR(inode->i_mode))
GOTO(out, rc = 0);
info->oti_seq_dirent = oie->oie_dirent;
rc = osd_scan_dir(env, dev, inode, osd_scan_ml_file_dir);
info->oti_seq_dirent = NULL;
out:
iput(inode);
RETURN(rc);
}
static int osd_scan_ml_file_main(const struct lu_env *env,
struct osd_device *dev)
{
return osd_scan_dir(env, dev, dev->od_ost_map->om_root->d_inode,
osd_scan_ml_file_seq);
}
#define LASTID "LAST_ID"
static int osd_update_lastid(struct osd_device *dev, struct inode *inode,
__u64 lastid_known)
{
handle_t *th;
loff_t offset = 0;
__u64 lastid;
int rc;
ENTRY;
th = osd_journal_start_sb(osd_sb(dev), LDISKFS_HT_MISC,
osd_dto_credits_noquota[DTO_WRITE_BLOCK]);
if (IS_ERR(th))
RETURN(PTR_ERR(th));
lastid = cpu_to_le64(lastid_known);
rc = osd_ldiskfs_write(dev, inode, &lastid, sizeof(lastid), 0, &offset,
th);
mark_inode_dirty(inode);
ldiskfs_journal_stop(th);
RETURN(rc);
}
static int osd_create_lastid(const struct lu_env *env, struct osd_device *dev,
struct inode *dir, __u64 lastid_known)
{
handle_t *th;
struct osd_thread_info *info = osd_oti_get(env);
struct dentry *d_lastid;
struct inode *i_lastid;
loff_t offset = 0;
int credits = LDISKFS_DATA_TRANS_BLOCKS(dir->i_sb) +
LDISKFS_INDEX_EXTRA_TRANS_BLOCKS + 3 +
osd_dto_credits_noquota[DTO_WRITE_BLOCK];
int rc;
ENTRY;
sb_start_write(dir->i_sb);
th = osd_journal_start_sb(dir->i_sb, LDISKFS_HT_MISC, credits);
if (IS_ERR(th))
RETURN(PTR_ERR(th));
i_lastid = ldiskfs_create_inode(th, dir, (S_IFREG | 0644), NULL);
if (IS_ERR(i_lastid))
GOTO(out_stop, rc = PTR_ERR(i_lastid));
unlock_new_inode(i_lastid);
d_lastid = osd_child_dentry_by_inode(env, dir, LASTID, strlen(LASTID));
rc = osd_ldiskfs_add_entry(info, dev, th, d_lastid, i_lastid, NULL);
if (rc)
GOTO(out_stop, rc);
rc = osd_ldiskfs_write(dev, i_lastid, &lastid_known,
sizeof(lastid_known), 0, &offset, th);
if (rc)
GOTO(out_stop, rc);
mark_inode_dirty(i_lastid);
ldiskfs_journal_stop(th);
th = NULL;
sb_end_write(dir->i_sb);
GOTO(out, rc = 0);
out_stop:
if (!IS_ERR_OR_NULL(th))
ldiskfs_journal_stop(th);
sb_end_write(dir->i_sb);
out:
if (!IS_ERR_OR_NULL(i_lastid))
iput(i_lastid);
RETURN(rc);
}
static int osd_scan_lastid_dir(const struct lu_env *env, struct osd_device *dev,
struct inode *dir, struct osd_it_ea *oie)
{
struct osd_thread_info *info = osd_oti_get(env);
struct inode *inode;
struct osd_inode_id id;
int rc = 0;
ENTRY;
osd_id_gen(&id, oie->oie_dirent->oied_ino, OSD_OII_NOGEN);
inode = osd_iget(info, dev, &id, 0);
if (IS_ERR(inode))
RETURN(PTR_ERR(inode));
if (S_ISDIR(inode->i_mode))
GOTO(out, rc = 0);
if (strlen(LASTID) != oie->oie_dirent->oied_namelen ||
strncmp(oie->oie_dirent->oied_name, LASTID,
oie->oie_dirent->oied_namelen) != 0) {
CDEBUG(D_LFSCK, "%s: the file O/%.*s/%.*s is unexpected\n",
osd_name(dev),
info->oti_seq_dirent->oied_namelen,
info->oti_seq_dirent->oied_name,
oie->oie_dirent->oied_namelen,
oie->oie_dirent->oied_name);
GOTO(out, rc = 0);
}
info->oti_lastid_inode = inode;
RETURN(0);
out:
iput(inode);
RETURN(rc);
}
static int osd_scan_lastid_seq(const struct lu_env *env, struct osd_device *dev,
struct inode *dir, struct osd_it_ea *oie)
{
struct osd_thread_info *info = osd_oti_get(env);
struct lustre_ost_attrs *lma = &info->oti_ost_attrs;
struct lustre_scrub *scrub = &dev->od_scrub.os_scrub;
struct inode *inode;
struct osd_inode_id id;
__u64 seq;
__u64 lastid;
__u64 lastid_known;
loff_t offset = 0;
int index;
int rc;
ENTRY;
osd_id_gen(&id, oie->oie_dirent->oied_ino, OSD_OII_NOGEN);
inode = osd_iget(info, dev, &id, 0);
if (IS_ERR(inode))
RETURN(PTR_ERR(inode));
if (!S_ISDIR(inode->i_mode))
GOTO(out, rc = 0);
if (oie->oie_dirent->oied_namelen + 1 > sizeof(info->oti_name))
GOTO(out, rc = -ENAMETOOLONG);
memcpy(info->oti_name, oie->oie_dirent->oied_name,
oie->oie_dirent->oied_namelen);
info->oti_name[oie->oie_dirent->oied_namelen] = '\0';
rc = kstrtoull(info->oti_name, 16, &seq);
if (rc)
GOTO(out, rc);
if (seq < 0x1F) {
rc = kstrtoull(info->oti_name, 10, &seq);
if (rc)
GOTO(out, rc);
}
if (!fid_seq_is_local_storage(seq))
GOTO(out, rc = 0);
info->oti_lastid_inode = NULL;
info->oti_seq_dirent = oie->oie_dirent;
rc = osd_scan_dir(env, dev, inode, osd_scan_lastid_dir);
info->oti_seq_dirent = NULL;
if (rc)
GOTO(out, rc);
if (scrub->os_file.sf_param & SP_DRYRUN)
GOTO(out, rc = 0);
for (index = 0; index < scrub->os_ls_count; index++)
if (scrub->os_ls_fids[index].f_seq == seq)
break;
if (unlikely(index >= scrub->os_ls_count)) {
CDEBUG(D_LFSCK,
"%s: can't find seq %llu, it's modified during scrub?\n",
osd_name(dev), seq);
GOTO(out, rc);
}
lastid_known = scrub->os_ls_fids[index].f_oid;
if (!info->oti_lastid_inode) {
rc = osd_create_lastid(env, dev, dir, lastid_known);
GOTO(out, rc);
}
rc = osd_get_lma(info, info->oti_lastid_inode, &info->oti_obj_dentry,
lma);
if (rc && rc != -ENODATA) {
CDEBUG(D_LFSCK, "%s: failed to get the xattr %s for O/%s/%s\n",
osd_name(dev), XATTR_NAME_LMA, info->oti_name, LASTID);
GOTO(out, rc);
}
if (rc != 0 || lma->loa_lma.lma_self_fid.f_seq != seq ||
lma->loa_lma.lma_self_fid.f_oid != 0 ||
lma->loa_lma.lma_self_fid.f_ver != 0) {
lma->loa_lma.lma_self_fid.f_seq = seq;
lma->loa_lma.lma_self_fid.f_oid = 0;
lma->loa_lma.lma_self_fid.f_ver = 0;
rc = __osd_xattr_set(info, info->oti_lastid_inode,
XATTR_NAME_LMA, lma, sizeof(*lma),
rc == -ENODATA ?
XATTR_CREATE : XATTR_REPLACE);
if (rc)
GOTO(out, rc);
}
spin_lock(&info->oti_lastid_inode->i_lock);
if (i_size_read(info->oti_lastid_inode) < sizeof(lastid)) {
spin_unlock(&info->oti_lastid_inode->i_lock);
lastid = 0;
} else {
spin_unlock(&info->oti_lastid_inode->i_lock);
rc = osd_ldiskfs_read(info->oti_lastid_inode, &lastid,
sizeof(lastid), &offset);
if (rc < 0)
GOTO(out, rc);
if (rc < sizeof(lastid))
lastid = 0;
else
lastid = le64_to_cpu(lastid);
}
if (lastid < lastid_known)
rc = osd_update_lastid(dev, info->oti_lastid_inode,
lastid_known);
out:
if (info->oti_lastid_inode) {
iput(info->oti_lastid_inode);
info->oti_lastid_inode = NULL;
}
iput(inode);
RETURN(rc);
}
static int osd_scan_last_id_main(const struct lu_env *env,
struct osd_device *dev)
{
return osd_scan_dir(env, dev, dev->od_ost_map->om_root->d_inode,
osd_scan_lastid_seq);
}
static int osd_scan_O_seq(const struct lu_env *env, struct osd_device *dev,
struct inode *dir, struct osd_it_ea *oie)
{
struct osd_thread_info *info = osd_oti_get(env);
struct lustre_scrub *scrub = &dev->od_scrub.os_scrub;
struct inode *inode;
struct osd_inode_id id;
struct lu_fid *fids;
__u64 seq;
int rc;
ENTRY;
osd_id_gen(&id, oie->oie_dirent->oied_ino, OSD_OII_NOGEN);
inode = osd_iget(info, dev, &id, 0);
if (IS_ERR(inode))
RETURN(PTR_ERR(inode));
if (!S_ISDIR(inode->i_mode))
GOTO(out, rc = 0);
if (oie->oie_dirent->oied_namelen + 1 > sizeof(info->oti_name))
GOTO(out, rc = -ENAMETOOLONG);
memcpy(info->oti_name, oie->oie_dirent->oied_name,
oie->oie_dirent->oied_namelen);
info->oti_name[oie->oie_dirent->oied_namelen] = '\0';
rc = kstrtoull(info->oti_name, 16, &seq);
if (rc)
GOTO(out, rc);
if (seq < 0x1F) {
rc = kstrtoull(info->oti_name, 10, &seq);
if (rc)
GOTO(out, rc);
}
if (!fid_seq_is_local_storage(seq))
GOTO(out, rc = 0);
scrub->os_ls_count++;
if (unlikely(scrub->os_ls_count > scrub->os_ls_size)) {
OBD_ALLOC(fids,
sizeof(struct lu_fid) * (scrub->os_ls_size + 4));
if (fids == NULL)
GOTO(out, -ENOMEM);
memcpy(fids, scrub->os_ls_fids,
sizeof(struct lu_fid) * scrub->os_ls_size);
OBD_FREE(scrub->os_ls_fids,
sizeof(struct lu_fid) * scrub->os_ls_size);
scrub->os_ls_size += 4;
scrub->os_ls_fids = fids;
}
scrub->os_ls_fids[scrub->os_ls_count - 1].f_seq = seq;
out:
iput(inode);
RETURN(rc);
}
static int osd_scan_O_main(const struct lu_env *env, struct osd_device *dev)
{
return osd_scan_dir(env, dev, dev->od_ost_map->om_root->d_inode,
osd_scan_O_seq);
}
static int osd_seq_dir_helper(const struct lu_env *env,
struct osd_device *osd, struct inode *dir,
struct osd_it_ea *oie)
{
struct osd_thread_info *info = osd_oti_get(env);
struct lu_fid *fid = &info->oti_fid;
struct inode *inode;
struct osd_inode_id id;
__u64 seq;
int rc = 0;
ENTRY;
osd_id_gen(&id, oie->oie_dirent->oied_ino, OSD_OII_NOGEN);
inode = osd_iget(info, osd, &id, 0);
if (IS_ERR(inode))
RETURN(PTR_ERR(inode));
if (!S_ISDIR(inode->i_mode))
GOTO(out, rc);
if (oie->oie_dirent->oied_namelen + 1 > sizeof(info->oti_name))
GOTO(out, rc = -ENAMETOOLONG);
memcpy(info->oti_name, oie->oie_dirent->oied_name,
oie->oie_dirent->oied_namelen);
info->oti_name[oie->oie_dirent->oied_namelen] = '\0';
rc = kstrtoull(info->oti_name, 16, &seq);
if (!rc && seq >= FID_SEQ_NORMAL && seq > fid_seq(fid))
fid->f_seq = seq;
out:
iput(inode);
RETURN(rc);
}
int osd_last_seq_get(const struct lu_env *env, struct dt_device *dt,
__u64 *seq)
{
struct osd_thread_info *info = osd_oti_get(env);
struct osd_device *osd = osd_dt_dev(dt);
struct lu_fid *fid = &info->oti_fid;
int rc;
ENTRY;
if (!osd->od_is_ost)
RETURN(-EINVAL);
fid_zero(fid);
rc = osd_scan_dir(env, osd, osd->od_ost_map->om_root->d_inode,
osd_seq_dir_helper);
if (!rc)
*seq = fid_seq(fid);
RETURN(rc);
}
