Viewing: ofd_io.c
// SPDX-License-Identifier: GPL-2.0
/*
* Copyright (c) 2009, 2010, Oracle and/or its affiliates. All rights reserved.
* Use is subject to license terms.
*
* Copyright (c) 2012, 2017, Intel Corporation.
*/
/*
* This file is part of Lustre, http://www.lustre.org/
*
* This file provides functions to handle IO requests from clients and
* also LFSCK routines to check parent file identifier (PFID) consistency.
*
* Author: Alexey Zhuravlev <alexey.zhuravlev@intel.com>
* Author: Fan Yong <fan.yong@intel.com>
*/
#define DEBUG_SUBSYSTEM S_FILTER
#include <linux/kthread.h>
#include "ofd_internal.h"
#include <lustre_nodemap.h>
struct ofd_inconsistency_item {
struct list_head oii_list;
struct ofd_object *oii_obj;
struct filter_fid oii_ff;
};
/**
* Verify single object for parent FID consistency.
*
* Part of LFSCK processing which checks single object PFID stored in extended
* attribute (XATTR) against real FID of MDT parent object received by LFSCK.
* This verifies that the OST object is being referenced by only a single MDT
* object.
*
* \param[in] env execution environment
* \param[in] ofd OFD device
* \param[in] oii object-related local data
* \param[in] lrl LFSCK request data
*/
static void ofd_inconsistency_verify_one(const struct lu_env *env,
struct ofd_device *ofd,
struct ofd_inconsistency_item *oii,
struct lfsck_req_local *lrl)
{
struct ofd_object *fo = oii->oii_obj;
struct filter_fid *client_ff = &oii->oii_ff;
struct filter_fid *local_ff = &fo->ofo_ff;
int rc;
LASSERT(fo->ofo_pfid_checking);
LASSERT(!fo->ofo_pfid_verified);
lrl->lrl_fid = fo->ofo_header.loh_fid; /* OST-object itself FID. */
lrl->lrl_ff_client = *client_ff; /* client given PFID. */
lrl->lrl_ff_local = *local_ff; /* OST local stored PFID. */
rc = lfsck_in_notify_local(env, ofd->ofd_osd, lrl, NULL);
ofd_write_lock(env, fo);
switch (lrl->lrl_status) {
case LPVS_INIT:
LASSERT(rc <= 0);
if (rc < 0)
CDEBUG(D_LFSCK, "%s: fail to verify OST local stored PFID xattr for "
DFID", the client given PFID "
DFID", OST local stored PFID "DFID": rc = %d\n",
ofd_name(ofd), PFID(&fo->ofo_header.loh_fid),
PFID(&client_ff->ff_parent),
PFID(&local_ff->ff_parent), rc);
else
fo->ofo_pfid_verified = 1;
break;
case LPVS_INCONSISTENT:
LASSERT(rc != 0);
ofd->ofd_inconsistency_self_detected++;
if (rc < 0)
CDEBUG(D_LFSCK, "%s: fail to verify the client given PFID for "
DFID", the client given PFID "DFID
", local stored PFID "DFID": rc = %d\n",
ofd_name(ofd), PFID(&fo->ofo_header.loh_fid),
PFID(&client_ff->ff_parent),
PFID(&local_ff->ff_parent), rc);
else
CDEBUG(D_LFSCK, "%s: both the client given PFID and the OST local stored PFID are stale for the "
"OST-object "DFID", client given PFID is "DFID
", local stored PFID is "DFID"\n",
ofd_name(ofd), PFID(&fo->ofo_header.loh_fid),
PFID(&client_ff->ff_parent),
PFID(&local_ff->ff_parent));
break;
case LPVS_INCONSISTENT_TOFIX:
ofd->ofd_inconsistency_self_detected++;
if (rc == 0) {
ofd->ofd_inconsistency_self_repaired++;
CDEBUG(D_LFSCK, "%s: fixed the staled OST PFID xattr for "
DFID", with the client given PFID "DFID
", the old stored PFID "DFID"\n",
ofd_name(ofd), PFID(&fo->ofo_header.loh_fid),
PFID(&client_ff->ff_parent),
PFID(&local_ff->ff_parent));
} else if (rc < 0) {
CDEBUG(D_LFSCK, "%s: fail to fix the OST PFID xattr for "
DFID", client given PFID "DFID", local "
"stored PFID "DFID": rc = %d\n",
ofd_name(ofd), PFID(&fo->ofo_header.loh_fid),
PFID(&client_ff->ff_parent),
PFID(&local_ff->ff_parent), rc);
}
local_ff->ff_parent = client_ff->ff_parent;
fo->ofo_pfid_verified = 1;
break;
default:
break;
}
fo->ofo_pfid_checking = 0;
ofd_write_unlock(env, fo);
ofd_object_put(env, fo);
OBD_FREE_PTR(oii);
}
struct oivm_args {
struct ofd_device *od_ofd;
struct lu_env od_env;
struct lfsck_req_local od_lrl;
struct completion *od_started;
};
#ifndef TASK_IDLE
#define TASK_IDLE TASK_INTERRUPTIBLE
#endif
/**
* Verification thread to check parent FID consistency.
*
* Kernel thread to check consistency of parent FID for any
* new item added for checking by ofd_add_inconsistency_item().
*
* \param[in] args OFD device
*
* \retval 0 on successful thread termination
* \retval negative value if thread can't start
*/
static int ofd_inconsistency_verification_main(void *_args)
{
struct oivm_args *args = _args;
struct lu_env *env = &args->od_env;
struct ofd_device *ofd = args->od_ofd;
struct ofd_inconsistency_item *oii;
struct lfsck_req_local *lrl = &args->od_lrl;
ENTRY;
lrl->lrl_event = LEL_PAIRS_VERIFY_LOCAL;
lrl->lrl_active = LFSCK_TYPE_LAYOUT;
complete(args->od_started);
spin_lock(&ofd->ofd_inconsistency_lock);
while (({set_current_state(TASK_IDLE);
!kthread_should_stop(); })) {
while (!list_empty(&ofd->ofd_inconsistency_list)) {
__set_current_state(TASK_RUNNING);
oii = list_first_entry(&ofd->ofd_inconsistency_list,
struct ofd_inconsistency_item,
oii_list);
list_del_init(&oii->oii_list);
spin_unlock(&ofd->ofd_inconsistency_lock);
ofd_inconsistency_verify_one(env, ofd, oii, lrl);
spin_lock(&ofd->ofd_inconsistency_lock);
}
spin_unlock(&ofd->ofd_inconsistency_lock);
schedule();
spin_lock(&ofd->ofd_inconsistency_lock);
}
__set_current_state(TASK_RUNNING);
while (!list_empty(&ofd->ofd_inconsistency_list)) {
struct ofd_object *fo;
oii = list_first_entry(&ofd->ofd_inconsistency_list,
struct ofd_inconsistency_item,
oii_list);
list_del_init(&oii->oii_list);
fo = oii->oii_obj;
spin_unlock(&ofd->ofd_inconsistency_lock);
ofd_write_lock(env, fo);
fo->ofo_pfid_checking = 0;
ofd_write_unlock(env, fo);
ofd_object_put(env, fo);
OBD_FREE_PTR(oii);
spin_lock(&ofd->ofd_inconsistency_lock);
}
spin_unlock(&ofd->ofd_inconsistency_lock);
lu_env_fini(&args->od_env);
OBD_FREE_PTR(args);
return 0;
}
/**
* Start parent FID verification thread.
*
* See ofd_inconsistency_verification_main().
*
* \param[in] ofd OFD device
*
* \retval 0 on successful start of thread
* \retval negative value on error
*/
int ofd_start_inconsistency_verification_thread(struct ofd_device *ofd)
{
struct task_struct *task;
struct oivm_args *args;
DECLARE_COMPLETION_ONSTACK(started);
int rc;
if (ofd->ofd_inconsistency_task)
return -EALREADY;
OBD_ALLOC_PTR(args);
if (!args)
return -ENOMEM;
rc = lu_env_init(&args->od_env, LCT_DT_THREAD);
if (rc) {
OBD_FREE_PTR(args);
return rc;
}
args->od_ofd = ofd;
args->od_started = &started;
task = kthread_create(ofd_inconsistency_verification_main, args,
"inconsistency_verification");
if (IS_ERR(task)) {
rc = PTR_ERR(task);
CERROR("%s: cannot start self_repair thread: rc = %d\n",
ofd_name(ofd), rc);
} else {
rc = 0;
spin_lock(&ofd->ofd_inconsistency_lock);
if (ofd->ofd_inconsistency_task)
rc = -EALREADY;
else
ofd->ofd_inconsistency_task = task;
spin_unlock(&ofd->ofd_inconsistency_lock);
if (rc)
kthread_stop(task);
else {
wake_up_process(task);
wait_for_completion(&started);
}
}
if (rc) {
lu_env_fini(&args->od_env);
OBD_FREE_PTR(args);
}
return rc;
}
/**
* Stop parent FID verification thread.
*
* \param[in] ofd OFD device
*
* \retval 0 on successful start of thread
* \retval -EALREADY if thread is already stopped
*/
int ofd_stop_inconsistency_verification_thread(struct ofd_device *ofd)
{
struct task_struct *task;
spin_lock(&ofd->ofd_inconsistency_lock);
task = ofd->ofd_inconsistency_task;
ofd->ofd_inconsistency_task = NULL;
spin_unlock(&ofd->ofd_inconsistency_lock);
if (!task)
return -EALREADY;
kthread_stop(task);
return 0;
}
/**
* Add new item for parent FID verification.
*
* Prepare new verification item and pass it to the dedicated
* verification thread for further processing.
*
* \param[in] env execution environment
* \param[in] fo OFD object
* \param[in] oa OBDO structure with PFID
*/
static void ofd_add_inconsistency_item(const struct lu_env *env,
struct ofd_object *fo, struct obdo *oa)
{
struct ofd_device *ofd = ofd_obj2dev(fo);
struct ofd_inconsistency_item *oii;
struct filter_fid *ff;
bool wakeup = false;
OBD_ALLOC_PTR(oii);
if (oii == NULL)
return;
INIT_LIST_HEAD(&oii->oii_list);
lu_object_get(&fo->ofo_obj.do_lu);
oii->oii_obj = fo;
ff = &oii->oii_ff;
ff->ff_parent.f_seq = oa->o_parent_seq;
ff->ff_parent.f_oid = oa->o_parent_oid;
ff->ff_parent.f_stripe_idx = oa->o_stripe_idx;
ff->ff_layout = oa->o_layout;
spin_lock(&ofd->ofd_inconsistency_lock);
if (fo->ofo_pfid_checking || fo->ofo_pfid_verified) {
spin_unlock(&ofd->ofd_inconsistency_lock);
OBD_FREE_PTR(oii);
return;
}
fo->ofo_pfid_checking = 1;
if (list_empty(&ofd->ofd_inconsistency_list))
wakeup = true;
list_add_tail(&oii->oii_list, &ofd->ofd_inconsistency_list);
if (wakeup && ofd->ofd_inconsistency_task)
wake_up_process(ofd->ofd_inconsistency_task);
spin_unlock(&ofd->ofd_inconsistency_lock);
/* XXX: When the found inconsistency exceeds some threshold,
* we can trigger the LFSCK to scan part of the system
* or the whole system, which depends on how to define
* the threshold, a simple way maybe like that: define
* the absolute value of how many inconsisteny allowed
* to be repaired via self detect/repair mechanism, if
* exceeded, then trigger the LFSCK to scan the layout
* inconsistency within the whole system. */
}
/**
* Verify parent FID of an object.
*
* Check the parent FID is sane and start extended
* verification procedure otherwise.
*
* \param[in] env execution environment
* \param[in] fo OFD object
* \param[in] oa OBDO structure with PFID
*
* \retval 0 on successful verification
* \retval -EINPROGRESS if PFID is being repaired
* \retval -EPERM if PFID was verified but still insane
*/
int ofd_verify_ff(const struct lu_env *env, struct ofd_object *fo,
struct obdo *oa)
{
struct lu_fid *pfid = &fo->ofo_ff.ff_parent;
int rc = 0;
ENTRY;
if (fid_is_sane(pfid)) {
if (likely(oa->o_parent_seq == pfid->f_seq &&
oa->o_parent_oid == pfid->f_oid &&
oa->o_stripe_idx == pfid->f_stripe_idx))
RETURN(0);
if (fo->ofo_pfid_verified)
RETURN(-EPERM);
}
/* The OST-object may be inconsistent, and we need further verification.
* To avoid block the RPC service thread, return -EINPROGRESS to client
* and make it retry later. */
if (fo->ofo_pfid_checking)
RETURN(-EINPROGRESS);
rc = ofd_object_ff_load(env, fo, false);
if (rc == -ENODATA)
RETURN(0);
if (rc < 0)
RETURN(rc);
if (likely(oa->o_parent_seq == pfid->f_seq &&
oa->o_parent_oid == pfid->f_oid &&
oa->o_stripe_idx == pfid->f_stripe_idx))
RETURN(0);
/* Push it to the dedicated thread for further verification. */
ofd_add_inconsistency_item(env, fo, oa);
RETURN(-EINPROGRESS);
}
/**
* FLR: verify the layout version of object.
*
* \param[in] env execution environment
* \param[in] fo OFD object
* \param[in] oa OBDO structure with layout version
*
* \retval 0 on successful verification
* \retval -EINPROGRESS layout version is in transfer
* \retval -ESTALE the layout version on client is stale
*/
int ofd_verify_layout_version(const struct lu_env *env,
struct ofd_object *fo, const struct obdo *oa)
{
int rc;
bool force = false;
ENTRY;
if (unlikely(CFS_FAIL_CHECK(OBD_FAIL_OST_SKIP_LV_CHECK)))
GOTO(out, rc = 0);
again:
rc = ofd_object_ff_load(env, fo, force);
if (rc < 0) {
if (rc == -ENODATA)
rc = 0;
GOTO(out, rc);
}
/**
* this update is not legitimate, whose layout version is older than
* that on the disk.
*/
if (ofd_layout_version_less(oa->o_layout_version,
fo->ofo_ff.ff_layout_version)) {
/* the object's filter_fid could be changed via
* out_xattr_set(), and the ofd_object::ofo_ff is out of date.
*/
if (!force) {
force = true;
GOTO(again, rc);
}
GOTO(out, rc = -ESTALE);
}
out:
CDEBUG(D_INODE,
"%s:"DFID" verify layout version: %#x/%#x -> %#x, rc: %d\n",
ofd_name(ofd_obj2dev(fo)),
PFID(lu_object_fid(&fo->ofo_obj.do_lu)),
fo->ofo_ff.ff_layout_version, fo->ofo_ff.ff_range,
oa->o_layout_version, rc);
RETURN(rc);
}
/*
* Handle multiple attrs at once:
*
* Lazy ATIME update to refresh atime every ofd_atime_diff
* seconds so that external scanning tool can see it actual
* within that period and be able to identify accessed files
*
* Update enc flag on OST object
* OSD layer will find out if this is really necessary.
*/
static void ofd_handle_attrs(const struct lu_env *env, struct ofd_device *ofd,
struct ofd_object *fo, struct obdo *oa)
{
bool need_atime = (oa->o_valid & OBD_MD_FLATIME);
bool need_encfl = (oa->o_valid & OBD_MD_FLFLAGS &&
oa->o_flags & LUSTRE_ENCRYPT_FL);
struct lu_attr *la;
struct dt_object *o;
struct thandle *th;
int rc;
if (need_atime && ofd->ofd_atime_diff == 0)
need_atime = false;
if (need_encfl && CFS_FAIL_CHECK(OBD_FAIL_LFSCK_NO_ENCFLAG))
need_encfl = false;
if (!need_atime && !need_encfl)
return;
la = &ofd_info(env)->fti_attr2;
o = ofd_object_child(fo);
if (need_atime) {
if (unlikely(fo->ofo_atime_ondisk == 0)) {
rc = dt_attr_get(env, o, la);
if (unlikely(rc)) {
need_atime = false;
GOTO(trans, rc);
}
LASSERT(la->la_valid & LA_ATIME);
if (la->la_atime == 0)
la->la_atime = la->la_mtime;
fo->ofo_atime_ondisk = la->la_atime;
}
if (oa->o_atime - fo->ofo_atime_ondisk < ofd->ofd_atime_diff) {
need_atime = false;
GOTO(trans, rc = 0);
}
/* atime hasn't been updated too long, update it */
fo->ofo_atime_ondisk = oa->o_atime;
}
trans:
if (!need_atime && !need_encfl)
return;
th = ofd_trans_create(env, ofd);
if (IS_ERR(th)) {
CERROR("%s: cannot create transaction: rc = %d\n",
ofd_name(ofd), (int)PTR_ERR(th));
return;
}
la->la_valid = 0;
if (need_atime) {
la->la_valid |= LA_ATIME;
la->la_atime = fo->ofo_atime_ondisk;
}
if (need_encfl) {
la->la_valid |= LA_FLAGS;
la->la_flags = LUSTRE_ENCRYPT_FL;
}
rc = dt_declare_attr_set(env, o, la, th);
if (rc)
GOTO(out_tx, rc);
rc = dt_trans_start_local(env, ofd->ofd_osd, th);
if (rc) {
CERROR("%s: cannot start transaction: rc = %d\n",
ofd_name(ofd), rc);
GOTO(out_tx, rc);
}
ofd_read_lock(env, fo);
if (ofd_object_exists(fo))
rc = dt_attr_set(env, o, la, th);
ofd_read_unlock(env, fo);
out_tx:
ofd_trans_stop(env, ofd, th, rc);
}
/**
* Prepare buffers for read request processing.
*
* This function converts remote buffers from client to local buffers
* and prepares the latter.
*
* \param[in] env execution environment
* \param[in] exp OBD export of client
* \param[in] ofd OFD device
* \param[in] fid FID of object
* \param[in] la object attributes
* \param[in] oa OBDO structure from client
* \param[in] niocount number of remote buffers
* \param[in] rnb remote buffers
* \param[in] nr_local number of local buffers
* \param[in] lnb local buffers
* \param[in] jobid job ID name
*
* \retval 0 on successful prepare
* \retval negative value on error
*/
static int ofd_preprw_read(const struct lu_env *env, struct obd_export *exp,
struct ofd_device *ofd, const struct lu_fid *fid,
struct lu_attr *la, struct obdo *oa, int niocount,
struct niobuf_remote *rnb, int *nr_local,
struct niobuf_local *lnb)
{
struct ofd_object *fo;
int i, j, rc, tot_bytes = 0;
enum dt_bufs_type dbt = DT_BUFS_TYPE_READ;
int maxlnb = *nr_local;
__u64 begin, end;
ENTRY;
LASSERT(env != NULL);
fo = ofd_object_find(env, ofd, fid);
if (IS_ERR(fo))
RETURN(PTR_ERR(fo));
LASSERT(fo != NULL);
ofd_info(env)->fti_obj = fo;
ofd_handle_attrs(env, ofd, fo, oa);
if (!ofd_object_exists(fo))
GOTO(obj_put, rc = -ENOENT);
rc = ofd_check_repair_resource_ids(env, fo, oa);
if (unlikely(rc))
GOTO(obj_put, rc);
if (exp->exp_connection &&
LNetIsPeerLocal(&exp->exp_connection->c_peer.nid))
dbt |= DT_BUFS_TYPE_LOCAL;
begin = -1;
end = 0;
for (*nr_local = 0, i = 0, j = 0; i < niocount; i++) {
begin = min_t(__u64, begin, rnb[i].rnb_offset);
end = max_t(__u64, end, rnb[i].rnb_offset + rnb[i].rnb_len);
if (CFS_FAIL_CHECK(OBD_FAIL_OST_2BIG_NIOBUF))
rnb[i].rnb_len = 100 * 1024 * 1024;
rc = dt_bufs_get(env, ofd_object_child(fo), rnb + i,
lnb + j, maxlnb, dbt);
if (unlikely(rc < 0))
GOTO(buf_put, rc);
LASSERT(rc <= PTLRPC_MAX_BRW_PAGES);
/* correct index for local buffers to continue with */
j += rc;
*nr_local += rc;
maxlnb -= rc;
LASSERT(j <= PTLRPC_MAX_BRW_PAGES);
tot_bytes += rnb[i].rnb_len;
}
ofd_read_lock(env, fo);
if (!ofd_object_exists(fo))
GOTO(unlock, rc = -ENOENT);
if (ofd->ofd_lfsck_verify_pfid && oa->o_valid & OBD_MD_FLFID) {
rc = ofd_verify_ff(env, fo, oa);
if (rc != 0)
GOTO(unlock, rc);
}
LASSERT(*nr_local > 0 && *nr_local <= PTLRPC_MAX_BRW_PAGES);
rc = dt_read_prep(env, ofd_object_child(fo), lnb, *nr_local);
if (unlikely(rc))
GOTO(unlock, rc);
ofd_read_unlock(env, fo);
ofd_access(env, ofd,
&(struct lu_fid) {
.f_seq = oa->o_parent_seq,
.f_oid = oa->o_parent_oid,
.f_ver = oa->o_stripe_idx,
},
begin, end,
tot_bytes,
niocount,
READ);
RETURN(0);
unlock:
ofd_read_unlock(env, fo);
buf_put:
dt_bufs_put(env, ofd_object_child(fo), lnb, *nr_local);
obj_put:
ofd_object_put(env, fo);
return rc;
}
/**
* Prepare buffers for write request processing.
*
* This function converts remote buffers from client to local buffers
* and prepares the latter. If there is recovery in progress and required
* object is missing then it can be re-created before write.
*
* \param[in] env execution environment
* \param[in] exp OBD export of client
* \param[in] ofd OFD device
* \param[in] fid FID of object
* \param[in] la object attributes
* \param[in] oa OBDO structure from client
* \param[in] objcount always 1
* \param[in] obj object data
* \param[in] rnb remote buffers
* \param[in] nr_local number of local buffers
* \param[in] lnb local buffers
* \param[in] jobid job ID name
*
* \retval 0 on successful prepare
* \retval negative value on error
*/
static int ofd_preprw_write(const struct lu_env *env, struct obd_export *exp,
struct ofd_device *ofd, const struct lu_fid *fid,
struct lu_attr *la, struct obdo *oa,
int objcount, struct obd_ioobj *obj,
struct niobuf_remote *rnb, int *nr_local,
struct niobuf_local *lnb)
{
struct ofd_object *fo;
int i, j, k, rc = 0, tot_bytes = 0;
enum dt_bufs_type dbt = DT_BUFS_TYPE_WRITE;
int maxlnb = *nr_local;
__u64 begin, end;
ENTRY;
LASSERT(env != NULL);
LASSERT(objcount == 1);
if (unlikely(test_bit(OBDF_RECOVERING, exp->exp_obd->obd_flags))) {
u64 seq = ostid_seq(&oa->o_oi);
u64 oid = ostid_id(&oa->o_oi);
struct ofd_seq *oseq;
oseq = ofd_seq_load(env, ofd, seq);
if (IS_ERR(oseq)) {
CERROR("%s: Can't find FID Sequence %#llx: rc = %d\n",
ofd_name(ofd), seq, (int)PTR_ERR(oseq));
GOTO(out, rc = -EINVAL);
}
if (oid > ofd_seq_last_oid(oseq)) {
int sync = 0;
int diff;
mutex_lock(&oseq->os_create_lock);
diff = oid - ofd_seq_last_oid(oseq);
/* Do sync create if the seq is about to used up */
sync = ofd_seq_is_exhausted(ofd, oa);
if (sync < 0) {
mutex_unlock(&oseq->os_create_lock);
ofd_seq_put(env, oseq);
GOTO(out, rc = sync);
}
while (diff > 0) {
u64 next_id = ofd_seq_last_oid(oseq) + 1;
int count = ofd_precreate_batch(ofd, diff);
rc = ofd_precreate_objects(env, ofd, next_id,
oseq, count, sync,
false);
if (rc < 0) {
mutex_unlock(&oseq->os_create_lock);
ofd_seq_put(env, oseq);
GOTO(out, rc);
}
diff -= rc;
}
mutex_unlock(&oseq->os_create_lock);
}
ofd_seq_put(env, oseq);
}
/* Process incoming grant info, set OBD_BRW_GRANTED flag and grant some
* space back if possible, we have to do this outside of the lock as
* grant preparation may need to sync whole fs thus wait for all the
* transactions to complete. */
tgt_grant_prepare_write(env, exp, oa, rnb, obj->ioo_bufcnt);
if (CFS_FAIL_CHECK(OBD_FAIL_OST_GRANT_PREPARE))
GOTO(err_commit, rc = -EIO);
fo = ofd_object_find(env, ofd, fid);
if (IS_ERR(fo))
GOTO(err_commit, rc = PTR_ERR(fo));
LASSERT(fo != NULL);
ofd_info(env)->fti_obj = fo;
if (!ofd_object_exists(fo)) {
CERROR("%s: BRW to missing obj "DOSTID"\n",
exp->exp_obd->obd_name, POSTID(&obj->ioo_oid));
GOTO(err_put, rc = -ENOENT);
}
if (exp->exp_connection &&
LNetIsPeerLocal(&exp->exp_connection->c_peer.nid))
dbt |= DT_BUFS_TYPE_LOCAL;
begin = -1;
end = 0;
/* parse remote buffers to local buffers and prepare the latter */
for (*nr_local = 0, i = 0, j = 0; i < obj->ioo_bufcnt; i++) {
begin = min_t(__u64, begin, rnb[i].rnb_offset);
end = max_t(__u64, end, rnb[i].rnb_offset + rnb[i].rnb_len);
if (CFS_FAIL_CHECK(OBD_FAIL_OST_2BIG_NIOBUF))
rnb[i].rnb_len += PAGE_SIZE;
rc = dt_bufs_get(env, ofd_object_child(fo),
rnb + i, lnb + j, maxlnb, dbt);
if (unlikely(rc < 0))
GOTO(err_nolock, rc);
LASSERT(rc <= PTLRPC_MAX_BRW_PAGES);
/* correct index for local buffers to continue with */
for (k = 0; k < rc; k++) {
lnb[j+k].lnb_flags = rnb[i].rnb_flags;
lnb[j+k].lnb_flags &= ~OBD_BRW_LOCALS;
if (!(rnb[i].rnb_flags & OBD_BRW_GRANTED))
lnb[j+k].lnb_rc = -ENOSPC;
}
j += rc;
*nr_local += rc;
maxlnb -= rc;
LASSERT(j <= PTLRPC_MAX_BRW_PAGES);
tot_bytes += rnb[i].rnb_len;
}
LASSERT(*nr_local > 0 && *nr_local <= PTLRPC_MAX_BRW_PAGES);
ofd_read_lock(env, fo);
if (!ofd_object_exists(fo)) {
CERROR("%s: BRW to missing obj "DOSTID": rc = -ENOENT\n",
exp->exp_obd->obd_name, POSTID(&obj->ioo_oid));
GOTO(err, rc = -ENOENT);
}
if (ofd->ofd_lfsck_verify_pfid && oa->o_valid & OBD_MD_FLFID) {
rc = ofd_verify_ff(env, fo, oa);
if (rc != 0)
GOTO(err, rc);
}
/* need to verify layout version */
if (oa->o_valid & OBD_MD_LAYOUT_VERSION) {
rc = ofd_verify_layout_version(env, fo, oa);
if (rc)
GOTO(err, rc);
}
rc = dt_write_prep(env, ofd_object_child(fo), lnb, *nr_local);
if (unlikely(rc != 0))
GOTO(err, rc);
ofd_read_unlock(env, fo);
ofd_access(env, ofd,
&(struct lu_fid) {
.f_seq = oa->o_parent_seq,
.f_oid = oa->o_parent_oid,
.f_ver = oa->o_stripe_idx,
},
begin, end,
tot_bytes,
obj->ioo_bufcnt,
WRITE);
RETURN(0);
err:
ofd_read_unlock(env, fo);
err_nolock:
dt_bufs_put(env, ofd_object_child(fo), lnb, *nr_local);
err_put:
ofd_object_put(env, fo);
err_commit:
/* tgt_grant_prepare_write() was called, so we must commit */
tgt_grant_commit(exp, oa->o_grant_used, rc);
/* dealloc grants, client won't receive them */
tgt_grant_dealloc(exp, oa);
out:
/* let's still process incoming grant information packed in the oa,
* but without enforcing grant since we won't proceed with the write.
* Just like a read request actually. */
tgt_grant_prepare_read(env, exp, oa);
return rc;
}
/**
* Prepare bulk IO requests for processing.
*
* This function does initial checks of IO and calls corresponding
* functions for read/write processing.
*
* \param[in] env execution environment
* \param[in] cmd IO type (read/write)
* \param[in] exp OBD export of client
* \param[in] oa OBDO structure from request
* \param[in] objcount always 1
* \param[in] obj object data
* \param[in] rnb remote buffers
* \param[in] nr_local number of local buffers
* \param[in] lnb local buffers
*
* \retval 0 on successful prepare
* \retval negative value on error
*/
int ofd_preprw(const struct lu_env *env, int cmd, struct obd_export *exp,
struct obdo *oa, int objcount, struct obd_ioobj *obj,
struct niobuf_remote *rnb, int *nr_local,
struct niobuf_local *lnb)
{
struct tgt_session_info *tsi = tgt_ses_info(env);
struct ofd_device *ofd = ofd_exp(exp);
struct ofd_thread_info *info;
const struct lu_fid *fid = &oa->o_oi.oi_fid;
int rc = 0;
if (*nr_local > PTLRPC_MAX_BRW_PAGES) {
CERROR("%s: bulk has too many pages %d, which exceeds the maximum pages per RPC of %d\n",
exp->exp_obd->obd_name, *nr_local, PTLRPC_MAX_BRW_PAGES);
RETURN(-EPROTO);
}
if (tgt_ses_req(tsi) == NULL) { /* echo client case */
info = ofd_info_init(env, exp);
} else {
info = tsi2ofd_info(tsi);
}
LASSERT(oa != NULL);
if (CFS_FAIL_CHECK(OBD_FAIL_SRV_ENOENT)) {
struct ofd_seq *oseq;
oseq = ofd_seq_load(env, ofd, ostid_seq(&oa->o_oi));
if (IS_ERR(oseq)) {
CERROR("%s: Can not find seq for "DOSTID
": rc = %ld\n", ofd_name(ofd), POSTID(&oa->o_oi),
PTR_ERR(oseq));
RETURN(-EINVAL);
}
if (oseq->os_destroys_in_progress == 0) {
/* don't fail lookups for orphan recovery, it causes
* later LBUGs when objects still exist during
* precreate */
ofd_seq_put(env, oseq);
RETURN(-ENOENT);
}
ofd_seq_put(env, oseq);
}
LASSERT(objcount == 1);
LASSERT(obj->ioo_bufcnt > 0);
if (cmd == OBD_BRW_WRITE) {
la_from_obdo(&info->fti_attr, oa, OBD_MD_FLGETATTR);
rc = ofd_preprw_write(env, exp, ofd, fid, &info->fti_attr, oa,
objcount, obj, rnb, nr_local, lnb);
} else if (cmd == OBD_BRW_READ) {
tgt_grant_prepare_read(env, exp, oa);
rc = ofd_preprw_read(env, exp, ofd, fid, &info->fti_attr, oa,
obj->ioo_bufcnt, rnb, nr_local, lnb);
} else {
CERROR("%s: wrong cmd %d received!\n",
exp->exp_obd->obd_name, cmd);
rc = -EPROTO;
}
RETURN(rc);
}
/**
* Drop reference on local buffers for read bulk IO.
*
* This will free all local buffers use by this read request.
*
* \param[in] env execution environment
* \param[in] ofd OFD device
* \param[in] fid object FID
* \param[in] objcount always 1
* \param[in] niocount number of local buffers
* \param[in] lnb local buffers
*
* \retval 0 on successful execution
* \retval negative value on error
*/
static int
ofd_commitrw_read(const struct lu_env *env, struct ofd_device *ofd,
const struct lu_fid *fid, int objcount, int niocount,
struct niobuf_local *lnb)
{
struct ofd_object *fo;
ENTRY;
LASSERT(niocount > 0);
fo = ofd_info(env)->fti_obj;
LASSERT(fo != NULL);
/*
* there is no guarantee the object still exists as the client
* behind this RPC could have been evicted allowing concurrent
* OST_DESTROY to remove the object.
*/
dt_bufs_put(env, ofd_object_child(fo), lnb, niocount);
ofd_object_put(env, fo);
RETURN(0);
}
/**
* Set attributes of object during write bulk IO processing.
*
* Change object attributes and write parent FID into extended
* attributes when needed.
*
* \param[in] env execution environment
* \param[in] ofd OFD device
* \param[in] ofd_obj OFD object
* \param[in] la object attributes
* \param[in] oa obdo
*
* \retval 0 on successful attributes update
* \retval negative value on error
*/
static int
ofd_write_attr_set(const struct lu_env *env, struct ofd_device *ofd,
struct ofd_object *ofd_obj, struct lu_attr *la,
struct obdo *oa)
{
struct ofd_thread_info *info = ofd_info(env);
struct filter_fid *ff = &info->fti_mds_fid;
__u64 valid = la->la_valid;
__u32 flags = la->la_flags;
struct thandle *th;
struct dt_object *dt_obj;
int fl = 0;
int rc;
ENTRY;
LASSERT(la);
dt_obj = ofd_object_child(ofd_obj);
LASSERT(dt_obj != NULL);
la->la_valid &= LA_UID | LA_GID | LA_PROJID;
if (oa->o_valid & OBD_MD_FLFLAGS && oa->o_flags & LUSTRE_ENCRYPT_FL &&
!CFS_FAIL_CHECK(OBD_FAIL_LFSCK_NO_ENCFLAG)) {
la->la_valid |= LA_FLAGS;
la->la_flags = LUSTRE_ENCRYPT_FL;
}
rc = ofd_attr_handle_id(env, ofd_obj, la, 0 /* !is_setattr */);
if (rc != 0)
GOTO(out, rc);
if (!la->la_valid && !(oa->o_valid &
(OBD_MD_FLFID | OBD_MD_FLOSTLAYOUT | OBD_MD_LAYOUT_VERSION)))
/* no attributes to set */
GOTO(out, rc = 0);
th = ofd_trans_create(env, ofd);
if (IS_ERR(th))
GOTO(out, rc = PTR_ERR(th));
if (la->la_valid) {
rc = dt_declare_attr_set(env, dt_obj, la, th);
if (rc)
GOTO(out_tx, rc);
}
if (oa->o_valid & (OBD_MD_FLFID | OBD_MD_FLOSTLAYOUT |
OBD_MD_LAYOUT_VERSION)) {
rc = dt_declare_xattr_set(env, dt_obj, NULL, &info->fti_buf,
XATTR_NAME_FID, 0, th);
if (rc)
GOTO(out_tx, rc);
}
/* We don't need a transno for this operation which will be re-executed
* anyway when the OST_WRITE (with a transno assigned) is replayed */
rc = dt_trans_start_local(env, ofd->ofd_osd, th);
if (rc)
GOTO(out_tx, rc);
ofd_read_lock(env, ofd_obj);
rc = ofd_attr_handle_id(env, ofd_obj, la, 0 /* !is_setattr */);
if (rc != 0)
GOTO(out_unlock, rc);
if (!la->la_valid && !(oa->o_valid &
(OBD_MD_FLFID | OBD_MD_FLOSTLAYOUT | OBD_MD_LAYOUT_VERSION)))
/* no attributes to set */
GOTO(out_unlock, rc = 0);
/* set uid/gid/projid */
if (la->la_valid) {
rc = dt_attr_set(env, dt_obj, la, th);
if (rc)
GOTO(out_unlock, rc);
if (!(la->la_mode & (S_ISUID | S_ISGID | S_ISVTX)))
ofd_obj->ofo_resource_ids_set = 1;
}
fl = ofd_object_ff_update(env, ofd_obj, oa, ff);
if (fl <= 0)
GOTO(out_unlock, rc = fl);
/* set filter fid EA.
* FIXME: it holds read lock of ofd object to modify the XATTR_NAME_FID
* while the write lock should be held. However, it should work because
* write RPCs only modify ff_{parent,layout} and those information will
* be the same from all the write RPCs. The reason that fl is not used
* in dt_xattr_set() is to allow this race. */
if (CFS_FAIL_CHECK(OBD_FAIL_LFSCK_NOPFID))
GOTO(out_unlock, rc);
if (CFS_FAIL_CHECK(OBD_FAIL_LFSCK_UNMATCHED_PAIR1))
ff->ff_parent.f_oid = cpu_to_le32(1UL << 31);
else if (CFS_FAIL_CHECK(OBD_FAIL_LFSCK_UNMATCHED_PAIR2))
le32_add_cpu(&ff->ff_parent.f_oid, -1);
info->fti_buf.lb_buf = ff;
info->fti_buf.lb_len = sizeof(*ff);
rc = dt_xattr_set(env, dt_obj, &info->fti_buf, XATTR_NAME_FID, 0, th);
if (rc == 0)
filter_fid_le_to_cpu(&ofd_obj->ofo_ff, ff, sizeof(*ff));
GOTO(out_unlock, rc);
out_unlock:
ofd_read_unlock(env, ofd_obj);
out_tx:
dt_trans_stop(env, ofd->ofd_osd, th);
out:
la->la_valid = valid;
la->la_flags = flags;
return rc;
}
struct ofd_soft_sync_callback {
struct dt_txn_commit_cb ossc_cb;
struct obd_export *ossc_exp;
};
/**
* Callback function for "soft sync" update.
*
* Reset fed_soft_sync_count upon committing the "soft_sync" update.
* See ofd_soft_sync_cb_add() below for more details on soft sync.
*
* \param[in] env execution environment
* \param[in] th transaction handle
* \param[in] cb callback data
* \param[in] err error code
*/
static void ofd_cb_soft_sync(struct lu_env *env, struct thandle *th,
struct dt_txn_commit_cb *cb, int err)
{
struct ofd_soft_sync_callback *ossc;
ossc = container_of(cb, struct ofd_soft_sync_callback, ossc_cb);
CDEBUG(D_INODE, "export %p soft sync count is reset\n", ossc->ossc_exp);
atomic_set(&ossc->ossc_exp->exp_filter_data.fed_soft_sync_count, 0);
class_export_cb_put(ossc->ossc_exp);
OBD_FREE_PTR(ossc);
}
/**
* Add callback for "soft sync" processing.
*
* The "soft sync" mechanism does asynchronous commit when OBD_BRW_SOFT_SYNC
* flag is set in client buffers. The intention is for this operation to
* commit pages belonging to a client which has "too many" outstanding
* unstable pages in its cache. See LU-2139 for details.
*
* This function adds callback to be called when commit is done.
*
* \param[in] th transaction handle
* \param[in] exp OBD export of client
*
* \retval 0 on successful callback adding
* \retval negative value on error
*/
static int ofd_soft_sync_cb_add(struct thandle *th, struct obd_export *exp)
{
struct ofd_soft_sync_callback *ossc;
struct dt_txn_commit_cb *dcb;
int rc;
OBD_ALLOC_PTR(ossc);
if (ossc == NULL)
return -ENOMEM;
ossc->ossc_exp = class_export_cb_get(exp);
dcb = &ossc->ossc_cb;
dcb->dcb_func = ofd_cb_soft_sync;
INIT_LIST_HEAD(&dcb->dcb_linkage);
strscpy(dcb->dcb_name, "ofd_cb_soft_sync", sizeof(dcb->dcb_name));
rc = dt_trans_cb_add(th, dcb);
if (rc) {
class_export_cb_put(exp);
OBD_FREE_PTR(ossc);
}
return rc;
}
/**
* Commit bulk IO buffers to the storage.
*
* This function finalizes write IO processing by writing data to the disk.
* That write can be synchronous or asynchronous depending on buffers flags.
*
* \param[in] env execution environment
* \param[in] exp OBD export of client
* \param[in] ofd OFD device
* \param[in] fid FID of object
* \param[in] la object attributes
* \param[in] ff parent FID of object
* \param[in] objcount always 1
* \param[in] niocount number of local buffers
* \param[in] lnb local buffers
* \param[in] granted grant space consumed for the bulk I/O
* \param[in] old_rc result of processing at this point
*
* \retval 0 on successful commit
* \retval negative value on error
*/
static int
ofd_commitrw_write(const struct lu_env *env, struct obd_export *exp,
struct ofd_device *ofd, const struct lu_fid *fid,
struct lu_attr *la, struct obdo *oa, int objcount,
int niocount, struct niobuf_local *lnb,
unsigned long granted, int old_rc)
{
struct ofd_thread_info *info = ofd_info(env);
struct filter_export_data *fed = &exp->exp_filter_data;
struct ofd_object *fo;
struct dt_object *o;
struct thandle *th;
int rc = 0;
int rc2 = 0;
int retries = 0;
int i, restart = 0;
bool soft_sync = false;
bool cb_registered = false;
bool fake_write = false;
ENTRY;
LASSERT(objcount == 1);
fo = ofd_info(env)->fti_obj;
LASSERT(fo != NULL);
o = ofd_object_child(fo);
LASSERT(o != NULL);
if (old_rc)
GOTO(out, rc = old_rc);
if (!ofd_object_exists(fo))
GOTO(out, rc = -ENOENT);
rc = ofd_check_resource_ids(env, fo, oa);
if (unlikely(rc))
GOTO(out, rc);
/*
* The first write to each object must set some attributes. It is
* important to set the uid/gid before calling
* dt_declare_write_commit() since quota enforcement is now handled in
* declare phases.
*/
rc = ofd_write_attr_set(env, ofd, fo, la, oa);
if (rc)
GOTO(out, rc);
la->la_valid &= LA_ATIME | LA_MTIME | LA_CTIME;
/* do fake write, to simulate the write case for performance testing */
if (CFS_FAIL_CHECK_QUIET(OBD_FAIL_OST_FAKE_RW)) {
struct niobuf_local *last = &lnb[niocount - 1];
__u64 file_size = last->lnb_file_offset + last->lnb_len;
__u64 valid = la->la_valid;
la->la_valid = LA_SIZE;
la->la_size = 0;
rc = dt_attr_get(env, o, la);
if (rc < 0 && rc != -ENOENT)
GOTO(out, rc);
if (file_size < la->la_size)
file_size = la->la_size;
/* dirty inode by setting file size */
la->la_valid = valid | LA_SIZE;
la->la_size = file_size;
fake_write = true;
}
retry:
CFS_FAIL_TIMEOUT(OBD_FAIL_OFD_COMMITRW_DELAY, cfs_fail_val);
th = ofd_trans_create(env, ofd);
if (IS_ERR(th))
GOTO(out, rc = PTR_ERR(th));
th->th_sync |= ofd->ofd_sync_journal;
if (th->th_sync == 0) {
for (i = 0; i < niocount; i++) {
if (!(lnb[i].lnb_flags & OBD_BRW_ASYNC)) {
th->th_sync = 1;
break;
}
if (lnb[i].lnb_flags & OBD_BRW_SOFT_SYNC)
soft_sync = true;
}
}
if (CFS_FAIL_CHECK(OBD_FAIL_OST_DQACQ_NET))
GOTO(out_stop, rc = -EINPROGRESS);
if (likely(!fake_write)) {
rc = dt_declare_write_commit(env, o, lnb, niocount, th);
if (rc)
GOTO(out_stop, rc);
}
/* don't update atime on disk if it is older */
if (la->la_valid & LA_ATIME && la->la_atime <= fo->ofo_atime_ondisk)
la->la_valid &= ~LA_ATIME;
if (la->la_valid) {
/* update [mac]time if needed */
rc = dt_declare_attr_set(env, o, la, th);
if (rc)
GOTO(out_stop, rc);
}
rc = ofd_trans_start(env, ofd, fo, th);
if (rc)
GOTO(out_stop, rc);
ofd_read_lock(env, fo);
if (!ofd_object_exists(fo))
GOTO(out_unlock, rc = -ENOENT);
/* Don't update timestamps if this write is older than a
* setattr which modifies the timestamps. b=10150 */
if (la->la_valid && tgt_fmd_check(exp, fid, info->fti_xid)) {
rc = dt_attr_set(env, o, la, th);
if (rc)
GOTO(out_unlock, rc);
if (la->la_valid & LA_ATIME)
fo->ofo_atime_ondisk = la->la_atime;
}
if (likely(!fake_write)) {
CFS_FAIL_TIMEOUT_ORSET(OBD_FAIL_OST_WR_ATTR_DELAY,
CFS_FAIL_ONCE, cfs_fail_val);
rc = dt_write_commit(env, o, lnb, niocount, th, oa->o_size);
if (rc) {
restart = th->th_restart_tran;
GOTO(out_unlock, rc);
}
}
/* get attr to return */
rc = dt_attr_get(env, o, la);
out_unlock:
ofd_read_unlock(env, fo);
out_stop:
/* Force commit to make the just-deleted blocks
* reusable. LU-456 */
if (rc == -ENOSPC)
th->th_sync = 1;
/* do this before trans stop in case commit has finished */
if (!th->th_sync && soft_sync && !cb_registered) {
ofd_soft_sync_cb_add(th, exp);
cb_registered = true;
}
if (rc == 0 && granted > 0) {
if (tgt_grant_commit_cb_add(th, exp, granted) == 0)
granted = 0;
}
rc2 = ofd_trans_stop(env, ofd, th, restart ? 0 : rc);
if (!rc)
rc = rc2;
if (rc == -ENOSPC && retries++ < 3) {
CDEBUG(D_INODE, "retry after force commit, retries:%d\n",
retries);
goto retry;
}
if (restart) {
retries++;
restart = 0;
if (retries % 10000 == 0)
CERROR("%s: restart IO write too many times: %d\n",
ofd_name(ofd), retries);
CDEBUG(D_INODE, "retry transaction, retries:%d\n",
retries);
goto retry;
}
if (!soft_sync)
/* reset fed_soft_sync_count upon non-SOFT_SYNC RPC */
atomic_set(&fed->fed_soft_sync_count, 0);
else if (atomic_inc_return(&fed->fed_soft_sync_count) ==
ofd->ofd_soft_sync_limit)
dt_commit_async(env, ofd->ofd_osd);
out:
dt_bufs_put(env, o, lnb, niocount);
ofd_object_put(env, fo);
if (granted > 0)
tgt_grant_commit(exp, granted, old_rc);
if (rc)
/* dealloc grants, client won't receive them */
tgt_grant_dealloc(exp, oa);
RETURN(rc);
}
/**
* Commit bulk IO to the storage.
*
* This is companion function to the ofd_preprw(). It finishes bulk IO
* request processing by committing buffers to the storage (WRITE) and/or
* freeing those buffers (read/write). See ofd_commitrw_read() and
* ofd_commitrw_write() for details about each type of IO.
*
* \param[in] env execution environment
* \param[in] cmd IO type (READ/WRITE)
* \param[in] exp OBD export of client
* \param[in] oa OBDO structure from client
* \param[in] objcount always 1
* \param[in] obj object data
* \param[in] rnb remote buffers
* \param[in] npages number of local buffers
* \param[in] lnb local buffers
* \param[in] old_rc result of processing at this point
*
* \retval 0 on successful commit
* \retval negative value on error
*/
int ofd_commitrw(const struct lu_env *env, int cmd, struct obd_export *exp,
struct obdo *oa, int objcount, struct obd_ioobj *obj,
struct niobuf_remote *rnb, int npages,
struct niobuf_local *lnb, int old_rc, int nob, ktime_t kstart)
{
struct tgt_session_info *tsi = tgt_ses_info(env);
struct ofd_thread_info *info = ofd_info(env);
struct ofd_device *ofd = ofd_exp(exp);
const struct lu_fid *fid = &oa->o_oi.oi_fid;
struct ldlm_namespace *ns = ofd->ofd_namespace;
struct ldlm_resource *rs = NULL;
char *jobid;
__u64 valid;
int rc = 0;
int root_squash = 0;
LASSERT(npages > 0);
if (tgt_ses_req(tsi) == NULL) { /* echo client case */
jobid = NULL;
} else {
jobid = tsi->tsi_jobid;
}
if (cmd == OBD_BRW_WRITE) {
struct lu_nodemap *nodemap;
__u32 mapped_uid, mapped_gid, mapped_projid;
/* doing this before the commit operation places the counter
* update almost immediately after reply to the client, which
* gives reasonable time stats and lets us use the actual
* bytes of i/o (rather than requested)
*/
ofd_counter_incr(exp, LPROC_OFD_STATS_WRITE_BYTES, jobid, nob);
ofd_counter_incr(exp, LPROC_OFD_STATS_WRITE, jobid,
ktime_us_delta(ktime_get(), kstart));
mapped_uid = oa->o_uid;
mapped_gid = oa->o_gid;
mapped_projid = oa->o_projid;
nodemap = nodemap_get_from_exp(exp);
if (!IS_ERR(nodemap)) {
mapped_uid = nodemap_map_id(nodemap, NODEMAP_UID,
NODEMAP_FS_TO_CLIENT,
oa->o_uid);
mapped_gid = nodemap_map_id(nodemap, NODEMAP_GID,
NODEMAP_FS_TO_CLIENT,
oa->o_gid);
mapped_projid = nodemap_map_id(nodemap, NODEMAP_PROJID,
NODEMAP_FS_TO_CLIENT,
oa->o_projid);
} else if (old_rc == 0) {
/* always allow ECHO client */
if (strcmp(obd_uuid2str(&exp->exp_client_uuid),
LUSTRE_ECHO_UUID) != 0 ||
exp->exp_connection)
old_rc = PTR_ERR(nodemap);
}
if (!IS_ERR_OR_NULL(nodemap)) {
/* do not bypass quota enforcement if squashed uid or
* offset root without local_admin RBAC role.
* "mapped_uid == 0" is an optimization to avoid calling
* is_local_root() which returns false for regular users
*/
if (unlikely(mapped_uid == nodemap->nm_squash_uid ||
(mapped_uid == 0 &&
!is_local_root(oa->o_uid, nodemap)))) {
int idx;
for (idx = 0; idx < npages; idx++)
lnb[idx].lnb_flags &=
~OBD_BRW_SYS_RESOURCE;
root_squash = 1;
}
nodemap_putref(nodemap);
}
valid = OBD_MD_FLUID | OBD_MD_FLGID | OBD_MD_FLPROJID |
OBD_MD_FLATIME | OBD_MD_FLMTIME | OBD_MD_FLCTIME;
la_from_obdo(&info->fti_attr, oa, valid);
rc = ofd_commitrw_write(env, exp, ofd, fid, &info->fti_attr,
oa, objcount, npages, lnb,
oa->o_grant_used, old_rc);
if (rc == 0)
obdo_from_la(oa, &info->fti_attr,
OFD_VALID_FLAGS | LA_GID | LA_UID |
LA_PROJID);
else
obdo_from_la(oa, &info->fti_attr, LA_GID | LA_UID |
LA_PROJID);
/* don't report overquota flag if we failed before reaching
* commit */
if (old_rc == 0 && (rc == 0 || rc == -EDQUOT)) {
/* return the overquota flags to client */
if (lnb[0].lnb_flags & OBD_BRW_OVER_USRQUOTA) {
if (oa->o_valid & OBD_MD_FLFLAGS)
oa->o_flags |= OBD_FL_NO_USRQUOTA;
else
oa->o_flags = OBD_FL_NO_USRQUOTA;
}
if (lnb[0].lnb_flags & OBD_BRW_OVER_GRPQUOTA) {
if (oa->o_valid & OBD_MD_FLFLAGS)
oa->o_flags |= OBD_FL_NO_GRPQUOTA;
else
oa->o_flags = OBD_FL_NO_GRPQUOTA;
}
if (lnb[0].lnb_flags & OBD_BRW_OVER_PRJQUOTA) {
if (oa->o_valid & OBD_MD_FLFLAGS)
oa->o_flags |= OBD_FL_NO_PRJQUOTA;
else
oa->o_flags = OBD_FL_NO_PRJQUOTA;
}
if (lnb[0].lnb_flags & OBD_BRW_ROOT_PRJQUOTA)
oa->o_flags |= OBD_FL_ROOT_PRJQUOTA;
if (root_squash)
oa->o_flags |= OBD_FL_ROOT_SQUASH;
oa->o_valid |= OBD_MD_FLFLAGS;
oa->o_valid |= OBD_MD_FLALLQUOTA;
}
/**
* Update LVB after writing finish for server lock, see
* comments in ldlm_lock_decref_internal(), If this is a
* local lock on a server namespace and this was the last
* reference, lock will be destroyed directly thus there
* is no chance for ldlm_request_cancel() to update lvb.
*/
if (rc == 0 && (rnb[0].rnb_flags & OBD_BRW_SRVLOCK)) {
ost_fid_build_resid(fid, &info->fti_resid);
rs = ldlm_resource_get(ns, &info->fti_resid,
LDLM_EXTENT, 0);
if (!IS_ERR(rs)) {
ldlm_res_lvbo_update(rs, NULL, 1);
ldlm_resource_putref(rs);
}
}
/* Convert back to client IDs. LU-9671.
* nodemap_get_from_exp() may fail due to nodemap deactivated,
* server ID will be returned back to client in that case. */
oa->o_uid = mapped_uid;
oa->o_gid = mapped_gid;
oa->o_projid = mapped_projid;
} else if (cmd == OBD_BRW_READ) {
/* see comment on LPROC_OFD_STATS_WRITE_BYTES usage above */
ofd_counter_incr(exp, LPROC_OFD_STATS_READ_BYTES, jobid, nob);
ofd_counter_incr(exp, LPROC_OFD_STATS_READ, jobid,
ktime_us_delta(ktime_get(), kstart));
rc = ofd_commitrw_read(env, ofd, fid, objcount,
npages, lnb);
if (old_rc)
rc = old_rc;
} else {
LBUG();
rc = -EPROTO;
}
RETURN(rc);
}
