Viewing: lproc_lod.c
// SPDX-License-Identifier: GPL-2.0
/*
* Copyright 2008 Sun Microsystems, Inc. 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/
*/
#define DEBUG_SUBSYSTEM S_CLASS
#include <lprocfs_status.h>
#include <obd_class.h>
#include <linux/seq_file.h>
#include "lod_internal.h"
#include <uapi/linux/lustre/lustre_param.h>
/*
* Notice, all the functions below (except for lod_procfs_init() and
* lod_procfs_fini()) are not supposed to be used directly. They are
* called by Linux kernel's procfs.
*/
#ifdef CONFIG_PROC_FS
static ssize_t dom_stripesize_show(struct kobject *kobj,
struct attribute *attr,
char *buf)
{
struct dt_device *dt = container_of(kobj, struct dt_device, dd_kobj);
struct lod_device *lod = dt2lod_dev(dt);
return scnprintf(buf, PAGE_SIZE, "%u\n",
lod->lod_dom_stripesize_max_kb << 10);
}
static inline int dom_stripesize_max_kb_update(struct lod_device *lod,
__u64 val)
{
/* 1GB is the limit */
if (val > (1ULL << 20))
return -ERANGE;
if (val > 0) {
if (val < LOD_DOM_MIN_SIZE_KB) {
LCONSOLE_INFO("Increasing provided stripe size to a minimum value %u\n",
LOD_DOM_MIN_SIZE_KB);
val = LOD_DOM_MIN_SIZE_KB;
} else if (val & (LOD_DOM_MIN_SIZE_KB - 1)) {
val &= ~(LOD_DOM_MIN_SIZE_KB - 1);
LCONSOLE_WARN("Changing provided stripe size to %llu (a multiple of minimum %u)\n",
val, LOD_DOM_MIN_SIZE_KB);
}
}
spin_lock(&lod->lod_lsfs_lock);
lod->lod_dom_stripesize_max_kb = val;
lod_dom_stripesize_recalc(lod);
spin_unlock(&lod->lod_lsfs_lock);
return 0;
}
static ssize_t dom_stripesize_store(struct kobject *kobj,
struct attribute *attr,
const char *buffer, size_t count)
{
struct dt_device *dt = container_of(kobj, struct dt_device, dd_kobj);
struct lod_device *lod = dt2lod_dev(dt);
u64 val;
int rc;
rc = sysfs_memparse(buffer, count, &val, "B");
if (rc < 0)
return rc;
rc = dom_stripesize_max_kb_update(lod, val >> 10);
if (rc)
return rc;
return count;
}
/* Old attribute name is still supported */
LUSTRE_RW_ATTR(dom_stripesize);
/* Show DoM maximum allowed stripe size. */
static ssize_t dom_stripesize_max_kb_show(struct kobject *kobj,
struct attribute *attr,
char *buf)
{
struct dt_device *dt = container_of(kobj, struct dt_device, dd_kobj);
struct lod_device *lod = dt2lod_dev(dt);
return scnprintf(buf, PAGE_SIZE, "%u\n",
lod->lod_dom_stripesize_max_kb);
}
/* Set DoM maximum allowed stripe size. */
static ssize_t dom_stripesize_max_kb_store(struct kobject *kobj,
struct attribute *attr,
const char *buffer, size_t count)
{
struct dt_device *dt = container_of(kobj, struct dt_device, dd_kobj);
struct lod_device *lod = dt2lod_dev(dt);
u64 val;
int rc;
rc = sysfs_memparse(buffer, count, &val, "KiB");
if (rc < 0)
return rc;
rc = dom_stripesize_max_kb_update(lod, val >> 10);
if (rc)
return rc;
return count;
}
LUSTRE_RW_ATTR(dom_stripesize_max_kb);
/* Show DoM default stripe size. */
static ssize_t dom_stripesize_cur_kb_show(struct kobject *kobj,
struct attribute *attr,
char *buf)
{
struct dt_device *dt = container_of(kobj, struct dt_device, dd_kobj);
struct lod_device *lod = dt2lod_dev(dt);
return scnprintf(buf, PAGE_SIZE, "%u\n",
lod->lod_dom_stripesize_cur_kb);
}
LUSTRE_RO_ATTR(dom_stripesize_cur_kb);
/* Show DoM threshold. */
static ssize_t dom_threshold_free_mb_show(struct kobject *kobj,
struct attribute *attr, char *buf)
{
struct dt_device *dt = container_of(kobj, struct dt_device, dd_kobj);
struct lod_device *lod = dt2lod_dev(dt);
return scnprintf(buf, PAGE_SIZE, "%llu\n",
lod->lod_dom_threshold_free_mb);
}
/* Set DoM default stripe size. */
static ssize_t dom_threshold_free_mb_store(struct kobject *kobj,
struct attribute *attr,
const char *buffer, size_t count)
{
struct dt_device *dt = container_of(kobj, struct dt_device, dd_kobj);
struct lod_device *lod = dt2lod_dev(dt);
u64 val;
int rc;
rc = sysfs_memparse_total(buffer, count, &val,
lod->lod_lsfs_total_mb << 20, "MiB");
if (rc < 0)
return rc;
val >>= 20;
spin_lock(&lod->lod_lsfs_lock);
lod->lod_dom_threshold_free_mb = val;
lod_dom_stripesize_recalc(lod);
spin_unlock(&lod->lod_lsfs_lock);
return count;
}
LUSTRE_RW_ATTR(dom_threshold_free_mb);
static ssize_t stripesize_show(struct kobject *kobj, struct attribute *attr,
char *buf)
{
struct dt_device *dt = container_of(kobj, struct dt_device,
dd_kobj);
struct lod_device *lod = dt2lod_dev(dt);
return scnprintf(buf, PAGE_SIZE, "%llu\n",
lod->lod_ost_descs.ltd_lov_desc.ld_default_stripe_size);
}
static ssize_t stripesize_store(struct kobject *kobj, struct attribute *attr,
const char *buffer, size_t count)
{
struct dt_device *dt = container_of(kobj, struct dt_device,
dd_kobj);
struct lod_device *lod = dt2lod_dev(dt);
u64 val;
int rc;
rc = sysfs_memparse(buffer, count, &val, "B");
if (rc < 0)
return rc;
lod_fix_desc_stripe_size(&val);
lod->lod_ost_descs.ltd_lov_desc.ld_default_stripe_size = val;
return count;
}
LUSTRE_RW_ATTR(stripesize);
/* Show default stripe offset. */
static ssize_t stripeoffset_show(struct kobject *kobj, struct attribute *attr,
char *buf)
{
struct dt_device *dt = container_of(kobj, struct dt_device,
dd_kobj);
struct lod_device *lod = dt2lod_dev(dt);
return scnprintf(buf, PAGE_SIZE, "%lld\n",
lod->lod_ost_descs.ltd_lov_desc.ld_default_stripe_offset);
}
/*
* Set default stripe offset.
*
* Usually contains -1 allowing Lustre to balance objects among OST
* otherwise may cause severe OST imbalance.
*/
static ssize_t stripeoffset_store(struct kobject *kobj,
struct attribute *attr,
const char *buffer, size_t count)
{
struct dt_device *dt = container_of(kobj, struct dt_device,
dd_kobj);
struct lod_device *lod = dt2lod_dev(dt);
long val;
int rc;
rc = kstrtol(buffer, 0, &val);
if (rc)
return rc;
if (val < -1 || val > LOV_MAX_STRIPE_COUNT)
return -ERANGE;
lod->lod_ost_descs.ltd_lov_desc.ld_default_stripe_offset = val;
return count;
}
LUSTRE_RW_ATTR(stripeoffset);
static ssize_t max_stripecount_show(struct kobject *kobj,
struct attribute *attr, char *buf)
{
struct dt_device *dt = container_of(kobj, struct dt_device, dd_kobj);
struct lod_device *lod = dt2lod_dev(dt);
return scnprintf(buf, PAGE_SIZE, "%u\n", lod->lod_max_stripecount);
}
static ssize_t max_stripecount_store(struct kobject *kobj,
struct attribute *attr,
const char *buffer, size_t count)
{
struct dt_device *dt = container_of(kobj, struct dt_device, dd_kobj);
struct lod_device *lod = dt2lod_dev(dt);
long val;
int rc;
rc = kstrtol(buffer, 0, &val);
if (rc)
return rc;
if (val < 0 || val > LOV_MAX_STRIPE_COUNT)
return -ERANGE;
lod->lod_max_stripecount = val;
return count;
}
LUSTRE_RW_ATTR(max_stripecount);
static ssize_t mirror_count_max_show(struct kobject *kobj,
struct attribute *attr, char *buf)
{
struct dt_device *dt = container_of(kobj, struct dt_device, dd_kobj);
struct lod_device *lod = dt2lod_dev(dt);
return scnprintf(buf, PAGE_SIZE, "%u\n", lod->lod_mirror_count_max);
}
static
ssize_t mirror_count_max_store(struct kobject *kobj, struct attribute *attr,
const char *buffer, size_t count)
{
struct dt_device *dt = container_of(kobj, struct dt_device, dd_kobj);
struct lod_device *lod = dt2lod_dev(dt);
long val;
int rc;
rc = kstrtol(buffer, 0, &val);
if (rc)
return rc;
if (val < 0 || val > LUSTRE_MIRROR_COUNT_MAX)
return -ERANGE;
lod->lod_mirror_count_max = val;
return count;
}
LUSTRE_RW_ATTR(mirror_count_max);
static ssize_t max_mdt_stripecount_show(struct kobject *kobj,
struct attribute *attr, char *buf)
{
struct dt_device *dt = container_of(kobj, struct dt_device, dd_kobj);
struct lod_device *lod = dt2lod_dev(dt);
return scnprintf(buf, PAGE_SIZE, "%u\n", lod->lod_max_mdt_stripecount);
}
static ssize_t max_mdt_stripecount_store(struct kobject *kobj,
struct attribute *attr,
const char *buffer, size_t count)
{
struct dt_device *dt = container_of(kobj, struct dt_device, dd_kobj);
struct lod_device *lod = dt2lod_dev(dt);
long val;
int rc;
rc = kstrtol(buffer, 0, &val);
if (rc)
return rc;
if (val < 0 || val > LMV_MAX_STRIPE_COUNT) /* any limitation? */
return -ERANGE;
lod->lod_max_mdt_stripecount = val;
return count;
}
LUSTRE_RW_ATTR(max_mdt_stripecount);
static ssize_t max_stripes_per_mdt_show(struct kobject *kobj,
struct attribute *attr, char *buf)
{
struct dt_device *dt = container_of(kobj, struct dt_device, dd_kobj);
struct lod_device *lod = dt2lod_dev(dt);
return scnprintf(buf, PAGE_SIZE, "%u\n", lod->lod_max_stripes_per_mdt);
}
static ssize_t max_stripes_per_mdt_store(struct kobject *kobj,
struct attribute *attr,
const char *buffer, size_t count)
{
struct dt_device *dt = container_of(kobj, struct dt_device, dd_kobj);
struct lod_device *lod = dt2lod_dev(dt);
long val;
int rc;
rc = kstrtol(buffer, 0, &val);
if (rc)
return rc;
if (val < 1 || val > LMV_MAX_STRIPES_PER_MDT) /* any limitation? */
return -ERANGE;
lod->lod_max_stripes_per_mdt = val;
return count;
}
LUSTRE_RW_ATTR(max_stripes_per_mdt);
/* Show default striping pattern (LOV_PATTERN_*). */
static ssize_t __stripetype_show(struct kobject *kobj, struct attribute *attr,
char *buf, bool is_mdt)
{
struct dt_device *dt = container_of(kobj, struct dt_device,
dd_kobj);
struct lod_device *lod = dt2lod_dev(dt);
struct lu_tgt_descs *ltd = is_mdt ? &lod->lod_mdt_descs :
&lod->lod_ost_descs;
return scnprintf(buf, PAGE_SIZE, "%u\n", ltd->ltd_lov_desc.ld_pattern);
}
static ssize_t mdt_stripetype_show(struct kobject *kobj, struct attribute *attr,
char *buf)
{
return __stripetype_show(kobj, attr, buf, true);
}
static ssize_t stripetype_show(struct kobject *kobj, struct attribute *attr,
char *buf)
{
return __stripetype_show(kobj, attr, buf, false);
}
/* Set default striping pattern (a number, not a human-readable string). */
static ssize_t __stripetype_store(struct kobject *kobj, struct attribute *attr,
const char *buffer, size_t count, bool is_mdt)
{
struct dt_device *dt = container_of(kobj, struct dt_device,
dd_kobj);
struct lod_device *lod = dt2lod_dev(dt);
struct lu_tgt_descs *ltd = is_mdt ? &lod->lod_mdt_descs :
&lod->lod_ost_descs;
u32 pattern;
int rc;
rc = kstrtouint(buffer, 0, &pattern);
if (rc)
return rc;
if (is_mdt)
lod_fix_lmv_desc_pattern(&pattern);
else
lod_fix_desc_pattern(&pattern);
ltd->ltd_lov_desc.ld_pattern = pattern;
return count;
}
static ssize_t mdt_stripetype_store(struct kobject *kobj,
struct attribute *attr, const char *buffer,
size_t count)
{
return __stripetype_store(kobj, attr, buffer, count, true);
}
static ssize_t stripetype_store(struct kobject *kobj,
struct attribute *attr, const char *buffer,
size_t count)
{
return __stripetype_store(kobj, attr, buffer, count, false);
}
LUSTRE_RW_ATTR(mdt_stripetype);
LUSTRE_RW_ATTR(stripetype);
/* Show default number of stripes. */
static ssize_t __stripecount_show(struct kobject *kobj, struct attribute *attr,
char *buf, bool is_mdt)
{
struct dt_device *dt = container_of(kobj, struct dt_device,
dd_kobj);
struct lod_device *lod = dt2lod_dev(dt);
struct lov_desc *desc = is_mdt ? &lod->lod_mdt_descs.ltd_lov_desc :
&lod->lod_ost_descs.ltd_lov_desc;
return scnprintf(buf, PAGE_SIZE, "%d\n",
(s16)(desc->ld_default_stripe_count + 1) - 1);
}
static ssize_t mdt_stripecount_show(struct kobject *kobj,
struct attribute *attr, char *buf)
{
return __stripecount_show(kobj, attr, buf, true);
}
static ssize_t stripecount_show(struct kobject *kobj, struct attribute *attr,
char *buf)
{
return __stripecount_show(kobj, attr, buf, false);
}
/* Set default number of stripes. */
static ssize_t __stripecount_store(struct kobject *kobj, struct attribute *attr,
const char *buffer, size_t count,
bool is_mdt)
{
struct dt_device *dt = container_of(kobj, struct dt_device,
dd_kobj);
struct lod_device *lod = dt2lod_dev(dt);
struct lu_tgt_descs *ltd = is_mdt ? &lod->lod_mdt_descs :
&lod->lod_ost_descs;
int stripe_count;
int rc;
rc = kstrtoint(buffer, 0, &stripe_count);
if (rc)
return rc;
if (stripe_count < -1)
return -ERANGE;
lod_fix_desc_stripe_count(&stripe_count);
ltd->ltd_lov_desc.ld_default_stripe_count = stripe_count;
return count;
}
static ssize_t mdt_stripecount_store(struct kobject *kobj,
struct attribute *attr,
const char *buffer, size_t count)
{
return __stripecount_store(kobj, attr, buffer, count, true);
}
static ssize_t stripecount_store(struct kobject *kobj,
struct attribute *attr,
const char *buffer, size_t count)
{
return __stripecount_store(kobj, attr, buffer, count, false);
}
LUSTRE_RW_ATTR(mdt_stripecount);
LUSTRE_RW_ATTR(stripecount);
/* Show number of targets. */
static ssize_t __numobd_show(struct kobject *kobj, struct attribute *attr,
char *buf, bool is_mdt)
{
struct dt_device *dt = container_of(kobj, struct dt_device,
dd_kobj);
struct lod_device *lod = dt2lod_dev(dt);
struct lu_tgt_descs *ltd = is_mdt ? &lod->lod_mdt_descs :
&lod->lod_ost_descs;
return scnprintf(buf, PAGE_SIZE, "%u\n",
ltd->ltd_lov_desc.ld_tgt_count);
}
static ssize_t mdt_numobd_show(struct kobject *kobj, struct attribute *attr,
char *buf)
{
return __numobd_show(kobj, attr, buf, true);
}
static ssize_t numobd_show(struct kobject *kobj, struct attribute *attr,
char *buf)
{
return __numobd_show(kobj, attr, buf, false);
}
LUSTRE_RO_ATTR(mdt_numobd);
LUSTRE_RO_ATTR(numobd);
/* Show number of active targets. */
static ssize_t __activeobd_show(struct kobject *kobj, struct attribute *attr,
char *buf, bool is_mdt)
{
struct dt_device *dt = container_of(kobj, struct dt_device,
dd_kobj);
struct lod_device *lod = dt2lod_dev(dt);
struct lu_tgt_descs *ltd = is_mdt ? &lod->lod_mdt_descs :
&lod->lod_ost_descs;
return scnprintf(buf, PAGE_SIZE, "%u\n",
ltd->ltd_lov_desc.ld_active_tgt_count);
}
static ssize_t mdt_activeobd_show(struct kobject *kobj, struct attribute *attr,
char *buf)
{
return __activeobd_show(kobj, attr, buf, true);
}
static ssize_t activeobd_show(struct kobject *kobj, struct attribute *attr,
char *buf)
{
return __activeobd_show(kobj, attr, buf, false);
}
LUSTRE_RO_ATTR(mdt_activeobd);
LUSTRE_RO_ATTR(activeobd);
/* Show UUID of LOD device. */
static ssize_t desc_uuid_show(struct kobject *kobj, struct attribute *attr,
char *buf)
{
struct dt_device *dt = container_of(kobj, struct dt_device,
dd_kobj);
struct lod_device *lod = dt2lod_dev(dt);
return scnprintf(buf, PAGE_SIZE, "%s\n",
lod->lod_ost_descs.ltd_lov_desc.ld_uuid.uuid);
}
LUSTRE_RO_ATTR(desc_uuid);
/*
* Show QoS priority parameter.
*
* The printed value is a percentage value (0-100%) indicating the priority
* of free space compared to performance. 0% means select OSTs equally
* regardless of their free space, 100% means select OSTs only by their free
* space even if it results in very imbalanced load on the OSTs.
*/
static ssize_t __qos_prio_free_show(struct kobject *kobj,
struct attribute *attr, char *buf,
bool is_mdt)
{
struct dt_device *dt = container_of(kobj, struct dt_device,
dd_kobj);
struct lod_device *lod = dt2lod_dev(dt);
struct lu_tgt_descs *ltd = is_mdt ? &lod->lod_mdt_descs :
&lod->lod_ost_descs;
return scnprintf(buf, PAGE_SIZE, "%d%%\n",
(ltd->ltd_qos.lq_prio_free * 100 + 255) >> 8);
}
static ssize_t mdt_qos_prio_free_show(struct kobject *kobj,
struct attribute *attr, char *buf)
{
return __qos_prio_free_show(kobj, attr, buf, true);
}
static ssize_t qos_prio_free_show(struct kobject *kobj,
struct attribute *attr, char *buf)
{
return __qos_prio_free_show(kobj, attr, buf, false);
}
/*
* Set QoS free space priority parameter.
*
* Set the relative priority of free OST space compared to OST load when OSTs
* are space imbalanced. See qos_priofree_show() for description of
* this parameter. See qos_threshold_rr_store() and lq_threshold_rr to
* determine what constitutes "space imbalanced" OSTs.
*/
static ssize_t __qos_prio_free_store(struct kobject *kobj,
struct attribute *attr,
const char *buffer, size_t count,
bool is_mdt)
{
struct dt_device *dt = container_of(kobj, struct dt_device,
dd_kobj);
struct lod_device *lod = dt2lod_dev(dt);
struct lu_tgt_descs *ltd = is_mdt ? &lod->lod_mdt_descs :
&lod->lod_ost_descs;
char buf[6], *tmp;
unsigned int val;
int rc;
/* "100%\n\0" should be largest string */
if (count >= sizeof(buf))
return -ERANGE;
strncpy(buf, buffer, sizeof(buf));
buf[sizeof(buf) - 1] = '\0';
tmp = strchr(buf, '%');
if (tmp)
*tmp = '\0';
rc = kstrtouint(buf, 0, &val);
if (rc)
return rc;
if (val > 100)
return -EINVAL;
ltd->ltd_qos.lq_prio_free = (val << 8) / 100;
set_bit(LQ_DIRTY, <d->ltd_qos.lq_flags);
set_bit(LQ_RESET, <d->ltd_qos.lq_flags);
return count;
}
static ssize_t mdt_qos_prio_free_store(struct kobject *kobj,
struct attribute *attr,
const char *buffer, size_t count)
{
return __qos_prio_free_store(kobj, attr, buffer, count, true);
}
static ssize_t qos_prio_free_store(struct kobject *kobj, struct attribute *attr,
const char *buffer, size_t count)
{
return __qos_prio_free_store(kobj, attr, buffer, count, false);
}
LUSTRE_RW_ATTR(mdt_qos_prio_free);
LUSTRE_RW_ATTR(qos_prio_free);
/* Show threshold for "same space on all OSTs" rule. */
static ssize_t __qos_threshold_rr_show(struct kobject *kobj,
struct attribute *attr, char *buf,
bool is_mdt)
{
struct dt_device *dt = container_of(kobj, struct dt_device,
dd_kobj);
struct lod_device *lod = dt2lod_dev(dt);
struct lu_tgt_descs *ltd = is_mdt ? &lod->lod_mdt_descs :
&lod->lod_ost_descs;
return scnprintf(buf, PAGE_SIZE, "%d%%\n",
(ltd->ltd_qos.lq_threshold_rr * 100 +
(QOS_THRESHOLD_MAX - 1)) / QOS_THRESHOLD_MAX);
}
static ssize_t mdt_qos_threshold_rr_show(struct kobject *kobj,
struct attribute *attr, char *buf)
{
return __qos_threshold_rr_show(kobj, attr, buf, true);
}
static ssize_t qos_threshold_rr_show(struct kobject *kobj,
struct attribute *attr, char *buf)
{
return __qos_threshold_rr_show(kobj, attr, buf, false);
}
/*
* Set threshold for "same space on all OSTs" rule.
*
* This sets the maximum percentage difference of free space between the most
* full and most empty OST in the currently available OSTs. If this percentage
* is exceeded, use the QoS allocator to select OSTs based on their available
* space so that more full OSTs are chosen less often, otherwise use the
* round-robin allocator for efficiency and performance.
*/
static ssize_t __qos_threshold_rr_store(struct kobject *kobj,
struct attribute *attr,
const char *buffer, size_t count,
bool is_mdt)
{
struct dt_device *dt = container_of(kobj, struct dt_device,
dd_kobj);
struct lod_device *lod = dt2lod_dev(dt);
struct lu_tgt_descs *ltd = is_mdt ? &lod->lod_mdt_descs :
&lod->lod_ost_descs;
char buf[6], *tmp;
unsigned int val;
int rc;
/* "100%\n\0" should be largest string */
if (count >= sizeof(buf))
return -ERANGE;
strncpy(buf, buffer, sizeof(buf));
buf[sizeof(buf) - 1] = '\0';
tmp = strchr(buf, '%');
if (tmp)
*tmp = '\0';
rc = kstrtouint(buf, 0, &val);
if (rc)
return rc;
if (val > 100)
return -EINVAL;
ltd->ltd_qos.lq_threshold_rr = (val * QOS_THRESHOLD_MAX) / 100;
set_bit(LQ_DIRTY, <d->ltd_qos.lq_flags);
return count;
}
static ssize_t mdt_qos_threshold_rr_store(struct kobject *kobj,
struct attribute *attr,
const char *buffer, size_t count)
{
return __qos_threshold_rr_store(kobj, attr, buffer, count, true);
}
static ssize_t qos_threshold_rr_store(struct kobject *kobj,
struct attribute *attr,
const char *buffer, size_t count)
{
return __qos_threshold_rr_store(kobj, attr, buffer, count, false);
}
LUSTRE_RW_ATTR(mdt_qos_threshold_rr);
LUSTRE_RW_ATTR(qos_threshold_rr);
/* Show expiration period used to refresh cached statfs data, which
* is used to implement QoS/RR striping allocation algorithm.
*/
static ssize_t __qos_maxage_show(struct kobject *kobj, struct attribute *attr,
char *buf, bool is_mdt)
{
struct dt_device *dt = container_of(kobj, struct dt_device,
dd_kobj);
struct lod_device *lod = dt2lod_dev(dt);
struct lu_tgt_descs *ltd = is_mdt ? &lod->lod_mdt_descs :
&lod->lod_ost_descs;
return scnprintf(buf, PAGE_SIZE, "%u\n",
ltd->ltd_lov_desc.ld_qos_maxage);
}
static ssize_t mdt_qos_maxage_show(struct kobject *kobj, struct attribute *attr,
char *buf)
{
return __qos_maxage_show(kobj, attr, buf, true);
}
static ssize_t qos_maxage_show(struct kobject *kobj, struct attribute *attr,
char *buf)
{
return __qos_maxage_show(kobj, attr, buf, true);
}
/* Set expiration period used to refresh cached statfs data. */
static ssize_t __qos_maxage_store(struct kobject *kobj, struct attribute *attr,
const char *buffer, size_t count, bool is_mdt)
{
struct dt_device *dt = container_of(kobj, struct dt_device,
dd_kobj);
struct lod_device *lod = dt2lod_dev(dt);
struct lu_tgt_descs *ltd = is_mdt ? &lod->lod_mdt_descs :
&lod->lod_ost_descs;
struct lustre_cfg_bufs bufs;
struct lu_device *next;
struct lustre_cfg *lcfg;
char str[32];
struct lu_tgt_desc *tgt;
int rc;
u32 val;
rc = kstrtouint(buffer, 0, &val);
if (rc)
return rc;
if (val <= 0)
return -EINVAL;
ltd->ltd_lov_desc.ld_qos_maxage = val;
/*
* propogate the value down to OSPs
*/
lustre_cfg_bufs_reset(&bufs, NULL);
snprintf(str, 32, "%smaxage=%u", PARAM_OSP, val);
lustre_cfg_bufs_set_string(&bufs, 1, str);
OBD_ALLOC(lcfg, lustre_cfg_len(bufs.lcfg_bufcount, bufs.lcfg_buflen));
if (lcfg == NULL)
return -ENOMEM;
lustre_cfg_init(lcfg, LCFG_PARAM, &bufs);
lod_getref(ltd);
ltd_foreach_tgt(ltd, tgt) {
next = &tgt->ltd_tgt->dd_lu_dev;
rc = next->ld_ops->ldo_process_config(NULL, next, lcfg);
if (rc)
CERROR("can't set maxage on #%d: %d\n",
tgt->ltd_index, rc);
}
lod_putref(lod, ltd);
OBD_FREE(lcfg, lustre_cfg_len(lcfg->lcfg_bufcount, lcfg->lcfg_buflens));
return count;
}
static ssize_t mdt_qos_maxage_store(struct kobject *kobj,
struct attribute *attr,
const char *buffer, size_t count)
{
return __qos_maxage_store(kobj, attr, buffer, count, true);
}
static ssize_t qos_maxage_store(struct kobject *kobj, struct attribute *attr,
const char *buffer, size_t count)
{
return __qos_maxage_store(kobj, attr, buffer, count, false);
}
LUSTRE_RW_ATTR(mdt_qos_maxage);
LUSTRE_RW_ATTR(qos_maxage);
static void *lod_tgts_seq_start(struct seq_file *p, loff_t *pos, bool is_mdt)
{
struct obd_device *obd = p->private;
struct lod_device *lod = lu2lod_dev(obd->obd_lu_dev);
struct lu_tgt_descs *ltd = is_mdt ? &lod->lod_mdt_descs :
&lod->lod_ost_descs;
LASSERT(obd != NULL);
lod_getref(ltd); /* released in lod_tgts_seq_stop */
if (*pos >= ltd->ltd_tgts_size)
return NULL;
*pos = find_next_bit(ltd->ltd_tgt_bitmap,
ltd->ltd_tgts_size, *pos);
if (*pos < ltd->ltd_tgts_size)
return LTD_TGT(ltd, *pos);
else
return NULL;
}
static void *lod_mdts_seq_start(struct seq_file *p, loff_t *pos)
{
return lod_tgts_seq_start(p, pos, true);
}
static void *lod_osts_seq_start(struct seq_file *p, loff_t *pos)
{
return lod_tgts_seq_start(p, pos, false);
}
static void lod_tgts_seq_stop(struct seq_file *p, void *v, bool is_mdt)
{
struct obd_device *obd = p->private;
struct lod_device *lod = lu2lod_dev(obd->obd_lu_dev);
struct lu_tgt_descs *ltd = is_mdt ? &lod->lod_mdt_descs :
&lod->lod_ost_descs;
LASSERT(obd != NULL);
lod_putref(lod, ltd);
}
static void lod_mdts_seq_stop(struct seq_file *p, void *v)
{
lod_tgts_seq_stop(p, v, true);
}
static void lod_osts_seq_stop(struct seq_file *p, void *v)
{
lod_tgts_seq_stop(p, v, false);
}
static void *lod_tgts_seq_next(struct seq_file *p, void *v, loff_t *pos,
bool is_mdt)
{
struct obd_device *obd = p->private;
struct lod_device *lod = lu2lod_dev(obd->obd_lu_dev);
struct lu_tgt_descs *ltd = is_mdt ? &lod->lod_mdt_descs :
&lod->lod_ost_descs;
(*pos)++;
if (*pos > ltd->ltd_tgts_size - 1)
return NULL;
*pos = find_next_bit(ltd->ltd_tgt_bitmap,
ltd->ltd_tgts_size, *pos);
if (*pos < ltd->ltd_tgts_size)
return LTD_TGT(ltd, *pos);
else
return NULL;
}
static void *lod_mdts_seq_next(struct seq_file *p, void *v, loff_t *pos)
{
return lod_tgts_seq_next(p, v, pos, true);
}
static void *lod_osts_seq_next(struct seq_file *p, void *v, loff_t *pos)
{
return lod_tgts_seq_next(p, v, pos, false);
}
/**
* lod_tgts_seq_show() - Show active/inactive status for OST found by
* lod_osts_seq_next().
* @p: seq file
* @v: unused for single entry
*
* Return:
* * %0 on success
* * %negative error code if failed
*/
static int lod_tgts_seq_show(struct seq_file *p, void *v)
{
struct obd_device *obd = p->private;
struct lu_tgt_desc *tgt = v;
struct dt_device *next;
int rc, active;
LASSERT(obd->obd_lu_dev);
next = tgt->ltd_tgt;
if (!next)
return -EINVAL;
/* XXX: should be non-NULL env, but it's very expensive */
active = 1;
rc = dt_statfs(NULL, next, &tgt->ltd_statfs);
if (rc == -ENOTCONN) {
active = 0;
rc = 0;
} else if (rc)
return rc;
seq_printf(p, "%d: %s %sACTIVE\n", tgt->ltd_index,
obd_uuid2str(&tgt->ltd_uuid),
active ? "" : "IN");
return 0;
}
static const struct seq_operations lod_mdts_sops = {
.start = lod_mdts_seq_start,
.stop = lod_mdts_seq_stop,
.next = lod_mdts_seq_next,
.show = lod_tgts_seq_show,
};
static const struct seq_operations lod_osts_sops = {
.start = lod_osts_seq_start,
.stop = lod_osts_seq_stop,
.next = lod_osts_seq_next,
.show = lod_tgts_seq_show,
};
static int lod_mdts_seq_open(struct inode *inode, struct file *file)
{
struct seq_file *seq;
int rc;
rc = seq_open(file, &lod_mdts_sops);
if (rc)
return rc;
seq = file->private_data;
seq->private = pde_data(inode);
return 0;
}
static int lod_osts_seq_open(struct inode *inode, struct file *file)
{
struct seq_file *seq;
int rc;
rc = seq_open(file, &lod_osts_sops);
if (rc)
return rc;
seq = file->private_data;
seq->private = inode->i_private;
return 0;
}
/* Show whether special failout mode for testing is enabled or not. */
static ssize_t lmv_failout_show(struct kobject *kobj, struct attribute *attr,
char *buf)
{
struct dt_device *dt = container_of(kobj, struct dt_device,
dd_kobj);
struct lod_device *lod = dt2lod_dev(dt);
return scnprintf(buf, PAGE_SIZE, "%d\n", lod->lod_lmv_failout ? 1 : 0);
}
/*
* Enable/disable a special failout mode for testing.
*
* This determines whether the LMV will try to continue processing a striped
* directory even if it has a (partly) corrupted entry in the master directory,
* or if it will abort upon finding a corrupted slave directory entry.
*/
static ssize_t lmv_failout_store(struct kobject *kobj, struct attribute *attr,
const char *buffer, size_t count)
{
struct dt_device *dt = container_of(kobj, struct dt_device,
dd_kobj);
struct lod_device *lod = dt2lod_dev(dt);
bool val = 0;
int rc;
rc = kstrtobool(buffer, &val);
if (rc)
return rc;
lod->lod_lmv_failout = val;
return count;
}
LUSTRE_RW_ATTR(lmv_failout);
static ssize_t mdt_hash_show(struct kobject *kobj, struct attribute *attr,
char *buf)
{
struct dt_device *dt = container_of(kobj, struct dt_device, dd_kobj);
struct lod_device *lod = dt2lod_dev(dt);
return scnprintf(buf, PAGE_SIZE, "%s\n",
mdt_hash_name[lod->lod_mdt_descs.ltd_lmv_desc.ld_pattern]);
}
static ssize_t mdt_hash_store(struct kobject *kobj, struct attribute *attr,
const char *buffer, size_t count)
{
struct dt_device *dt = container_of(kobj, struct dt_device, dd_kobj);
struct lod_device *lod = dt2lod_dev(dt);
char *hash;
int len;
int rc = -EINVAL;
int i;
hash = kstrndup(buffer, count, GFP_KERNEL);
if (!hash)
return -ENOMEM;
if (kstrtoint(hash, 10, &i) == 0 && lmv_is_known_hash_type(i)) {
lod->lod_mdt_descs.ltd_lmv_desc.ld_pattern = i;
GOTO(out, rc = count);
}
len = strcspn(hash, "\n ");
hash[len] = '\0';
for (i = LMV_HASH_TYPE_ALL_CHARS; i < ARRAY_SIZE(mdt_hash_name); i++) {
if (strcmp(hash, mdt_hash_name[i]) == 0) {
lod->lod_mdt_descs.ltd_lmv_desc.ld_pattern = i;
GOTO(out, rc = count);
}
}
out:
kfree(hash);
return rc;
}
LUSTRE_RW_ATTR(mdt_hash);
static ssize_t dist_txn_check_space_show(struct kobject *kobj,
struct attribute *attr,
char *buf)
{
struct dt_device *dt = container_of(kobj, struct dt_device,
dd_kobj);
struct lod_device *lod = dt2lod_dev(dt);
return scnprintf(buf, PAGE_SIZE, "%d\n", lod->lod_dist_txn_check_space);
}
static ssize_t dist_txn_check_space_store(struct kobject *kobj,
struct attribute *attr,
const char *buffer, size_t count)
{
struct dt_device *dt = container_of(kobj, struct dt_device,
dd_kobj);
struct lod_device *lod = dt2lod_dev(dt);
bool val = 0;
int rc;
rc = kstrtobool(buffer, &val);
if (rc)
return rc;
lod->lod_dist_txn_check_space = val;
return count;
}
LUSTRE_RW_ATTR(dist_txn_check_space);
static const struct proc_ops lod_proc_mdt_fops = {
PROC_OWNER(THIS_MODULE)
.proc_open = lod_mdts_seq_open,
.proc_read = seq_read,
.proc_lseek = seq_lseek,
.proc_release = seq_release,
};
static int lod_spill_threshold_pct_seq_show(struct seq_file *m, void *v)
{
struct lod_pool_desc *pool = m->private;
LASSERT(pool != NULL);
seq_printf(m, "%d\n", pool->pool_spill_threshold_pct);
return 0;
}
static ssize_t
lod_spill_threshold_pct_seq_write(struct file *file, const char __user *buffer,
size_t count, loff_t *off)
{
struct seq_file *m = file->private_data;
struct lod_pool_desc *pool = m->private;
int rc;
int val;
LASSERT(pool != NULL);
rc = kstrtoint_from_user(buffer, count, 0, &val);
if (rc)
return rc;
if (val > 100 || val < 0)
return -EINVAL;
pool->pool_spill_threshold_pct = val;
pool->pool_spill_expire = 0;
if (pool->pool_spill_threshold_pct == 0) {
pool->pool_spill_is_active = false;
pool->pool_spill_target[0] = '\0';
}
return count;
}
LPROC_SEQ_FOPS(lod_spill_threshold_pct);
static int lod_spill_target_seq_show(struct seq_file *m, void *v)
{
struct lod_pool_desc *pool = m->private;
LASSERT(pool != NULL);
seq_printf(m, "%s\n", pool->pool_spill_target);
return 0;
}
static DEFINE_MUTEX(lod_spill_loop_mutex);
static int lod_spill_check_loop(struct lod_device *lod,
const char *pool,
const char *destarg)
{
char dest[LOV_MAXPOOLNAME + 1];
struct lod_pool_desc *tgt;
int rc = 0;
strncpy(dest, destarg, sizeof(dest));
/*
* pool1 -> pool2 -> pool3 ++> pool1
* pool1 -> pool2 ++>pool3 -> pool1
*/
while (1) {
tgt = lod_pool_find(lod, dest);
if (!tgt) {
/* no more steps, we're fine */
break;
}
strncpy(dest, tgt->pool_spill_target, sizeof(dest));
lod_pool_putref(tgt);
if (strcmp(dest, pool) == 0) {
rc = -ELOOP;
break;
}
}
return rc;
}
static ssize_t
lod_spill_target_seq_write(struct file *file, const char __user *buffer,
size_t count, loff_t *off)
{
struct seq_file *m = file->private_data;
struct lod_pool_desc *pool = m->private;
struct lod_device *lod;
char tgt_name[LOV_MAXPOOLNAME + 1];
int rc;
LASSERT(pool != NULL);
lod = lu2lod_dev(pool->pool_lobd->obd_lu_dev);
if (count == 0) {
pool->pool_spill_target[0] = '\0';
pool->pool_spill_is_active = false;
return count;
}
if (count > sizeof(tgt_name) - 1)
return -E2BIG;
if (copy_from_user(tgt_name, buffer, count))
return -EFAULT;
tgt_name[count] = '\0';
if (strcmp(pool->pool_name, tgt_name) == 0)
return -ELOOP;
if (!lod_pool_exists(lod, tgt_name)) {
pool->pool_spill_target[0] = '\0';
pool->pool_spill_expire = 0;
return -ENODEV;
}
/* serialize all checks to protect against racing settings */
mutex_lock(&lod_spill_loop_mutex);
rc = lod_spill_check_loop(lod, pool->pool_name, tgt_name);
if (rc == 0) {
strncpy(pool->pool_spill_target, tgt_name,
sizeof(pool->pool_spill_target));
rc = count;
}
mutex_unlock(&lod_spill_loop_mutex);
return rc;
}
LPROC_SEQ_FOPS(lod_spill_target);
static int lod_spill_is_active_seq_show(struct seq_file *m, void *v)
{
struct lod_pool_desc *pool = m->private;
struct lod_device *lod;
struct lu_env env;
int rc;
if (!pool)
return -ENODEV;
rc = lu_env_init(&env, LCT_LOCAL);
if (rc)
return rc;
lod = lu2lod_dev(pool->pool_lobd->obd_lu_dev);
lod_spill_target_refresh(&env, lod, pool);
lu_env_fini(&env);
seq_printf(m, "%d\n", pool->pool_spill_is_active ? 1 : 0);
return 0;
}
LPROC_SEQ_FOPS_RO(lod_spill_is_active);
static int lod_spill_hit_seq_show(struct seq_file *m, void *v)
{
struct lod_pool_desc *pool = m->private;
LASSERT(pool != NULL);
seq_printf(m, "%d\n", atomic_read(&pool->pool_spill_hit));
return 0;
}
LPROC_SEQ_FOPS_RO(lod_spill_hit);
static int lod_spill_status_seq_show(struct seq_file *m, void *v)
{
struct lod_pool_desc *pool = m->private;
__u64 avail_bytes = 0, total_bytes = 0;
struct lu_tgt_pool *osts;
struct lod_device *lod;
struct lu_env env;
int rc, i;
if (!pool)
return -ENODEV;
rc = lu_env_init(&env, LCT_LOCAL);
if (rc)
return rc;
lod = lu2lod_dev(pool->pool_lobd->obd_lu_dev);
osts = &(pool->pool_obds);
for (i = 0; i < osts->op_count; i++) {
int idx = osts->op_array[i];
struct lod_tgt_desc *tgt;
struct obd_statfs *sfs;
if (!test_bit(idx, lod->lod_ost_bitmap))
continue;
tgt = OST_TGT(lod, idx);
if (tgt->ltd_active == 0)
continue;
sfs = &tgt->ltd_statfs;
avail_bytes += sfs->os_bavail * sfs->os_bsize;
total_bytes += sfs->os_blocks * sfs->os_bsize;
seq_printf(m, "%d: %llu %llu\n", idx,
avail_bytes >> 10, total_bytes >> 10);
}
seq_printf(m, "total: %llu\navail: %llu\nusage: %llu\nusage%%: %llu\n"
"active: %s\nthreshold: %dexpire: %d\n",
total_bytes >> 10, avail_bytes >> 10,
(total_bytes - avail_bytes) >> 10,
(total_bytes * pool->pool_spill_threshold_pct / 100) >> 10,
pool->pool_spill_is_active ? "on" : "off",
pool->pool_spill_threshold_pct,
(int)(pool->pool_spill_expire - ktime_get_seconds()));
lu_env_fini(&env);
return 0;
}
LPROC_SEQ_FOPS_RO(lod_spill_status);
struct lprocfs_vars lprocfs_lod_spill_vars[] = {
{ .name = "spill_threshold_pct",
.fops = &lod_spill_threshold_pct_fops },
{ .name = "spill_target",
.fops = &lod_spill_target_fops },
{ .name = "spill_is_active",
.fops = &lod_spill_is_active_fops },
{ .name = "spill_hit",
.fops = &lod_spill_hit_fops },
{ .name = "spill_status",
.fops = &lod_spill_status_fops },
{ NULL }
};
static const struct file_operations lod_debugfs_target_fops = {
.owner = THIS_MODULE,
.open = lod_osts_seq_open,
.read = seq_read,
.llseek = seq_lseek,
.release = seq_release,
};
static struct attribute *lod_attrs[] = {
&lustre_attr_dist_txn_check_space.attr,
&lustre_attr_dom_stripesize.attr,
&lustre_attr_dom_stripesize_max_kb.attr,
&lustre_attr_dom_stripesize_cur_kb.attr,
&lustre_attr_dom_threshold_free_mb.attr,
&lustre_attr_max_stripecount.attr,
&lustre_attr_max_mdt_stripecount.attr,
&lustre_attr_max_stripes_per_mdt.attr,
&lustre_attr_activeobd.attr,
&lustre_attr_desc_uuid.attr,
&lustre_attr_lmv_failout.attr,
&lustre_attr_numobd.attr,
&lustre_attr_qos_maxage.attr,
&lustre_attr_qos_prio_free.attr,
&lustre_attr_qos_threshold_rr.attr,
&lustre_attr_mdt_stripecount.attr,
&lustre_attr_mdt_stripetype.attr,
&lustre_attr_mdt_activeobd.attr,
&lustre_attr_mdt_numobd.attr,
&lustre_attr_mdt_qos_maxage.attr,
&lustre_attr_mdt_qos_prio_free.attr,
&lustre_attr_mdt_qos_threshold_rr.attr,
&lustre_attr_mdt_hash.attr,
&lustre_attr_mirror_count_max.attr,
&lustre_attr_stripecount.attr,
&lustre_attr_stripeoffset.attr,
&lustre_attr_stripesize.attr,
&lustre_attr_stripetype.attr,
NULL,
};
ATTRIBUTE_GROUPS(lod); /* creates lod_groups from lod_attrs */
int lod_tgt_weights_seq_show(struct seq_file *m, struct lod_device *lod,
struct lu_tgt_pool *tgts, bool is_mdt)
{
int i;
if (!tgts->op_count)
return 0;
down_read(&tgts->op_rw_sem);
for (i = 0; i < tgts->op_count; i++) {
u32 *op_array = tgts->op_array;
struct lod_tgt_desc *tgt = is_mdt ? MDT_TGT(lod, op_array[i]) :
OST_TGT(lod, op_array[i]);
struct lu_svr_qos *svr = tgt->ltd_qos.ltq_svr;
seq_printf(m, "- { %s: %d, tgt_weight: %llu, tgt_penalty: %llu, tgt_penalty_per_obj: %llu, tgt_avail: %llu, tgt_last_used: %llu, svr_nid: %s, svr_bavail: %llu, svr_iavail: %llu, svr_penalty: %llu, svr_penalty_per_obj: %llu, svr_last_used: %llu }\n",
is_mdt ? "mdt_idx" : "ost_idx", tgt->ltd_index,
tgt->ltd_qos.ltq_weight,
tgt->ltd_qos.ltq_penalty,
tgt->ltd_qos.ltq_penalty_per_obj,
tgt->ltd_qos.ltq_avail, tgt->ltd_qos.ltq_used,
svr->lsq_uuid.uuid, svr->lsq_bavail, svr->lsq_iavail,
svr->lsq_penalty, svr->lsq_penalty_per_obj,
svr->lsq_used);
}
up_read(&tgts->op_rw_sem);
return 0;
}
int lod_tgt_weights_seq_write(struct seq_file *m, const char __user *buf,
size_t count, struct lod_device *lod,
struct lu_tgt_pool *tgts, bool is_mdt)
{
int i;
if (!tgts->op_count)
return count;
down_read(&tgts->op_rw_sem);
down_write(&lod->lod_ost_descs.ltd_qos.lq_rw_sem);
for (i = 0; i < tgts->op_count; i++) {
u32 *op_array = tgts->op_array;
struct lod_tgt_desc *tgt = is_mdt ? MDT_TGT(lod, op_array[i]) :
OST_TGT(lod, op_array[i]);
tgt->ltd_qos.ltq_weight = 0;
tgt->ltd_qos.ltq_penalty = 0;
tgt->ltd_qos.ltq_svr->lsq_penalty = 0;
}
set_bit(LQ_DIRTY, &lod->lod_ost_descs.ltd_qos.lq_flags);
up_write(&lod->lod_ost_descs.ltd_qos.lq_rw_sem);
up_read(&tgts->op_rw_sem);
return count;
}
static int lod_mdt_weights_seq_show(struct seq_file *m, void *data)
{
struct lod_device *lod = m->private;
struct lu_tgt_pool *tgts = &lod->lod_mdt_descs.ltd_tgt_pool;
return lod_tgt_weights_seq_show(m, lod, tgts, true);
}
static ssize_t
lod_mdt_weights_seq_write(struct file *file, const char __user *buf,
size_t count, loff_t *off)
{
struct seq_file *m = file->private_data;
struct lod_device *lod = m->private;
struct lu_tgt_pool *tgts = &lod->lod_mdt_descs.ltd_tgt_pool;
return lod_tgt_weights_seq_write(m, buf, count, lod, tgts, true);
}
LDEBUGFS_SEQ_FOPS(lod_mdt_weights);
static int lod_ost_weights_seq_show(struct seq_file *m, void *data)
{
struct lod_device *lod = m->private;
struct lu_tgt_pool *tgts = &lod->lod_ost_descs.ltd_tgt_pool;
return lod_tgt_weights_seq_show(m, lod, tgts, false);
}
static ssize_t
lod_ost_weights_seq_write(struct file *file, const char __user *buf,
size_t count, loff_t *off)
{
struct seq_file *m = file->private_data;
struct lod_device *lod = m->private;
struct lu_tgt_pool *tgts = &lod->lod_ost_descs.ltd_tgt_pool;
return lod_tgt_weights_seq_write(m, buf, count, lod, tgts, false);
}
LDEBUGFS_SEQ_FOPS(lod_ost_weights);
static struct ldebugfs_vars ldebugfs_lod_vars[] = {
{ .name = "qos_mdt_weights",
.fops = &lod_mdt_weights_fops,
.proc_mode = 0444 },
{ .name = "qos_ost_weights",
.fops = &lod_ost_weights_fops,
.proc_mode = 0444 },
{ 0 }
};
/**
* lod_procfs_init() - Initialize procfs entries for LOD.
* @lod: LOD device
*
* Return:
* * %0 on success
* * %negative error code if failed
*/
int lod_procfs_init(struct lod_device *lod)
{
struct obd_device *obd = lod2obd(lod);
struct obd_type *type;
struct kobject *lov;
int rc;
lod->lod_dt_dev.dd_ktype.default_groups = lod_groups;
rc = dt_tunables_init(&lod->lod_dt_dev, obd->obd_type, obd->obd_name,
NULL);
if (rc) {
CERROR("%s: failed to setup DT tunables: %d\n",
obd->obd_name, rc);
RETURN(rc);
}
obd->obd_proc_entry = lprocfs_register(obd->obd_name,
obd->obd_type->typ_procroot,
NULL, obd);
if (IS_ERR(obd->obd_proc_entry)) {
rc = PTR_ERR(obd->obd_proc_entry);
CERROR("%s: error %d setting up lprocfs\n",
obd->obd_name, rc);
GOTO(out, rc);
}
rc = lprocfs_seq_create(obd->obd_proc_entry, "mdt_obd",
0444, &lod_proc_mdt_fops, obd);
if (rc) {
CWARN("%s: Error adding the target_obd file %d\n",
obd->obd_name, rc);
GOTO(out, rc);
}
lod->lod_pool_proc_entry = lprocfs_register("pools",
obd->obd_proc_entry,
NULL, NULL);
if (IS_ERR(lod->lod_pool_proc_entry)) {
rc = PTR_ERR(lod->lod_pool_proc_entry);
lod->lod_pool_proc_entry = NULL;
CWARN("%s: Failed to create pools proc file: %d\n",
obd->obd_name, rc);
GOTO(out, rc);
}
lod->lod_spill_proc_entry = lprocfs_register("pool",
obd->obd_proc_entry,
NULL, NULL);
if (IS_ERR(lod->lod_spill_proc_entry)) {
rc = PTR_ERR(lod->lod_spill_proc_entry);
lod->lod_spill_proc_entry = NULL;
CWARN("%s: Failed to create pool proc file: %d\n",
obd->obd_name, rc);
GOTO(out, rc);
}
lov = kset_find_obj(lustre_kset, "lov");
if (!lov) {
CERROR("%s: lov subsystem not found\n", obd->obd_name);
GOTO(out, rc = -ENODEV);
}
rc = sysfs_create_link(lov, &lod->lod_dt_dev.dd_kobj,
obd->obd_name);
if (rc)
CERROR("%s: failed to create LOV sysfs symlink\n",
obd->obd_name);
kobject_put(lov);
obd->obd_debugfs_entry = debugfs_create_dir(obd->obd_name,
obd->obd_type->typ_debugfs_entry);
ldebugfs_add_vars(obd->obd_debugfs_entry, ldebugfs_lod_vars, lod);
debugfs_create_file("target_obd", 0444, obd->obd_debugfs_entry,
obd, &lod_debugfs_target_fops);
lod->lod_debugfs = ldebugfs_add_symlink(obd->obd_name, "lov",
"../lod/%s", obd->obd_name);
if (!lod->lod_debugfs)
CERROR("%s: failed to create LOV debugfs symlink\n",
obd->obd_name);
lod->lod_pool_debugfs = debugfs_create_dir("pool",
obd->obd_debugfs_entry);
type = container_of(lov, struct obd_type, typ_kobj);
if (!type->typ_procroot)
RETURN(0);
/* for compatibility we link old procfs's LOV entries to lod ones */
lod->lod_symlink = lprocfs_add_symlink(obd->obd_name,
type->typ_procroot,
"../lod/%s", obd->obd_name);
if (lod->lod_symlink == NULL)
CERROR("cannot create LOV symlink for /proc/fs/lustre/lod/%s\n",
obd->obd_name);
RETURN(0);
out:
dt_tunables_fini(&lod->lod_dt_dev);
return rc;
}
/**
* lod_procfs_fini() - Cleanup procfs entries registred for LOD.
* @lod: LOD device
*/
void lod_procfs_fini(struct lod_device *lod)
{
struct obd_device *obd = lod2obd(lod);
struct kobject *lov;
if (lod->lod_symlink != NULL) {
lprocfs_remove(&lod->lod_symlink);
lod->lod_symlink = NULL;
}
lov = kset_find_obj(lustre_kset, "lov");
if (lov) {
sysfs_remove_link(lov, obd->obd_name);
kobject_put(lov);
}
debugfs_remove_recursive(lod->lod_pool_debugfs);
debugfs_remove_recursive(lod->lod_debugfs);
debugfs_remove_recursive(obd->obd_debugfs_entry);
if (obd->obd_proc_entry) {
lprocfs_remove(&obd->obd_proc_entry);
obd->obd_proc_entry = NULL;
}
dt_tunables_fini(&lod->lod_dt_dev);
}
#endif /* CONFIG_PROC_FS */
