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Hi, Yes, thanks very much for your quick response.
I attach the whole file, not very big. Br, Li Deqian From: Raghavendra Gowdappa <rgowdapp@xxxxxxxxxx>
On Wed, Jan 30, 2019 at 7:35 AM Li, Deqian (NSB - CN/Hangzhou) <deqian.li@xxxxxxxxxxxxxxx> wrote:
Can you paste the code of, * du_get_du_info * du_writev_resume
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#ifndef _CONFIG_H
#define _CONFIG_H
#include "config.h"
#endif
#include "glusterfs.h"
#include "xlator.h"
#include "defaults.h"
#include <sys/time.h>
#include "disk-usage.h"
#include "disk-usage-mem-types.h"
#include "statedump.h"
#include <unistd.h>
#define DOUBLE_ZERO 1e-10
#define IS_DOUBLE_ZERO(d) (abs(d) < DOUBLE_ZERO)
static gf_boolean_t
du_is_loc_filled (xlator_t *this)
{
du_conf_t *conf = NULL;
gf_boolean_t subvol_filled_inodes = _gf_false;
gf_boolean_t subvol_filled_space = _gf_false;
gf_boolean_t is_subvol_filled = _gf_false;
conf = this->private;
/* Check for values above specified percent or free disk */
LOCK (&conf->subvolume_lock);
{
if (conf->disk_unit == 'p')
{
if(conf->du_stats->avail_percent < 0)
{
gf_log (this->name, GF_LOG_TRACE,"subvol avail percent is initialized value");
}
else if(conf->du_stats->avail_percent <conf->min_free_disk)
{
subvol_filled_space = _gf_true;
}
}else
{
if(conf->du_stats->avail_space <0)
{
gf_log (this->name, GF_LOG_TRACE,"subvol inode avail percent is initialized value");
}
else if (conf->du_stats->avail_space <conf->min_free_disk)
{
subvol_filled_space = _gf_true;
}
}
if ((conf->du_stats->avail_inodes > 0.0f) && (conf->du_stats->avail_inodes <conf->min_free_inodes))
{
subvol_filled_inodes = _gf_true;
}
}
UNLOCK (&conf->subvolume_lock);
if (subvol_filled_space )
{
if (!(conf->du_stats->log++ % (GF_UNIVERSAL_ANSWER * 10)))
{
gf_log (this->name, GF_LOG_WARNING,
"disk space on subvolume is getting "
"full (%.2f %%), consider adding more nodes",
(100 - conf->du_stats->avail_percent));
}
}
if (subvol_filled_inodes )
{
if (!(conf->du_stats->log++ % (GF_UNIVERSAL_ANSWER * 10)))
{
gf_log (this->name, GF_LOG_CRITICAL,
"inodes on subvolume are at "
"(%.2f %%), consider adding more nodes",
(100 - conf->du_stats->avail_inodes));
}
}
is_subvol_filled = (subvol_filled_space || subvol_filled_inodes);
return is_subvol_filled;
}
static int du_update_stats( struct statvfs *statvfs,du_conf_t *conf)
{
double percent = 0;
double percent_inodes = 0;
uint64_t bytes = 0;
uint32_t bpc; /* blocks per chunk */
uint32_t chunks = 0;
if (statvfs && statvfs->f_blocks)
{
percent = (statvfs->f_bavail * 100) / statvfs->f_blocks;
bytes = (statvfs->f_bavail * statvfs->f_frsize);
/*
* A 32-bit count of 1MB chunks allows a maximum brick size of
* ~4PB. It's possible that we could see a single local FS
* bigger than that some day, but this code is likely to be
* irrelevant by then. Meanwhile, it's more important to keep
* the chunk size small so the layout-calculation code that
* uses this value can be tested on normal machines.
*/
bpc = (1 << 20) / statvfs->f_bsize;
chunks = (statvfs->f_blocks + bpc - 1) / bpc;
}
if (statvfs && statvfs->f_files)
{
percent_inodes = (statvfs->f_ffree * 100) / statvfs->f_files;
}
else
{
/*
* Set percent inodes to 100 for dynamically allocated inode
* filesystems. The rationale is that distribute need not
* worry about total inodes; rather, let the 'create()' be
* scheduled on the hashed subvol regardless of the total
* inodes.
*/
percent_inodes = 100;
}
LOCK (&conf->subvolume_lock);
{
conf->du_stats->avail_percent = percent;
conf->du_stats->avail_space = bytes;
conf->du_stats->avail_inodes = percent_inodes;
conf->du_stats->chunks = chunks;
gf_log ("du_update_stats", GF_LOG_TRACE,
"avail_percent "
"is: %.2f and avail_space "
"is: %" PRIu64" and avail_inodes"
" is: %.2f,",
conf->du_stats->avail_percent,
conf->du_stats->avail_space,
conf->du_stats->avail_inodes);
}
UNLOCK (&conf->subvolume_lock);
return 0;
}
static
gf_boolean_t is_refresh_interval_arrived(xlator_t *this,struct timeval tv)
{
du_conf_t *conf = this->private;
if(tv.tv_sec != conf->last_stat_fetch.tv_sec)
return _gf_true;
if( (tv.tv_sec == conf->last_stat_fetch.tv_sec) && (tv.tv_usec - conf->last_stat_fetch.tv_usec) > conf->refresh_interval)
return _gf_true;
return _gf_false;
}
static int
du_get_du_info (void * data)
{
int ret = -1;
du_conf_t *conf = NULL;
call_frame_t * frame = data;
du_local_t *local = NULL;
loc_t loc ={0,};
struct timeval tv = {0,};
loc_t tmp_loc = {0,};
xlator_t *this = THIS;
struct statvfs dst_statfs = {0,};
conf = this->private;
local = frame->local;
VALIDATE_OR_GOTO (frame, err);
VALIDATE_OR_GOTO (this, err);
VALIDATE_OR_GOTO (conf, err);
VALIDATE_OR_GOTO (local, err);
loc = local->loc;
/* make it root gfid, should be enough to get the proper info back */
tmp_loc.gfid[15] = 1;
tmp_loc.inode=loc.parent;
gettimeofday(&tv,NULL);
if ( is_refresh_interval_arrived(this,tv))
{
conf->last_stat_fetch.tv_sec = tv.tv_sec;
conf->last_stat_fetch.tv_usec = tv.tv_usec;
/* this is sync op which means when this function returns, statfs result is already in dst_statfs*/
ret = syncop_statfs (FIRST_CHILD(this), &tmp_loc, &dst_statfs,NULL,NULL);
if (ret) {
gf_log (this->name, GF_LOG_ERROR,
"failed to get statfs of %s on %s (%s)",
loc.path, this->name, strerror (-ret));
ret = -1;
goto err;
}
du_update_stats(&dst_statfs,conf);
}
return 0;
err:
gf_log (this->name, GF_LOG_WARNING, "failed to get disk usage info!");
return -1;
}
void
du_local_wipe (xlator_t *this, du_local_t *local)
{
if (!local)
return;
loc_wipe (&local->loc);
if (local->fd) {
fd_unref (local->fd);
local->fd = NULL;
}
if (local->params) {
dict_unref (local->params);
local->params = NULL;
}
GF_FREE (local->vector);
if (local->iobref)
iobref_unref (local->iobref);
if (local->xdata) {
dict_unref (local->xdata);
local->xdata = NULL;
}
mem_put (local);
}
du_local_t *
du_local_init (call_frame_t *frame, loc_t *loc, fd_t *fd, glusterfs_fop_t fop)
{
du_local_t *local = NULL;
inode_t *inode = NULL;
int ret = 0;
local = mem_get0 (THIS->local_pool);
if (!local)
{
gf_log ("disk-usage", GF_LOG_WARNING,"mem_get local failure!");
goto out;
}
if (loc)
{
ret = loc_copy (&local->loc, loc);
if (ret)
{
gf_log ("disk-usage", GF_LOG_WARNING,"loc_copy failure!");
goto out;
}
inode = loc->inode;
}
if (fd)
{
local->fd = fd_ref (fd);
if (!inode)
{
inode = fd->inode;
}
}
local->op_ret = -1;
local->op_errno = EUCLEAN;
local->fop = fop;
frame->local = local;
out:
if (ret) {
if (local)
mem_put (local);
local = NULL;
}
return local;
}
int du_change_statfs(xlator_t *this,struct statvfs *statvfs)
{
du_conf_t * conf = this->private;
double percent = 0;
uint64_t bytes = 0;
if (statvfs && statvfs->f_blocks)
{
percent = (statvfs->f_bavail * 100) / statvfs->f_blocks;
bytes = (statvfs->f_bavail * statvfs->f_frsize);
}
if (conf->disk_unit == 'p' )
{
if(conf->min_free_disk >= percent)
{
statvfs->f_bavail =0 ;
gf_log (this->name, GF_LOG_TRACE,"modify statfs result f_statvfs->f_bavail to zero");
}
}
else
{
if(conf->min_free_disk >=bytes)
{
statvfs->f_bavail =0;
gf_log (this->name, GF_LOG_TRACE,"modify statfs result f_statvfs->f_bavail to zero");
}
else
{
if(statvfs->f_bavail -(conf->min_free_disk/statvfs->f_frsize) > 0)
statvfs->f_bavail = statvfs->f_bavail -(conf->min_free_disk/statvfs->f_frsize) ;
else
statvfs->f_bavail = 0;
}
}
return 0;
}
static int
du_statfs_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
int op_ret, int op_errno, struct statvfs *statvfs,
dict_t *xdata)
{
du_change_statfs(this,statvfs);
DU_STACK_UNWIND(statfs, frame, op_ret, op_errno,
statvfs, xdata);
return 0;
}
int
du_statfs (call_frame_t *frame, xlator_t *this, loc_t *loc, dict_t *xdata)
{
int op_errno = -1;
du_local_t *local = NULL;
VALIDATE_OR_GOTO (frame, err);
VALIDATE_OR_GOTO (this, err);
VALIDATE_OR_GOTO (loc, err);
VALIDATE_OR_GOTO (this->private, err);
local = du_local_init (frame, loc, NULL, GF_FOP_STATFS);
if (!local) {
op_errno = ENOMEM;
gf_log (this->name, GF_LOG_WARNING,"allocation local failure ");
goto err;
}
STACK_WIND (frame, du_statfs_cbk,
FIRST_CHILD(this),
FIRST_CHILD(this)->fops->statfs,
loc, xdata);
return 0;
err:
op_errno = (op_errno == -1) ? errno : op_errno;
DU_STACK_UNWIND (statfs, frame, -1, op_errno, NULL, NULL);
return 0;
}
static int
du_mkdir_cbk (call_frame_t *frame, void *cookie,
xlator_t *this, int op_ret, int op_errno,
inode_t *inode, struct iatt *stbuf,
struct iatt *preparent, struct iatt *postparent,
dict_t *xdata)
{
if (op_ret != -1)
DU_STACK_UNWIND (mkdir, frame, op_ret, op_errno, inode, stbuf, preparent,
postparent, NULL);
else
DU_STACK_UNWIND (mkdir, frame, -1, op_errno, NULL, NULL, NULL,
NULL, NULL);
return 0;
}
int
du_mkdir_resume (int ret, call_frame_t *frame, void *opaque)
{
int op_errno = -1;
du_local_t *local = NULL;
loc_t loc ={0,};
xlator_t *this = NULL;
mode_t mode;
mode_t umask;
dict_t *params;
VALIDATE_OR_GOTO (frame, err);
this = frame->this;
VALIDATE_OR_GOTO (this, err);
local = frame->local;
VALIDATE_OR_GOTO (local, err);
loc = local->loc;
mode = local->mode;
umask= local->umask;
params=local->params;
if (!du_is_loc_filled (this))
{
STACK_WIND (frame, du_mkdir_cbk,
FIRST_CHILD(this),
FIRST_CHILD(this)->fops->mkdir,
&loc, mode, umask, params);
}
else
{
gf_log (this->name, GF_LOG_WARNING,"%s: disk space is full",loc.path);
op_errno=ENOSPC;
goto err;
}
return 0;
err:
op_errno = (op_errno == -1) ? errno : op_errno;
DU_STACK_UNWIND (mkdir, frame, -1, op_errno, NULL, NULL, NULL,
NULL, NULL);
return op_errno;
}
int
du_mkdir (call_frame_t *frame, xlator_t *this,
loc_t *loc, mode_t mode, mode_t umask, dict_t *params)
{
du_local_t *local = NULL;
int op_errno = -1;
int ret = -1;
VALIDATE_OR_GOTO (frame, err);
VALIDATE_OR_GOTO (this, err);
VALIDATE_OR_GOTO (loc, err);
VALIDATE_OR_GOTO (loc->inode, err);
VALIDATE_OR_GOTO (loc->path, err);
VALIDATE_OR_GOTO (this->private, err);
local = du_local_init (frame, loc, NULL, GF_FOP_MKDIR);
if (!local) {
op_errno = ENOMEM;
goto err;
}
local->mode = mode,
local->umask = umask;
local->params= dict_ref (params);
ret = synctask_new(this->ctx->env, du_get_du_info,du_mkdir_resume,frame,frame);
if(ret)
{
op_errno = -1;
gf_log (this->name, GF_LOG_WARNING,"synctask_new return failure ret(%d) ",ret);
goto err;
}
return 0;
err:
op_errno = (op_errno == -1) ? errno : op_errno;
DU_STACK_UNWIND (mkdir, frame, -1, op_errno, NULL, NULL, NULL,
NULL, NULL);
return op_errno;
}
static int
du_writev_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
int op_ret, int op_errno, struct iatt *prebuf,
struct iatt *postbuf, dict_t *xdata)
{
DU_STACK_UNWIND (writev, frame, op_ret, op_errno, prebuf, postbuf,
xdata);
return 0;
}
int
du_writev_resume (int ret, call_frame_t *frame, void *opaque)
{
int op_errno = -1;
du_local_t *local = NULL;
xlator_t *this = NULL;
fd_t *fd=NULL;
struct iovec *vector = NULL;
off_t off = 0;
uint32_t flags = 0;
struct iobref *iobref = NULL;
dict_t *xdata =NULL;
int count = 0;
VALIDATE_OR_GOTO (frame, err);
this = frame->this;
VALIDATE_OR_GOTO (this, err);
local = frame->local;
VALIDATE_OR_GOTO (local, err);
flags=local->flags;
fd = local->fd;
off = local->offset;
xdata = local->xdata;
iobref = local->iobref;
vector = local->vector;
count = local->count;
if (!du_is_loc_filled (this))
{
STACK_WIND (frame, du_writev_cbk,
FIRST_CHILD(this), FIRST_CHILD(this)->fops->writev,
fd, vector, count, off, flags, iobref, xdata);
}
else
{
gf_log (this->name, GF_LOG_WARNING," disk space is full");
op_errno=ENOSPC;
goto err;
}
return 0;
err:
op_errno = (op_errno == -1) ? errno : op_errno;
DU_STACK_UNWIND (writev, frame, -1, op_errno, NULL, NULL, NULL);
return op_errno;
}
int
du_writev (call_frame_t *frame, xlator_t *this, fd_t *fd,
struct iovec *vector, int count, off_t off, uint32_t flags,
struct iobref *iobref, dict_t *xdata)
{
int op_errno = -1;
int ret = -1;
du_local_t *local = NULL;
loc_t tmp_loc = {0,};
VALIDATE_OR_GOTO (frame, err);
VALIDATE_OR_GOTO (this, err);
VALIDATE_OR_GOTO (fd, err);
tmp_loc.gfid[15] = 1;
tmp_loc.inode = fd->inode;
tmp_loc.parent = fd->inode;
local = du_local_init (frame, &tmp_loc, fd, GF_FOP_WRITE);
if (!local) {
op_errno = ENOMEM;
goto err;
}
local->vector = iov_dup (vector, count);
local->offset = off;
local->count = count;
local->flags = flags;
local->iobref = iobref_ref (iobref);
ret = synctask_new(this->ctx->env, du_get_du_info,du_writev_resume,frame,frame);
if(ret)
{
op_errno = -1;
gf_log (this->name, GF_LOG_WARNING,"synctask_new return failure ret(%d) ",ret);
goto err;
}
return 0;
err:
op_errno = (op_errno == -1) ? errno : op_errno;
DU_STACK_UNWIND (writev, frame, -1, op_errno, NULL, NULL, NULL);
return 0;
}
static int
du_create_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
int op_ret, int op_errno,
fd_t *fd, inode_t *inode, struct iatt *stbuf,
struct iatt *preparent, struct iatt *postparent, dict_t *xdata)
{
DU_STACK_UNWIND(create, frame, op_ret, op_errno, fd, inode, stbuf, preparent,
postparent, xdata);
return 0;
}
int
du_create_resume (int ret, call_frame_t *frame, void *opaque)
{
int op_errno = -1;
du_local_t *local = NULL;
loc_t loc ={0,};
xlator_t *this = NULL;
int32_t flags;
mode_t mode;
mode_t umask;
fd_t *fd=NULL;
dict_t *params;
VALIDATE_OR_GOTO (frame, err);
this = frame->this;
VALIDATE_OR_GOTO (this, err);
local = frame->local;
VALIDATE_OR_GOTO (local, err);
loc = local->loc;
flags=local->flags;
mode = local->mode;
umask= local->umask;
fd = local->fd;
params=local->params;
if (!du_is_loc_filled (this))
{
STACK_WIND (frame, du_create_cbk,
FIRST_CHILD(this), FIRST_CHILD(this)->fops->create,
&loc, flags, mode, umask, fd, params);
}
else
{
gf_log (this->name, GF_LOG_WARNING,"%s: disk space is full",loc.path);
op_errno=ENOSPC;
goto err;
}
return 0;
err:
op_errno = (op_errno == -1) ? errno : op_errno;
DU_STACK_UNWIND (create, frame, -1, op_errno, NULL, NULL, NULL,
NULL, NULL, NULL);
return op_errno;
}
int
du_create (call_frame_t *frame, xlator_t *this,
loc_t *loc, int32_t flags, mode_t mode,
mode_t umask, fd_t *fd, dict_t *params)
{
int op_errno = -1;
du_local_t *local = NULL;
int ret = -1;
VALIDATE_OR_GOTO (frame, err);
VALIDATE_OR_GOTO (this, err);
VALIDATE_OR_GOTO (loc, err);
local = du_local_init (frame, loc, fd, GF_FOP_CREATE);
if (!local) {
op_errno = ENOMEM;
gf_log (this->name, GF_LOG_WARNING,"allocation local failure ");
goto err;
}
local->flags = flags;
local->mode = mode,
local->umask = umask;
local->params= dict_ref (params);
ret = synctask_new(this->ctx->env, du_get_du_info,du_create_resume,frame,frame);
if(ret)
{
op_errno = -1;
gf_log (this->name, GF_LOG_WARNING,"create synctask return failure ret(%d) ",ret);
goto err;
}
return 0;
err:
op_errno = (op_errno == -1) ? errno : op_errno;
DU_STACK_UNWIND (create, frame, -1, op_errno, NULL, NULL, NULL,
NULL, NULL, NULL);
return op_errno;
}
int
reconfigure (xlator_t *this, dict_t *options)
{
du_conf_t *conf = NULL;
GF_VALIDATE_OR_GOTO ("du", this, out);
GF_VALIDATE_OR_GOTO ("du", options, out);
gf_log (this->name, GF_LOG_TRACE,"reconfigure disk usage parameters!");
conf = this->private;
if (!conf)
return 0;
GF_OPTION_RECONF ("min-free-disk", conf->min_free_disk, options,
percent_or_size, out);
/* option can be any one of percent or bytes */
conf->disk_unit = 0;
if (conf->min_free_disk < 100.0)
conf->disk_unit = 'p';
GF_OPTION_RECONF ("min-free-inodes", conf->min_free_inodes, options,
percent, out);
out:
return 0;
}
int32_t
mem_acct_init (xlator_t *this)
{
int ret = -1;
GF_VALIDATE_OR_GOTO ("du", this, out);
ret = xlator_mem_acct_init (this, gf_du_mt_end + 1);
if (ret != 0) {
gf_log (this->name, GF_LOG_ERROR, "Memory accounting init"
"failed");
return ret;
}
out:
return ret;
}
int
init(xlator_t * this)
{
du_conf_t *conf = NULL;
GF_VALIDATE_OR_GOTO ("du", this, err);
if (!this->children) {
gf_log(this->name, GF_LOG_CRITICAL,
"DiskUsage needs more than one subvolume");
return -1;
}
if (!this->parents)
{
gf_log(this->name, GF_LOG_WARNING,
"dangling volume. check volfile");
}
conf = GF_CALLOC (1, sizeof (*conf),gf_du_mt_du_conf_t);
if (!conf)
{
gf_log(this->name, GF_LOG_WARNING,
"du_conf allocation failure!");
goto err;
}
this->local_pool = mem_pool_new (du_local_t, 512);
if (!this->local_pool) {
gf_log(this->name, GF_LOG_ERROR,
" DU initialisation failed. "
"failed to create local_t's memory pool");
goto err;
}
GF_OPTION_INIT ("min-free-disk", conf->min_free_disk, percent_or_size,err);
/* option can be any one of percent or bytes */
conf->disk_unit = 0;
if (conf->min_free_disk < 100)
conf->disk_unit = 'p';
conf->refresh_interval = 300000;
conf->du_stats = GF_CALLOC (1, sizeof (du_info_t), gf_du_mt_du_stat_t);
if (!conf->du_stats) {
gf_log(this->name, GF_LOG_WARNING,
"du_sats allocation failure!");
goto err;
}
conf->du_stats->avail_percent = -1.0f;
conf->du_stats->avail_inodes = -1.0f;
GF_OPTION_INIT ("min-free-inodes", conf->min_free_inodes, percent, err);
LOCK_INIT (&conf->subvolume_lock);
this->private = conf;
return 0;
err:
if (conf)
{
GF_FREE (conf->du_stats);
GF_FREE (conf);
}
return -1;
}
int32_t
du_priv_dump (xlator_t *this)
{
char key_prefix[GF_DUMP_MAX_BUF_LEN];
char key[GF_DUMP_MAX_BUF_LEN];
du_conf_t *conf = NULL;
int ret = -1;
if (!this)
goto out;
conf = this->private;
if (!conf)
goto out;
ret = TRY_LOCK(&conf->subvolume_lock);
if (ret != 0) {
return ret;
}
gf_proc_dump_add_section("xlator.performance.%s.priv", this->name);
gf_proc_dump_build_key(key_prefix,"xlator.performance.disk-usage","%s.priv",this->name);
gf_proc_dump_write("gen", "%d", conf->gen);
gf_proc_dump_write("min_free_disk", "%lf", conf->min_free_disk);
gf_proc_dump_write("min_free_inodes", "%lf", conf->min_free_inodes);
gf_proc_dump_write("disk_unit", "%c", conf->disk_unit);
gf_proc_dump_write("refresh_interval", "%d", conf->refresh_interval);
if (conf->du_stats)
{
snprintf (key, sizeof (key),"du_stats.avail_percent");
gf_proc_dump_write (key, "%lf",conf->du_stats->avail_percent);
snprintf (key, sizeof (key), "du_stats.avail_space");
gf_proc_dump_write (key, "%lu",conf->du_stats->avail_space);
snprintf (key, sizeof (key),"du_stats.avail_inodes");
gf_proc_dump_write (key, "%lf",conf->du_stats->avail_inodes);
snprintf (key, sizeof (key), "du_stats.log");
gf_proc_dump_write (key, "%lu",conf->du_stats->log);
}
if (conf->last_stat_fetch.tv_sec)
gf_proc_dump_write("last_stat_fetch", "%s",ctime(&conf->last_stat_fetch.tv_sec));
UNLOCK(&conf->subvolume_lock);
out:
return ret;
}
void
fini (xlator_t *this)
{
du_conf_t *conf = NULL;
GF_VALIDATE_OR_GOTO ("du", this, out);
conf = this->private;
this->private = NULL;
if (conf)
{
GF_FREE (conf->du_stats);
GF_FREE (conf);
}
out:
return;
}
struct xlator_fops fops = {
.create = du_create,
.mkdir = du_mkdir,
.writev = du_writev,
.statfs = du_statfs,
};
struct xlator_cbks cbks = {
};
struct xlator_dumpops dumpops = {
.priv = du_priv_dump
};
struct volume_options options[] = {
{ .key = {"min-free-disk"},
.type = GF_OPTION_TYPE_PERCENT_OR_SIZET,
.default_value = "104857600",
.description = "Percentage/Size of disk space, after which the "
"glusterfs will refuse to create/mkdir/write to the volume, and logs will appear "
"in log files",
},
{ .key = {"min-free-inodes"},
.type = GF_OPTION_TYPE_PERCENT,
.default_value = "5%",
.description = "after system has only N% of inodes, warnings "
"starts to appear in log files",
},
{ .key = {NULL} },
};
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