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authorAmar Tumballi <amar@gluster.com>2009-04-02 19:45:04 -0700
committerAnand V. Avati <avati@amp.gluster.com>2009-04-06 22:22:04 +0530
commitc7962678224374fa295d4063c2f5387c7280536e (patch)
treeb915ede4d6ac96d0133f1ad9e480d543aef29dea /xlators/cluster/dht/src/nufa.c
parent258fec70ba2cc588f500f3e3bc16c99af212b4c9 (diff)
nufa to take care of free disk-space while creating files.
nufa gets awareness about the available free-disk-space in subvolumes. Signed-off-by: Anand V. Avati <avati@amp.gluster.com>
Diffstat (limited to 'xlators/cluster/dht/src/nufa.c')
-rw-r--r--xlators/cluster/dht/src/nufa.c106
1 files changed, 74 insertions, 32 deletions
diff --git a/xlators/cluster/dht/src/nufa.c b/xlators/cluster/dht/src/nufa.c
index 659a4acd5..57ac6b027 100644
--- a/xlators/cluster/dht/src/nufa.c
+++ b/xlators/cluster/dht/src/nufa.c
@@ -282,7 +282,7 @@ nufa_create_linkfile_create_cbk (call_frame_t *frame, void *cookie,
goto err;
STACK_WIND (frame, dht_create_cbk,
- conf->local_volume, conf->local_volume->fops->create,
+ local->cached_subvol, local->cached_subvol->fops->create,
&local->loc, local->flags, local->mode, local->fd);
return 0;
@@ -299,6 +299,7 @@ nufa_create (call_frame_t *frame, xlator_t *this,
dht_local_t *local = NULL;
dht_conf_t *conf = NULL;
xlator_t *subvol = NULL;
+ xlator_t *avail_subvol = NULL;
int op_errno = -1;
int ret = -1;
@@ -308,6 +309,8 @@ nufa_create (call_frame_t *frame, xlator_t *this,
conf = this->private;
+ dht_get_du_info (frame, this, loc);
+
local = dht_local_init (frame);
if (!local) {
op_errno = ENOMEM;
@@ -325,33 +328,42 @@ nufa_create (call_frame_t *frame, xlator_t *this,
goto err;
}
- if (subvol != conf->local_volume) {
- /* create a link file instead of actual file */
- ret = loc_copy (&local->loc, loc);
- if (ret == -1) {
- gf_log (this->name, GF_LOG_ERROR,
- "memory allocation failed :(");
- op_errno = ENOMEM;
- goto err;
- }
-
- local->fd = fd_ref (fd);
- local->mode = mode;
- local->flags = flags;
-
- dht_linkfile_create (frame, nufa_create_linkfile_create_cbk,
- conf->local_volume, subvol, loc);
- return 0;
- }
-
- gf_log (this->name, GF_LOG_DEBUG,
- "creating %s on %s", loc->path, subvol->name);
-
- STACK_WIND (frame, dht_create_cbk,
- subvol, subvol->fops->create,
- loc, flags, mode, fd);
+ avail_subvol = conf->local_volume;
+ if (dht_is_subvol_filled (this, conf->local_volume)) {
+ avail_subvol =
+ dht_free_disk_available_subvol (this,
+ conf->local_volume);
+ }
+
+ if (subvol != avail_subvol) {
+ /* create a link file instead of actual file */
+ ret = loc_copy (&local->loc, loc);
+ if (ret == -1) {
+ gf_log (this->name, GF_LOG_ERROR,
+ "memory allocation failed :(");
+ op_errno = ENOMEM;
+ goto err;
+ }
+
+ local->fd = fd_ref (fd);
+ local->mode = mode;
+ local->flags = flags;
+
+ local->cached_subvol = avail_subvol;
+ dht_linkfile_create (frame,
+ nufa_create_linkfile_create_cbk,
+ avail_subvol, subvol, loc);
+ return 0;
+ }
- return 0;
+ gf_log (this->name, GF_LOG_DEBUG,
+ "creating %s on %s", loc->path, subvol->name);
+
+ STACK_WIND (frame, dht_create_cbk,
+ subvol, subvol->fops->create,
+ loc, flags, mode, fd);
+
+ return 0;
err:
op_errno = (op_errno == -1) ? errno : op_errno;
@@ -375,8 +387,8 @@ nufa_mknod_linkfile_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
if (op_ret >= 0) {
STACK_WIND (frame, dht_newfile_cbk,
- conf->local_volume,
- conf->local_volume->fops->mknod,
+ local->cached_subvol,
+ local->cached_subvol->fops->mknod,
&local->loc, local->mode, local->rdev);
return 0;
@@ -394,6 +406,7 @@ nufa_mknod (call_frame_t *frame, xlator_t *this,
dht_local_t *local = NULL;
dht_conf_t *conf = NULL;
xlator_t *subvol = NULL;
+ xlator_t *avail_subvol = NULL;
int op_errno = -1;
int ret = -1;
@@ -403,6 +416,7 @@ nufa_mknod (call_frame_t *frame, xlator_t *this,
conf = this->private;
+ dht_get_du_info (frame, this, loc);
local = dht_local_init (frame);
if (!local) {
@@ -421,8 +435,15 @@ nufa_mknod (call_frame_t *frame, xlator_t *this,
goto err;
}
+ /* Consider the disksize in consideration */
+ avail_subvol = conf->local_volume;
+ if (dht_is_subvol_filled (this, conf->local_volume)) {
+ avail_subvol =
+ dht_free_disk_available_subvol (this,
+ conf->local_volume);
+ }
- if (conf->local_volume != subvol) {
+ if (avail_subvol != subvol) {
/* Create linkfile first */
ret = loc_copy (&local->loc, loc);
if (ret == -1) {
@@ -434,9 +455,10 @@ nufa_mknod (call_frame_t *frame, xlator_t *this,
local->mode = mode;
local->rdev = rdev;
-
+ local->cached_subvol = avail_subvol;
+
dht_linkfile_create (frame, nufa_mknod_linkfile_cbk,
- conf->local_volume, subvol, loc);
+ avail_subvol, subvol, loc);
return 0;
}
@@ -584,6 +606,20 @@ init (xlator_t *this)
/* The volume specified exists */
conf->local_volume = trav->xlator;
+ conf->min_free_disk = 10;
+
+ data = dict_get (this->options, "min-free-disk");
+ if (data) {
+ gf_string2percent (data->data, &conf->min_free_disk);
+ }
+
+ conf->du_stats = CALLOC (conf->subvolume_cnt, sizeof (dht_du_t));
+ if (!conf->du_stats) {
+ gf_log (this->name, GF_LOG_ERROR,
+ "memory allocation failed :(");
+ goto err;
+ }
+
this->private = conf;
return 0;
@@ -606,6 +642,9 @@ err:
if (conf->subvolume_status)
FREE (conf->subvolume_status);
+ if (conf->du_stats)
+ FREE (conf->du_stats);
+
FREE (conf);
}
@@ -680,5 +719,8 @@ struct volume_options options[] = {
{ .key = {"lookup-unhashed"},
.type = GF_OPTION_TYPE_BOOL
},
+ { .key = {"min-free-disk"},
+ .type = GF_OPTION_TYPE_PERCENT
+ },
{ .key = {NULL} },
};