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authorVijaykumar M <vmallika@redhat.com>2013-12-13 14:18:16 +0530
committerAnand Avati <avati@redhat.com>2014-02-02 23:10:38 -0800
commit3023a50c1410b4da457e86bed69c320760d37344 (patch)
tree7d8f1a89e1150155f7c840d56f9f160e4ad207e3 /xlators/cluster/dht
parent922134fdc08afb2810cb0205f26693d36db6fd4e (diff)
dht: do not remove linkfile if file exist in cached sub volume
Currently with rmdir, if a directory contains only the linkfiles we remove all the linkfiles and this is causing the problem when the cached sub volume is down and end-up with duplicate files showing on the mount point. Solution: Before removing a linkfile check if the files exists in cached subvolume. Change-Id: Iedffd0d9298ec8bb95d5ce27c341c9ade81f0d3c BUG: 1042725 Signed-off-by: Vijaykumar M <vmallika@redhat.com> Reviewed-on: http://review.gluster.org/6500 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Anand Avati <avati@redhat.com>
Diffstat (limited to 'xlators/cluster/dht')
-rw-r--r--xlators/cluster/dht/src/dht-common.c128
1 files changed, 109 insertions, 19 deletions
diff --git a/xlators/cluster/dht/src/dht-common.c b/xlators/cluster/dht/src/dht-common.c
index cf4ec258d..959afe873 100644
--- a/xlators/cluster/dht/src/dht-common.c
+++ b/xlators/cluster/dht/src/dht-common.c
@@ -4611,17 +4611,85 @@ err:
int
+dht_rmdir_cached_lookup_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
+ int op_ret, int op_errno, inode_t *inode,
+ struct iatt *stbuf, dict_t *xattr,
+ struct iatt *parent)
+{
+ dht_local_t *local = NULL;
+ xlator_t *src = NULL;
+ call_frame_t *main_frame = NULL;
+ dht_local_t *main_local = NULL;
+ int this_call_cnt = 0;
+ dht_conf_t *conf = this->private;
+ dict_t *xattrs = NULL;
+ int ret = 0;
+
+ local = frame->local;
+ src = local->hashed_subvol;
+
+ main_frame = local->main_frame;
+ main_local = main_frame->local;
+
+ if (op_ret == 0) {
+ main_local->op_ret = -1;
+ main_local->op_errno = ENOTEMPTY;
+
+ gf_log (this->name, GF_LOG_WARNING,
+ "%s found on cached subvol %s",
+ local->loc.path, src->name);
+ goto err;
+ } else if (op_errno != ENOENT) {
+ main_local->op_ret = -1;
+ main_local->op_errno = op_errno;
+ goto err;
+ }
+
+ xattrs = dict_new ();
+ if (!xattrs) {
+ gf_log (this->name, GF_LOG_ERROR, "dict_new failed");
+ goto err;
+ }
+
+ ret = dict_set_uint32 (xattrs, conf->link_xattr_name, 256);
+ if (ret) {
+ gf_log (this->name, GF_LOG_ERROR, "failed to set linkto key"
+ " in dict");
+ if (xattrs)
+ dict_unref (xattrs);
+ goto err;
+ }
+
+ STACK_WIND (frame, dht_rmdir_lookup_cbk,
+ src, src->fops->lookup, &local->loc, xattrs);
+ if (xattrs)
+ dict_unref (xattrs);
+
+ return 0;
+err:
+
+ this_call_cnt = dht_frame_return (main_frame);
+ if (is_last_call (this_call_cnt))
+ dht_rmdir_do (main_frame, this);
+
+ DHT_STACK_DESTROY (frame);
+ return 0;
+}
+
+
+int
dht_rmdir_is_subvol_empty (call_frame_t *frame, xlator_t *this,
gf_dirent_t *entries, xlator_t *src)
{
- int ret = 0;
- int build_ret = 0;
- gf_dirent_t *trav = NULL;
+ int ret = 0;
+ int build_ret = 0;
+ gf_dirent_t *trav = NULL;
call_frame_t *lookup_frame = NULL;
dht_local_t *lookup_local = NULL;
- dht_local_t *local = NULL;
- dict_t *xattrs = NULL;
- dht_conf_t *conf = this->private;
+ dht_local_t *local = NULL;
+ dict_t *xattrs = NULL;
+ dht_conf_t *conf = this->private;
+ xlator_t *subvol = NULL;
local = frame->local;
@@ -4681,6 +4749,7 @@ dht_rmdir_is_subvol_empty (call_frame_t *frame, xlator_t *this,
lookup_frame->local = lookup_local;
lookup_local->main_frame = frame;
+ lookup_local->hashed_subvol = src;
build_ret = dht_build_child_loc (this, &lookup_local->loc,
&local->loc, trav->d_name);
@@ -4699,9 +4768,20 @@ dht_rmdir_is_subvol_empty (call_frame_t *frame, xlator_t *this,
}
UNLOCK (&frame->lock);
- STACK_WIND (lookup_frame, dht_rmdir_lookup_cbk,
- src, src->fops->lookup,
- &lookup_local->loc, xattrs);
+ subvol = dht_linkfile_subvol (this, NULL, &trav->d_stat,
+ trav->dict);
+ if (!subvol) {
+ gf_log (this->name, GF_LOG_INFO,
+ "linkfile not having link subvolume. path=%s",
+ lookup_local->loc.path);
+ STACK_WIND (lookup_frame, dht_rmdir_lookup_cbk,
+ src, src->fops->lookup,
+ &lookup_local->loc, xattrs);
+ } else {
+ STACK_WIND (lookup_frame, dht_rmdir_cached_lookup_cbk,
+ subvol, subvol->fops->lookup,
+ &lookup_local->loc, xattrs);
+ }
ret++;
}
@@ -4767,16 +4847,18 @@ int
dht_rmdir_opendir_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
int op_ret, int op_errno, fd_t *fd, dict_t *xdata)
{
- dht_local_t *local = NULL;
+ dht_local_t *local = NULL;
int this_call_cnt = -1;
- call_frame_t *prev = NULL;
- dict_t *dict = NULL;
- int ret = 0;
- dht_conf_t *conf = this->private;
+ call_frame_t *prev = NULL;
+ dict_t *dict = NULL;
+ int ret = 0;
+ dht_conf_t *conf = this->private;
+ int i = 0;
local = frame->local;
prev = cookie;
+ this_call_cnt = dht_frame_return (frame);
if (op_ret == -1) {
gf_log (this->name, GF_LOG_DEBUG,
"opendir on %s for %s failed (%s)",
@@ -4789,6 +4871,12 @@ dht_rmdir_opendir_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
goto err;
}
+ if (!is_last_call (this_call_cnt))
+ return 0;
+
+ if (local->op_ret == -1)
+ goto err;
+
dict = dict_new ();
if (!dict) {
local->op_ret = -1;
@@ -4802,9 +4890,13 @@ dht_rmdir_opendir_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
"%s: failed to set '%s' key",
local->loc.path, conf->link_xattr_name);
- STACK_WIND (frame, dht_rmdir_readdirp_cbk,
- prev->this, prev->this->fops->readdirp,
- local->fd, 4096, 0, dict);
+ local->call_cnt = conf->subvolume_cnt;
+ for (i = 0; i < conf->subvolume_cnt; i++) {
+ STACK_WIND (frame, dht_rmdir_readdirp_cbk,
+ conf->subvolumes[i],
+ conf->subvolumes[i]->fops->readdirp,
+ local->fd, 4096, 0, dict);
+ }
if (dict)
dict_unref (dict);
@@ -4812,8 +4904,6 @@ dht_rmdir_opendir_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
return 0;
err:
- this_call_cnt = dht_frame_return (frame);
-
if (is_last_call (this_call_cnt)) {
dht_rmdir_do (frame, this);
}