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authorshishir gowda <shishirng@gluster.com>2012-02-16 14:47:27 +0530
committerVijay Bellur <vijay@gluster.com>2012-02-19 04:46:26 -0800
commit6123265556e54891369cc79a72b670a4b23a8a41 (patch)
tree679e4f00da3a1263a257991a967d5489d7089317
parentbe0fdd8363fd3683c782d9fef86a1b9ffb38983a (diff)
cluster/dht: Handle get cached/hashed subvol failures gracefully
Change-Id: I7a41c2876be04acd166b2004d9aa66af078d32ea BUG: 790328 Signed-off-by: shishir gowda <shishirng@gluster.com> Reviewed-on: http://review.gluster.com/2757 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Amar Tumballi <amarts@redhat.com>
-rw-r--r--xlators/cluster/dht/src/dht-common.c39
-rw-r--r--xlators/cluster/dht/src/dht-common.h2
-rw-r--r--xlators/cluster/dht/src/dht-helper.c10
3 files changed, 47 insertions, 4 deletions
diff --git a/xlators/cluster/dht/src/dht-common.c b/xlators/cluster/dht/src/dht-common.c
index d55750dde8d..f76dba40fcf 100644
--- a/xlators/cluster/dht/src/dht-common.c
+++ b/xlators/cluster/dht/src/dht-common.c
@@ -1333,8 +1333,16 @@ dht_lookup (call_frame_t *frame, xlator_t *this,
return 0;
}
- if (!hashed_subvol)
+ if (!hashed_subvol) {
hashed_subvol = dht_subvol_get_hashed (this, loc);
+ if (!hashed_subvol) {
+ gf_log (this->name, GF_LOG_ERROR,
+ "Failed to get hashed subvol for %s",
+ loc->path);
+ op_errno = EINVAL;
+ goto err;
+ }
+ }
local->hashed_subvol = hashed_subvol;
if (is_revalidate (loc)) {
@@ -1846,6 +1854,14 @@ dht_getxattr (call_frame_t *frame, xlator_t *this,
if (key && (strcmp (key, GF_XATTR_PATHINFO_KEY) == 0)) {
hashed_subvol = dht_subvol_get_hashed (this, loc);
+ if (!hashed_subvol) {
+ gf_log (this->name, GF_LOG_ERROR,
+ "Failed to get hashed_subvol for %s",
+ loc->path);
+ op_errno = EINVAL;
+ goto err;
+ }
+
cached_subvol = local->cached_subvol;
local->call_cnt = 1;
@@ -1861,7 +1877,21 @@ dht_getxattr (call_frame_t *frame, xlator_t *this,
}
if (key && (strcmp (key, GF_XATTR_LINKINFO_KEY) == 0)) {
hashed_subvol = dht_subvol_get_hashed (this, loc);
+ if (!hashed_subvol) {
+ gf_log (this->name, GF_LOG_ERROR, "Failed to get"
+ "hashed subvol for %s", loc->path);
+ op_errno = EINVAL;
+ goto err;
+ }
+
cached_subvol = dht_subvol_get_cached (this, loc->inode);
+ if (!cached_subvol) {
+ gf_log (this->name, GF_LOG_ERROR, "Failed to get"
+ "cached subvol for %s", loc->path);
+ op_errno = EINVAL;
+ goto err;
+ }
+
if (hashed_subvol == cached_subvol) {
op_errno = ENODATA;
goto err;
@@ -2187,6 +2217,13 @@ dht_setxattr (call_frame_t *frame, xlator_t *this,
forced_rebalance = 1;
local->rebalance.target_node = dht_subvol_get_hashed (this, loc);
+ if (!local->rebalance.target_node) {
+ gf_log (this->name, GF_LOG_ERROR, "Failed to get "
+ "hashed subvol for %s", loc->path);
+ op_errno = EINVAL;
+ goto err;
+ }
+
local->rebalance.from_subvol = local->cached_subvol;
if (local->rebalance.target_node == local->rebalance.from_subvol) {
diff --git a/xlators/cluster/dht/src/dht-common.h b/xlators/cluster/dht/src/dht-common.h
index d97ef9f5853..e44c947ddf2 100644
--- a/xlators/cluster/dht/src/dht-common.h
+++ b/xlators/cluster/dht/src/dht-common.h
@@ -265,8 +265,6 @@ typedef struct dht_disk_layout dht_disk_layout_t;
#define ENTRY_MISSING(op_ret, op_errno) (op_ret == -1 && op_errno == ENOENT)
-#define is_fs_root(loc) (strcmp (loc->path, "/") == 0)
-
#define is_revalidate(loc) (inode_ctx_get (loc->inode, this, NULL) == 0)
#define is_last_call(cnt) (cnt == 0)
diff --git a/xlators/cluster/dht/src/dht-helper.c b/xlators/cluster/dht/src/dht-helper.c
index 80de4d73802..dea69dd9fd5 100644
--- a/xlators/cluster/dht/src/dht-helper.c
+++ b/xlators/cluster/dht/src/dht-helper.c
@@ -358,11 +358,17 @@ dht_subvol_get_hashed (xlator_t *this, loc_t *loc)
dht_layout_t *layout = NULL;
xlator_t *subvol = NULL;
- if (is_fs_root (loc)) {
+ GF_VALIDATE_OR_GOTO ("dht", this, out);
+ GF_VALIDATE_OR_GOTO (this->name, loc, out);
+
+ if (__is_root_gfid (loc->gfid)) {
subvol = dht_first_up_subvol (this);
goto out;
}
+ GF_VALIDATE_OR_GOTO (this->name, loc->parent, out);
+ GF_VALIDATE_OR_GOTO (this->name, loc->name, out);
+
layout = dht_layout_get (this, loc->parent);
if (!layout) {
@@ -396,6 +402,8 @@ dht_subvol_get_cached (xlator_t *this, inode_t *inode)
dht_layout_t *layout = NULL;
xlator_t *subvol = NULL;
+ GF_VALIDATE_OR_GOTO (this->name, this, out);
+ GF_VALIDATE_OR_GOTO (this->name, inode, out);
layout = dht_layout_get (this, inode);