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authorPranith Kumar K <pkarampu@redhat.com>2017-01-23 14:58:45 +0530
committerPranith Kumar Karampuri <pkarampu@redhat.com>2017-02-16 10:24:31 -0500
commit6588204568ab73bf8456ca3b2eccf2ae1182fb95 (patch)
treec36df3d8b6f23bba37620d1d6508c81f4389cbe5 /xlators/cluster/afr/src/afr-self-heal-entry.c
parent267578ec0d6b29483a1bd402165ea8c388ad825e (diff)
cluster/afr: Perform new entry mark before creating new entry
There is a chance for the source brick to go down just after the new entry is created and before source brick is marked with necessary pending markers. If after this any I/O happens then new entry will become source and reverse heal will happen. To prevent this mark the pending xattrs before creating the new entry. BUG: 1417466 Change-Id: I233b87e694d32e5d734df5a83b4d2ca711c17503 Signed-off-by: Pranith Kumar K <pkarampu@redhat.com> Reviewed-on: https://review.gluster.org/16474 Smoke: Gluster Build System <jenkins@build.gluster.org> NetBSD-regression: NetBSD Build System <jenkins@build.gluster.org> CentOS-regression: Gluster Build System <jenkins@build.gluster.org> Reviewed-by: Ravishankar N <ravishankar@redhat.com> Reviewed-by: Krutika Dhananjay <kdhananj@redhat.com>
Diffstat (limited to 'xlators/cluster/afr/src/afr-self-heal-entry.c')
-rw-r--r--xlators/cluster/afr/src/afr-self-heal-entry.c61
1 files changed, 24 insertions, 37 deletions
diff --git a/xlators/cluster/afr/src/afr-self-heal-entry.c b/xlators/cluster/afr/src/afr-self-heal-entry.c
index 08a45787027..413425ccad9 100644
--- a/xlators/cluster/afr/src/afr-self-heal-entry.c
+++ b/xlators/cluster/afr/src/afr-self-heal-entry.c
@@ -17,11 +17,6 @@
#include "syncop-utils.h"
#include "events.h"
-/* Max file name length is 255 this filename is of length 256. No file with
- * this name can ever come, entry-lock with this name is going to prevent
- * self-heals from older versions while the granular entry-self-heal is going
- * on in newer version.*/
-
static int
afr_selfheal_entry_delete (xlator_t *this, inode_t *dir, const char *name,
inode_t *inode, int child, struct afr_reply *replies)
@@ -71,26 +66,29 @@ afr_selfheal_entry_delete (xlator_t *this, inode_t *dir, const char *name,
int
-afr_selfheal_recreate_entry (xlator_t *this, int dst, int source, inode_t *dir,
+afr_selfheal_recreate_entry (call_frame_t *frame, int dst, int source,
+ unsigned char *sources, inode_t *dir,
const char *name, inode_t *inode,
- struct afr_reply *replies,
- unsigned char *newentry)
+ struct afr_reply *replies)
{
int ret = 0;
loc_t loc = {0,};
loc_t srcloc = {0,};
+ xlator_t *this = frame->this;
afr_private_t *priv = NULL;
dict_t *xdata = NULL;
struct iatt *iatt = NULL;
char *linkname = NULL;
mode_t mode = 0;
struct iatt newent = {0,};
- priv = this->private;
+ unsigned char *newentry = NULL;
+ priv = this->private;
xdata = dict_new();
if (!xdata)
return -ENOMEM;
+ newentry = alloca0 (priv->child_count);
loc.parent = inode_ref (dir);
gf_uuid_copy (loc.pargfid, dir->gfid);
loc.name = name;
@@ -109,6 +107,15 @@ afr_selfheal_recreate_entry (xlator_t *this, int dst, int source, inode_t *dir,
srcloc.inode = inode_ref (inode);
gf_uuid_copy (srcloc.gfid, iatt->ia_gfid);
+ if (iatt->ia_type != IA_IFDIR)
+ ret = syncop_lookup (priv->children[dst], &srcloc, 0, 0, 0, 0);
+ if (iatt->ia_type == IA_IFDIR || ret == -ENOENT || ret == -ESTALE) {
+ newentry[dst] = 1;
+ ret = afr_selfheal_newentry_mark (frame, this, inode, source,
+ replies, sources, newentry);
+ if (ret)
+ goto out;
+ }
mode = st_mode_from_ia (iatt->ia_prot, iatt->ia_type);
@@ -116,12 +123,9 @@ afr_selfheal_recreate_entry (xlator_t *this, int dst, int source, inode_t *dir,
case IA_IFDIR:
ret = syncop_mkdir (priv->children[dst], &loc, mode, 0,
xdata, NULL);
- if (ret == 0)
- newentry[dst] = 1;
break;
case IA_IFLNK:
- ret = syncop_lookup (priv->children[dst], &srcloc, 0, 0, 0, 0);
- if (ret == 0) {
+ if (!newentry[dst]) {
ret = syncop_link (priv->children[dst], &srcloc, &loc,
&newent, NULL, NULL);
} else {
@@ -131,8 +135,6 @@ afr_selfheal_recreate_entry (xlator_t *this, int dst, int source, inode_t *dir,
goto out;
ret = syncop_symlink (priv->children[dst], &loc,
linkname, NULL, xdata, NULL);
- if (ret == 0)
- newentry[dst] = 1;
}
break;
default:
@@ -142,10 +144,6 @@ afr_selfheal_recreate_entry (xlator_t *this, int dst, int source, inode_t *dir,
ret = syncop_mknod (priv->children[dst], &loc, mode,
makedev (ia_major(iatt->ia_rdev), ia_minor (iatt->ia_rdev)),
&newent, xdata, NULL);
- if (ret == 0 && newent.ia_nlink == 1) {
- /* New entry created. Mark @dst pending on all sources */
- newentry[dst] = 1;
- }
break;
}
@@ -168,12 +166,9 @@ __afr_selfheal_heal_dirent (call_frame_t *frame, xlator_t *this, fd_t *fd,
int ret = 0;
afr_private_t *priv = NULL;
int i = 0;
- unsigned char *newentry = NULL;
priv = this->private;
- newentry = alloca0 (priv->child_count);
-
if (!replies[source].valid)
return -EIO;
@@ -196,17 +191,15 @@ __afr_selfheal_heal_dirent (call_frame_t *frame, xlator_t *this, fd_t *fd,
replies[source].poststat.ia_gfid))
continue;
- ret = afr_selfheal_recreate_entry (this, i, source,
- fd->inode, name, inode,
- replies, newentry);
+ ret = afr_selfheal_recreate_entry (frame, i, source,
+ sources, fd->inode,
+ name, inode,
+ replies);
}
if (ret < 0)
break;
}
- if (AFR_COUNT (newentry, priv->child_count))
- afr_selfheal_newentry_mark (frame, this, inode, source, replies,
- sources, newentry);
return ret;
}
@@ -290,13 +283,10 @@ __afr_selfheal_merge_dirent (call_frame_t *frame, xlator_t *this, fd_t *fd,
int ret = 0;
int i = 0;
int source = -1;
- unsigned char *newentry = NULL;
afr_private_t *priv = NULL;
priv = this->private;
- newentry = alloca0 (priv->child_count);
-
for (i = 0; i < priv->child_count; i++) {
if (replies[i].valid && replies[i].op_ret == 0) {
source = i;
@@ -331,14 +321,11 @@ __afr_selfheal_merge_dirent (call_frame_t *frame, xlator_t *this, fd_t *fd,
if (replies[i].op_errno != ENOENT)
continue;
- ret = afr_selfheal_recreate_entry (this, i, source, fd->inode,
- name, inode, replies,
- newentry);
+ ret = afr_selfheal_recreate_entry (frame, i, source, sources,
+ fd->inode, name, inode,
+ replies);
}
- if (AFR_COUNT (newentry, priv->child_count))
- afr_selfheal_newentry_mark (frame, this, inode, source, replies,
- sources, newentry);
return ret;
}