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authorRavishankar N <ravishankar@redhat.com>2018-03-27 20:54:25 +0530
committerPranith Kumar Karampuri <pkarampu@redhat.com>2018-04-05 12:22:08 +0000
commitd9ceaf3203ffafb4bfe4693b47df1259abbd167a (patch)
tree5ffd896413561cdff85dee9b5041db13ca08a4ca /xlators/cluster/afr/src/afr-transaction.c
parentd70529701f09f89c7e4f578446d55de31497361d (diff)
afr: add quorum checks in pre-op
Problem: We seem to be winding the FOP if pre-op did not succeed on quorum bricks and then failing the FOP with EROFS since the fop did not meet quorum. This essentially masks the actual error due to which pre-op failed. (See BZ). Fix: Skip FOP phase if pre-op quorum is not met and go to post-op. Fixes: 1561129 Change-Id: Ie58a41e8fa1ad79aa06093706e96db8eef61b6d9 fixes: bz#1561129 Signed-off-by: Ravishankar N <ravishankar@redhat.com>
Diffstat (limited to 'xlators/cluster/afr/src/afr-transaction.c')
-rw-r--r--xlators/cluster/afr/src/afr-transaction.c64
1 files changed, 31 insertions, 33 deletions
diff --git a/xlators/cluster/afr/src/afr-transaction.c b/xlators/cluster/afr/src/afr-transaction.c
index ec72d46fb36..b5132a22d5b 100644
--- a/xlators/cluster/afr/src/afr-transaction.c
+++ b/xlators/cluster/afr/src/afr-transaction.c
@@ -144,6 +144,29 @@ afr_needs_changelog_update (afr_local_t *local)
return _gf_false;
}
+gf_boolean_t
+afr_changelog_has_quorum (afr_local_t *local, xlator_t *this)
+{
+ afr_private_t *priv = NULL;
+ int i = 0;
+ unsigned char *success_children = NULL;
+
+ priv = this->private;
+ success_children = alloca0 (priv->child_count);
+
+ for (i = 0; i < priv->child_count; i++) {
+ if (!local->transaction.failed_subvols[i]) {
+ success_children[i] = 1;
+ }
+ }
+
+ if (afr_has_quorum (success_children, this)) {
+ return _gf_true;
+ }
+
+ return _gf_false;
+}
+
int
afr_transaction_fop (call_frame_t *frame, xlator_t *this)
{
@@ -157,17 +180,16 @@ afr_transaction_fop (call_frame_t *frame, xlator_t *this)
priv = this->private;
failed_subvols = local->transaction.failed_subvols;
-
call_count = priv->child_count - AFR_COUNT (failed_subvols,
priv->child_count);
-
- if (call_count == 0) {
+ /* Fail if pre-op did not succeed on quorum no. of bricks. */
+ if (!afr_changelog_has_quorum (local, this) || !call_count) {
+ local->op_ret = -1;
+ /* local->op_errno is already captured in changelog cbk. */
afr_transaction_resume (frame, this);
return 0;
}
-
local->call_count = call_count;
-
for (i = 0; i < priv->child_count; i++) {
if (local->transaction.pre_op[i] && !failed_subvols[i]) {
local->transaction.wind (frame, this, i);
@@ -531,33 +553,6 @@ afr_set_pending_dict (afr_private_t *priv, dict_t *xattr, int **pending)
/* {{{ pending */
-
-void
-afr_handle_post_op_quorum (afr_local_t *local, xlator_t *this)
-{
- afr_private_t *priv = NULL;
- int i = 0;
- unsigned char *post_op_children = NULL;
-
- priv = this->private;
- post_op_children = alloca0 (priv->child_count);
-
- for (i = 0; i < priv->child_count; i++) {
- if (!local->transaction.failed_subvols[i]) {
- post_op_children[i] = 1;
- }
- }
-
- if (afr_has_quorum (post_op_children, this)) {
- return;
- }
-
- local->op_ret = -1;
- /*local->op_errno is already captured in post-op callback.*/
-
- return;
-}
-
int
afr_changelog_post_op_done (call_frame_t *frame, xlator_t *this)
{
@@ -568,7 +563,10 @@ afr_changelog_post_op_done (call_frame_t *frame, xlator_t *this)
int_lock = &local->internal_lock;
/* Fail the FOP if post-op did not succeed on quorum no. of bricks. */
- afr_handle_post_op_quorum (local, this);
+ if (!afr_changelog_has_quorum (local, this)) {
+ local->op_ret = -1;
+ /*local->op_errno is already captured in changelog cbk*/
+ }
if (local->transaction.resume_stub) {
call_resume (local->transaction.resume_stub);