diff options
author | Pranith Kumar K <pkarampu@redhat.com> | 2015-06-07 10:24:08 +0530 |
---|---|---|
committer | Pranith Kumar Karampuri <pkarampu@redhat.com> | 2015-06-18 05:47:15 -0700 |
commit | 56becf03ffd0ddfae4fda4d064a1c91cf1eb57a6 (patch) | |
tree | 3057fa0243e34db9158edc71066df28e9d2f4be9 /xlators/cluster/ec | |
parent | 6eb24012e43dccda5fb71374ffd607d913fb2d59 (diff) |
cluster/ec: Prevent double unwind
Backport of http://review.gluster.com/11111
Problem:
1) ec_access/ec_readlink_/ec_readdir[p] _cbks are trying to recover only from
ENOTCONN.
2) When the fop succeeds it unwinds right away. But when its
ec_fop_manager resumes, if the number of bricks that are up is less than
ec->fragments, the the state machine will resume with -EC_STATE_REPORT which
unwinds again. This will lead to crashes.
Fix:
- If fop fails retry on other subvols, as ESTALE/ENOENT/EBADFD etc are also
recoverable.
- unwind success/failure in _cbks
BUG: 1229331
Change-Id: I7510984a237761efba65e872313a8ede8b7543e5
Signed-off-by: Pranith Kumar K <pkarampu@redhat.com>
Reviewed-on: http://review.gluster.org/11128
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Tested-by: NetBSD Build System <jenkins@build.gluster.org>
Reviewed-by: Xavier Hernandez <xhernandez@datalab.es>
Diffstat (limited to 'xlators/cluster/ec')
-rw-r--r-- | xlators/cluster/ec/src/ec-common.c | 6 | ||||
-rw-r--r-- | xlators/cluster/ec/src/ec-common.h | 3 | ||||
-rw-r--r-- | xlators/cluster/ec/src/ec-dir-read.c | 8 | ||||
-rw-r--r-- | xlators/cluster/ec/src/ec-inode-read.c | 8 |
4 files changed, 12 insertions, 13 deletions
diff --git a/xlators/cluster/ec/src/ec-common.c b/xlators/cluster/ec/src/ec-common.c index 05dd386ec65..c2c48c3c3f8 100644 --- a/xlators/cluster/ec/src/ec-common.c +++ b/xlators/cluster/ec/src/ec-common.c @@ -535,11 +535,9 @@ void ec_dispatch_one(ec_fop_data_t * fop) } } -int32_t ec_dispatch_one_retry(ec_fop_data_t * fop, int32_t idx, int32_t op_ret, - int32_t op_errno) +int32_t ec_dispatch_one_retry(ec_fop_data_t *fop, int32_t idx, int32_t op_ret) { - if ((op_ret < 0) && (op_errno == ENOTCONN)) - { + if (op_ret < 0) { return (ec_dispatch_next(fop, idx) >= 0); } diff --git a/xlators/cluster/ec/src/ec-common.h b/xlators/cluster/ec/src/ec-common.h index c0db0218699..e3f01cac26a 100644 --- a/xlators/cluster/ec/src/ec-common.h +++ b/xlators/cluster/ec/src/ec-common.h @@ -75,8 +75,7 @@ typedef enum { #define EC_STATE_HEAL_POST_INODELK_UNLOCK 217 #define EC_STATE_HEAL_DISPATCH 218 -int32_t ec_dispatch_one_retry(ec_fop_data_t * fop, int32_t idx, int32_t op_ret, - int32_t op_errno); +int32_t ec_dispatch_one_retry(ec_fop_data_t *fop, int32_t idx, int32_t op_ret); int32_t ec_dispatch_next(ec_fop_data_t * fop, int32_t idx); void ec_complete(ec_fop_data_t * fop); diff --git a/xlators/cluster/ec/src/ec-dir-read.c b/xlators/cluster/ec/src/ec-dir-read.c index 354c63d3683..782187856fc 100644 --- a/xlators/cluster/ec/src/ec-dir-read.c +++ b/xlators/cluster/ec/src/ec-dir-read.c @@ -361,7 +361,7 @@ int32_t ec_readdir_cbk(call_frame_t * frame, void * cookie, xlator_t * this, ec_adjust_readdir(fop->xl->private, idx, entries); } - if (!ec_dispatch_one_retry(fop, idx, op_ret, op_errno)) + if (!ec_dispatch_one_retry(fop, idx, op_ret)) { if (fop->cbks.readdir != NULL) { @@ -429,6 +429,8 @@ int32_t ec_manager_readdir(ec_fop_data_t * fop, int32_t state) if (fop->offset != 0) { + /* Non-zero offset is irrecoverable error as the offset may not be + * valid on other bricks*/ int32_t idx = -1; idx = ec_deitransform (fop->xl, fop->offset); @@ -448,7 +450,6 @@ int32_t ec_manager_readdir(ec_fop_data_t * fop, int32_t state) return EC_STATE_REPORT; case -EC_STATE_INIT: - case -EC_STATE_REPORT: if (fop->id == GF_FOP_READDIR) { if (fop->cbks.readdir != NULL) @@ -467,6 +468,7 @@ int32_t ec_manager_readdir(ec_fop_data_t * fop, int32_t state) } case EC_STATE_REPORT: + case -EC_STATE_REPORT: return EC_STATE_END; default: @@ -564,7 +566,7 @@ int32_t ec_readdirp_cbk(call_frame_t * frame, void * cookie, xlator_t * this, ec_adjust_readdir(fop->xl->private, idx, entries); } - if (!ec_dispatch_one_retry(fop, idx, op_ret, op_errno)) + if (!ec_dispatch_one_retry(fop, idx, op_ret)) { if (fop->cbks.readdirp != NULL) { diff --git a/xlators/cluster/ec/src/ec-inode-read.c b/xlators/cluster/ec/src/ec-inode-read.c index ae02e964c3d..ef2170f8924 100644 --- a/xlators/cluster/ec/src/ec-inode-read.c +++ b/xlators/cluster/ec/src/ec-inode-read.c @@ -35,7 +35,7 @@ int32_t ec_access_cbk(call_frame_t * frame, void * cookie, xlator_t * this, ec_trace("CBK", fop, "idx=%d, frame=%p, op_ret=%d, op_errno=%d", idx, frame, op_ret, op_errno); - if (!ec_dispatch_one_retry(fop, idx, op_ret, op_errno)) + if (!ec_dispatch_one_retry(fop, idx, op_ret)) { if (fop->cbks.access != NULL) { @@ -73,13 +73,13 @@ int32_t ec_manager_access(ec_fop_data_t * fop, int32_t state) return EC_STATE_REPORT; case -EC_STATE_INIT: - case -EC_STATE_REPORT: if (fop->cbks.access != NULL) { fop->cbks.access(fop->req_frame, fop, fop->xl, -1, fop->error, NULL); } + case -EC_STATE_REPORT: case EC_STATE_REPORT: return EC_STATE_END; @@ -968,7 +968,7 @@ int32_t ec_readlink_cbk(call_frame_t * frame, void * cookie, xlator_t * this, ec_iatt_rebuild(fop->xl->private, buf, 1, 1); } - if (!ec_dispatch_one_retry(fop, idx, op_ret, op_errno)) + if (!ec_dispatch_one_retry(fop, idx, op_ret)) { if (fop->cbks.readlink != NULL) { @@ -1006,7 +1006,6 @@ int32_t ec_manager_readlink(ec_fop_data_t * fop, int32_t state) return EC_STATE_REPORT; case -EC_STATE_INIT: - case -EC_STATE_REPORT: if (fop->cbks.readlink != NULL) { fop->cbks.readlink(fop->req_frame, fop, fop->xl, -1, @@ -1014,6 +1013,7 @@ int32_t ec_manager_readlink(ec_fop_data_t * fop, int32_t state) } case EC_STATE_REPORT: + case -EC_STATE_REPORT: return EC_STATE_END; default: |