| Commit message (Collapse) | Author | Age | Files | Lines |
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AFR restores atime/mtime only as a part of data heal. For non-regular
files (dirs, symlinks, char/block/socket files etc) which do not undergo
data-heal, atime/mtime is not restored.
This patch restores atime/mtime as a part of metadata heal for such
files.
Change-Id: Id8da885fc93fdf65c2f4bae2af3605b146ac1f16
BUG: 1429198
Signed-off-by: Ravishankar N <ravishankar@redhat.com>
Reviewed-on: https://review.gluster.org/16844
Reviewed-by: Pranith Kumar Karampuri <pkarampu@redhat.com>
Tested-by: Pranith Kumar Karampuri <pkarampu@redhat.com>
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>
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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>
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Problem:
The various split-brain resolution policies (favorite-child-policy based,
CLI based and mount (get/setfattr) based) attempt to resolve split-brain
even when not all bricks of replica are up. This can be a problem when
say in a replica 3, the only good copy is down and the other 2 bricks
are up and blame each other (i.e. split-brain). We end up healing the
file in such a case and allow I/O on it.
Fix:
A decision on whether the file is in split-brain or not must be taken
only if we are able to examine the afr xattrs of *all* bricks of a given
replica.
Change-Id: Icddb1268b380005799990f5379ef957d84639ef9
BUG: 1417522
Signed-off-by: Ravishankar N <ravishankar@redhat.com>
Reviewed-on: https://review.gluster.org/16476
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: Pranith Kumar Karampuri <pkarampu@redhat.com>
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Summary:
- Fixes a bug where data-self-heal-window was ignored and instead
hard-coded to 128k
- Cherry-pick of D2752781
Test Plan:
- Prove tests
Reviewed By: sshreyas
Signed-off-by: Shreyas Siravara <sshreyas@fb.com>
Change-Id: Ie38456ce9ad90921f7456fe02aaace88393433a9
BUG: 1404424
Reviewed-on-release-3.8-fb: http://review.gluster.org/16083
Tested-by: Shreyas Siravara <sshreyas@fb.com>
Reviewed-by: Kevin Vigor <kvigor@fb.com>
Reviewed-on: https://review.gluster.org/16123
Reviewed-by: Jeff Darcy <jdarcy@redhat.com>
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>
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This patch adds support for multiple brick translator stacks running
in a single brick server process. This reduces our per-brick memory usage by
approximately 3x, and our appetite for TCP ports even more. It also creates
potential to avoid process/thread thrashing, and to improve QoS by scheduling
more carefully across the bricks, but realizing that potential will require
further work.
Multiplexing is controlled by the "cluster.brick-multiplex" global option. By
default it's off, and bricks are started in separate processes as before. If
multiplexing is enabled, then *compatible* bricks (mostly those with the same
transport options) will be started in the same process.
Change-Id: I45059454e51d6f4cbb29a4953359c09a408695cb
BUG: 1385758
Signed-off-by: Jeff Darcy <jdarcy@redhat.com>
Reviewed-on: https://review.gluster.org/14763
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: Vijay Bellur <vbellur@redhat.com>
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Problem:
__afr_set_in_flight_sb_status(), which resets event_gen to zero, is
called if failed_subvols[i] is non-zero for any brick. But failed_subvols[i]
is true even if the brick was down *before* the transaction started.
Hence say if 1 brick is down in a replica-3, every writev that comes
will trigger an inode refresh because of this resetting, as seen from
the no. of FSTATs in the profile info in the BZ.
Fix:
Reset event gen only if the brick was previously a valid read child and
the FOP failed on it the first time.
Also `s/afr_inode_read_subvol_reset/afr_inode_event_gen_reset` because
the function only resets event gen and not the data/metadata readable.
Change-Id: I603ae646cbde96995c35db77916e2ed80b602a91
BUG: 1409206
Signed-off-by: Ravishankar N <ravishankar@redhat.com>
Reviewed-on: http://review.gluster.org/16309
Smoke: Gluster Build System <jenkins@build.gluster.org>
Reviewed-by: Pranith Kumar Karampuri <pkarampu@redhat.com>
Tested-by: Pranith Kumar Karampuri <pkarampu@redhat.com>
NetBSD-regression: NetBSD Build System <jenkins@build.gluster.org>
CentOS-regression: Gluster Build System <jenkins@build.gluster.org>
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* Even on errors like ENOENT, AFR logs split-brain after
read-txn refresh, introduced by commit a07ddd8f.
This can be a cause of much panic and confusion and needs to be fixed.
* Also fixed this issue in write-txns.
* Fixed afr read txns to log about split-brain only after knowing that
there is no split-brain choice configured.
* Removed code duplication
* Fixed incorrect passing of error code in afr_write_txn_refresh_done()
(the function was passing -0 as errno to gf_msg().
Change-Id: I354f454ce5bf0e5f00bc27916eb597367cb7d927
BUG: 1411625
Signed-off-by: Krutika Dhananjay <kdhananj@redhat.com>
Reviewed-on: http://review.gluster.org/16362
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: Pranith Kumar Karampuri <pkarampu@redhat.com>
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Issue:
In disperse volume, the file is present across bricks, hence the stat
from one brick doesn't carry the valid size of the file. Therefore
the upcall from one brick updating the md-cache results in wrong size
being updated.
Fix:
If the notification is cache invalidation then, indicate md-cache that
the attributes is invalid.
BUG: 1410375
Change-Id: Id89d2283478e70b62b435a8891fffc86d2be8cb2
Signed-off-by: Poornima G <pgurusid@redhat.com>
Reviewed-on: http://review.gluster.org/16329
Smoke: Gluster Build System <jenkins@build.gluster.org>
NetBSD-regression: NetBSD Build System <jenkins@build.gluster.org>
Reviewed-by: Xavier Hernandez <xhernandez@datalab.es>
CentOS-regression: Gluster Build System <jenkins@build.gluster.org>
Reviewed-by: Pranith Kumar Karampuri <pkarampu@redhat.com>
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PROBLEM:
Consider a volume with granular-entry-heal and sharding enabled. When
a replica is down and a shard is created as part of a write, the name
index is correctly created under indices/entry-changes/<dot-shard-gfid>.
Now when a read on the same region triggers another MKNOD, the fop
fails on the online bricks with EEXIST. By virtue of this being a
symmetric error, the failed_subvols[] array is reset to all zeroes.
Because of this, before post-op, the GF_XATTROP_ENTRY_OUT_KEY will be
set, causing the name index, which was created in the previous MKNOD
operation, to be wrongly deleted in THIS MKNOD operation.
FIX:
The ideal fix would have been for a transaction to delete the name
index ONLY if it knows it is the one that created the index in the first
place. This would involve gathering information as to whether THIS xattrop
created the index from individual bricks, aggregating their responses and
based on the various posisble combinations of responses, decide whether to
delete the index or not. This is rather complex. Simpler fix would be
for post-op to examine local->op_ret in the event of no failed_subvols
to figure out whether to delete the name index or not. This can occasionally
lead to creation of stale name indices but they won't be affecting the IO path
or mess with pending changelogs in any way and self-heal in its crawl of
"entry-changes" directory would take care to delete such indices.
Change-Id: Ic1b5257f4dc9c20cb740a866b9598cf785a1affa
BUG: 1408712
Signed-off-by: Krutika Dhananjay <kdhananj@redhat.com>
Reviewed-on: http://review.gluster.org/16286
Smoke: Gluster Build System <jenkins@build.gluster.org>
Reviewed-by: Pranith Kumar Karampuri <pkarampu@redhat.com>
NetBSD-regression: NetBSD Build System <jenkins@build.gluster.org>
CentOS-regression: Gluster Build System <jenkins@build.gluster.org>
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Problem:
afr_replies_interpret() used the 'readable' matrix to trigger client
side heals after inode refresh. But for arbiter, readable is always
zero. So when `dd` is run with a data brick down, spurious data heals
are are triggered. These heals open an fd, causing eager lock to be
disabled (open fd count >1) in afr transactions, leading to extra FXATTROPS
Fix:
Use the accused matrix (derived from interpreting the afr pending
xattrs) to decide whether we can start heal or not.
Change-Id: Ibbd56c9aed6026de6ec42422e60293702aaf55f9
BUG: 1408395
Signed-off-by: Ravishankar N <ravishankar@redhat.com>
Reviewed-on: http://review.gluster.org/16277
NetBSD-regression: NetBSD Build System <jenkins@build.gluster.org>
CentOS-regression: Gluster Build System <jenkins@build.gluster.org>
Smoke: Gluster Build System <jenkins@build.gluster.org>
Reviewed-by: Pranith Kumar Karampuri <pkarampu@redhat.com>
Tested-by: Pranith Kumar Karampuri <pkarampu@redhat.com>
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Before http://review.gluster.org/#/c/15673/, after inode refresh, we
failed read txns in case of EIO or event_generation being zero. For
write transactions, the check was only for EIO. 15673 re-factored the
code to fail both read and write when event_generation=0. This seems to
have caused a regression as explained in the BZ.
This patch restores that behaviour in afr_txn_refresh_done().
Change-Id: Ib8e116506badce6f58b55827dbe403d95069d744
BUG: 1406224
Signed-off-by: Ravishankar N <ravishankar@redhat.com>
Reviewed-on: http://review.gluster.org/16205
Reviewed-by: Pranith Kumar Karampuri <pkarampu@redhat.com>
Smoke: Gluster Build System <jenkins@build.gluster.org>
CentOS-regression: Gluster Build System <jenkins@build.gluster.org>
NetBSD-regression: NetBSD Build System <jenkins@build.gluster.org>
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Incorrect initialisation of local->optimistic_change_log was leading
to skipped pre-op and post-op even when a brick didn't participate in
the txn because it was down.
The result - missing granular name index resulting in some entries
never getting healed.
FIX:
Initialise local->optimistic_change_log just before pre-op.
Also fixed granular entry heal to create the granular name index in
pre-op as opposed to post-op. This is to prevent loss of granular
information when during an entry txn, the good (src) brick goes
offline before the post-op is done. This would cause self-heal to
do conservative merge (since dirty xattr is the only information
available), which when granular-entry-heal is enabled, expects
granular indices, the lack of which can lead to loss of data in
the worst case.
Change-Id: Ia3ad716d6fb1821555f02180e86e8711a79f958d
BUG: 1402730
Signed-off-by: Krutika Dhananjay <kdhananj@redhat.com>
Reviewed-on: http://review.gluster.org/16075
Smoke: Gluster Build System <jenkins@build.gluster.org>
Reviewed-by: Pranith Kumar Karampuri <pkarampu@redhat.com>
NetBSD-regression: NetBSD Build System <jenkins@build.gluster.org>
CentOS-regression: Gluster Build System <jenkins@build.gluster.org>
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When we have cascading locks with same lk-owner there is a possibility for
a deadlock to happen. One example is as follows:
self-heal takes a lock in data-domain for big name with 256 chars of "aaaa...a"
and starts heal in a 3-way replication when brick-0 is offline and healing from
brick-1 to brick-2 is in progress. So this lock is active on brick-1 and
brick-2. Now brick-0 comes online and an operation wants to take full lock and
the lock is granted at brick-0 and it is waiting for lock on brick-1. As part
of entry healing it takes full locks on all the available bricks and then
proceeds with healing the entry. Now this lock will start waiting on brick-0
because some other operation already has a granted lock on it. This leads to a
deadlock. Operation is waiting for unlock on "aaaa..." by heal where as heal is
waiting for the operation to unlock on brick-0. Initially I thought this is
happening because healing is trying to take a lock on all the available bricks
instead of just the bricks that are participating in heal. But later realized
that same kind of deadlock can happen if a brick goes down after the heal
starts but comes back before it completes. So the essential problem is the
cascading locks with same lk-owner which were added for backward compatibility
with afr-v1 which can be safely removed now that versions with afr-v1 are
already EOL. This patch removes the compatibility with v1 which requires
cascading locks with same lk-owner.
In the next version we can make locking-scheme option a dummy and switch
completely to v2.
BUG: 1401404
Change-Id: Ic9afab8260f5ff4dff5329eb0429811bcb879079
Signed-off-by: Pranith Kumar K <pkarampu@redhat.com>
Reviewed-on: http://review.gluster.org/16024
Smoke: Gluster Build System <jenkins@build.gluster.org>
Reviewed-by: Ravishankar N <ravishankar@redhat.com>
NetBSD-regression: NetBSD Build System <jenkins@build.gluster.org>
CentOS-regression: Gluster Build System <jenkins@build.gluster.org>
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Problem:
1) When a blocking lock is issued and the parallel lock phase fails
on all subvolumes with EAGAIN, it is not switching to serialized
locking phase.
2) When quorum is enabled and locks fail partially it is better
to give errno returned by brick rather than the default
quorum errno.
Fix:
Handled this error case and changed op_errno to reflect the actual
errno in case of quorum error.
BUG: 1369077
Change-Id: Ifac2e4a13686e9fde601873012700966d56a7f31
Signed-off-by: Pranith Kumar K <pkarampu@redhat.com>
Reviewed-on: http://review.gluster.org/15984
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>
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Change-Id: I7b70de317a5f15a3bf483ffe40b971143deddc11
BUG: 1401218
Signed-off-by: Ravishankar N <ravishankar@redhat.com>
Reviewed-on: http://review.gluster.org/16029
Reviewed-by: Pranith Kumar Karampuri <pkarampu@redhat.com>
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>
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Bugs found and fixed:
1. Use correct subvolume index in pre-op-writev compound cbk
2. Prevent use-after-free of local->compound_args members in
compound fops cbk in protocol/client
3. Fix xdata and xattr leaks in client_process_response
4. Fix possible leak of xdata in client_pre_writev() in
test mode.
5. Free req->compound_req_array.compound_req_array_val as well
after freeing its members
6. Free tmp_rsp->flock.lk_owner.lk_owner_val in LK fop.
Change-Id: I15b646d7d4e0e5cd4ea3d2d6452c815cf2eaf68f
BUG: 1401218
Signed-off-by: Krutika Dhananjay <kdhananj@redhat.com>
Reviewed-on: http://review.gluster.org/16020
Smoke: Gluster Build System <jenkins@build.gluster.org>
NetBSD-regression: NetBSD Build System <jenkins@build.gluster.org>
Reviewed-by: Pranith Kumar Karampuri <pkarampu@redhat.com>
CentOS-regression: Gluster Build System <jenkins@build.gluster.org>
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Change-Id: I2beaba829710565a3246f7449a5cd21755cf5f7d
BUG: 1399592
Signed-off-by: Mateusz Slupny <mateusz.slupny@appeartv.com>
Reviewed-on: http://review.gluster.org/15968
Tested-by: Pranith Kumar Karampuri <pkarampu@redhat.com>
NetBSD-regression: NetBSD Build System <jenkins@build.gluster.org>
CentOS-regression: Gluster Build System <jenkins@build.gluster.org>
Reviewed-by: Pranith Kumar Karampuri <pkarampu@redhat.com>
Reviewed-by: Ravishankar N <ravishankar@redhat.com>
Smoke: Gluster Build System <jenkins@build.gluster.org>
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The following have been completely removed from the source tree,
makefiles, configure script, and RPM specfile.
cluster/afr/pump
cluster/ha
cluster/map
features/filter
features/mac-compat
features/path-convertor
features/protect
Change-Id: I2f966999ac3c180296ff90c1799548fba504f88f
Signed-off-by: Jeff Darcy <jdarcy@redhat.com>
Reviewed-on: http://review.gluster.org/15906
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: Vijay Bellur <vbellur@redhat.com>
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(1) afr_have_quorum is dead code. It was copied to afr_has_quorum,
and everything else uses that, but the original was never deleted
(until now).
(2) Auto-quorum should be default for any N>2. Leaving quorum
disabled is BAD, but apparently deemed acceptable for N=2 because
there's no real quorum in that case. For any larger number (including
arbiter configurations) there is such a thing as real quorum and we
should use it by default. Note that for N=3 the answers we get from
"N % 2" (the old check) and "N > 2" (the new one) are the same.
(3) The special case for even N in afr_has_quorum has been simplified and
explained more thoroughly in a comment.
Change-Id: I48b33c15093512fecf516b26dcf09afecb7ae33b
Signed-off-by: Jeff Darcy <jdarcy@redhat.com>
Reviewed-on: http://review.gluster.org/15873
Smoke: Gluster Build System <jenkins@build.gluster.org>
CentOS-regression: Gluster Build System <jenkins@build.gluster.org>
Reviewed-by: Vijay Bellur <vbellur@redhat.com>
NetBSD-regression: NetBSD Build System <jenkins@build.gluster.org>
Reviewed-by: Pranith Kumar Karampuri <pkarampu@redhat.com>
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of cache invalidation(upcall).
Issue:
------
When a cache invalidation is recieved as a result of changing
pending xattr, the read_subvol is reset. Consider the below chain
of execution:
CHILD_DOWN
...
afr_readv
...
afr_inode_refresh
...
afr_inode_read_subvol_reset <- as a result of pending xattr set by
some other client GF_EVENT_UPCALL will
be sent
afr_refresh_done -> this results in an EIO, as the read subvol was
reset by the end of the afr_inode_refresh
Solution:
---------
When GF_EVENT_UPCALL is recieved, instead of resetting read_subvol,
set a variable need_refresh in inode_ctx, the next time some one
starts a txn, along with event gen, need_rrefresh also needs to
be checked.
Change-Id: Ifda21a7a8039b8874215e1afa4bdf20f7d991b58
BUG: 1396952
Signed-off-by: Poornima G <pgurusid@redhat.com>
Reviewed-on: http://review.gluster.org/15892
Reviewed-by: Ravishankar N <ravishankar@redhat.com>
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: Pranith Kumar Karampuri <pkarampu@redhat.com>
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Problem:
Currently, I/O on a split-brained file fails even when the
favorite-child-policy is set until the self-heal is complete.
Fix:
If a valid 'source' is found using the set favorite-child-policy, inspect
and reset the afr pending xattrs on the 'sinks' (inside appropriate locks),
refresh the inode and then proceed with the read or write transaction.
The resetting itself happens in the self-heal code and hence can also
happen in the client side background-heal or by the shd's index-heal in
addition to the txn code path explained above. When it happens in via
heal, we also add checks in undo-pending to not reset the sink xattrs
again.
Change-Id: Ic8c1317720cb26bd114b6fe6af4e58c73b864626
BUG: 1386188
Signed-off-by: Ravishankar N <ravishankar@redhat.com>
Reported-by: Simon Turcotte-Langevin <simon.turcotte-langevin@ubisoft.com>
Reviewed-on: http://review.gluster.org/15673
Tested-by: Pranith Kumar Karampuri <pkarampu@redhat.com>
Smoke: Gluster Build System <jenkins@build.gluster.org>
Reviewed-by: Pranith Kumar Karampuri <pkarampu@redhat.com>
NetBSD-regression: NetBSD Build System <jenkins@build.gluster.org>
CentOS-regression: Gluster Build System <jenkins@build.gluster.org>
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Problems:
1) Inodelk is not taking quorum into account
2) finodelk, [f]entrylk are not implemented correctly
3) By default afr doesn't go for non-blocking parallel locks.
Fix:
Implemented a common framework which can be used by
[f]inodelk/[f]entrylk. Used quorum for the same.
Change-Id: I239f13875a065298630d266941df10cfa3addc85
BUG: 1369077
Signed-off-by: Pranith Kumar K <pkarampu@redhat.com>
Reviewed-on: http://review.gluster.org/15802
Tested-by: Krutika Dhananjay <kdhananj@redhat.com>
Reviewed-by: Krutika Dhananjay <kdhananj@redhat.com>
Smoke: Gluster Build System <jenkins@build.gluster.org>
Reviewed-by: Ravishankar N <ravishankar@redhat.com>
CentOS-regression: Gluster Build System <jenkins@build.gluster.org>
NetBSD-regression: NetBSD Build System <jenkins@build.gluster.org>
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When an afr data transaction is eligible for using
eager-lock, this information is represented in
local->transaction.eager_lock_on. However, if non-blocking
inodelk attempt (which is a full lock) fails, AFR falls back
to blocking locks which are range locks. At this point,
local->transaction.eager_lock[] per brick is reset but
local->transaction.eager_lock_on is still true.
When AFR decides to compound post-op and unlock, it is after
confirming that the transaction did not use eager lock (well,
except for a small bug where local->transaction.locks_acquired[]
is not considered).
But within afr_post_op_unlock_do(), afr again incorrectly sets
the lock range to full-lock based on local->transaction.eager_lock_on
value. This is a bug and can lead to deadlock since the locks acquired
were range locks and a full unlock is being sent leading to unlock failure
and thereby every other lock request (be it from SHD or other clients or
glfsheal) getting blocked forever and the user perceives a hang.
FIX:
Unconditionally rely on the range locks in inodelk object for unlocking
when using compounded post-op + unlock.
Big thanks to Pranith for helping with the debugging.
Change-Id: Idb4938f90397fb4bd90921f9ae6ea582042e5c67
BUG: 1398566
Signed-off-by: Krutika Dhananjay <kdhananj@redhat.com>
Reviewed-on: http://review.gluster.org/15929
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: Pranith Kumar Karampuri <pkarampu@redhat.com>
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Change-Id: Id8ba76ba116d056bc7299dc5ce0980680a5a23f8
BUG: 1398226
Signed-off-by: Krutika Dhananjay <kdhananj@redhat.com>
Reviewed-on: http://review.gluster.org/15924
Reviewed-by: Pranith Kumar Karampuri <pkarampu@redhat.com>
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>
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Currently these are few events related to child_up/down:
GF_EVENT_CHILD_UP : Issued when any of the protocol client
connects.
GF_EVENT_CHILD_MODIFIED : Issued by afr/dht/ec
GF_EVENT_CHILD_DOWN : Issued when any of the protocol client
disconnects.
These events get modified at the dht/afr/ec layers. Here is a
brief on the same.
DHT:
- All the subvolumes reported once, and atleast one child came
up, then GF_EVENT_CHILD_UP is issued
- connect GF_EVENT_CHILD_UP is issued
- disconnect GF_EVENT_CHILD_MODIFIED is issued
- All the subvolumes disconnected, GF_EVENT_CHILD_DOWN is issued
AFR:
- First subvolume came up, then GF_EVENT_CHILD_UP is issued
- Subsequent subvolumes coming up, results in GF_EVENT_CHILD_MODIFIED
- Any of the subvolumes go down, then GF_EVENT_SOME_CHILD_DOWN is issued
- Last up subvolume goes down, then GF_EVENT_CHILD_DOWN is issued
Until the patch [1] introduced GF_EVENT_SOME_CHILD_UP,
GF_EVENT_CHILD_MODIFIED was issued by afr/dht when any of the subvolumes
go up or down.
Now with md-cache changes, there is a necessity to differentiate between
child up and down. Hence, introducing GF_EVENT_SOME_DESCENDENT_DOWN/UP and
getting rid of GF_EVENT_CHILD_MODIFIED.
[1] http://review.gluster.org/12573
Change-Id: I704140b6598f7ec705493251d2dbc4191c965a58
BUG: 1396038
Signed-off-by: Poornima G <pgurusid@redhat.com>
Reviewed-on: http://review.gluster.org/15764
CentOS-regression: Gluster Build System <jenkins@build.gluster.org>
NetBSD-regression: NetBSD Build System <jenkins@build.gluster.org>
Smoke: Gluster Build System <jenkins@build.gluster.org>
Reviewed-by: N Balachandran <nbalacha@redhat.com>
Reviewed-by: Pranith Kumar Karampuri <pkarampu@redhat.com>
Reviewed-by: Rajesh Joseph <rjoseph@redhat.com>
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Raghavendra G found that posix is trying to print %s
but passing an int when HEALTH_CHECK fails in posix.
These are the kind of bugs that should be caught
at compilation itself.
Also fixed the problematic gf_event() callers.
BUG: 1386097
Change-Id: Id7bd6d9a9690237cec3ca1aefa2aac085e8a1270
Signed-off-by: Pranith Kumar K <pkarampu@redhat.com>
Reviewed-on: http://review.gluster.org/15671
Smoke: Gluster Build System <jenkins@build.gluster.org>
NetBSD-regression: NetBSD Build System <jenkins@build.gluster.org>
Reviewed-by: Atin Mukherjee <amukherj@redhat.com>
CentOS-regression: Gluster Build System <jenkins@build.gluster.org>
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Change-Id: I39de2bcfc660f23a4229a885a0e0420ca949ffc9
BUG: 1392865
Signed-off-by: Krutika Dhananjay <kdhananj@redhat.com>
Reviewed-on: http://review.gluster.org/15800
Reviewed-by: Pranith Kumar Karampuri <pkarampu@redhat.com>
Tested-by: Pranith Kumar Karampuri <pkarampu@redhat.com>
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>
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On a sharded volume when a brick is replaced while IO is going on, named
lookup on individual shards as part of read/write was failing with
ENOENT on the replaced brick, and as a result AFR initiated name heal in
lookup callback. But since pargfid was empty (which is what this patch
attempts to fix), the resolution of the shards by protocol/server used
to fail and the following pattern of logs was seen:
Brick-logs:
[2016-11-08 07:41:49.387127] W [MSGID: 115009]
[server-resolve.c:566:server_resolve] 0-rep-server: no resolution type
for (null) (LOOKUP)
[2016-11-08 07:41:49.387157] E [MSGID: 115050]
[server-rpc-fops.c:156:server_lookup_cbk] 0-rep-server: 91833: LOOKUP(null)
(00000000-0000-0000-0000-000000000000/16d47463-ece5-4b33-9c93-470be918c0f6.82)
==> (Invalid argument) [Invalid argument]
Client-logs:
[2016-11-08 07:41:27.497687] W [MSGID: 114031]
[client-rpc-fops.c:2930:client3_3_lookup_cbk] 2-rep-client-0: remote
operation failed. Path: (null) (00000000-0000-0000-0000-000000000000)
[Invalid argument]
[2016-11-08 07:41:27.497755] W [MSGID: 114031]
[client-rpc-fops.c:2930:client3_3_lookup_cbk] 2-rep-client-1: remote
operation failed. Path: (null) (00000000-0000-0000-0000-000000000000)
[Invalid argument]
[2016-11-08 07:41:27.498500] W [MSGID: 114031]
[client-rpc-fops.c:2930:client3_3_lookup_cbk] 2-rep-client-2: remote
operation failed. Path: (null) (00000000-0000-0000-0000-000000000000)
[Invalid argument]
[2016-11-08 07:41:27.499680] E [MSGID: 133010]
Also, this patch makes AFR by itself choose a non-NULL pargfid even if
its ancestors fail to initialize all pargfid placeholders.
Change-Id: I5f85b303ede135baaf92e87ec8e09941f5ded6c1
BUG: 1392445
Signed-off-by: Krutika Dhananjay <kdhananj@redhat.com>
Reviewed-on: http://review.gluster.org/15788
CentOS-regression: Gluster Build System <jenkins@build.gluster.org>
NetBSD-regression: NetBSD Build System <jenkins@build.gluster.org>
Reviewed-by: Ravishankar N <ravishankar@redhat.com>
Reviewed-by: Pranith Kumar Karampuri <pkarampu@redhat.com>
Smoke: Gluster Build System <jenkins@build.gluster.org>
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Thanks a lot to xiaoping.wu@nokia.com from Nokia for the bug and the
fix.
BUG: 1384297
Change-Id: Ie443237e85d34633b5dd30f85eaa2ac34e45754c
Signed-off-by: Pranith Kumar K <pkarampu@redhat.com>
Reviewed-on: http://review.gluster.org/15728
Smoke: Gluster Build System <jenkins@build.gluster.org>
NetBSD-regression: NetBSD Build System <jenkins@build.gluster.org>
Reviewed-by: Xavier Hernandez <xhernandez@datalab.es>
CentOS-regression: Gluster Build System <jenkins@build.gluster.org>
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Problem:
Consider a replica setup, where one mount writes data to a
file and the other mount reads the file. In afr, read operations
are not transaction based, a brick(read subvolume) is chosen as
a part of lookup or other operations, read is always wound only
to the read subvolume, even if there was write from a different client
that failed on this brick. This stale read continues until there is
a lookup or any write operation from the mount point. Currently, this
is not a major issue, as a lookup is issued before every read and it will
switch the read subvolume to a correct one. But with the plan of
increasing md-cache timeout to 600s, the stale read problem will be
more pronounced, i.e. stale read can continue for 600s(or more if cascaded
with readdirp), as there will be no lookups.
Solution:
Afr doesn't have any built-in solution for stale read(without affecting
the performance). The solution that came up, was to use upcall. When a file
on any brick is marked bad for the first time, upcall sends a notification
to all the clients that had recently accessed the file. The solution has
2 parts:
- Identifying when a file is marked bad, on any of the bricks,
for the first time
- Client side actions on recieving the notifications
Identifying when a file is marked bad on any of the bricks for the first time:
-----------------------------------------------------------------------------
The idea is to track xattrop in upcall. xattrop currently comes with 2 afr
xattrs - afr dirty bit and afr pending xattrs.
Dirty xattr is set to 1 before every write, and is unset if write succeeds.
In certain scenarios, dirty xattr can be 0 and still the file could be bad
copy. Hence do not track dirty xattr.
Pending xattr is set on the good copy, indicating the other bricks that have
bad copy. It is still not as simple as, notifying when any of the pending xattrs
change. It could lead to flood of notifcations, in case the other brick is
completely down or consistantly failing. Hence it is important to notify only
once, the first time a good copy is marked bad.
Client side actions on recieving pending xattr change, notification:
--------------------------------------------------------------------
md-cache will invalidate the cache of that file, so that further lookup is
passed down to afr and hence update the read subvolume. Invalidating only in
md-cache is not enough, consider the folling oder of opertaions:
- pending xattr invalidation - invalidate md-cache
- readdirp on the bad read subvolume - fill md-cache
- lookup (served from md-cache)
- read - wound to the old read subvol.
Hence, along with invalidating md-cache, it is very important to reset the
read subvolume for that file, in afr.
Design Credit: Anuradha Talur, Ravishankar N
1. xattrop doesn't carry info saying post op/pre op.
2. Pre xattrop will have 0 value for all pending xattrs,
the cbk of pre xattrop carries the on-disk xattr value.
Non zero indicated healing is required.
3. Post xattrop will have non zero value for any of the
pending xattrs, if the fop failed on any of the bricks.
Change-Id: I469cbc111714c433984fe1c922be2ef113c25804
BUG: 1211863
Signed-off-by: Poornima G <pgurusid@redhat.com>
Reviewed-on: http://review.gluster.org/15398
Reviewed-by: Pranith Kumar Karampuri <pkarampu@redhat.com>
Tested-by: Pranith Kumar Karampuri <pkarampu@redhat.com>
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>
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In afr lookup when NULL dict is received in lookup, afr
is supposed to set all the xattrs it requires in a new dict
it creates, but for 'link-count' it is trying to set to the
dict that is passed in lookup which can be NULL sometimes.
This is leading to error logs. Fixed the same in this patch.
BUG: 1385104
Change-Id: I679af89cfc410cbc35557ae0691763a05eb5ed0e
Signed-off-by: Pranith Kumar K <pkarampu@redhat.com>
Reviewed-on: http://review.gluster.org/15646
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>
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Problem:
Sharding exposed a bug in arbiter config. where `dd` throughput was
extremely slow. Shard xlator was sending a fxattrop to update the file
size immediately after a writev. Arbiter was incorrectly over-riding the
LLONGMAX-1 start offset (for metadata domain locks) for this fxattrop,
causing the inodelk to be taken on the data domain. And since the
preceeding writev hadn't released the lock (afr does a 'lazy'
unlock if write succeeds on all bricks), this degraded to a blocking
lock causing extra lock/unlock calls and delays.
Fix:
Modify flock.l_len and flock.l_start to take full locks only for data
transactions.
Change-Id: I906895da2f2d16813607e6c906cb4defb21d7c3b
BUG: 1384906
Signed-off-by: Ravishankar N <ravishankar@redhat.com>
Reported-by: Max Raba <max.raba@comsysto.com>
Reviewed-on: http://review.gluster.org/15641
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: Pranith Kumar Karampuri <pkarampu@redhat.com>
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Problem: Currently heal info command prints all
the files/directories if the index for the
file/directory is present in .glusterfs/indices folder.
After implementing patch http://review.gluster.org/#/c/13733/
indices of the file which is going through update fop
will also be present in .glusterfs/indices even
if the fop is successful on all the brick. At this time
if heal info command is being used, it will also display this
file which is actually healthy and does not require any heal.
Solution: Take lock on a file corresponding to the indices
and inspect xattrs to decide if the file needs heal or not.
Change-Id: I6361e2813ece369be12d02e74816df4eddb81cfa
BUG: 1366815
Signed-off-by: Ashish Pandey <aspandey@redhat.com>
Reviewed-on: http://review.gluster.org/15543
NetBSD-regression: NetBSD Build System <jenkins@build.gluster.org>
Reviewed-by: Pranith Kumar Karampuri <pkarampu@redhat.com>
Reviewed-by: Xavier Hernandez <xhernandez@datalab.es>
CentOS-regression: Gluster Build System <jenkins@build.gluster.org>
Smoke: Gluster Build System <jenkins@build.gluster.org>
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1. While looking at glustershd logs in DEBUG log-level, it was found that
all bricks of the replica were printed as local bricks even though they
were not. Fixed it.
2. Print the name of the subvol from which the entry was got during
index crawl.
Change-Id: I08b32e38694c755715e9fe0c0e1dd9212abcfb16
BUG: 1381421
Signed-off-by: Ravishankar N <ravishankar@redhat.com>
Reviewed-on: http://review.gluster.org/15610
Reviewed-by: Pranith Kumar Karampuri <pkarampu@redhat.com>
CentOS-regression: Gluster Build System <jenkins@build.gluster.org>
NetBSD-regression: NetBSD Build System <jenkins@build.gluster.org>
Smoke: Gluster Build System <jenkins@build.gluster.org>
Reviewed-by: Vijay Bellur <vbellur@redhat.com>
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Currently ipc() is not implemented in afr. md-cache and upcall
uses ipc to register the list of xattrs, [1] for more details.
For the ipc op GF_IPC_TARGET_UPCALL, it has to be wound to all
the replica subvolumes. ipc() is failed when any of the
subvolumes fails with other than ENOTCONN or all of the subvolumes
are down.
[1] http://review.gluster.org/#/c/15002/
Change-Id: I0f651330eafda64e4d922043fe53bd0014536247
BUG: 1211863
Signed-off-by: Poornima G <pgurusid@redhat.com>
Reviewed-on: http://review.gluster.org/15378
Tested-by: Pranith Kumar Karampuri <pkarampu@redhat.com>
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: Pranith Kumar Karampuri <pkarampu@redhat.com>
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Problem:
In arbiter configuration, posix-xlator in the arbiter brick always sets
the GF_CONTENT_KEY in the response dict with a value 0. If the file size on
the data bricks is more than quick-read's max-file-size (64kb default),
those bricks don't set the key. Because of this difference in the no. of dict
elements, afr triggers metadata heal in lookup code path, in turn
leading to extra lookups+inodelks.
Fix:
Changed afr dict comparison logic to ignore all virtual xattrs and the
on-disk ones that we should not be healing.
Also removed is_virtual_xattr() function. The original callers to this
function (upcall) don't seem to need it anymore.
Change-Id: I05730bdd39d8fb0b9a49a5fc9c0bb01f0d3bb308
BUG: 1378684
Signed-off-by: Ravishankar N <ravishankar@redhat.com>
Reviewed-on: http://review.gluster.org/15548
NetBSD-regression: NetBSD Build System <jenkins@build.gluster.org>
CentOS-regression: Gluster Build System <jenkins@build.gluster.org>
Smoke: Gluster Build System <jenkins@build.gluster.org>
Reviewed-by: Pranith Kumar Karampuri <pkarampu@redhat.com>
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Modified afr event message to add a 'type' key as detailed in the BZ.
Also added events for data and metadata split-brain.
Change-Id: I8156674b4b6a501499fc10fd68e05115fdaef3e4
BUG: 1378072
Signed-off-by: Ravishankar N <ravishankar@redhat.com>
Reviewed-on: http://review.gluster.org/15550
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: Pranith Kumar Karampuri <pkarampu@redhat.com>
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And minor cleanup of a few of the Makefile.am files while we're
at it.
Rewrite the make rules to do what xdrgen does. Now we can get rid
of xdrgen.
Note 1. netbsd6's sed doesn't do -i. Why are we still running
smoke tests on netbsd6 and not netbsd7? We barely support netbsd7
as it is.
Note 2. Why is/was libgfxdr.so (.../rpc/xdr/src/...) linked with
libglusterfs? A cut-and-paste mistake? It has no references to
symbols in libglusterfs.
Note3. "/#ifndef\|#define\|#endif/" (note the '\'s) is a _basic_
regex that matches the same lines as the _extended_ regex
"/#(ifndef|define|endif)/". To match the extended regex sed needs to
be run with -r on Linux; with -E on *BSD. However NetBSD's and
FreeBSD's sed helpfully also provide -r for compatibility. Using a
basic regex avoids having to use a kludge in order to run sed with
the correct option on OS X.
Note 4. Not copying the bit of xdrgen that inserts copyright/license
boilerplate. AFAIK it's silly to pretend that machine generated
files like these can be copyrighted or need license boilerplate.
The XDR source files have their own copyright and license; and
their copyrights are bound to be more up to date than old
boilerplate inserted by a script. From what I've seen of other
Open Source projects -- e.g. gcc and its C parser files generated
by yacc and lex -- IIRC they don't bother to add copyright/license
boilerplate to their generated files.
It appears that it's a long-standing feature of make (SysV, BSD,
gnu) for out-of-tree builds to helpfully pretend that the source
files it can find in the VPATH "exist" as if they are in the $cwd.
rpcgen doesn't work well in this situation and generates files
with "bad" #include directives.
E.g. if you `rpcgen ../../../../$srcdir/rpc/xdr/src/glusterfs3-xdr.x`,
you get an #include directive in the generated .c file like this:
...
#include "../../../../$srcdir/rpc/xdr/src/glusterfs3-xdr.h"
...
which (obviously) results in compile errors on out-of-tree build
because the (generated) header file doesn't exist at that location.
Compared to `rpcgen ./glusterfs3-xdr.x` where you get:
...
#include "glusterfs3-xdr.h"
...
Which is what we need. We have to resort to some Stupid Make Tricks
like the addition of various .PHONY targets to work around the VPATH
"help".
Warning: When doing an in-tree build, -I$(top_builddir)/rpc/xdr/...
looks exactly like -I$(top_srcdir)/rpc/xdr/... Don't be fooled though.
And don't delete the -I$(top_builddir)/rpc/xdr/... bits
Change-Id: Iba6ab96b2d0a17c5a7e9f92233993b318858b62e
BUG: 1330604
Signed-off-by: Kaleb S KEITHLEY <kkeithle@redhat.com>
Reviewed-on: http://review.gluster.org/14085
Tested-by: Niels de Vos <ndevos@redhat.com>
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: Niels de Vos <ndevos@redhat.com>
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http://review.gluster.org/14085 fixes a "pragma leak" where the
generated rpc/xdr headers have a pair of pragmas that disable these
warnings. With the warnings disabled, many unused variables have
crept into the code base.
And 14085 won't pass its own smoke test until all these warnings are
fixed.
BUG: 1369124
Change-Id: I4946d460f66d3430bac8910260c0cb1b3e9ff87b
Signed-off-by: Kaleb S. KEITHLEY <kkeithle@redhat.com>
Reviewed-on: http://review.gluster.org/15513
Smoke: Gluster Build System <jenkins@build.gluster.org>
Reviewed-by: Niels de Vos <ndevos@redhat.com>
NetBSD-regression: NetBSD Build System <jenkins@build.gluster.org>
CentOS-regression: Gluster Build System <jenkins@build.gluster.org>
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http://review.gluster.org/14085 fixes a "pragma leak" where the
generated rpc/xdr headers have a pair of pragmas that disable these
warnings. With the warnings disabled, many unused variables have
crept into the code base.
And 14085 won't pass its own smoke test until all these warnings are
fixed.
BUG: 1369124
Change-Id: I55d4106ac828380f3315f5a21593390905d3ab3a
Signed-off-by: Kaleb S. KEITHLEY <kkeithle@redhat.com>
Reviewed-on: http://review.gluster.org/15476
Reviewed-by: Ravishankar N <ravishankar@redhat.com>
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>
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Added the following events for the eventing framework:
"EVENT_AFR_QUORUM_MET", --> Sent when quorum is met.
"EVENT_AFR_QUORUM_FAIL" -->Sent when quorum is lost.
"EVENT_AFR_SUBVOL_UP" -->Sent when afr witnesses the first up subvolume.
"EVENT_AFR_SUBVOLS_DOWN"-->Sent when all children of an afr subvol are down.
"EVENT_AFR_SPLIT_BRAIN" -->Sent when self-heal detects split-brain in heal
path (not read/write path).
Change-Id: I937c61ca1ce78b5922ade73c7bfa3051df59c513
BUG: 1371485
Signed-off-by: Ravishankar N <ravishankar@redhat.com>
Reviewed-on: http://review.gluster.org/15349
Reviewed-by: Pranith Kumar Karampuri <pkarampu@redhat.com>
Tested-by: Pranith Kumar Karampuri <pkarampu@redhat.com>
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>
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Change-Id: Ib06ece3cce1b10d28d6d2953da28444f5c2457ad
BUG: 1290304
Signed-off-by: Anuradha Talur <atalur@redhat.com>
Reviewed-on: http://review.gluster.org/15014
Tested-by: Pranith Kumar Karampuri <pkarampu@redhat.com>
Smoke: Gluster Build System <jenkins@build.gluster.org>
CentOS-regression: Gluster Build System <jenkins@build.gluster.org>
NetBSD-regression: NetBSD Build System <jenkins@build.gluster.org>
Reviewed-by: Krutika Dhananjay <kdhananj@redhat.com>
Reviewed-by: Pranith Kumar Karampuri <pkarampu@redhat.com>
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The command basically allows replace brick with src and
dst bricks as same.
Usage:
gluster v reset-brick <volname> <hostname:brick-path> start
This command kills the brick to be reset. Once this command is run,
admin can do other manual operations that they need to do,
like configuring some options for the brick. Once this is done,
resetting the brick can be continued with the following options.
gluster v reset-brick <vname> <hostname:brick> <hostname:brick> commit {force}
Does the job of resetting the brick. 'force' option should be used
when the brick already contains volinfo id.
Problem: On doing a disk-replacement of a brick in a replicate volume
the following 2 scenarios may occur :
a) there is a chance that reads are served from this replaced-disk brick,
which leads to empty reads. b) potential data loss if next writes succeed
only on replaced brick, and heal is done to other bricks from this one.
Solution: After disk-replacement, make sure that reset-brick command is
run for that brick so that pending markers are set for the brick and it
is not chosen as source for reads and heal. But, as of now replace-brick
for the same brick-path is not allowed. In order to fix the above
mentioned problem, same brick-path replace-brick is needed.
With this patch reset-brick commit {force} will be allowed even when
source and destination <hostname:brickpath> are identical as long as
1) destination brick is not alive
2) source and destination brick have the same brick uuid and path.
Also, the destination brick after replace-brick will use the same port
as the source brick.
Change-Id: I440b9e892ffb781ea4b8563688c3f85c7a7c89de
BUG: 1266876
Signed-off-by: Anuradha Talur <atalur@redhat.com>
Reviewed-on: http://review.gluster.org/12250
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: Ashish Pandey <aspandey@redhat.com>
Reviewed-by: Pranith Kumar Karampuri <pkarampu@redhat.com>
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http://review.gluster.org/14085 fixes a/the "leak" - via the
generated rpc/xdr headers - of pragmas that mask these warnings.
However 14085 won't pass the smoke test until all the warnings are
fixed.
Change-Id: I98e3308a2548ae095048caa99c86edec15b5e782
BUG: 1369124
Signed-off-by: Kaleb S. KEITHLEY <kkeithle@redhat.com>
Reviewed-on: http://review.gluster.org/15241
CentOS-regression: Gluster Build System <jenkins@build.gluster.org>
Reviewed-by: Krutika Dhananjay <kdhananj@redhat.com>
Smoke: Gluster Build System <jenkins@build.gluster.org>
Reviewed-by: Ravishankar N <ravishankar@redhat.com>
Reviewed-by: Anuradha Talur <atalur@redhat.com>
Reviewed-by: Pranith Kumar Karampuri <pkarampu@redhat.com>
NetBSD-regression: NetBSD Build System <jenkins@build.gluster.org>
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BUG: 1368451
Change-Id: I5d6b91d714ad6906dc478a401e614115c89a8fbb
Signed-off-by: Pranith Kumar K <pkarampu@redhat.com>
Reviewed-on: http://review.gluster.org/15083
Smoke: Gluster Build System <jenkins@build.gluster.org>
Reviewed-by: Ashish Pandey <aspandey@redhat.com>
NetBSD-regression: NetBSD Build System <jenkins@build.gluster.org>
CentOS-regression: Gluster Build System <jenkins@build.gluster.org>
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Problem:
When tiering/rebalance does migrations and afr with 2-way replica is in
picture, migration can read stale data if the source brick goes down and writes
to the destination. After this deletion of the file leads to permanent loss of
data after migration.
Fix:
Rebalance/tiering should migrate only when the data is definitely not stale. So
introduce an option in afr called consistent-io which will be enabled in
migration daemons.
BUG: 1306398
Change-Id: I750f65091cc70a3ed4bf3c12f83d0949af43920a
Signed-off-by: Pranith Kumar K <pkarampu@redhat.com>
Reviewed-on: http://review.gluster.org/13425
Reviewed-by: Anuradha Talur <atalur@redhat.com>
Reviewed-by: Krutika Dhananjay <kdhananj@redhat.com>
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>
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cyclic order
When the bricks are brought offline and then online in cyclic
order while writes are in progress on a file, thanks to inode
refresh in write txns, AFR will mostly fail the write attempt
when the only good copy is offline. However, there is still a
remote possibility that the file will run into split-brain if
the brick that has the lone good copy goes offline *after* the
inode refresh but *before* the write txn completes (I call it
in-flight split-brain in the patch for ease of reference),
requiring intervention from admin to resolve the split-brain
before the IO can resume normally on the file. To get around this,
the patch does the following things:
i) retains the dirty xattrs on the file
ii) avoids marking the last of the good copies as bad (or accused)
in case it is the one to go down during the course of a write.
iii) fails that particular write with the appropriate errno.
This way, we still have one good copy left despite the split-brain situation
which when it is back online, will be chosen as source to do the heal.
Change-Id: I9ca634b026ac830b172bac076437cc3bf1ae7d8a
BUG: 1363721
Signed-off-by: Krutika Dhananjay <kdhananj@redhat.com>
Reviewed-on: http://review.gluster.org/15080
Tested-by: Pranith Kumar Karampuri <pkarampu@redhat.com>
Smoke: Gluster Build System <jenkins@build.gluster.org>
CentOS-regression: Gluster Build System <jenkins@build.gluster.org>
Reviewed-by: Ravishankar N <ravishankar@redhat.com>
Reviewed-by: Oleksandr Natalenko <oleksandr@natalenko.name>
NetBSD-regression: NetBSD Build System <jenkins@build.gluster.org>
Reviewed-by: Pranith Kumar Karampuri <pkarampu@redhat.com>
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AFR sets transaction.pre_op[] array even before actually doing the
pre-op on-disk. Therefore, AFR must not only consider the pre_op[] array
but also the failed_subvols[] information before setting the pre_op_done[]
flag. This patch fixes that.
Change-Id: I78ccd39106bd4959441821355a82572659e3affb
BUG: 1363721
Signed-off-by: Krutika Dhananjay <kdhananj@redhat.com>
Reviewed-on: http://review.gluster.org/15145
Smoke: Gluster Build System <jenkins@build.gluster.org>
Reviewed-by: Ravishankar N <ravishankar@redhat.com>
Reviewed-by: Pranith Kumar Karampuri <pkarampu@redhat.com>
Reviewed-by: Anuradha Talur <atalur@redhat.com>
CentOS-regression: Gluster Build System <jenkins@build.gluster.org>
NetBSD-regression: NetBSD Build System <jenkins@build.gluster.org>
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...and remove their definitons from EC and AFR.
Also `s/alloca+memset0/alloca0` wherever it is used.
Change-Id: I3b71e596d12a7d8900f5d761af6b98305c8874d5
BUG: 1366226
Signed-off-by: Ravishankar N <ravishankar@redhat.com>
Reviewed-on: http://review.gluster.org/15147
Smoke: Gluster Build System <jenkins@build.gluster.org>
NetBSD-regression: NetBSD Build System <jenkins@build.gluster.org>
Reviewed-by: Pranith Kumar Karampuri <pkarampu@redhat.com>
CentOS-regression: Gluster Build System <jenkins@build.gluster.org>
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Problem:
When io-threads is enabled on the client side, io-threads destroys the
call-stub in which the loc is stored as soon as the c-stack unwinds.
Because afr is creating a syncop with the address of loc passed in
setxattr by the time syncop tries to access it, io-threads would have
already freed the call-stub. This will lead to crash.
Fix:
Copy loc to frame->local and use it's address.
BUG: 1361678
Change-Id: I16987e491e24b0b4e3d868a6968e802e47c77f7a
Signed-off-by: Pranith Kumar K <pkarampu@redhat.com>
Reviewed-on: http://review.gluster.org/15070
Reviewed-by: Ravishankar N <ravishankar@redhat.com>
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>
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