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* afr: prevent winding inodelks twice for arbiter volumesRavishankar N2018-10-121-1/+1
| | | | | | | | | | | | | | | | | | | | | Backport of https://review.gluster.org/#/c/glusterfs/+/21380/ Problem: In an arbiter volume, if there is a pending data heal of a file only on arbiter brick, self-heal takes inodelks twice due to a code-bug but unlocks it only once, leaving behind a stale lock on the brick. This causes the next write to the file to hang. Fix: Fix the code-bug to take lock only once. This bug was introduced master with commit eb472d82a083883335bc494b87ea175ac43471ff Thanks to Pranith Kumar K <pkarampu@redhat.com> for finding the RCA. fixes: bz#1637989 Change-Id: I15ad969e10a6a3c4bd255e2948b6be6dcddc61e1 BUG: 1637989 Signed-off-by: Ravishankar N <ravishankar@redhat.com>
* cluster/afr: Delegate metadata heal with pending xattrs to SHDPranith Kumar K2018-10-123-38/+47
| | | | | | | | | | | | | | | | | | | Problem: When metadata-self-heal is triggered on the mount, it blocks lookup until metadata-self-heal completes. But that can lead to hangs when lot of clients are accessing a directory which needs metadata heal and all of them trigger heals waiting for other clients to complete heal. Fix: Only when the heal is needed but the pending xattrs are not set, trigger metadata heal that could block lookup. This is the only case where different clients may give different metadata to the clients without heals, which should be avoided. Updates bz#1625588 Change-Id: I6089e9fda0770a83fb287941b229c882711f4e66 Signed-off-by: Pranith Kumar K <pkarampu@redhat.com>
* cluster/afr: Delegate name-heal when possiblePranith Kumar K2018-10-122-27/+85
| | | | | | | | | | | | | | | | | | | | | | | | | Problem: When name-self-heal is triggered on the mount, it blocks lookup until name-self-heal completes. But that can lead to hangs when lot of clients are accessing a directory which needs name heal and all of them trigger heals waiting for other clients to complete heal. Fix: When a name-heal is needed but quorum number of names have the file and pending xattrs exist on the parent, then better to delegate the heal to SHD which will be completed as part of entry-heal of the parent directory. We could also do the same for quorum-number of names not present but we don't have any known use-case where this is a frequent occurrence so not changing that part at the moment. When there is a gfid mismatch or missing gfid it is important to complete the heal so that next rename doesn't assume everything is fine and perform a rename etc fixes bz#1625588 Change-Id: I8b002c85dffc6eb6f2833e742684a233daefeb2c Signed-off-by: Pranith Kumar K <pkarampu@redhat.com>
* afr: fix incorrect reporting of directory split-brainRavishankar N2018-10-107-16/+22
| | | | | | | | | | | | | | | | | | | | Backport of https://review.gluster.org/#/c/glusterfs/+/21135/ Problem: When a directory has dirty xattrs due to failed post-ops or when replace/reset brick is performed, AFR does a conservative merge as expected, but heal-info reports it as split-brain because there are no clear sources. Fix: Modify pending flag to contain information about pending heals and split-brains. For directories, if spit-brain flag is not set,just show them as needing heal and not being in split-brain. Fixes: bz#1633625 Change-Id: I09ef821f6887c87d315ae99e6b1de05103cd9383 BUG: 1633625 Signed-off-by: Ravishankar N <ravishankar@redhat.com>
* cluster/afr: Fix dict-leak in pre-opPranith Kumar K2018-08-173-20/+20
| | | | | | | | | | | | | | | | | At the time of pre-op, pre_op_xdata is populted with the xattrs we get from the disk and at the time of post-op it gets over-written without unreffing the previous value stored leading to a leak. This is a regression we missed in https://review.gluster.org/#/q/ba149bac92d169ae2256dbc75202dc9e5d06538e Originally: > Signed-off-by: Pranith Kumar K <pkarampu@redhat.com> > (cherry picked from commit e7b79c59590c203c65f7ac8548b30d068c232d33) Change-Id: I0456f9ad6f77ce6248b747964a037193af3a3da7 Fixes: bz#1613512 Signed-off-by: Amar Tumballi <amarts@redhat.com>
* afr: don't update readables if inode refresh failed on all childrenRavishankar N2018-07-114-21/+52
| | | | | | | | | | | | | | | | | | | | | | | | | | | Backport of: https://review.gluster.org/#/c/20029/ 3.12 still supports quorum-reads, hence modified afr_inode_refresh_done() to support that. If inode refresh failed on all children of afr due to ENOENT (say file migrated by dht), it resets the readables to zero. Any inflight txn which then later comes on the inode fails with EIO because no readable children present for the inode. Fix: Don't update readables when inode refresh fails on *all* children of afr. In that way any inflight txns will either proceed with its own inode refresh if needed and fail it with the right errno or use the old value of readables and continue with the txn. Also, add quorum checks to the beginning of afr_transaction(). Otherwise, we seem to be winding the lock and checking for quorum only in pre-op pahse. Note: This should ideally fix BZ 1329505 since the stop gap fix for it is has been reverted at https://review.gluster.org/#/c/20028. Change-Id: I82990769f01be918a073fec83fc67ba4b3be24b1 BUG: 1599247 Signed-off-by: Ravishankar N <ravishankar@redhat.com>
* afr: heal gfids when file is not present on all bricksRavishankar N2018-07-115-12/+51
| | | | | | | | | | | | | | | Backport of https://review.gluster.org/#/c/20271/ (only change is in .t) commit 20fa80057eb430fd72b4fa31b9b65598b8ec1265 introduced a regression wherein if a file is present in only 1 brick of replica *and* doesn't have a gfid associated with it, it doesn't get healed upon the next lookup from the client. Fix it. Change-Id: I7d1111dcb45b1b8b8340a7d02558f05df70aa599 BUG: 1598121 fixes: bz#1598121 Signed-off-by: Ravishankar N <ravishankar@redhat.com> (cherry picked from commit eb472d82a083883335bc494b87ea175ac43471ff)
* afr: fix bug-1363721.t failureRavishankar N2018-07-093-1/+70
| | | | | | | | | | | | | | | | | | | | | | | Backport of https://review.gluster.org/#/c/20036/ Note: We need to update inode context's write_subvol even in case of compound fops. This is not there in master and 4.1 since compound FOPS was removed in it. Problem: In the .t, when the only good brick was brought down, writes on the fd were still succeeding on the bad bricks. The inflight split-brain check was marking the write as failure but since the write succeeded on all the bad bricks, afr_txn_nothing_failed() was set to true and we were unwinding writev with success to DHT and then catching the failure in post-op in the background. Fix: Don't wind the FOP phase if the write_subvol (which is populated with readable subvols obtained in pre-op cbk) does not have at least 1 good brick which was up when the transaction started. Change-Id: I4a1fef4569609c31cffeaef591a64c10870e8d0b BUG: 1598720 Signed-off-by: Ravishankar N <ravishankar@redhat.com>
* afr: add quorum checks in pre-opRavishankar N2018-07-061-29/+31
| | | | | | | | | | | | | | | | | Backport of https://review.gluster.org/#/c/19781/ 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. Change-Id: Ie58a41e8fa1ad79aa06093706e96db8eef61b6d9 BUG: 1597154 Signed-off-by: Ravishankar N <ravishankar@redhat.com>
* afr: capture the correct errno in post-op quorum checkRavishankar N2018-07-051-8/+8
| | | | | | | | | | If the post-op phase of txn did not meet quorm checks, use that errno to unwind the FOP rather than blindly setting ENOTCONN. Change-Id: I0cb0c8771ec75a45f9a25ad4cd8601103deddf0c BUG: 1597120 Signed-off-by: Ravishankar N <ravishankar@redhat.com> (cherry picked from commit 440a048f24b006c80af3d7bcd0a1f13fe3459d87)
* afr: add quorum checks in post-opRavishankar N2018-07-041-0/+29
| | | | | | | | | | | afr relies on pending changelog xattrs to identify source and sinks and the setting of these xattrs happen in post-op. So if post-op fails, we need to unwind the write txn with a failure. Change-Id: I0f019ac03890108324ee7672883d774918b20be1 BUG: 1597120 Signed-off-by: Ravishankar N <ravishankar@redhat.com> (cherry picked from commit a40a87ec3b226ae86a6ed8f4af25b45965a20cad)
* afr: don't treat all cases all bricks being blamed as split-brainRavishankar N2018-07-042-9/+48
| | | | | | | | | | | | | | | | | | | | | | | | Problem: We currently don't have a roll-back/undoing of post-ops if quorum is not met. Though the FOP is still unwound with failure, the xattrs remain on the disk. Due to these partial post-ops and partial heals (healing only when 2 bricks are up), we can end up in split-brain purely from the afr xattrs point of view i.e each brick is blamed by atleast one of the others. These scenarios are hit when there is frequent connect/disconnect of the client/shd to the bricks while I/O or heal are in progress. Fix: Instead of undoing the post-op, pick a source based on the xattr values. If 2 bricks blame one, the blamed one must be treated as sink. If there is no majority, all are sources. Once we pick a source, self-heal will then do the heal instead of erroring out due to split-brain. Change-Id: I3d0224b883eb0945785ade0e9697a1c828aec0ae BUG: 1597123 Signed-off-by: Ravishankar N <ravishankar@redhat.com> (cherry picked from commit 0e6e8216823c2d9dafb81aae0f6ee3497c23d140)
* cluster/afr: Fixing the flaws in arbiter becoming source patchRavishankar N2018-04-187-179/+276
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Backport of https://review.gluster.org/19045 Problem: Setting the write_subvol value to read_subvol in case of metadata transaction during pre-op (commit 19f9bcff4aada589d4321356c2670ed283f02c03) might lead to the original problem of arbiter becoming source. Scenario: 1) All bricks are up and good 2) 2 writes w1 and w2 are in progress in parallel 3) ctx->read_subvol is good for all the subvolumes 4) w1 succeeds on brick0 and fails on brick1, yet to do post-op on the disk 5) read/lookup comes on the same file and refreshes read_subvols back to all good 6) metadata transaction happens which makes ctx->write_subvol to be assigned with ctx->read_subvol which is all good 7) w2 succeeds on brick1 and fails on brick0 and this will update the brick in reverse order leading to arbiter becoming source Fix: Instead of setting the ctx->write_subvol to ctx->read_subvol in the pre-op statge, if there is a metadata transaction, check in the function __afr_set_in_flight_sb_status() if it is a data/metadata transaction. Use the value of ctx->write_subvol if it is a data transactions and ctx->read_subvol value for other transactions. With this patch we assign the value of ctx->write_subvol in the afr_transaction_perform_fop() with the on disk value, instead of assigning it in the afr_changelog_pre_op() with the in memory value. Change-Id: Id2025a7e965f0578af35b1abaac793b019c43cc4 BUG: 1566131 Signed-off-by: karthik-us <ksubrahm@redhat.com> Signed-off-by: Ravishankar N <ravishankar@redhat.com>
* cluster/afr: Fix for arbiter becoming sourcekarthik-us2018-04-184-6/+102
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Backport of https://review.gluster.org/#/c/18049/ Problem: When eager-lock is on, and two writes happen in parallel on a FD we were observing the following behaviour: - First write fails on one data brick - Since the post-op is not yet happened, the inode refresh will get both the data bricks as readable and set it in the inode context - In flight split brain check see both the data bricks as readable and allows the second write - Second write fails on the other data brick - Now the post-op happens and marks both the data bricks as bad and arbiter will become source for healing Fix: Adding one more variable called write_suvol in inode context and it will have the in memory representation of the writable subvols. Inode refresh will not update this value and its lifetime is pre-op through unlock in the afr transaction. Initially the pre-op will set this value same as read_subvol in inode context and then in the in flight split brain check we will use this value instead of read_subvol. After all the checks we will update the value of this and set the read_subvol same as this to avoid having incorrect value in that. Change-Id: I2ef6904524ab91af861d59690974bbc529ab1af3 BUG: 1566131 Signed-off-by: karthik-us <ksubrahm@redhat.com>
* cluster/afr: Prevent ping-event handling on shdPranith Kumar K2018-04-061-0/+2
| | | | | | | | | | On shd, we shouldn't treat any brick down based on latency, otherwise self-heal will never happen fixes: 1562723 Change-Id: Ica07fcc4fae91a6bfd9c9a670e2be464704d94b7 BUG: 1562723 Signed-off-by: Pranith Kumar K <pkarampu@redhat.com>
* cluster/afr: Fail open on split-brainPranith Kumar K2018-03-0811-95/+208
| | | | | | | | | | | | | | | | | | Problem: Append on a file with split-brain succeeds. Open is intercepted by open-behind, when write comes on the file, open-behind does open+write. Open succeeds because afr doesn't fail it. Then write succeeds because write-behind intercepts it. Flush is also intercepted by write-behind, so the application never gets to know that the write failed. Fix: Fail open on split-brain, so that when open-behind does open+write open fails which leads to write failure. Application will know about this failure. Change-Id: I4bff1c747c97bb2925d6987f4ced5f1ce75dbc15 BUG: 1544635 Signed-off-by: Pranith Kumar K <pkarampu@redhat.com> (cherry picked from commit 786343abca3474ff01aa1017210112d97cbc4843)
* cluster/afr: remove unnecessary child_up initializationXavier Hernandez2018-02-061-7/+0
| | | | | | | | | | | | | | | The child_up array was initialized with all elements being -1 to allow afr_notify() to differentiate down bricks from bricks that haven't reported yet. With current implementation this is not needed anymore and it was causing unexpected results when other parts of the code considered that if child_up[i] != 0, it meant that it was up. Backport of: > BUG: 1541038 Change-Id: I2a9d712ee64c512f24bd5cd3a48dcb37e3139472 BUG: 1541930 Signed-off-by: Xavier Hernandez <jahernan@redhat.com>
* cluster/afr: Honor default timeout of 5min for analyzing split-brain fileskarthik-us2017-11-301-1/+5
| | | | | | | | | | | | | | | | | | | | Problem: After setting split-brain-choice option to analyze the file to resolve the split brain using the command "setfattr -n replica.split-brain-choice -v "choiceX" <path-to-file>" should allow to access the file from mount for default timeout of 5mins. But the timeout was not honored and was able to access the file even after the timeout. Fix: Call the inode_invalidate() in afr_set_split_brain_choice_cbk() so that it will triger the cache invalidate after resetting the timer and the split brain choice. So the next calls to access the file will fail with EIO. Change-Id: I698cb833676b22ff3e4c6daf8b883a0958f51a64 BUG: 1514380 Signed-off-by: karthik-us <ksubrahm@redhat.com> (cherry picked from commit 933ec57ccda2c1ba5ce6f207313c3b6802e67ca3)
* cluster/afr: Make choose-local "reconfigurable"Krutika Dhananjay2017-10-121-0/+11
| | | | | | | | | | | | | | | | Backport of: > Change-Id: Ibab292ba705d993b475cd0303fb3318211fb2500 > Reviewed-on: https://review.gluster.org/18026 > BUG: 1480525 > cherry-picked from commit 1e2d6537875d16b783e3c50ada7ee61487c6d796 With this change, enabling choose-local (which means its state makes transition from "off" to "on") will be effective after the first gfid-lookup on "/" since volume-set was executed. Change-Id: Ibab292ba705d993b475cd0303fb3318211fb2500 BUG: 1501022 Signed-off-by: Krutika Dhananjay <kdhananj@redhat.com>
* afr: heal gfid as a part of entry healRavishankar N2017-10-104-67/+120
| | | | | | | | | | | | | | | | | | | Problem: If a brick crashes after an entry (file or dir) is created but before gfid is assigned, the good bricks will have pending entry heal xattrs but the heal won't complete because afr_selfheal_recreate_entry() tries to create the entry again and it fails with EEXIST. Fix: We could have fixed posx_mknod/mkdir etc to assign the gfid if the file already exists but the right thing to do seems to be to trigger a lookup on the bad brick and let it heal the gfid instead of winding an mknod/mkdir in the first place. (cherry picked from commit 20fa80057eb430fd72b4fa31b9b65598b8ec1265) Change-Id: I82f76665a7541f1893ef8d847b78af6466aff1ff BUG: 1499202 Signed-off-by: Ravishankar N <ravishankar@redhat.com>
* cluster/afr: Sending subvol up/down events when subvol comes up or goes downkarthik-us2017-10-061-0/+2
| | | | | | | | | | > BUG: 1493539 (cherry picked from commit 3bbb4fe4b33dc3a3ed068ed2284077f2a4d8265a) Change-Id: I6580351b245d5f868e9ddc6a4eb4dd6afa3bb6ec BUG: 1492066 Signed-off-by: karthik-us <ksubrahm@redhat.com>
* afr: don't check for file size in afr_mark_source_sinks_if_file_emptyRavishankar N2017-10-051-6/+7
| | | | | | | | | | ... for AFR_METADATA_TRANSACTION and just mark source and sinks if metadata is the same. (cherry picked from commit 24637d54dcbc06de8a7de17c75b9291fcfcfbc84) Change-Id: I69e55d3c842c7636e3538d1b57bc4deca67bed05 BUG: 1496317 Signed-off-by: Ravishankar N <ravishankar@redhat.com>
* afr: auto-resolve split-brains for zero-byte filesRavishankar N2017-10-053-0/+79
| | | | | | | | | | | | | | | | | | | | | | | | | Problems: As described in BZ 1491670, renaming hardlinks can result in data/mdata split-brain of the DHT link-to files (T files) without any mismatch of data and metadata. As described in BZ 1486063, for a zero-byte file with only dirty bits set, arbiter brick will likely be chosen as the source brick. Fix: For zero byte files in split-brain, pick first brick as a) data source if file size is zero on all bricks. b) metadata source if metadata is the same on all bricks In arbiter case, if file size is zero on all bricks and there are no pending afr xattrs, pick 1st brick as data source. (cherry picked from commit 1719cffa911c5287715abfdb991bc8862f0c994e) Change-Id: I0270a9a2f97c3b21087e280bb890159b43975e04 BUG: 1496317 Signed-off-by: Ravishankar N <ravishankar@redhat.com> Reported-by: Rahul Hinduja <rhinduja@redhat.com> Reported-by: Mabi <mabi@protonmail.ch>
* afr: heal metadata in discover code pathRavishankar N2017-09-112-17/+46
| | | | | | | | | | | | | | | | | | | | | | | Combined backport of https://review.gluster.org/17850 and https://review.gluster.org/18187 During graph switch, if fuse sends nameless (gfid) lookups, afr takes the discover code path to serve it. If there are pending metadata heals, they do not happen unless an inode refresh happens as a part of discover (which is not guaranteed to happen always). This patch fixes it by attempting metadata heal as a part of discover, just like how it is done in lookup code path. Change-Id: I87c493045b9225741cad173bf3f645848697032e BUG: 1488168 Signed-off-by: Ravishankar N <ravishankar@redhat.com> Reviewed-on: https://review.gluster.org/18202 Smoke: Gluster Build System <jenkins@build.gluster.org> CentOS-regression: Gluster Build System <jenkins@build.gluster.org> Reviewed-by: Karthik U S <ksubrahm@redhat.com> Reviewed-by: Pranith Kumar Karampuri <pkarampu@redhat.com> Reviewed-by: jiffin tony Thottan <jthottan@redhat.com>
* afr: check validity of afr_replyRavishankar N2017-09-075-47/+71
| | | | | | | | | | | | | | | | | | | | | | | ...in various self-heal code paths. Originally found by Pranith in __afr_selfheal_name_impunge () Also change __afr_selfheal_assign_gfid() to send lookup only on those bricks that don't have a gfid matching that of the source. > Reviewed-on: https://review.gluster.org/18065 > Smoke: Gluster Build System <jenkins@build.gluster.org> > CentOS-regression: Gluster Build System <jenkins@build.gluster.org> (cherry picked from commit d594900dbca92c356152be65fce16f77c402117c) Change-Id: I70a2ccd750a2af92c5fc36e0eefb2b6125404b4a BUG: 1487319 Signed-off-by: Pranith Kumar K <pkarampu@redhat.com> Signed-off-by: Ravishankar N <ravishankar@redhat.com> Reviewed-on: https://review.gluster.org/18173 Smoke: Gluster Build System <jenkins@build.gluster.org> CentOS-regression: Gluster Build System <jenkins@build.gluster.org>
* afr: Prevent null gfids in self-heal entry re-creationRavishankar N2017-08-121-3/+11
| | | | | | | | | | | | | | | | | > Reviewed-on: https://review.gluster.org/17981 > Smoke: Gluster Build System <jenkins@build.gluster.org> > CentOS-regression: Gluster Build System <jenkins@build.gluster.org> > Reviewed-by: Amar Tumballi <amarts@redhat.com> > Reviewed-by: Karthik U S <ksubrahm@redhat.com> (cherry picked from commit bead74a6e085001225bc0704bad1a5db36dd75a1) Change-Id: I5acb8bd0a19fc4e764d61e349bb690b5236ee610 BUG: 1479474 Signed-off-by: Ravishankar N <ravishankar@redhat.com> Reviewed-on: https://review.gluster.org/17997 Smoke: Gluster Build System <jenkins@build.gluster.org> CentOS-regression: Gluster Build System <jenkins@build.gluster.org> Reviewed-by: Shyamsundar Ranganathan <srangana@redhat.com>
* libglusterfs: Name threads on creationRaghavendra Talur2017-07-191-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Set names to threads on creation for easier debugging. Output of top -H -p <PID-OF-GLUSTERFSD> Before: 19773 root 20 0 1301.3m 12.6m 8.4m S 0.0 0.1 0:00.00 glusterfsd 19774 root 20 0 1301.3m 12.6m 8.4m S 0.0 0.1 0:00.00 glusterfsd 19775 root 20 0 1301.3m 12.6m 8.4m S 0.0 0.1 0:00.00 glusterfsd 19776 root 20 0 1301.3m 12.6m 8.4m S 0.0 0.1 0:00.00 glusterfsd 19777 root 20 0 1301.3m 12.6m 8.4m S 0.0 0.1 0:00.00 glusterfsd 19778 root 20 0 1301.3m 12.6m 8.4m S 0.0 0.1 0:00.00 glusterfsd 19779 root 20 0 1301.3m 12.6m 8.4m S 0.0 0.1 0:00.00 glusterfsd 19780 root 20 0 1301.3m 12.6m 8.4m S 0.0 0.1 0:00.00 glusterfsd 19781 root 20 0 1301.3m 12.6m 8.4m S 0.0 0.1 0:00.00 glusterfsd 19782 root 20 0 1301.3m 12.6m 8.4m S 0.0 0.1 0:00.00 glusterfsd 19783 root 20 0 1301.3m 12.6m 8.4m S 0.0 0.1 0:00.00 glusterfsd 19784 root 20 0 1301.3m 12.6m 8.4m S 0.0 0.1 0:00.00 glusterfsd 19785 root 20 0 1301.3m 12.6m 8.4m S 0.0 0.1 0:00.01 glusterfsd 19786 root 20 0 1301.3m 12.6m 8.4m S 0.0 0.1 0:00.01 glusterfsd 19787 root 20 0 1301.3m 12.6m 8.4m S 0.0 0.1 0:00.01 glusterfsd 19789 root 20 0 1301.3m 12.6m 8.4m S 0.0 0.1 0:00.00 glusterfsd 19790 root 20 0 1301.3m 12.6m 8.4m S 0.0 0.1 0:00.00 glusterfsd 25178 root 20 0 1301.3m 12.6m 8.4m S 0.0 0.1 0:00.00 glusterfsd 5398 root 20 0 1301.3m 12.6m 8.4m S 0.0 0.1 0:00.00 glusterfsd 7881 root 20 0 1301.3m 12.6m 8.4m S 0.0 0.1 0:00.00 glusterfsd After: 19773 root 20 0 1301.3m 12.6m 8.4m S 0.0 0.1 0:00.00 glusterfsd 19774 root 20 0 1301.3m 12.6m 8.4m S 0.0 0.1 0:00.00 glustertimer 19775 root 20 0 1301.3m 12.6m 8.4m S 0.0 0.1 0:00.00 glusterfsd 19776 root 20 0 1301.3m 12.6m 8.4m S 0.0 0.1 0:00.00 glustermemsweep 19777 root 20 0 1301.3m 12.6m 8.4m S 0.0 0.1 0:00.00 glustersproc0 19778 root 20 0 1301.3m 12.6m 8.4m S 0.0 0.1 0:00.00 glustersproc1 19779 root 20 0 1301.3m 12.6m 8.4m S 0.0 0.1 0:00.00 glusterepoll0 19780 root 20 0 1301.3m 12.6m 8.4m S 0.0 0.1 0:00.00 glusteridxwrker 19781 root 20 0 1301.3m 12.6m 8.4m S 0.0 0.1 0:00.00 glusteriotwr0 19782 root 20 0 1301.3m 12.6m 8.4m S 0.0 0.1 0:00.00 glusterbrssign 19783 root 20 0 1301.3m 12.6m 8.4m S 0.0 0.1 0:00.00 glusterbrswrker 19784 root 20 0 1301.3m 12.6m 8.4m S 0.0 0.1 0:00.00 glusterclogecon 19785 root 20 0 1301.3m 12.6m 8.4m S 0.0 0.1 0:00.01 glusterclogd0 19786 root 20 0 1301.3m 12.6m 8.4m S 0.0 0.1 0:00.01 glusterclogd1 19787 root 20 0 1301.3m 12.6m 8.4m S 0.0 0.1 0:00.01 glusterclogd2 19789 root 20 0 1301.3m 12.6m 8.4m S 0.0 0.1 0:00.00 glusterposixjan 19790 root 20 0 1301.3m 12.6m 8.4m S 0.0 0.1 0:00.00 glusterposixfsy 25178 root 20 0 1301.3m 12.6m 8.4m S 0.0 0.1 0:00.00 glusterepoll1 5398 root 20 0 1301.3m 12.6m 8.4m S 0.0 0.1 0:00.00 glusterepoll2 7881 root 20 0 1301.3m 12.6m 8.4m S 0.0 0.1 0:00.00 glusterposixhc Change-Id: Id5f333755c1ba168a2ffaa4fce6e71c375e10703 BUG: 1254002 Updates: #271 Signed-off-by: Raghavendra Talur <rtalur@redhat.com> Reviewed-on: https://review.gluster.org/11926 Reviewed-by: Prashanth Pai <ppai@redhat.com> Smoke: Gluster Build System <jenkins@build.gluster.org> Reviewed-by: Niels de Vos <ndevos@redhat.com> CentOS-regression: Gluster Build System <jenkins@build.gluster.org>
* cluster/afr: GFID split-brain resolution with existing CLIkarthik-us2017-07-186-135/+315
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Problem: Currently there is no way for the admin from CLI to resolve gfid split-brain based on some policy like choice of the brick, mtime or size. Fix: With the existing CLI options based on size, mtime, and choice of brick, we do lookup on the parent for the specified file. As part of the lookup, if we find gfid mismatch, we resolve them based on the policy and return. If the file is not in gfid split- brain, then we check for the data and metadata split-brain in the getxattr code path, and resolve if any. This will work provided absolute path to the file with the CLI and not with gfid of the file. Hence the source-brick policy without any file path will also not resolve the gfid split-brain since it uses the gfid of the files. But it can resolve any other type of split-brains and skip the gfid mismatch resolution with the usual error message. Reverting the change https://review.gluster.org/17290. This patch resolves the issue. Fixes gluster/glusterfs#135 Change-Id: Iaeba6fc32f184a34255d03be87cda02773130a09 BUG: 1459530 Signed-off-by: karthik-us <ksubrahm@redhat.com> Reviewed-on: https://review.gluster.org/17485 Reviewed-by: Ravishankar N <ravishankar@redhat.com> Reviewed-by: Pranith Kumar Karampuri <pkarampu@redhat.com> CentOS-regression: Gluster Build System <jenkins@build.gluster.org> Smoke: Gluster Build System <jenkins@build.gluster.org>
* afr: mark non sources as sinks in metadata healRavishankar N2017-07-132-3/+5
| | | | | | | | | | | | | | | | | | Problem: In a 3 way replica, when the source brick does not have pending xattrs for the sinks, but the 2 sinks blame each other, metadata heal was not happpening because we were not setting all non-sources as sinks. Fix: Mark all non-sources as sinks, like it is done in data and entry heal. Change-Id: I534978940f5087302e307fcc810a48ffe898ce08 BUG: 1468279 Signed-off-by: Ravishankar N <ravishankar@redhat.com> Reviewed-on: https://review.gluster.org/17717 Smoke: Gluster Build System <jenkins@build.gluster.org> Reviewed-by: Pranith Kumar Karampuri <pkarampu@redhat.com> CentOS-regression: Gluster Build System <jenkins@build.gluster.org>
* cluster/afr: Returning single and list of node uuids from AFRkarthik-us2017-06-201-9/+79
| | | | | | | | | | | | | | | | | | | | | | | | Problem: The change in afr to return list of node uuids was causing problems with geo-rep. Fix: This patch will allow to get the single node uuid as it was doing before with the key "GF_XATTR_NODE_UUID_KEY", and will also allow to get the list of node uuids by using a new key "GF_XATTR_LIST_NODE_UUIDS_KEY". This will solve the problem with geo-rep and any other feature which were depending on this. Change-Id: I09885dac6dfca127be94b708470c8c2941356f9a BUG: 1462790 Signed-off-by: karthik-us <ksubrahm@redhat.com> Reviewed-on: https://review.gluster.org/17576 Smoke: Gluster Build System <jenkins@build.gluster.org> Reviewed-by: Ravishankar N <ravishankar@redhat.com> Reviewed-by: Kotresh HR <khiremat@redhat.com> NetBSD-regression: NetBSD Build System <jenkins@build.gluster.org> CentOS-regression: Gluster Build System <jenkins@build.gluster.org> Reviewed-by: Jeff Darcy <jeff@pl.atyp.us>
* cluster/afr: Implement quorum for lk fopPranith Kumar K2017-06-192-23/+38
| | | | | | | | | | | | | | | | | | | Problem: At the moment when we have replica 3 or arbiter setup, even when lk succeeds on just one brick we give success to application which is wrong Fix: Consider quorum-number of successes as success when quorum is enabled. BUG: 1461792 Change-Id: I5789e6eb5defb68f8a0eb9cd594d316f5cdebaea Signed-off-by: Pranith Kumar K <pkarampu@redhat.com> Reviewed-on: https://review.gluster.org/17524 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>
* afr: update errno check in afr_inode_refresh_doRavishankar N2017-06-051-1/+1
| | | | | | | | | | | | | Addresses review comment in https://review.gluster.org/#/c/17413 Change-Id: Ic247729e5e92a5bb0148543764e0b30790444004 BUG: 1456582 Signed-off-by: Ravishankar N <ravishankar@redhat.com> Reviewed-on: https://review.gluster.org/17436 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>
* afr: add errno to afr_inode_refresh_done()Ravishankar N2017-05-311-7/+16
| | | | | | | | | | | | | | | | | | | | | | | | | Problem: When parellel `rm -rf`s were being done from cifs clients, opendir might fail on some replicas with ENOENT. DHT ignores partial opendir failures in dht_fd_cbk() and winds readdirs on those replicas. Afr inode refresh (as a part of readdirp read_txn) sees in its fd context that the state of the fds is *not* AFR_FD_OPENED and bails out to afr_inode_refresh_done() without doing a refresh. When this happens, the errno is set as EIO due to lack of readable subvols, logging split-brain messages in the logs. Fix: Introduce an errno argument to afr_inode_refresh_do() to bail out with the right error value when inode refresh is not performed. Change-Id: I075707fbb73fd93a923b77b923a96aac79e847f9 BUG: 1456582 Signed-off-by: Ravishankar N <ravishankar@redhat.com> Reviewed-on: https://review.gluster.org/17413 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>
* cluster/afr: Remove debug logs in fix_quorum_options()Vijay Bellur2017-05-191-5/+0
| | | | | | | | | | | Change-Id: Id019b0c6425849eece8a9aba7acec9a521dfb10b BUG: 1452378 Signed-off-by: Vijay Bellur <vbellur@redhat.com> Reviewed-on: https://review.gluster.org/17335 Smoke: Gluster Build System <jenkins@build.gluster.org> NetBSD-regression: NetBSD Build System <jenkins@build.gluster.org> Reviewed-by: Jeff Darcy <jeff@pl.atyp.us> CentOS-regression: Gluster Build System <jenkins@build.gluster.org>
* cluster/afr: Return the list of node_uuids for the subvolumekarthik-us2017-05-173-50/+145
| | | | | | | | | | | | | | | | | | | | | | | | Problem: AFR was returning the node uuid of the first node for every file if the replica set was healthy, which was resulting in only one node migrating all the files. Fix: With this patch AFR returns the list of node_uuids to the upper layer, so that they can decide on which node to migrate which files, resulting in improved performance. Ordering of node uuids will be maintained based on the ordering of the bricks. If a brick is down, then the node uuid for that will be set to all zeros. Change-Id: I73ee0f9898ae473584fdf487a2980d7a6db22f31 BUG: 1366817 Signed-off-by: karthik-us <ksubrahm@redhat.com> Reviewed-on: https://review.gluster.org/17084 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>
* afr: propagate correct errno for fop failures in arbiterRavishankar N2017-05-154-15/+12
| | | | | | | | | | | | | | | | | | | | | | | Problem: If quorum is not met in fop cbk, arbiter sends an ENOTCONN error to the upper xlators. In a VM workload with sharding enabled, this was leading to the VM pausing when replace-brick was performed as described in the BZ. Fix: Move the fop cbk arbitration logic to afr_handle_quorum() because in normal replica volumes, that is the function that has the quorum and errno checks in the fop cbk path before doing a post-op. Thanks to Pranith for suggesting this approach. Change-Id: Ie6315db30c5e36326b71b90a01da824109e86796 BUG: 1449610 Signed-off-by: Ravishankar N <ravishankar@redhat.com> Reviewed-on: https://review.gluster.org/17235 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>
* afr: send the correct iatt values in fsync cbkRavishankar N2017-05-111-25/+43
| | | | | | | | | | | | | | | | | | | | | | | | Problem: afr unwinds the fsync fop with an iatt buffer from one of its children on whom fsync was successful. But that child might not be a valid read subvolume for that inode because of pending heals or because it happens to be the arbiter brick etc. Thus we end up sending the wrong iatt to mdcache which will in turn serve it to the application on a subsequent stat call as reported in the BZ. Fix: Pick a child on whom the fsync was successful *and* that is readable as indicated in the inode context. Change-Id: Ie8647289219cebe02dde4727e19a729b3353ebcf BUG: 1449329 RCA'ed-by: Miklós Fokin <miklos.fokin@appeartv.com> Signed-off-by: Ravishankar N <ravishankar@redhat.com> Reviewed-on: https://review.gluster.org/17227 CentOS-regression: Gluster Build System <jenkins@build.gluster.org> Reviewed-by: Pranith Kumar Karampuri <pkarampu@redhat.com> NetBSD-regression: NetBSD Build System <jenkins@build.gluster.org> Smoke: Gluster Build System <jenkins@build.gluster.org>
* afr: fixes to quorum-type in afr_priv_dump()Ravishankar N2017-05-101-0/+2
| | | | | | | | | | | | | | | | | | Include the 'none' option as well in the output. This fixes the bug in commit 335555d256d444f4952ce239168f72b393370f01. Also added a test-case. This is a Signed-off-by: Ravishankar N <ravishankar@redhat.com> Change-Id: I479a14ae69ecae5a03e85e73ed50c19b483df603 BUG: 1448804 Reviewed-on: https://review.gluster.org/17215 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>
* afr: include quorum type and count when dumping afr privRavishankar N2017-05-081-0/+6
| | | | | | | | | | | | | | | | Dump the client quorum type ('auto' or 'fixed'). If it is 'fixed', also dump the quorum-count. This information will be available in the client statedump and in /<fuse_mount>/.meta/graphs/active/testvol-replicate-X/private. Change-Id: Idbd6e2acbd622d4e6cfabf511e649a6da0e42384 BUG: 1448804 Signed-off-by: Ravishankar N <ravishankar@redhat.com> Reviewed-on: https://review.gluster.org/17196 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>
* Halo Replication feature for AFR translatorKevin Vigor2017-05-025-58/+422
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Summary: Halo Geo-replication is a feature which allows Gluster or NFS clients to write locally to their region (as defined by a latency "halo" or threshold if you like), and have their writes asynchronously propagate from their origin to the rest of the cluster. Clients can also write synchronously to the cluster simply by specifying a halo-latency which is very large (e.g. 10seconds) which will include all bricks. In other words, it allows clients to decide at mount time if they desire synchronous or asynchronous IO into a cluster and the cluster can support both of these modes to any number of clients simultaneously. There are a few new volume options due to this feature: halo-shd-latency: The threshold below which self-heal daemons will consider children (bricks) connected. halo-nfsd-latency: The threshold below which NFS daemons will consider children (bricks) connected. halo-latency: The threshold below which all other clients will consider children (bricks) connected. halo-min-replicas: The minimum number of replicas which are to be enforced regardless of latency specified in the above 3 options. If the number of children falls below this threshold the next best (chosen by latency) shall be swapped in. New FUSE mount options: halo-latency & halo-min-replicas: As descripted above. This feature combined with multi-threaded SHD support (D1271745) results in some pretty cool geo-replication possibilities. Operational Notes: - Global consistency is gaurenteed for synchronous clients, this is provided by the existing entry-locking mechanism. - Asynchronous clients on the other hand and merely consistent to their region. Writes & deletes will be protected via entry-locks as usual preventing concurrent writes into files which are undergoing replication. Read operations on the other hand should never block. - Writes are allowed from _any_ region and propagated from the origin to all other regions. The take away from this is care should be taken to ensure multiple writers do not write the same files resulting in a gfid split-brain which will require resolution via split-brain policies (majority, mtime & size). Recommended method for preventing this is using the nfs-auth feature to define which region for each share has RW permissions, tiers not in the origin region should have RO perms. TODO: - Synchronous clients (including the SHD) should choose clients from their own region as preferred sources for reads. Most of the plumbing is in place for this via the child_latency array. - Better GFID split brain handling & better dent type split brain handling (i.e. create a trash can and move the offending files into it). - Tagging in addition to latency as a means of defining which children you wish to synchronously write to Test Plan: - The usual suspects, clang, gcc w/ address sanitizer & valgrind - Prove tests Reviewers: jackl, dph, cjh, meyering Reviewed By: meyering Subscribers: ethanr Differential Revision: https://phabricator.fb.com/D1272053 Tasks: 4117827 Change-Id: I694a9ab429722da538da171ec528406e77b5e6d1 BUG: 1428061 Signed-off-by: Kevin Vigor <kvigor@fb.com> Reviewed-on: http://review.gluster.org/16099 Reviewed-on: https://review.gluster.org/16177 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>
* cluster/afr: GFID split brain resolution with favorite-child-policykarthik-us2017-04-202-45/+162
| | | | | | | | | | | | | | | | | | | | | | | | | Problem: Currently the automatic split brain resolution with favorite child policy is not resolving the GFID split brains. Fix: When there is a GFID split brain and the favorite child policy is set to size/mtime/ctime/majority, based on the policy decide on the source and sinks. Delete the entry from the sinks and recreate it from the source. Mark the appropriate pending attributes and resolve the GFID split brain. When the heal takes place it will complete the pending heals and reset the attributes. Change-Id: Ie30e5373f94ca6f276745d9c3ad662b8acca6946 BUG: 1430719 Signed-off-by: karthik-us <ksubrahm@redhat.com> Reviewed-on: https://review.gluster.org/16878 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> Reviewed-by: Ravishankar N <ravishankar@redhat.com> CentOS-regression: Gluster Build System <jenkins@build.gluster.org>
* afr: don't do a post-op on a brick if op failedRavishankar N2017-04-181-6/+15
| | | | | | | | | | | | | | | | | | | | | | | | | | Problem: In afr-v2, self-blaming xattrs are not there by design. But if the FOP failed on a brick due to an error other than ENOTCONN (or even due to ENOTCONN, but we regained connection before postop was wound), we wind the post-op also on the failed brick, leading to setting self-blaming xattrs on that brick. This can lead to undesired results like healing of files in split-brain etc. Fix: If a fop failed on a brick on which pre-op was successful, do not perform post-op on it. This also produces the desired effect of not resetting the dirty xattr on the brick, which is how it should be because if the fop failed on a brick, there is no reason to clear the dirty bit which actually serves as an indication of the failure. Change-Id: I5f1caf4d1b39f36cf8093ccef940118638caa9c4 BUG: 1438255 Signed-off-by: Ravishankar N <ravishankar@redhat.com> Reviewed-on: https://review.gluster.org/16976 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>
* syncop: don't wake task in synctask_wake unless really neededRavishankar N2017-03-281-8/+16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Problem: In EC and AFR, we launch synctasks during self-heal. (i) These tasks usually stackwind a FOP to all its children and call synctask_yield() which does a swapcontext to synctask_switchto() and puts the task in syncenv's waitq by calling __wait(task). This happends as long as the FOP ckbs from all children haven't been received. (ii) For each FOP cbk, we call synctask_wake() which again does a swapcontext to synctask_switchto() which now puts the task in syncenv's runq by calling __run(task). When the task runs and the conext switches back to the FOP path, it puts the task in waitq because we haven't heard from all children as explained in (i). Thus we are unnecessarily using the swapcontext syscalls to just toggle the task back and forth between the waitq and runq. Fix: Store the stackwind count in new variable 'syncbarrier->waitfor' before winding the fop. In each cbk when we call synctask_wake(), perform an actual wake only if the cbk count == stackwind count. Change-Id: Id62d3b6ffed5a8c50f8b79267fb34e9470ba5ed5 BUG: 1434274 Signed-off-by: Ravishankar N <ravishankar@redhat.com> Signed-off-by: Ashish Pandey <aspandey@redhat.com> Reviewed-on: https://review.gluster.org/16931 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> Reviewed-by: Pranith Kumar Karampuri <pkarampu@redhat.com>
* cluster/afr: Undo pending xattrs only on the up brickskarthik-us2017-03-271-1/+1
| | | | | | | | | | | | | | | | | | | | | Problem: While doing conservative merge, even if a brick is down, it will reset the pending xattr on that. When that brick comes up, as part of the heal, it will consider this brick as the source and removes the entries on the other bricks, which leads to data loss. Fix: Undo pending only for the bricks which are up. Change-Id: I18436fa0bb1faa5f60531b357dea3f6b20446303 BUG: 1433571 Signed-off-by: karthik-us <ksubrahm@redhat.com> Reviewed-on: https://review.gluster.org/16913 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> Reviewed-by: Ravishankar N <ravishankar@redhat.com>
* afr: do not mention split-brain in log message in read_txnRavishankar N2017-03-201-3/+2
| | | | | | | | | | | | | | | | | | | | | | | | I am seeing a lot of messages in qe/customer logs where read_txn complains that file is possibly in split-brain because of no readable subvol being found, does inode refresh and then there is no split-brain message post the inode refresh. This means that a lookup was not issued on the indoe to populate 'readable' or it can mean one brick is source for data and the other for metadata, making readable to be zero (because readable=intersection of (data,metadata readable) since commit 7a1c1e290470149696. Since we anyway log actual split-brains post inode-refresh, move this message to DEBUG log level. Change-Id: Idb88b8ea362515279dc9b246f06b6b646c6d8013 BUG: 1433838 Signed-off-by: Ravishankar N <ravishankar@redhat.com> Reviewed-on: https://review.gluster.org/16879 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>
* afr: restore atime/mtime for non-regular filesRavishankar N2017-03-064-51/+64
| | | | | | | | | | | | | | | | | | | 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>
* cluster/afr: Perform new entry mark before creating new entryPranith Kumar K2017-02-164-54/+51
| | | | | | | | | | | | | | | | | | | 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>
* afr: all children of AFR must be up to resolve s-brainRavishankar N2017-02-093-15/+61
| | | | | | | | | | | | | | | | | | | | | | | | 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>
* afr/cluster: Restore data-self-heal-window optionRichard Wareing2017-02-081-1/+3
| | | | | | | | | | | | | | | | | | | | | | | | | 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>
* core: run many bricks within one glusterfsd processJeff Darcy2017-01-301-0/+7
| | | | | | | | | | | | | | | | | | | | | | | 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>
generated by cgit (git 2.34.1) at 2025-07-11 11:09:56 +0000