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* glusterd: delete source brick only once in reset-brick commit forceAtin Mukherjee2017-10-311-0/+24
| | | | | | | | | | | While stopping the brick which is to be reset and replaced delete_brick flag was passed as true which resulted glusterd to free up to source brick before the actual operation. This results commit force to fail failing to find the source brickinfo. Change-Id: I1aa7508eff7cc9c9b5d6f5163f3bb92736d6df44 BUG: 1507466 Signed-off-by: Atin Mukherjee <amukherj@redhat.com>
* tests: Update tier CLI in .t filesN Balachandran2017-10-306-7/+7
| | | | | | | | Update .t tier tests to use the new tier CLI. Change-Id: I0e7f1769071108d8266fc86378c4466bcaf96e7d BUG: 1505253 Signed-off-by: N Balachandran <nbalacha@redhat.com>
* cluster/afr: Fail open on split-brainPranith Kumar K2017-10-261-0/+1
| | | | | | | | | | | | | | | | | 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: 1294051 Signed-off-by: Pranith Kumar K <pkarampu@redhat.com>
* snapshot: Issue with other processes accessing the mounted brickSunny Kumar2017-10-232-0/+115
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Added code for unmount of activated snapshot brick during snapshot deactivation process which make sense as mount point for deactivated bricks should not exist. Removed code for mounting newly created snapshot, as newly created snapshots should not mount until it is activated. Added code for mount point creation and snapshot mount during snapshot activation. Added validation during glusterd init for mounting only those snapshot whose status is either STARTED or RESTORED. During snapshot restore, mount point for stopped snap should exist as it is required to set extended attribute. During handshake, after getting updates from friend mount point for activated snapshot should exist and should not for deactivated snapshot. While getting snap status we should show relevent information for deactivated snapshots, after this pathch 'gluster snap status' command will show output like- Snap Name : snap1 Snap UUID : snap-uuid Brick Path : server1:/run/gluster/snaps/snap-vol-name/brick Volume Group : N/A (Deactivated Snapshot) Brick Running : No Brick PID : N/A Data Percentage : N/A LV Size : N/A Fixes: #276 Change-Id: I65783488e35fac43632615ce1b8ff7b8e84834dc BUG: 1482023 Signed-off-by: Sunny Kumar <sunkumar@redhat.com>
* glusterd:Marking all the brick status as stopped when a process goes down in ↵Sanju Rakonde2017-10-121-0/+27
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | brick multiplexing In brick multiplexing environment, if a brick process goes down i.e., if we kill it with SIGKILL, the status of the brick for which the process came up for the first time is only changing to stopped. all other brick statuses are remain started. This is happening because the process was killed abruptly using SIGKILL signal and signal handler wasn't invoked and further cleanup wasn't triggered. When we try to start a volume using force, it shows error saying "Request timed out", since all the brickinfo->status are still in started state, we're waiting for one of the brick process to come up which never going to happen since the brick process was killed. To resolve this, In the disconnect event, We are checking all the processes that whether the brick which got disconnected belongs the process. Once we get the process we are calling a function named glusterd_mark_bricks_stopped_by_proc() and sending brick_proc_t object as an argument. From the glusterd_brick_proc_t we can get all the bricks attached to that process. but these are duplicated ones. To get the original brickinfo we are reading volinfo from brick. In volinfo we will have original brickinfo copies. We are changing brickinfo->status to stopped for all the bricks. Change-Id: Ifb9054b3ee081ef56b39b2903ae686984fe827e7 BUG: 1499509 Signed-off-by: Sanju Rakonde <srakonde@redhat.com>
* test: Mark test case ./tests/bugs/bug-1371806_1.t as a bad test caseMohit Agrawal2017-10-091-1/+2
| | | | | | | | | | Problem: Test case ./tests/bugs/bug-1371806_1.t is failing. Solution: Mark test case ./tests/bugs/bug-1371806_1.t as a bad test case. BUG: 1499663 Change-Id: Icb3f41d23dcc74cce6fde05ca343c158d5f58cdd Signed-off-by: Mohit Agrawal <moagrawa@redhat.com>
* glusterd : fix client io-threads option for replicate volumesRavishankar N2017-10-091-0/+48
| | | | | | | | | | | | | | | | | | | Problem: Commit ff075a3d6f9b142911d25c27fd209838782bfff0 disabled loading client-io-threads for replicate volumes (it was set to on by default in commit e068c1997314046658dd502e9118dab32decf879) due to performance issues but in doing so, inadvertently failed to load the xlator even if the user explicitly enabled the option using the volume set command. This was despite returning returning sucess for the volume set. Fix: Modify the check in perfxl_option_handler() and add checks in volume create/add-brick/remove-brick code paths, tying it all to GD_OP_VERSION_3_12_2. Change-Id: Ib612973a999a7da818cc926f5c2601b1f0794fcf BUG: 1498570 Signed-off-by: Ravishankar N <ravishankar@redhat.com>
* afr: heal gfid as a part of entry healRavishankar N2017-10-091-0/+68
| | | | | | | | | | | | | | | | | | 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. Change-Id: I82f76665a7541f1893ef8d847b78af6466aff1ff BUG: 1493415 Signed-off-by: Ravishankar N <ravishankar@redhat.com>
* cluster/dht : User xattrs are not healed after brick stop/startMohit Agrawal2017-10-047-19/+352
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Problem: In a distributed volume custom extended attribute value for a directory does not display correct value after stop/start or added newly brick. If any extended(acl) attribute value is set for a directory after stop/added the brick the attribute(user|acl|quota) value is not updated on brick after start the brick. Solution: First store hashed subvol or subvol(has internal xattr) on inode ctx and consider it as a MDS subvol.At the time of update custom xattr (user,quota,acl, selinux) on directory first check the mds from inode ctx, if mds is not present on inode ctx then throw EINVAL error to application otherwise set xattr on MDS subvol with internal xattr value of -1 and then try to update the attribute on other non MDS volumes also.If mds subvol is down in that case throw an error "Transport endpoint is not connected". In dht_dir_lookup_cbk| dht_revalidate_cbk|dht_discover_complete call dht_call_dir_xattr_heal to heal custom extended attribute. In case of gnfs server if hashed subvol has not found based on loc then wind a call on all subvol to update xattr. Fix: 1) Save MDS subvol on inode ctx 2) Check if mds subvol is present on inode ctx 3) If mds subvol is down then call unwind with error ENOTCONN and if it is up then set new xattr "GF_DHT_XATTR_MDS" to -1 and wind a call on other subvol. 4) If setxattr fop is successful on non-mds subvol then increment the value of internal xattr to +1 5) At the time of directory_lookup check the value of new xattr GF_DHT_XATTR_MDS 6) If value is not 0 in dht_lookup_dir_cbk(other cbk) functions then call heal function to heal user xattr 7) syncop_setxattr on hashed_subvol to reset the value of xattr to 0 if heal is successful on all subvol. Test : To reproduce the issue followed below steps 1) Create a distributed volume and create mount point 2) Create some directory from mount point mkdir tmp{1..5} 3) Kill any one brick from the volume 4) Set extended attribute from mount point on directory setfattr -n user.foo -v "abc" ./tmp{1..5} It will throw error " Transport End point is not connected " for those hashed subvol is down 5) Start volume with force option to start brick process 6) Execute getfattr command on mount point for directory 7) Check extended attribute on brick getfattr -n user.foo <volume-location>/tmp{1..5} It shows correct value for directories for those xattr fop were executed successfully. Note: The patch will resolve xattr healing problem only for fuse mount not for nfs mount. BUG: 1371806 Signed-off-by: Mohit Agrawal <moagrawa@redhat.com> Change-Id: I4eb137eace24a8cb796712b742f1d177a65343d5
* cluster/afr: Make choose-local "reconfigurable"Krutika Dhananjay2017-09-301-0/+18
| | | | | | | | | | 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: 1480525 Signed-off-by: Krutika Dhananjay <kdhananj@redhat.com>
* afr: auto-resolve split-brains for zero-byte filesRavishankar N2017-09-261-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | 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. Change-Id: I0270a9a2f97c3b21087e280bb890159b43975e04 BUG: 1491670 Signed-off-by: Ravishankar N <ravishankar@redhat.com> Reported-by: Rahul Hinduja <rhinduja@redhat.com> Reported-by: Mabi <mabi@protonmail.ch>
* mount/fuse: Make event-history feature configurableKrutika Dhananjay2017-09-241-1/+1
| | | | | | | | | | | | | | | | | | | | | | ... and disable it by default. This is because having it disabled seems to improve performance. This could be due to the lock contention by the different epoll threads on the circular buff lock in the fop cbks just before writing their response to /dev/fuse. Just to provide some data - wrt ovirt-gluster hyperconverged environment, I saw an increase in IOPs by 12K with event-history disabled for randrom read workload. Usage: mount -t glusterfs -o event-history=on $HOSTNAME:$VOLNAME $MOUNTPOINT OR glusterfs --event-history=on --volfile-server=$HOSTNAME --volfile-id=$VOLNAME $MOUNTPOINT Change-Id: Ia533788d309c78688a315dc8cd04d30fad9e9485 BUG: 1467614 Signed-off-by: Krutika Dhananjay <kdhananj@redhat.com>
* glusterd: disallow replace brick for dist only volumesAtin Mukherjee2017-09-194-17/+17
| | | | | | | | | | | | | | | | | | Allowing replace-brick on dist only volumes will lead to data loss. This patch blocks replace brick commit force to fail if a volume is dist only. Also removing tests/basic/pump.t as its of no use as per the discussion in http://lists.gluster.org/pipermail/gluster-devel/2017-September/053652.html Change-Id: Iabb0c16f865f3fc361b64a19bfcf0c0fbb5c2682 BUG: 1489432 Signed-off-by: Atin Mukherjee <amukherj@redhat.com> Reviewed-on: https://review.gluster.org/18226 Smoke: Gluster Build System <jenkins@build.gluster.org> Reviewed-by: N Balachandran <nbalacha@redhat.com> CentOS-regression: Gluster Build System <jenkins@build.gluster.org>
* features/shard: Change default shard-block-size to 64MBKrutika Dhananjay2017-09-146-0/+7
| | | | | | | | | | | Change-Id: I55fa87e07136cff10b0d725ee24dd3151016e64e BUG: 1489823 Signed-off-by: Krutika Dhananjay <kdhananj@redhat.com> Reviewed-on: https://review.gluster.org/18243 Reviewed-by: Pranith Kumar Karampuri <pkarampu@redhat.com> Smoke: Gluster Build System <jenkins@build.gluster.org> Tested-by: Sunil Kumar Acharya <sheggodu@redhat.com> CentOS-regression: Gluster Build System <jenkins@build.gluster.org>
* features/shard: Return aggregated size in stbuf of LINK fopKrutika Dhananjay2017-09-061-0/+25
| | | | | | | | | | Change-Id: I42df7679d63fec9b4c03b8dbc66c5625f097fac0 BUG: 1488546 Signed-off-by: Krutika Dhananjay <kdhananj@redhat.com> Reviewed-on: https://review.gluster.org/18209 Smoke: Gluster Build System <jenkins@build.gluster.org> CentOS-regression: Gluster Build System <jenkins@build.gluster.org> Reviewed-by: Pranith Kumar Karampuri <pkarampu@redhat.com>
* feature/posix: Enabled gfid2path by defaultKotresh HR2017-08-291-1/+1
| | | | | | | | | | | | | | | | Enable gfid2path feature by default. The basic performance tests are carried out and it doesn't show significant depreciation. The results are updated in issue. Updates: #139 Change-Id: I5f1949a608d0827018ef9d548d5d69f3bb7744fd Signed-off-by: Kotresh HR <khiremat@redhat.com> Reviewed-on: https://review.gluster.org/17950 Smoke: Gluster Build System <jenkins@build.gluster.org> CentOS-regression: Gluster Build System <jenkins@build.gluster.org> Reviewed-by: Aravinda VK <avishwan@redhat.com> Reviewed-by: Amar Tumballi <amarts@redhat.com>
* glusterd: glusterd fails to start if peers file has blank lineGaurav Yadav2017-08-241-0/+29
| | | | | | | | | | | | | | | | | | | | | | | Problem: On start of glusterd service, glusterd fetch data from store, while parsing data from store if peers file consists of blank line glusterd fails to start. Fix: With this fix while parsing peers file glusterd will skip blank lines if it contains any. Signed-off-by: Gaurav Yadav <gyadav@redhat.com> Change-Id: I53cd65a54de5f57baef292b2118b70ffb7f99388 BUG: 1482906 Reviewed-on: https://review.gluster.org/18066 Tested-by: Gaurav Yadav <gyadav@redhat.com> Smoke: Gluster Build System <jenkins@build.gluster.org> Reviewed-by: Prashanth Pai <ppai@redhat.com> CentOS-regression: Gluster Build System <jenkins@build.gluster.org> Reviewed-by: Atin Mukherjee <amukherj@redhat.com> Reviewed-by: Niels de Vos <ndevos@redhat.com>
* glusterd: do not create .glusterfs/indicesPrashanth Pai2017-08-233-6/+3
| | | | | | | | | | | | | | | | | | | | | glusterd shouldn't concern itself with creating directories specific to certain xlators. The index xlator will now proceed creating './glusterfs/indices' dir only if the parent '.glusterfs' directory exists, which still fixes the original problem reported i.e 'volume start force' command shouldn't create brick path if it doesn't exist (BUG 1457202) This reverts most of the changes done by the commit b58a15948fb3fc37b6c0b70171482f50ed957f42 Change-Id: I7fc52ad64dce220e336c218fb4d85933ca2e61c0 Signed-off-by: Prashanth Pai <ppai@redhat.com> Reviewed-on: https://review.gluster.org/18003 Smoke: Gluster Build System <jenkins@build.gluster.org> CentOS-regression: Gluster Build System <jenkins@build.gluster.org> Reviewed-by: Jeff Darcy <jeff@pl.atyp.us> Reviewed-by: Pranith Kumar Karampuri <pkarampu@redhat.com>
* glusterd: replace-brick executing successfully when quorum does not metGaurav Yadav2017-08-221-0/+51
| | | | | | | | | | | | | | | | | | Problem: replace-brick command on a setup where quorum does not met executing successfully. Fix: With the fix glusterd is validating whether server is in quorum or not during replace-brick staging Change-Id: I8017154bb62bdcc6c6490e720ecfe9cde090c161 BUG: 1483058 Signed-off-by: Gaurav Yadav <gyadav@redhat.com> Reviewed-on: https://review.gluster.org/18068 Smoke: Gluster Build System <jenkins@build.gluster.org> CentOS-regression: Gluster Build System <jenkins@build.gluster.org> Reviewed-by: Atin Mukherjee <amukherj@redhat.com>
* glusterd: disallow volume specific options to be set with all as volume nameAtin Mukherjee2017-08-181-0/+25
| | | | | | | | | | | | | | | | All the .validate_fn defined in volume map entry table refers to volinfo object. And if we end up in trying to set a volume level option cluster wide glusterd results into a crash. Change-Id: I7c877aee0ff5c8c1d8c95662fdc8c8923355ae7b BUG: 1482344 Signed-off-by: Atin Mukherjee <amukherj@redhat.com> Reviewed-on: https://review.gluster.org/18052 Smoke: Gluster Build System <jenkins@build.gluster.org> Reviewed-by: Prashanth Pai <ppai@redhat.com> Reviewed-by: mohammed rafi kc <rkavunga@redhat.com> Reviewed-by: Gaurav Yadav <gyadav@redhat.com> CentOS-regression: Gluster Build System <jenkins@build.gluster.org>
* glusterd: Gluster should keep PID file in correct locationGaurav Kumar Garg2017-08-116-9/+8
| | | | | | | | | | | | | | | | | | | | | | | Currently Gluster keeps process pid information of all the daemons and brick processes in Gluster configuration file directory (ie., /var/lib/glusterd/*). These pid files should be seperate from configuration files. Deletion of the configuration file directory might result into serious problems. Also, /var/run/gluster is the default placeholder directory for pid files. So, with this fix Gluster will keep all process pid information of all processes in /var/run/gluster/* directory. Change-Id: Idb09e3fccb6a7355fbac1df31082637c8d7ab5b4 BUG: 1258561 Signed-off-by: Gaurav Kumar Garg <ggarg@redhat.com> Signed-off-by: Saravanakumar Arumugam <sarumuga@redhat.com> Reviewed-on: https://review.gluster.org/13580 Tested-by: MOHIT AGRAWAL <moagrawa@redhat.com> Smoke: Gluster Build System <jenkins@build.gluster.org> CentOS-regression: Gluster Build System <jenkins@build.gluster.org> Reviewed-by: Atin Mukherjee <amukherj@redhat.com>
* posix: add sanity checks for removing the gfid symlink for directoriesRavishankar N2017-08-041-0/+47
| | | | | | | | | | | | | | | ...during mkdir and rmdir. Otherwise, during entry self-heal, the directory could be left out without a .glusterfs symlink causing fops like opendir, readdir to fail. The only chance the missing symlink will be created is when a fresh lookup comes on it. Change-Id: I2e1cf1bce8962ea80187edd8f6d73e0a09cf9f8e BUG: 1477169 Signed-off-by: Ravishankar N <ravishankar@redhat.com> Reviewed-on: https://review.gluster.org/17945 Smoke: Gluster Build System <jenkins@build.gluster.org> CentOS-regression: Gluster Build System <jenkins@build.gluster.org> Reviewed-by: Raghavendra Bhat <raghavendra@redhat.com>
* glusterfsd: allow subdir mountAmar Tumballi2017-08-041-1/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Changes: 1. Take subdir mount option in client (mount.gluster / glusterfsd) 2. Pass the subdir mount to server-handshake (from client-handshake) 3. Handle subdir-mount dir's lookup in server-first-lookup and handle all fops resolution accordingly with proper gfid of subdir 4. Change the auth/addr module to handle the multiple subdir entries in option, and valid parsing. How to use the feature: `# mount -t glusterfs $hostname:/$volname/$subdir /$mount_point` Or `# mount -t glusterfs $hostname:/$volname -osubdir_mount=$subdir /$mount_point` Option can be set like: `# gluster volume set <volname> auth.allow "/subdir1(192.168.1.*),/(192.168.10.*),/subdir2(192.168.8.*)"` Updates #175 Change-Id: I7ea57f76ddbe6c3862cfe02e13f89e8a39719e11 Signed-off-by: Amar Tumballi <amarts@redhat.com> Reviewed-on: https://review.gluster.org/17141 Smoke: Gluster Build System <jenkins@build.gluster.org> Reviewed-by: Shyamsundar Ranganathan <srangana@redhat.com> CentOS-regression: Gluster Build System <jenkins@build.gluster.org>
* tests: don't use hard coded value for glusterd workdirCsaba Henk2017-08-021-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | A number of test referred to /var/lib/glusterd, they were adjusted to use "$GLUSTERD_WORKDIR". (This has significance for proper test runs on non-Linux platforms -- see the following #define in glusterfs.h: #ifdef GF_LINUX_HOST_OS #define GLUSTERD_DEFAULT_WORKDIR DATADIR "/lib/glusterd" #else #define GLUSTERD_DEFAULT_WORKDIR DATADIR "/db/glusterd" #endif Ie. the glusterd workdir will typically be /var/db/glusterd instead of /var/lib/glusterd on non-Linux platforms.) BUG: 1476957 Change-Id: I69ce3e1bb7a0c14ea85b60adbf8205f9aca46cd5 Signed-off-by: Csaba Henk <csaba@redhat.com> Reviewed-on: https://review.gluster.org/17937 Smoke: Gluster Build System <jenkins@build.gluster.org> Reviewed-by: Amar Tumballi <amarts@redhat.com> Tested-by: Amar Tumballi <amarts@redhat.com> CentOS-regression: Gluster Build System <jenkins@build.gluster.org> Reviewed-by: Jeff Darcy <jeff@pl.atyp.us>
* tests/gfapi : add test case for nameless lookups in glfs_resolve_component()Jiffin Tony Thottan2017-08-022-0/+169
| | | | | | | | | | | | | Plus address pending comment to add check for entry "" in glfs_resolve_component() Change-Id: I6063f776ce1cd76cb4c1b1f621b064f3dcc91e5c BUG: 1460514 Signed-off-by: Jiffin Tony Thottan <jthottan@redhat.com> Reviewed-on: https://review.gluster.org/17844 Smoke: Gluster Build System <jenkins@build.gluster.org> CentOS-regression: Gluster Build System <jenkins@build.gluster.org> Reviewed-by: Niels de Vos <ndevos@redhat.com> Reviewed-by: soumya k <skoduri@redhat.com>
* md-cache: avoid checking the xattr value buffer with string functions.Günther Deschner2017-08-011-0/+27
| | | | | | | | | | | | | | | | | | | | | | | xattrs may very well contain binary, non-text data with leading 0 values. Using strcmp for checking empty values is not the appropriate thing to do: In the best case, it might treat a binary xattr value starting with 0 from being cached (and hence also from being reported back with xattr). In the worst case, we might read beyond the end of a data blob that does contain any zero byte. We fix this by checking the length of the data blob and checking the first byte against 0 if the length is one. Signed-off-by: Guenther Deschner <gd@samba.org> Pair-Programmed-With: Michael Adam <obnox@samba.org> Change-Id: If723c465a630b8a37b6be58782a2724df7ac6b11 BUG: 1476324 Reviewed-on: https://review.gluster.org/17910 Reviewed-by: Michael Adam <obnox@samba.org> Smoke: Gluster Build System <jenkins@build.gluster.org> Reviewed-by: Poornima G <pgurusid@redhat.com> Tested-by: Poornima G <pgurusid@redhat.com> CentOS-regression: Gluster Build System <jenkins@build.gluster.org>
* glusterd: Add option to get all volume options through get-state CLISamikshan Bairagya2017-07-251-0/+18
| | | | | | | | | | | | | | | | | | | | This commit makes the get-state CLI capable to returning the values for all volume options for all volumes. This is similar to what you get when you issue a `gluster volume get <volname> all` command. This is the new usage for the get-state CLI: # gluster get-state [<daemon>] [[odir </path/to/output/dir/>] \ [file <filename>]] [detail|volumeoptions] Fixes: #277 Change-Id: Ice52d936a5a389c6fa0ba5ab32416a65cdfde46d Signed-off-by: Samikshan Bairagya <samikshan@gmail.com> Reviewed-on: https://review.gluster.org/17858 CentOS-regression: Gluster Build System <jenkins@build.gluster.org> Reviewed-by: Atin Mukherjee <amukherj@redhat.com> Reviewed-by: Gaurav Yadav <gyadav@redhat.com> Smoke: Gluster Build System <jenkins@build.gluster.org>
* tests: replace brick failure shouldn't corrupt volfilesRaghavendra Talur2017-07-241-0/+31
| | | | | | | | | | | | | | This is a test to present the known issue. It will be skipped as it has the known issue marker. Change-Id: Id6fa5d323abe0bc76a58cd92cb8e52fcde41b49b BUG: 1473026 Signed-off-by: Raghavendra Talur <rtalur@redhat.com> Reviewed-on: https://review.gluster.org/17828 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: Atin Mukherjee <amukherj@redhat.com>
* storage/posix: Don't allow gfid/volume-id xattr to be removedPranith Kumar K2017-07-183-0/+145
| | | | | | | | | | | | | | | | | | | | | | | Problem: Bulk xattr removal doesn't check if the xattrs that are coming in xdata have gfid/volume-id xattrs, so there is potential for bulkremovexattr removing gfid/volume-id. I also observed that bulkremovexattr is not available for fremovexattr. Fix: Do proper checks in bulk removexattr to remove gfid/volume-id. Refactor [f]removexattr to reduce the differences. BUG: 1470489 Change-Id: Ia845b31846a149500111c0996646e648f72cdce6 Signed-off-by: Pranith Kumar K <pkarampu@redhat.com> Reviewed-on: https://review.gluster.org/17765 Smoke: Gluster Build System <jenkins@build.gluster.org> Reviewed-by: Jeff Darcy <jeff@pl.atyp.us> CentOS-regression: Gluster Build System <jenkins@build.gluster.org> Reviewed-by: Anuradha Talur <atalur@redhat.com> Reviewed-by: Niels de Vos <ndevos@redhat.com> Reviewed-by: Krutika Dhananjay <kdhananj@redhat.com>
* cluster/ec: Non-disruptive upgrade on EC volume failsSunil Kumar Acharya2017-07-141-0/+1
| | | | | | | | | | | | | | | | | | | | Problem: Enabling optimistic changelog on EC volume was not handling node down scenarios appropriately resulting in volume data inaccessibility. Solution: Update dirty xattr appropriately on good bricks whenever nodes are down. This would fix the metadata information as part of heal and thus ensures data accessibility. BUG: 1468261 Change-Id: I08b0d28df386d9b2b49c3de84b4aac1c729ac057 Signed-off-by: Sunil Kumar Acharya <sheggodu@redhat.com> Reviewed-on: https://review.gluster.org/17703 Smoke: Gluster Build System <jenkins@build.gluster.org> CentOS-regression: Gluster Build System <jenkins@build.gluster.org> Reviewed-by: Pranith Kumar Karampuri <pkarampu@redhat.com>
* afr: mark non sources as sinks in metadata healRavishankar N2017-07-131-0/+64
| | | | | | | | | | | | | | | | | | 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>
* glusterd: Introduce option to limit no. of muxed bricks per processSamikshan Bairagya2017-07-101-0/+57
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | This commit introduces a new global option that can be set to limit the number of multiplexed bricks in one process. Usage: `# gluster volume set all cluster.max-bricks-per-process <value>` If this option is not set then multiplexing will happen for now with no limitations set; i.e. a brick process will have as many bricks multiplexed to it as possible. In other words the current multiplexing behaviour won't change if this option isn't set to any value. This commit also introduces a brick process instance that contains information about brick processes, like the number of bricks handled by the process (which is 1 in non-multiplexing cases), list of bricks, and port number which also serves as an unique identifier for each brick process instance. The brick process list is maintained in 'glusterd_conf_t'. Updates: #151 Change-Id: Ib987d14ab0a4f6034dac01b73a4b2839f7b0b695 Signed-off-by: Samikshan Bairagya <samikshan@gmail.com> Reviewed-on: https://review.gluster.org/17469 Smoke: Gluster Build System <jenkins@build.gluster.org> CentOS-regression: Gluster Build System <jenkins@build.gluster.org> Reviewed-by: Atin Mukherjee <amukherj@redhat.com>
* features/shard: Remove ctx from LRU in shard_forgetPranith Kumar K2017-06-301-0/+48
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Problem: There is a race when the following two commands are executed on the mount in parallel from two different terminals on a sharded volume, which leads to use-after-free. Terminal-1: while true; do dd if=/dev/zero of=file1 bs=1M count=4; done Terminal-2: while true; do cat file1 > /dev/null; done In the normal case this is the life-cycle of a shard-inode 1) Shard is added to LRU when it is first looked-up 2) For every operation on the shard it is moved up in LRU 3) When "unlink of the shard"/"LRU limit is hit" happens it is removed from LRU But we are seeing a race where the inode stays in Shard LRU even after it is forgotten which leads to Use-after-free and then some memory-corruptions. These are the steps: 1) Shard is added to LRU when it is first looked-up 2) For every operation on the shard it is moved up in LRU Reader-handler Truncate-handler 1) Reader handler needs shard-x to be read. 1) Truncate has just deleted shard-x 2) In shard_common_resolve_shards(), it does inode_resolve() and that leads to a hit in LRU, so it is going to call __shard_update_shards_inode_list() to move the inode to top of LRU 2) shard-x gets unlinked from the itable and inode_forget(inode, 0) is called to make sure the inode can be purged upon last unref 3) when __shard_update_shards_inode_list() is called it finds that the inode is not in LRU so it adds it back to the LRU-list Both these operations complete and call inode_unref(shard-x) which leads to the inode getting freed and forgotten, even when it is in Shard LRU list. When more inodes are added to LRU, use-after-free will happen and it leads to undefined behaviors. Fix: I see that the inode can be removed from LRU even by the protocol layers like gfapi/gNFS when LRU limit is reached. So it is better to add a check in shard_forget() to remove itself from LRU list if it exists. BUG: 1466037 Change-Id: Ia79c0c5c9d5febc56c41ddb12b5daf03e5281638 Signed-off-by: Pranith Kumar K <pkarampu@redhat.com> Reviewed-on: https://review.gluster.org/17644 Smoke: Gluster Build System <jenkins@build.gluster.org> CentOS-regression: Gluster Build System <jenkins@build.gluster.org> Reviewed-by: Krutika Dhananjay <kdhananj@redhat.com>
* index: Do not proceed with init if brick is not mountedRavishankar N2017-06-193-0/+16
| | | | | | | | | | | | | | | | | | | | | ..or else when a volume start force is given, we end up creating /brick-path/.glusterfs/indices folder and various subdirs under it and eventually starting the brick process. As a part of this patch, glusterd_get_index_basepath() is added in glusterd, who will then use it to create the basepath during volume-create, add-brick, replace-brick and reset-brick. It also uses this function to set the 'index-base' xlator option for the index translator. Change-Id: Id018cf3cb6f1e2e35b5c4cf438d1e939025cb0fc BUG: 1457202 Signed-off-by: Ravishankar N <ravishankar@redhat.com> Reviewed-on: https://review.gluster.org/17426 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: Atin Mukherjee <amukherj@redhat.com> Reviewed-by: Pranith Kumar Karampuri <pkarampu@redhat.com>
* upcall: Update the access time in missing casesPoornima G2017-06-091-0/+36
| | | | | | | | | | | | | | | | | | Issue: In fops like rename, link, unlink etc, the parent dirrs' client access time was not being updated. And in fops like create, link, symlink etc. the new file/dirs' client access time was not updated. Solution: Update the client access time for both parent and new entry. Change-Id: Id9f63583216ae857f6251dca15797ac66fa85430 BUG: 1458127 Signed-off-by: Poornima G <pgurusid@redhat.com> Reviewed-on: https://review.gluster.org/17450 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>
* core: fix spelling errorsKaleb S. KEITHLEY2017-06-021-1/+1
| | | | | | | | | | | | | | fixes for various minor spelling errors and typos Reported-by: Patrick Matthäi <pmatthaei@debian.org> Change-Id: Ic1be36f82e3d822bbdc9559878bd79520fc0fcd5 BUG: 1457808 Signed-off-by: Kaleb S. KEITHLEY <kkeithle@redhat.com> Reviewed-on: https://review.gluster.org/17442 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> Smoke: Gluster Build System <jenkins@build.gluster.org>
* glusterfs: Not able to mount running volume after enable brick mux and ↵Mohit Agrawal2017-05-311-0/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | stopped any volume Problem: After enabled brick mux if any volume has down and then try ot run mount with running volume , mount command is hung. Solution: After enable brick mux server has shared one data structure server_conf for all associated subvolumes.After down any subvolume in some ungraceful manner (remove brick directory) posix xlator sends GF_EVENT_CHILD_DOWN event to parent xlatros and server notify updates the child_up to false in server_conf.When client is trying to communicate with server through mount it checks conf->child_up and it is FALSE so it throws message "translator are not yet ready". From this patch updated structure server_conf to save child_up status for xlator wise. Another improtant correction from this patch is cleanup threads from server side xlators after stop the volume. BUG: 1453977 Change-Id: Ic54da3f01881b7c9429ce92cc569236eb1d43e0d Signed-off-by: Mohit Agrawal <moagrawa@redhat.com> Reviewed-on: https://review.gluster.org/17356 Smoke: Gluster Build System <jenkins@build.gluster.org> NetBSD-regression: NetBSD Build System <jenkins@build.gluster.org> Reviewed-by: Raghavendra Talur <rtalur@redhat.com> CentOS-regression: Gluster Build System <jenkins@build.gluster.org> Reviewed-by: Jeff Darcy <jeff@pl.atyp.us>
* features/shard: Handle offset in appending writesPranith Kumar K2017-05-272-0/+211
| | | | | | | | | | | | | | | | | | | | | When a file is opened with append, all writes are appended at the end of file irrespective of the offset given in the write syscall. This needs to be considered in shard size update function and also for choosing which shard to write to. At the moment shard piggybacks on queuing from write-behind xlator for ordering of the operations. So if write-behind is disabled and two parallel appending-writes come both of which can increase the file size beyond shard-size the file will be corrupted. BUG: 1455301 Change-Id: I9007e6a39098ab0b5d5386367bd07eb5f89cb09e Signed-off-by: Pranith Kumar K <pkarampu@redhat.com> Reviewed-on: https://review.gluster.org/17387 Smoke: Gluster Build System <jenkins@build.gluster.org> Reviewed-by: Krutika Dhananjay <kdhananj@redhat.com> NetBSD-regression: NetBSD Build System <jenkins@build.gluster.org> CentOS-regression: Gluster Build System <jenkins@build.gluster.org>
* libglusterfs : Fix crash in glusterd while peer probingGaurav Yadav2017-05-261-0/+25
| | | | | | | | | | | | | | | | | | | | | | glusterd crashes when port is being set explcitly to a range which is outside greater than short data type range. Eg. sysctl net.ipv4.ip_local_reserved_ports="49152-49156" In above case glusterd crashes while parsing the port. With this fix glusterd will be able to handle port range between INT_MIN to INT_MAX Change-Id: I7c75ee67937b0e3384502973d96b1c36c89e0fe1 BUG: 1454418 Signed-off-by: Gaurav Yadav <gyadav@redhat.com> Reviewed-on: https://review.gluster.org/17359 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: Samikshan Bairagya <samikshan@gmail.com> Reviewed-by: Atin Mukherjee <amukherj@redhat.com> Reviewed-by: Niels de Vos <ndevos@redhat.com> Reviewed-by: Jeff Darcy <jeff@pl.atyp.us>
* nl-cache: In case of nameless operations do not cachePoornima G2017-05-221-0/+25
| | | | | | | | | | | | | | | | | | Issue: In nameless lookup/other fops, parent inode will be NULL, when we try to add the cache to the NULL inode, it causes a crash. Hence handle the scenario of nameless fops, and do not cache/serve the nameless fops. Change-Id: I3b90f882ac89e6aaf3419db89e6f890797f37700 BUG: 1451588 Signed-off-by: Poornima G <pgurusid@redhat.com> Reviewed-on: https://review.gluster.org/17316 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>
* rda, glusterd: Change the max of rda-cache-limit to INFINITYPoornima G2017-05-212-1/+22
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Issue: The max value of rda-cache-limit is 1GB before this patch. When parallel-readdir is enabled, there will be many instances of readdir-ahead, hence the rda-cache-limit depends on the number of instances. Eg: On a volume with distribute count 4, rda-cache-limit when parallel-readdir is enabled, will be 4GB instead of 1GB. Consider a followinf sequence of operations: - Enable parallel readdir - Set rda-cache-limit to lets say 3GB - Disable parallel-readdir, this results in one instance of readdir-ahead and the rda-cache-limit will be back to 1GB, but the current value is 3GB and hence the mount will stop working as 3GB > max 1GB. Solution: To fix this, we can limit the cache to 1GB even when parallel-readdir is enabled. But there is no necessity to limit the cache to 1GB, it can be increased if the system has enough resources. Hence getting rid of the rda-cache-limit max value is more apt. If we just change the rda-cache-limit max to INFINITY, we will render older(<3.11) clients broken, when the rda-cache-limit is set to > 1GB (as the older clients still expect a value < 1GB). To safely change the max value of rda-cache-limit to INFINITY, add a check in glusted to verify all the clients are > 3.11 if the value exceeds 1GB. Change-Id: Id0cdda3b053287b659c7bf511b13db2e45b92032 BUG: 1446516 Signed-off-by: Poornima G <pgurusid@redhat.com> Reviewed-on: https://review.gluster.org/17338 Smoke: Gluster Build System <jenkins@build.gluster.org> Reviewed-by: Atin Mukherjee <amukherj@redhat.com> NetBSD-regression: NetBSD Build System <jenkins@build.gluster.org> CentOS-regression: Gluster Build System <jenkins@build.gluster.org>
* glusterd: Don't spawn new glusterfsds on node reboot with brick-muxSamikshan Bairagya2017-05-181-0/+54
| | | | | | | | | | | | | | | | | | | | | | | | | | With brick multiplexing enabled, upon a node reboot new bricks were not being attached to the first spawned brick process even though there wasn't any compatibility issues. The reason for this is that upon glusterd restart after a node reboot, since brick services aren't running, glusterd starts the bricks in a "no-wait" mode. So after a brick process is spawned for the first brick, there isn't enough time for the corresponding pid file to get populated with a value before the compatibilty check is made for the next brick. This commit solves this by iteratively waiting for the pidfile to be populated in the brick compatibility comparison stage before checking if the brick process is alive. Change-Id: Ibd1f8e54c63e4bb04162143c9d70f09918a44aa4 BUG: 1451248 Signed-off-by: Samikshan Bairagya <samikshan@gmail.com> Reviewed-on: https://review.gluster.org/17307 Reviewed-by: Atin Mukherjee <amukherj@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>
* glusterd: remove useless options from glusterd's volume set tableZhou Zhengping2017-05-171-10/+10
| | | | | | | | | | | | | | | | These options will cause brick's log complains: _log_if_unknown_option] 0-patchy-quota: option 'timeout' is not recognized _log_if_unknown_option] 0-patchy-server: option 'ping-timeout' is not recognized Change-Id: Ida2add13f792736a4e52bfaf38d1169309283a3f BUG: 1449008 Signed-off-by: Zhou Zhengping <johnzzpcrystal@gmail.com> Reviewed-on: https://review.gluster.org/17213 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: Prashanth Pai <ppai@redhat.com> Reviewed-by: Jeff Darcy <jeff@pl.atyp.us>
* tests/gfapi:Adding testcase to check handling of "." and ".."Mohammed Rafi KC2017-05-122-0/+165
| | | | | | | | | | | | | | | | Adding a testcase to check the proper handling of "." and ".." in gfapi path. The patch which fix the issue is https://review.gluster.org/#/c/17177 Change-Id: I5c9cceade30f7d8a3b451b5f34f1cf9815729c4a BUG: 1447266 Signed-off-by: Mohammed Rafi KC <rkavunga@redhat.com> Reviewed-on: https://review.gluster.org/17216 Smoke: Gluster Build System <jenkins@build.gluster.org> NetBSD-regression: NetBSD Build System <jenkins@build.gluster.org> Reviewed-by: Niels de Vos <ndevos@redhat.com> Reviewed-by: Jeff Darcy <jeff@pl.atyp.us> CentOS-regression: Gluster Build System <jenkins@build.gluster.org>
* glusterd: Make reset-brick work correctly if brick-mux is onSamikshan Bairagya2017-05-101-0/+79
| | | | | | | | | | | | | | | | | | | Reset brick currently kills of the corresponding brick process. However, with brick multiplexing enabled, stopping the brick process would render all bricks attached to it unavailable. To handle this correctly, we need to make sure that the brick process is terminated only if brick-multiplexing is disabled. Otherwise, we should send the GLUSTERD_BRICK_TERMINATE rpc to the respective brick process to detach the brick that is to be reset. Change-Id: I69002d66ffe6ec36ef48af09b66c522c6d35ac58 BUG: 1446172 Signed-off-by: Samikshan Bairagya <samikshan@gmail.com> Reviewed-on: https://review.gluster.org/17128 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: Atin Mukherjee <amukherj@redhat.com>
* afr: fixes to quorum-type in afr_priv_dump()Ravishankar N2017-05-101-0/+47
| | | | | | | | | | | | | | | | | | 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>
* glusterd: socketfile & pidfile related fixes for brick multiplexing featureMohit Agrawal2017-05-093-0/+116
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Problem: While brick-muliplexing is on after restarting glusterd, CLI is not showing pid of all brick processes in all volumes. Solution: While brick-mux is on all local brick process communicated through one UNIX socket but as per current code (glusterd_brick_start) it is trying to communicate with separate UNIX socket for each volume which is populated based on brick-name and vol-name.Because of multiplexing design only one UNIX socket is opened so it is throwing poller error and not able to fetch correct status of brick process through cli process. To resolve the problem write a new function glusterd_set_socket_filepath_for_mux that will call by glusterd_brick_start to validate about the existence of socketpath. To avoid the continuous EPOLLERR erros in logs update socket_connect code. Test: To reproduce the issue followed below steps 1) Create two distributed volumes(dist1 and dist2) 2) Set cluster.brick-multiplex is on 3) kill glusterd 4) run command gluster v status After apply the patch it shows correct pid for all volumes BUG: 1444596 Change-Id: I5d10af69dea0d0ca19511f43870f34295a54a4d2 Signed-off-by: Mohit Agrawal <moagrawa@redhat.com> Reviewed-on: https://review.gluster.org/17101 Smoke: Gluster Build System <jenkins@build.gluster.org> Reviewed-by: Prashanth Pai <ppai@redhat.com> NetBSD-regression: NetBSD Build System <jenkins@build.gluster.org> CentOS-regression: Gluster Build System <jenkins@build.gluster.org> Reviewed-by: Atin Mukherjee <amukherj@redhat.com>
* Fixes quota aux mount failureSanoj Unnikrishnan2017-05-088-8/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The aux mount is created on the first limit/remove_limit/list command and it remains until volume is stopped / deleted / (quota is disabled) , where we do a lazy unmount. If the process is uncleanly terminated, then the mount entry remains and we get (Transport disconnected) error on subsequent attempts to run quota list/limit-usage/remove commands. Second issue, There is also a risk of inadvertent rm -rf on the /var/run/gluster causing data loss for the user. Ideally, /var/run is a temp path for application use and should not cause any data loss to persistent storage. Solution: 1) unmount the aux mount after each use. 2) clean stale mount before mounting, if any. One caveat with doing mount/unmount on each command is that we cannot use same mount point for both list and limit commands. The reason for this is that list command needs mount to be accessible in cli after response from glusterd, So it could be unmounted by a limit command if executed in parallel (had we used same mount point) Hence we use separate mount points for list and limit commands. Change-Id: I4f9e39da2ac2b65941399bffb6440db8a6ba59d0 BUG: 1433906 Signed-off-by: Sanoj Unnikrishnan <sunnikri@redhat.com> Reviewed-on: https://review.gluster.org/16938 NetBSD-regression: NetBSD Build System <jenkins@build.gluster.org> Smoke: Gluster Build System <jenkins@build.gluster.org> Reviewed-by: Manikandan Selvaganesh <manikandancs333@gmail.com> CentOS-regression: Gluster Build System <jenkins@build.gluster.org> Reviewed-by: Raghavendra G <rgowdapp@redhat.com> Reviewed-by: Atin Mukherjee <amukherj@redhat.com>
* afr: don't do a post-op on a brick if op failedRavishankar N2017-04-181-0/+46
| | | | | | | | | | | | | | | | | | | | | | | | | | 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>
* dht: Add readdir-ahead in rebalance graph if parallel-readdir is onPoornima G2017-04-182-0/+45
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Issue: The value of linkto xattr is generally the name of the dht's next subvol, this requires that the next subvol of dht is not changed for the life time of the volume. But with parallel readdir enabled, the readdir-ahead loaded below dht, is optional. The linkto xattr for first subvol, when: - parallel readdir is enabled : "<volname>-readdir-head-0" - plain distribute volume : "<volname>-client-0" - distribute replicate volume : "<volname>-afr-0" The value of linkto xattr is "<volname>-readdir-head-0" when parallel readdir is enabled, and is "<volname>-client-0" if its disabled. But the dht_lookup takes care of healing if it cannot identify which linkto subvol, the xattr points to. In dht_lookup_cbk, if linkto xattr is found to be "<volname>-client-0" and parallel readdir is enabled, then it cannot understand the value "<volname>-client-0" as it expects "<volname>-readdir-head-0". In that case, dht_lookup_everywhere is issued and then the linkto file is unlinked and recreated with the right linkto xattr. The issue is when parallel readdir is enabled, mount point accesses the file that is currently being migrated. Since rebalance process doesn't have parallel-readdir feature, it expects "<volname>-client-0" where as mount expects "<volname>-readdir-head-0". Thus at some point either the mount or rebalance will fail. Solution: Enable parallel-readdir for rebalance as well and then do not allow enabling/disabling parallel-readdir if rebalance is in progress. Change-Id: I241ab966bdd850e667f7768840540546f5289483 BUG: 1436090 Signed-off-by: Poornima G <pgurusid@redhat.com> Reviewed-on: https://review.gluster.org/17056 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: Atin Mukherjee <amukherj@redhat.com> Reviewed-by: Raghavendra G <rgowdapp@redhat.com>
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