[Gluster-users] [Stale file handle] in shard volume
Olaf Buitelaar
olaf.buitelaar at gmail.com
Sun Dec 30 19:56:09 UTC 2018
Dear All,
till now a selected group of VM's still seem to produce new stale file's
and getting paused due to this.
I've not updated gluster recently, however i did change the op version from
31200 to 31202 about a week before this issue arose.
Looking at the .shard directory, i've 100.000+ files sharing the same
characteristics as a stale file. which are found till now,
they all have the sticky bit set, e.g. file permissions; ---------T. are
0kb in size, and have the trusted.glusterfs.dht.linkto attribute.
These files range from long a go (beginning of the year) till now. Which
makes me suspect this was laying dormant for some time now..and somehow
recently surfaced.
Checking other sub-volumes they contain also 0kb files in the .shard
directory, but don't have the sticky bit and the linkto attribute.
Does anybody else experience this issue? Could this be a bug or an
environmental issue?
Also i wonder if there is any tool or gluster command to clean all stale
file handles?
Otherwise i'm planning to make a simple bash script, which iterates over
the .shard dir, checks each file for the above mentioned criteria, and
(re)moves the file and the corresponding .glusterfs file.
If there are other criteria needed to identify a stale file handle, i would
like to hear that.
If this is a viable and safe operation to do of course.
Thanks Olaf
Op do 20 dec. 2018 om 13:43 schreef Olaf Buitelaar <olaf.buitelaar at gmail.com
>:
> Dear All,
>
> I figured it out, it appeared to be the exact same issue as described
> here;
> https://lists.gluster.org/pipermail/gluster-users/2018-March/033785.html
> Another subvolume also had the shard file, only were all 0 bytes and had
> the dht.linkto
>
> for reference;
> [root at lease-04 ovirt-backbone-2]# getfattr -d -m . -e hex
> .shard/f28cabcb-d169-41fc-a633-9bef4c4a8e40.51500
> # file: .shard/f28cabcb-d169-41fc-a633-9bef4c4a8e40.51500
>
> security.selinux=0x73797374656d5f753a6f626a6563745f723a6574635f72756e74696d655f743a733000
> trusted.gfid=0x298147e49f9748b2baf1c8fff897244d
>
> trusted.gfid2path.b48064c78d7a85c9=0x62653331383633382d653861302d346336642d393737642d3761393337616138343830362f66323863616263622d643136392d343166632d613633332d3962656634633461386534302e3531353030
>
> trusted.glusterfs.dht.linkto=0x6f766972742d6261636b626f6e652d322d7265706c69636174652d3100
>
> [root at lease-04 ovirt-backbone-2]# getfattr -d -m . -e hex
> .glusterfs/29/81/298147e4-9f97-48b2-baf1-c8fff897244d
> # file: .glusterfs/29/81/298147e4-9f97-48b2-baf1-c8fff897244d
>
> security.selinux=0x73797374656d5f753a6f626a6563745f723a6574635f72756e74696d655f743a733000
> trusted.gfid=0x298147e49f9748b2baf1c8fff897244d
>
> trusted.gfid2path.b48064c78d7a85c9=0x62653331383633382d653861302d346336642d393737642d3761393337616138343830362f66323863616263622d643136392d343166632d613633332d3962656634633461386534302e3531353030
>
> trusted.glusterfs.dht.linkto=0x6f766972742d6261636b626f6e652d322d7265706c69636174652d3100
>
> [root at lease-04 ovirt-backbone-2]# stat
> .glusterfs/29/81/298147e4-9f97-48b2-baf1-c8fff897244d
> File: ‘.glusterfs/29/81/298147e4-9f97-48b2-baf1-c8fff897244d’
> Size: 0 Blocks: 0 IO Block: 4096 regular empty
> file
> Device: fd01h/64769d Inode: 1918631406 Links: 2
> Access: (1000/---------T) Uid: ( 0/ root) Gid: ( 0/ root)
> Context: system_u:object_r:etc_runtime_t:s0
> Access: 2018-12-17 21:43:36.405735296 +0000
> Modify: 2018-12-17 21:43:36.405735296 +0000
> Change: 2018-12-17 21:43:36.405735296 +0000
> Birth: -
>
> removing the shard file and glusterfs file from each node resolved the
> issue.
>
> I also found this thread;
> https://lists.gluster.org/pipermail/gluster-users/2018-December/035460.html
> Maybe he suffers from the same issue.
>
> Best Olaf
>
>
> Op wo 19 dec. 2018 om 21:56 schreef Olaf Buitelaar <
> olaf.buitelaar at gmail.com>:
>
>> Dear All,
>>
>> It appears i've a stale file in one of the volumes, on 2 files. These
>> files are qemu images (1 raw and 1 qcow2).
>> I'll just focus on 1 file since the situation on the other seems the
>> same.
>>
>> The VM get's paused more or less directly after being booted with error;
>> [2018-12-18 14:05:05.275713] E [MSGID: 133010]
>> [shard.c:1724:shard_common_lookup_shards_cbk] 0-ovirt-backbone-2-shard:
>> Lookup on shard 51500 failed. Base file gfid =
>> f28cabcb-d169-41fc-a633-9bef4c4a8e40 [Stale file handle]
>>
>> investigating the shard;
>>
>> #on the arbiter node:
>>
>> [root at lease-05 ovirt-backbone-2]# getfattr -n glusterfs.gfid.string
>> /mnt/ovirt-backbone-2/b1c2c949-aef4-4aec-999b-b179efeef732/images/f6ac9660-a84e-469e-a17c-c6dbc538af4b/d6b09501-5b79-4c92-bf10-2ed3bda1b425
>> getfattr: Removing leading '/' from absolute path names
>> # file:
>> mnt/ovirt-backbone-2/b1c2c949-aef4-4aec-999b-b179efeef732/images/f6ac9660-a84e-469e-a17c-c6dbc538af4b/d6b09501-5b79-4c92-bf10-2ed3bda1b425
>> glusterfs.gfid.string="f28cabcb-d169-41fc-a633-9bef4c4a8e40"
>>
>> [root at lease-05 ovirt-backbone-2]# getfattr -d -m . -e hex
>> .shard/f28cabcb-d169-41fc-a633-9bef4c4a8e40.51500
>> # file: .shard/f28cabcb-d169-41fc-a633-9bef4c4a8e40.51500
>>
>> security.selinux=0x73797374656d5f753a6f626a6563745f723a6574635f72756e74696d655f743a733000
>> trusted.afr.dirty=0x000000000000000000000000
>> trusted.gfid=0x1f86b4328ec6424699aa48cc6d7b5da0
>>
>> trusted.gfid2path.b48064c78d7a85c9=0x62653331383633382d653861302d346336642d393737642d3761393337616138343830362f66323863616263622d643136392d343166632d613633332d3962656634633461386534302e3531353030
>>
>> [root at lease-05 ovirt-backbone-2]# getfattr -d -m . -e hex
>> .glusterfs/1f/86/1f86b432-8ec6-4246-99aa-48cc6d7b5da0
>> # file: .glusterfs/1f/86/1f86b432-8ec6-4246-99aa-48cc6d7b5da0
>>
>> security.selinux=0x73797374656d5f753a6f626a6563745f723a6574635f72756e74696d655f743a733000
>> trusted.afr.dirty=0x000000000000000000000000
>> trusted.gfid=0x1f86b4328ec6424699aa48cc6d7b5da0
>>
>> trusted.gfid2path.b48064c78d7a85c9=0x62653331383633382d653861302d346336642d393737642d3761393337616138343830362f66323863616263622d643136392d343166632d613633332d3962656634633461386534302e3531353030
>>
>> [root at lease-05 ovirt-backbone-2]# stat
>> .glusterfs/1f/86/1f86b432-8ec6-4246-99aa-48cc6d7b5da0
>> File: ‘.glusterfs/1f/86/1f86b432-8ec6-4246-99aa-48cc6d7b5da0’
>> Size: 0 Blocks: 0 IO Block: 4096 regular empty
>> file
>> Device: fd01h/64769d Inode: 537277306 Links: 2
>> Access: (0660/-rw-rw----) Uid: ( 0/ root) Gid: ( 0/ root)
>> Context: system_u:object_r:etc_runtime_t:s0
>> Access: 2018-12-17 21:43:36.361984810 +0000
>> Modify: 2018-12-17 21:43:36.361984810 +0000
>> Change: 2018-12-18 20:55:29.908647417 +0000
>> Birth: -
>>
>> [root at lease-05 ovirt-backbone-2]# find . -inum 537277306
>> ./.glusterfs/1f/86/1f86b432-8ec6-4246-99aa-48cc6d7b5da0
>> ./.shard/f28cabcb-d169-41fc-a633-9bef4c4a8e40.51500
>>
>> #on the data nodes:
>>
>> [root at lease-08 ~]# getfattr -n glusterfs.gfid.string
>> /mnt/ovirt-backbone-2/b1c2c949-aef4-4aec-999b-b179efeef732/images/f6ac9660-a84e-469e-a17c-c6dbc538af4b/d6b09501-5b79-4c92-bf10-2ed3bda1b425
>> getfattr: Removing leading '/' from absolute path names
>> # file:
>> mnt/ovirt-backbone-2/b1c2c949-aef4-4aec-999b-b179efeef732/images/f6ac9660-a84e-469e-a17c-c6dbc538af4b/d6b09501-5b79-4c92-bf10-2ed3bda1b425
>> glusterfs.gfid.string="f28cabcb-d169-41fc-a633-9bef4c4a8e40"
>>
>> [root at lease-08 ovirt-backbone-2]# getfattr -d -m . -e hex
>> .shard/f28cabcb-d169-41fc-a633-9bef4c4a8e40.51500
>> # file: .shard/f28cabcb-d169-41fc-a633-9bef4c4a8e40.51500
>>
>> security.selinux=0x73797374656d5f753a6f626a6563745f723a6574635f72756e74696d655f743a733000
>> trusted.afr.dirty=0x000000000000000000000000
>> trusted.gfid=0x1f86b4328ec6424699aa48cc6d7b5da0
>>
>> trusted.gfid2path.b48064c78d7a85c9=0x62653331383633382d653861302d346336642d393737642d3761393337616138343830362f66323863616263622d643136392d343166632d613633332d3962656634633461386534302e3531353030
>>
>> [root at lease-08 ovirt-backbone-2]# getfattr -d -m . -e hex
>> .glusterfs/1f/86/1f86b432-8ec6-4246-99aa-48cc6d7b5da0
>> # file: .glusterfs/1f/86/1f86b432-8ec6-4246-99aa-48cc6d7b5da0
>>
>> security.selinux=0x73797374656d5f753a6f626a6563745f723a6574635f72756e74696d655f743a733000
>> trusted.afr.dirty=0x000000000000000000000000
>> trusted.gfid=0x1f86b4328ec6424699aa48cc6d7b5da0
>>
>> trusted.gfid2path.b48064c78d7a85c9=0x62653331383633382d653861302d346336642d393737642d3761393337616138343830362f66323863616263622d643136392d343166632d613633332d3962656634633461386534302e3531353030
>>
>> [root at lease-08 ovirt-backbone-2]# stat
>> .glusterfs/1f/86/1f86b432-8ec6-4246-99aa-48cc6d7b5da0
>> File: ‘.glusterfs/1f/86/1f86b432-8ec6-4246-99aa-48cc6d7b5da0’
>> Size: 2166784 Blocks: 4128 IO Block: 4096 regular file
>> Device: fd03h/64771d Inode: 12893624759 Links: 3
>> Access: (0660/-rw-rw----) Uid: ( 0/ root) Gid: ( 0/ root)
>> Context: system_u:object_r:etc_runtime_t:s0
>> Access: 2018-12-18 18:52:38.070776585 +0000
>> Modify: 2018-12-17 21:43:36.388054443 +0000
>> Change: 2018-12-18 21:01:47.810506528 +0000
>> Birth: -
>>
>> [root at lease-08 ovirt-backbone-2]# find . -inum 12893624759
>> ./.glusterfs/1f/86/1f86b432-8ec6-4246-99aa-48cc6d7b5da0
>> ./.shard/f28cabcb-d169-41fc-a633-9bef4c4a8e40.51500
>>
>> ========================
>>
>> [root at lease-11 ovirt-backbone-2]# getfattr -n glusterfs.gfid.string
>> /mnt/ovirt-backbone-2/b1c2c949-aef4-4aec-999b-b179efeef732/images/f6ac9660-a84e-469e-a17c-c6dbc538af4b/d6b09501-5b79-4c92-bf10-2ed3bda1b425
>> getfattr: Removing leading '/' from absolute path names
>> # file:
>> mnt/ovirt-backbone-2/b1c2c949-aef4-4aec-999b-b179efeef732/images/f6ac9660-a84e-469e-a17c-c6dbc538af4b/d6b09501-5b79-4c92-bf10-2ed3bda1b425
>> glusterfs.gfid.string="f28cabcb-d169-41fc-a633-9bef4c4a8e40"
>>
>> [root at lease-11 ovirt-backbone-2]# getfattr -d -m . -e hex
>> .shard/f28cabcb-d169-41fc-a633-9bef4c4a8e40.51500
>> # file: .shard/f28cabcb-d169-41fc-a633-9bef4c4a8e40.51500
>>
>> security.selinux=0x73797374656d5f753a6f626a6563745f723a6574635f72756e74696d655f743a733000
>> trusted.afr.dirty=0x000000000000000000000000
>> trusted.gfid=0x1f86b4328ec6424699aa48cc6d7b5da0
>>
>> trusted.gfid2path.b48064c78d7a85c9=0x62653331383633382d653861302d346336642d393737642d3761393337616138343830362f66323863616263622d643136392d343166632d613633332d3962656634633461386534302e3531353030
>>
>> [root at lease-11 ovirt-backbone-2]# getfattr -d -m . -e hex
>> .glusterfs/1f/86/1f86b432-8ec6-4246-99aa-48cc6d7b5da0
>> # file: .glusterfs/1f/86/1f86b432-8ec6-4246-99aa-48cc6d7b5da0
>>
>> security.selinux=0x73797374656d5f753a6f626a6563745f723a6574635f72756e74696d655f743a733000
>> trusted.afr.dirty=0x000000000000000000000000
>> trusted.gfid=0x1f86b4328ec6424699aa48cc6d7b5da0
>>
>> trusted.gfid2path.b48064c78d7a85c9=0x62653331383633382d653861302d346336642d393737642d3761393337616138343830362f66323863616263622d643136392d343166632d613633332d3962656634633461386534302e3531353030
>>
>> [root at lease-11 ovirt-backbone-2]# stat
>> .glusterfs/1f/86/1f86b432-8ec6-4246-99aa-48cc6d7b5da0
>> File: ‘.glusterfs/1f/86/1f86b432-8ec6-4246-99aa-48cc6d7b5da0’
>> Size: 2166784 Blocks: 4128 IO Block: 4096 regular file
>> Device: fd03h/64771d Inode: 12956094809 Links: 3
>> Access: (0660/-rw-rw----) Uid: ( 0/ root) Gid: ( 0/ root)
>> Context: system_u:object_r:etc_runtime_t:s0
>> Access: 2018-12-18 20:11:53.595208449 +0000
>> Modify: 2018-12-17 21:43:36.391580259 +0000
>> Change: 2018-12-18 19:19:25.888055392 +0000
>> Birth: -
>>
>> [root at lease-11 ovirt-backbone-2]# find . -inum 12956094809
>> ./.glusterfs/1f/86/1f86b432-8ec6-4246-99aa-48cc6d7b5da0
>> ./.shard/f28cabcb-d169-41fc-a633-9bef4c4a8e40.51500
>>
>> ================
>>
>> I don't really see any inconsistencies, except the dates on the stat.
>> However this is only after i tried moving the file out of the volumes to
>> force a heal, which does happen on the data nodes, but not on the arbiter
>> node. Before that they were also the same.
>> I've also compared the file
>> ./.shard/f28cabcb-d169-41fc-a633-9bef4c4a8e40.51500 on the 2 nodes and they
>> are exactly the same.
>>
>> Things i've further tried;
>> - gluster v heal ovirt-backbone-2 full => gluster v heal ovirt-backbone-2
>> info reports 0 entries on all nodes
>>
>> - stop each glusterd and glusterfsd, pause around 40sec and start them
>> again on each node, 1 at a time, waiting for the heal to recover before
>> moving to the next node
>>
>> - force a heal by stopping glusterd on a node and perform these steps;
>> mkdir /mnt/ovirt-backbone-2/trigger
>> rmdir /mnt/ovirt-backbone-2/trigger
>> setfattr -n trusted.non-existent-key -v abc /mnt/ovirt-backbone-2/
>> setfattr -x trusted.non-existent-key /mnt/ovirt-backbone-2/
>> start glusterd
>>
>> - gluster volume rebalance ovirt-backbone-2 start => success
>>
>> Whats further interesting is that according the mount log, the volume is
>> in split-brain;
>> [2018-12-18 10:06:04.606870] E [MSGID: 108008]
>> [afr-read-txn.c:90:afr_read_txn_refresh_done]
>> 0-ovirt-backbone-2-replicate-2: Failing FSTAT on gfid
>> 2a57d87d-fe49-4034-919b-fdb79531bf68: split-brain observed. [Input/output
>> error]
>> [2018-12-18 10:06:04.606908] E [MSGID: 133014]
>> [shard.c:1248:shard_common_stat_cbk] 0-ovirt-backbone-2-shard: stat failed:
>> 2a57d87d-fe49-4034-919b-fdb79531bf68 [Input/output error]
>> [2018-12-18 10:06:04.606927] W [fuse-bridge.c:871:fuse_attr_cbk]
>> 0-glusterfs-fuse: 428090: FSTAT()
>> /b1c2c949-aef4-4aec-999b-b179efeef732/dom_md/ids => -1 (Input/output error)
>> [2018-12-18 10:06:05.107729] E [MSGID: 108008]
>> [afr-read-txn.c:90:afr_read_txn_refresh_done]
>> 0-ovirt-backbone-2-replicate-2: Failing FSTAT on gfid
>> 2a57d87d-fe49-4034-919b-fdb79531bf68: split-brain observed. [Input/output
>> error]
>> [2018-12-18 10:06:05.107770] E [MSGID: 133014]
>> [shard.c:1248:shard_common_stat_cbk] 0-ovirt-backbone-2-shard: stat failed:
>> 2a57d87d-fe49-4034-919b-fdb79531bf68 [Input/output error]
>> [2018-12-18 10:06:05.107791] W [fuse-bridge.c:871:fuse_attr_cbk]
>> 0-glusterfs-fuse: 428091: FSTAT()
>> /b1c2c949-aef4-4aec-999b-b179efeef732/dom_md/ids => -1 (Input/output error)
>> [2018-12-18 10:06:05.537244] I [MSGID: 108006]
>> [afr-common.c:5494:afr_local_init] 0-ovirt-backbone-2-replicate-1: no
>> subvolumes up
>> [2018-12-18 10:06:05.538523] E [MSGID: 108008]
>> [afr-read-txn.c:90:afr_read_txn_refresh_done]
>> 0-ovirt-backbone-2-replicate-2: Failing STAT on gfid
>> 00000000-0000-0000-0000-000000000001: split-brain observed. [Input/output
>> error]
>> [2018-12-18 10:06:05.538685] I [MSGID: 108006]
>> [afr-common.c:5494:afr_local_init] 0-ovirt-backbone-2-replicate-1: no
>> subvolumes up
>> [2018-12-18 10:06:05.538794] I [MSGID: 108006]
>> [afr-common.c:5494:afr_local_init] 0-ovirt-backbone-2-replicate-1: no
>> subvolumes up
>> [2018-12-18 10:06:05.539342] I [MSGID: 109063]
>> [dht-layout.c:716:dht_layout_normalize] 0-ovirt-backbone-2-dht: Found
>> anomalies in /b1c2c949-aef4-4aec-999b-b179efeef732 (gfid =
>> 8c8598ce-1a52-418e-a7b4-435fee34bae8). Holes=2 overlaps=0
>> [2018-12-18 10:06:05.539372] W [MSGID: 109005]
>> [dht-selfheal.c:2158:dht_selfheal_directory] 0-ovirt-backbone-2-dht:
>> Directory selfheal failed: 2 subvolumes down.Not fixing. path =
>> /b1c2c949-aef4-4aec-999b-b179efeef732, gfid =
>> 8c8598ce-1a52-418e-a7b4-435fee34bae8
>> [2018-12-18 10:06:05.539694] I [MSGID: 108006]
>> [afr-common.c:5494:afr_local_init] 0-ovirt-backbone-2-replicate-1: no
>> subvolumes up
>> [2018-12-18 10:06:05.540652] I [MSGID: 108006]
>> [afr-common.c:5494:afr_local_init] 0-ovirt-backbone-2-replicate-1: no
>> subvolumes up
>> [2018-12-18 10:06:05.608612] E [MSGID: 108008]
>> [afr-read-txn.c:90:afr_read_txn_refresh_done]
>> 0-ovirt-backbone-2-replicate-2: Failing FSTAT on gfid
>> 2a57d87d-fe49-4034-919b-fdb79531bf68: split-brain observed. [Input/output
>> error]
>> [2018-12-18 10:06:05.608657] E [MSGID: 133014]
>> [shard.c:1248:shard_common_stat_cbk] 0-ovirt-backbone-2-shard: stat failed:
>> 2a57d87d-fe49-4034-919b-fdb79531bf68 [Input/output error]
>> [2018-12-18 10:06:05.608672] W [fuse-bridge.c:871:fuse_attr_cbk]
>> 0-glusterfs-fuse: 428096: FSTAT()
>> /b1c2c949-aef4-4aec-999b-b179efeef732/dom_md/ids => -1 (Input/output error)
>> [2018-12-18 10:06:06.109339] E [MSGID: 108008]
>> [afr-read-txn.c:90:afr_read_txn_refresh_done]
>> 0-ovirt-backbone-2-replicate-2: Failing FSTAT on gfid
>> 2a57d87d-fe49-4034-919b-fdb79531bf68: split-brain observed. [Input/output
>> error]
>> [2018-12-18 10:06:06.109378] E [MSGID: 133014]
>> [shard.c:1248:shard_common_stat_cbk] 0-ovirt-backbone-2-shard: stat failed:
>> 2a57d87d-fe49-4034-919b-fdb79531bf68 [Input/output error]
>> [2018-12-18 10:06:06.109399] W [fuse-bridge.c:871:fuse_attr_cbk]
>> 0-glusterfs-fuse: 428097: FSTAT()
>> /b1c2c949-aef4-4aec-999b-b179efeef732/dom_md/ids => -1 (Input/output error)
>>
>> #note i'm able to see ; /b1c2c949-aef4-4aec-999b-b179efeef732/dom_md/ids
>> [root at lease-11 ovirt-backbone-2]# stat
>> /mnt/ovirt-backbone-2/b1c2c949-aef4-4aec-999b-b179efeef732/dom_md/ids
>> File:
>> ‘/mnt/ovirt-backbone-2/b1c2c949-aef4-4aec-999b-b179efeef732/dom_md/ids’
>> Size: 1048576 Blocks: 2048 IO Block: 131072 regular file
>> Device: 41h/65d Inode: 10492258721813610344 Links: 1
>> Access: (0660/-rw-rw----) Uid: ( 36/ vdsm) Gid: ( 36/ kvm)
>> Context: system_u:object_r:fusefs_t:s0
>> Access: 2018-12-19 20:07:39.917573869 +0000
>> Modify: 2018-12-19 20:07:39.928573917 +0000
>> Change: 2018-12-19 20:07:39.929573921 +0000
>> Birth: -
>>
>> however checking: gluster v heal ovirt-backbone-2 info split-brain
>> reports no entries.
>>
>> I've also tried mounting the qemu image, and this works fine, i'm able to
>> see all contents;
>> losetup /dev/loop0
>> /mnt/ovirt-backbone-2/b1c2c949-aef4-4aec-999b-b179efeef732/images/f6ac9660-a84e-469e-a17c-c6dbc538af4b/d6b09501-5b79-4c92-bf10-2ed3bda1b425
>> kpartx -a /dev/loop0
>> vgscan
>> vgchange -ay slave-data
>> mkdir /mnt/slv01
>> mount /dev/mapper/slave--data-lvol0 /mnt/slv01/
>>
>> Possible causes for this issue;
>> 1. the machine "lease-11" suffered from a faulty RAM module (ECC), which
>> halted the machine and causes an invalid state. (this machine also hosts
>> other volumes, with similar configurations, which report no issue)
>> 2. after the RAM module was replaced, the VM using the backing qemu
>> image, was restored from a backup (the backup was file based within the VM
>> on a different directory). This is because some files were corrupted. The
>> backup/recovery obviously causes extra IO, possible introducing race
>> conditions? The machine did run for about 12h without issues, and in total
>> for about 36h.
>> 3. since only the client (maybe only gfapi?) reports errors, something is
>> broken there?
>>
>> The volume info;
>> root at lease-06 ~# gluster v info ovirt-backbone-2
>>
>> Volume Name: ovirt-backbone-2
>> Type: Distributed-Replicate
>> Volume ID: 85702d35-62c8-4c8c-930d-46f455a8af28
>> Status: Started
>> Snapshot Count: 0
>> Number of Bricks: 3 x (2 + 1) = 9
>> Transport-type: tcp
>> Bricks:
>> Brick1: 10.32.9.7:/data/gfs/bricks/brick1/ovirt-backbone-2
>> Brick2: 10.32.9.3:/data/gfs/bricks/brick1/ovirt-backbone-2
>> Brick3: 10.32.9.4:/data/gfs/bricks/bricka/ovirt-backbone-2 (arbiter)
>> Brick4: 10.32.9.8:/data0/gfs/bricks/brick1/ovirt-backbone-2
>> Brick5: 10.32.9.21:/data0/gfs/bricks/brick1/ovirt-backbone-2
>> Brick6: 10.32.9.5:/data/gfs/bricks/bricka/ovirt-backbone-2 (arbiter)
>> Brick7: 10.32.9.9:/data0/gfs/bricks/brick1/ovirt-backbone-2
>> Brick8: 10.32.9.20:/data0/gfs/bricks/brick1/ovirt-backbone-2
>> Brick9: 10.32.9.6:/data/gfs/bricks/bricka/ovirt-backbone-2 (arbiter)
>> Options Reconfigured:
>> nfs.disable: on
>> transport.address-family: inet
>> performance.quick-read: off
>> performance.read-ahead: off
>> performance.io-cache: off
>> performance.low-prio-threads: 32
>> network.remote-dio: enable
>> cluster.eager-lock: enable
>> cluster.quorum-type: auto
>> cluster.server-quorum-type: server
>> cluster.data-self-heal-algorithm: full
>> cluster.locking-scheme: granular
>> cluster.shd-max-threads: 8
>> cluster.shd-wait-qlength: 10000
>> features.shard: on
>> user.cifs: off
>> storage.owner-uid: 36
>> storage.owner-gid: 36
>> features.shard-block-size: 64MB
>> performance.write-behind-window-size: 512MB
>> performance.cache-size: 384MB
>> cluster.brick-multiplex: on
>>
>> The volume status;
>> root at lease-06 ~# gluster v status ovirt-backbone-2
>> Status of volume: ovirt-backbone-2
>> Gluster process TCP Port RDMA Port Online
>> Pid
>>
>> ------------------------------------------------------------------------------
>> Brick 10.32.9.7:/data/gfs/bricks/brick1/ovi
>> rt-backbone-2 49152 0 Y
>> 7727
>> Brick 10.32.9.3:/data/gfs/bricks/brick1/ovi
>> rt-backbone-2 49152 0 Y
>> 12620
>> Brick 10.32.9.4:/data/gfs/bricks/bricka/ovi
>> rt-backbone-2 49152 0 Y
>> 8794
>> Brick 10.32.9.8:/data0/gfs/bricks/brick1/ov
>> irt-backbone-2 49161 0 Y
>> 22333
>> Brick 10.32.9.21:/data0/gfs/bricks/brick1/o
>> virt-backbone-2 49152 0 Y
>> 15030
>> Brick 10.32.9.5:/data/gfs/bricks/bricka/ovi
>> rt-backbone-2 49166 0 Y
>> 24592
>> Brick 10.32.9.9:/data0/gfs/bricks/brick1/ov
>> irt-backbone-2 49153 0 Y
>> 20148
>> Brick 10.32.9.20:/data0/gfs/bricks/brick1/o
>> virt-backbone-2 49154 0 Y
>> 15413
>> Brick 10.32.9.6:/data/gfs/bricks/bricka/ovi
>> rt-backbone-2 49152 0 Y
>> 43120
>> Self-heal Daemon on localhost N/A N/A Y
>> 44587
>> Self-heal Daemon on 10.201.0.2 N/A N/A Y
>> 8401
>> Self-heal Daemon on 10.201.0.5 N/A N/A Y
>> 11038
>> Self-heal Daemon on 10.201.0.8 N/A N/A Y
>> 9513
>> Self-heal Daemon on 10.32.9.4 N/A N/A Y
>> 23736
>> Self-heal Daemon on 10.32.9.20 N/A N/A Y
>> 2738
>> Self-heal Daemon on 10.32.9.3 N/A N/A Y
>> 25598
>> Self-heal Daemon on 10.32.9.5 N/A N/A Y
>> 511
>> Self-heal Daemon on 10.32.9.9 N/A N/A Y
>> 23357
>> Self-heal Daemon on 10.32.9.8 N/A N/A Y
>> 15225
>> Self-heal Daemon on 10.32.9.7 N/A N/A Y
>> 25781
>> Self-heal Daemon on 10.32.9.21 N/A N/A Y
>> 5034
>>
>> Task Status of Volume ovirt-backbone-2
>>
>> ------------------------------------------------------------------------------
>> Task : Rebalance
>> ID : 6dfbac43-0125-4568-9ac3-a2c453faaa3d
>> Status : completed
>>
>> gluster version is @3.12.15 and cluster.op-version=31202
>>
>> ========================
>>
>> It would be nice to know if it's possible to mark the files as not stale
>> or if i should investigate other things?
>> Or should we consider this volume lost?
>> Also checking the code at;
>> https://github.com/gluster/glusterfs/blob/master/xlators/features/shard/src/shard.c
>> it seems the functions shifted quite some (line 1724 vs. 2243), so maybe
>> it's fixed in a future version?
>> Any thoughts are welcome.
>>
>> Thanks Olaf
>>
>>
>>
>>
>>
>>
>>
>>
>>
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