[Gluster-users] Conv distr-repl 2 to repl 3 arb 1 now 2 of 6 arb bricks won't get healed

Mon May 31 09:28:11 UTC 2021

Thanks Strahil,

unfortunately I cannot connect as the mount is denied as in mount.log provided.
IPs > n.n.n..100 are clients and simply cannot mount the volume. When killing the arb pids on node2 new clients can mount the volume. When bringing them up again I experience the same problem.

I wonder why the root dir on the arb bricks has wrong UID:GID.
I added regular data bricks before without any problems on node2.

Also when executing "watch df"

I see

/dev/md50 11700224 33108 11667116 1% /var/bricks/arb_0
..

/dev/md50 11700224 33128 11667096 1% /var/bricks/arb_0

..

/dev/md50 11700224 33108 11667116 1% /var/bricks/arb_0

So heal daemon might try to do something, which isn't working. Thus I chowned UID:GID of ../arb_0/brick manually to match, but it did not work either.

As I added all 6 arbs at once and 4 are working as expected I really don't get what's wrong with these...

A.

"Strahil Nikolov" hunter86_bg at yahoo.com – 31. Mai 2021 11:12
> For the arb_0 I seeonly 8 clients , while there should be 12 clients:
> Brick : 192.168.0.40:/var/bricks/0/brick
> Clients connected : 12
>
> Brick : 192.168.0.41:/var/bricks/0/brick
> Clients connected : 12
>
> Brick : 192.168.0.80:/var/bricks/arb_0/brick
> Clients connected : 8
>
> Can you try to reconnect them. The most simple way is to kill the arbiter process and 'gluster volume start force' , but always verify that you have both data bricks up and running.
>
>
>
> Yet, this doesn't explain why the heal daemon is not able to replicate properly.
>
>
>
> Best Regards,
> Strahil Nikolov
> >
> > Meanwhile I tried reset-brick on one of the failing arbiters on node2, but with same results. The behaviour is reproducible, arbiter stays empty.
> >
> > node0: 192.168.0.40
> >
> > node1: 192.168.0.41
> >
> > node3: 192.168.0.80
> >
> > volume info:
> >
> > Volume Name: gv0
> > Type: Distributed-Replicate
> > Volume ID: 9bafc4d2-d9b6-4b6d-a631-1cf42d1d2559
> > Status: Started
> > Snapshot Count: 0
> > Number of Bricks: 6 x (2 + 1) = 18
> > Transport-type: tcp
> > Bricks:
> > Brick1: 192.168.0.40:/var/bricks/0/brick
> > Brick2: 192.168.0.41:/var/bricks/0/brick
> > Brick3: 192.168.0.80:/var/bricks/arb_0/brick (arbiter)
> > Brick4: 192.168.0.40:/var/bricks/2/brick
> > Brick5: 192.168.0.80:/var/bricks/2/brick
> > Brick6: 192.168.0.41:/var/bricks/arb_1/brick (arbiter)
> > Brick7: 192.168.0.40:/var/bricks/1/brick
> > Brick8: 192.168.0.41:/var/bricks/1/brick
> > Brick9: 192.168.0.80:/var/bricks/arb_1/brick (arbiter)
> > Brick10: 192.168.0.40:/var/bricks/3/brick
> > Brick11: 192.168.0.80:/var/bricks/3/brick
> > Brick12: 192.168.0.41:/var/bricks/arb_0/brick (arbiter)
> > Brick13: 192.168.0.41:/var/bricks/3/brick
> > Brick14: 192.168.0.80:/var/bricks/4/brick
> > Brick15: 192.168.0.40:/var/bricks/arb_0/brick (arbiter)
> > Brick16: 192.168.0.41:/var/bricks/2/brick
> > Brick17: 192.168.0.80:/var/bricks/5/brick
> > Brick18: 192.168.0.40:/var/bricks/arb_1/brick (arbiter)
> > Options Reconfigured:
> > cluster.min-free-inodes: 6%
> > cluster.min-free-disk: 2%
> > performance.md-cache-timeout: 600
> > cluster.rebal-throttle: lazy
> > features.scrub-freq: monthly
> > features.scrub-throttle: lazy
> > features.scrub: Inactive
> > features.bitrot: off
> > cluster.server-quorum-type: none
> > performance.cache-refresh-timeout: 10
> > performance.cache-max-file-size: 64MB
> > performance.cache-size: 781901824
> > auth.allow: /(192.168.0.*),/usr/andreas(192.168.0.120),/usr/otis(192.168.0.168),/usr/otis(192.168.0.111),/usr/otis(192.168.0.249),/media(192.168.0.*),/virt(192.168.0.*),/cloud(192.168.0.247),/zm(192.168.0.136)
> > performance.cache-invalidation: on
> > performance.stat-prefetch: on
> > features.cache-invalidation-timeout: 600
> > cluster.quorum-type: auto
> > features.cache-invalidation: on
> > nfs.disable: on
> > transport.address-family: inet
> > cluster.self-heal-daemon: on
> > cluster.server-quorum-ratio: 51%
> >
> > volume status:
> >
> > Status of volume: gv0
> > Gluster process TCP Port RDMA Port Online Pid
> > ------------------------------------------------------------------------------
> > Brick 192.168.0.40:/var/bricks/0/brick 49155 0 Y 713066
> > Brick 192.168.0.41:/var/bricks/0/brick 49152 0 Y 2082
> > Brick 192.168.0.80:/var/bricks/arb_0/brick 49152 0 Y 26186
> > Brick 192.168.0.40:/var/bricks/2/brick 49156 0 Y 713075
> > Brick 192.168.0.80:/var/bricks/2/brick 49154 0 Y 325
> > Brick 192.168.0.41:/var/bricks/arb_1/brick 49157 0 Y 1746903
> > Brick 192.168.0.40:/var/bricks/1/brick 49157 0 Y 713084
> > Brick 192.168.0.41:/var/bricks/1/brick 49153 0 Y 14104
> > Brick 192.168.0.80:/var/bricks/arb_1/brick 49159 0 Y 2314
> > Brick 192.168.0.40:/var/bricks/3/brick 49153 0 Y 2978692
> > Brick 192.168.0.80:/var/bricks/3/brick 49155 0 Y 23269
> > Brick 192.168.0.41:/var/bricks/arb_0/brick 49158 0 Y 1746942
> > Brick 192.168.0.41:/var/bricks/3/brick 49155 0 Y 897058
> > Brick 192.168.0.80:/var/bricks/4/brick 49156 0 Y 27433
> > Brick 192.168.0.40:/var/bricks/arb_0/brick 49152 0 Y 3561115
> > Brick 192.168.0.41:/var/bricks/2/brick 49156 0 Y 902602
> > Brick 192.168.0.80:/var/bricks/5/brick 49157 0 Y 29522
> > Brick 192.168.0.40:/var/bricks/arb_1/brick 49154 0 Y 3561159
> > Self-heal Daemon on localhost N/A N/A Y 26199
> > Self-heal Daemon on 192.168.0.41 N/A N/A Y 2240635
> > Self-heal Daemon on 192.168.0.40 N/A N/A Y 3912810
> >
> > Task Status of Volume gv0
> > ------------------------------------------------------------------------------
> > There are no active volume tasks
> >
> > volume heal info summary:
> >
> > Brick 192.168.0.40:/var/bricks/0/brick <--- contains 100177 files in 25015 dirs
> > Status: Connected
> > Total Number of entries: 1006
> > Number of entries in heal pending: 1006
> > Number of entries in split-brain: 0
> > Number of entries possibly healing: 0
> >
> > Brick 192.168.0.41:/var/bricks/0/brick
> > Status: Connected
> > Total Number of entries: 1006
> > Number of entries in heal pending: 1006
> > Number of entries in split-brain: 0
> > Number of entries possibly healing: 0
> >
> > Brick 192.168.0.80:/var/bricks/arb_0/brick
> > Status: Connected
> > Total Number of entries: 0
> > Number of entries in heal pending: 0
> > Number of entries in split-brain: 0
> > Number of entries possibly healing: 0
> >
> > Brick 192.168.0.40:/var/bricks/2/brick
> > Status: Connected
> > Total Number of entries: 0
> > Number of entries in heal pending: 0
> > Number of entries in split-brain: 0
> > Number of entries possibly healing: 0
> >
> > Brick 192.168.0.80:/var/bricks/2/brick
> > Status: Connected
> > Total Number of entries: 0
> > Number of entries in heal pending: 0
> > Number of entries in split-brain: 0
> > Number of entries possibly healing: 0
> >
> > Brick 192.168.0.41:/var/bricks/arb_1/brick
> > Status: Connected
> > Total Number of entries: 0
> > Number of entries in heal pending: 0
> > Number of entries in split-brain: 0
> > Number of entries possibly healing: 0
> >
> > Brick 192.168.0.40:/var/bricks/1/brick
> > Status: Connected
> > Total Number of entries: 1006
> > Number of entries in heal pending: 1006
> > Number of entries in split-brain: 0
> > Number of entries possibly healing: 0
> >
> > Brick 192.168.0.41:/var/bricks/1/brick
> > Status: Connected
> > Total Number of entries: 1006
> > Number of entries in heal pending: 1006
> > Number of entries in split-brain: 0
> > Number of entries possibly healing: 0
> >
> > Brick 192.168.0.80:/var/bricks/arb_1/brick
> > Status: Connected
> > Total Number of entries: 0
> > Number of entries in heal pending: 0
> > Number of entries in split-brain: 0
> > Number of entries possibly healing: 0
> >
> > Brick 192.168.0.40:/var/bricks/3/brick
> > Status: Connected
> > Total Number of entries: 0
> > Number of entries in heal pending: 0
> > Number of entries in split-brain: 0
> > Number of entries possibly healing: 0
> >
> > Brick 192.168.0.80:/var/bricks/3/brick
> > Status: Connected
> > Total Number of entries: 0
> > Number of entries in heal pending: 0
> > Number of entries in split-brain: 0
> > Number of entries possibly healing: 0
> >
> > Brick 192.168.0.41:/var/bricks/arb_0/brick
> > Status: Connected
> > Total Number of entries: 0
> > Number of entries in heal pending: 0
> > Number of entries in split-brain: 0
> > Number of entries possibly healing: 0
> >
> > Brick 192.168.0.41:/var/bricks/3/brick
> > Status: Connected
> > Total Number of entries: 0
> > Number of entries in heal pending: 0
> > Number of entries in split-brain: 0
> > Number of entries possibly healing: 0
> >
> > Brick 192.168.0.80:/var/bricks/4/brick
> > Status: Connected
> > Total Number of entries: 0
> > Number of entries in heal pending: 0
> > Number of entries in split-brain: 0
> > Number of entries possibly healing: 0
> >
> > Brick 192.168.0.40:/var/bricks/arb_0/brick
> > Status: Connected
> > Total Number of entries: 0
> > Number of entries in heal pending: 0
> > Number of entries in split-brain: 0
> > Number of entries possibly healing: 0
> >
> > Brick 192.168.0.41:/var/bricks/2/brick
> > Status: Connected
> > Total Number of entries: 0
> > Number of entries in heal pending: 0
> > Number of entries in split-brain: 0
> > Number of entries possibly healing: 0
> >
> > Brick 192.168.0.80:/var/bricks/5/brick
> > Status: Connected
> > Total Number of entries: 0
> > Number of entries in heal pending: 0
> > Number of entries in split-brain: 0
> > Number of entries possibly healing: 0
> >
> > Brick 192.168.0.40:/var/bricks/arb_1/brick
> > Status: Connected
> > Total Number of entries: 0
> > Number of entries in heal pending: 0
> > Number of entries in split-brain: 0
> > Number of entries possibly healing: 0
> >
> > client-list:
> >
> > Client connections for volume gv0
> > Name count
> > ----- ------
> > fuse 5
> > gfapi.ganesha.nfsd 3
> > glustershd 3
> >
> > total clients for volume gv0 : 11
> > -----------------------------------------------------------------
> >
> > all clients: https://pro.hostit.de/nextcloud/index.php/s/tWdHox3aqb3qqbG
> >
> > failing mnt.log https://pro.hostit.de/nextcloud/index.php/s/2E2NLnXNsTy7EQe
> >
> > Thank you.
> >
> > A.
> >
> > "Strahil Nikolov" hunter86_bg at yahoo.com – 31. Mai 2021 05:23
> > > Can you provide gluster volume info , gluster volume status and gluster volume heal info summary and most probably gluster volume status all clients/client-list
> > >
> > >
> > > Best Regards,
> > > Strahil Nikolov
> > >
> > > > On Sun, May 30, 2021 at 15:17, a.schwibbe at gmx.net
> > > > wrote:
> > > >
> > > > I am seeking help here after looking for solutions on the web for my distributed-replicated volume.
> > > >
> > > > My volume is operated since v3.10 and I upgraded through to 7.9, replaced nodes, replaced bricks without a problem. I love it.
> > > >
> > > > Finally I wanted to extend my 6x2 distributed replicated volume with arbiters for better split-brain protection.
> > > >
> > > >
> > > > So I add-brick with replication 3 arbiter 1 (as I had a 6x2 I obviously added 6 arb bricks) and it successfully converted to 6 x (2 +1) and self-heal immideately started. Looking good.
> > > >
> > > >
> > > >
> > > > Version: 7.9
> > > >
> > > >
> > > > Number of Bricks: 6 x (2 + 1) = 18
> > > >
> > > >
> > > > cluster.max-op-version: 70200
> > > >
> > > >
> > > > Peers: 3 (node[0..2])
> > > >
> > > >
> > > > Layout
> > > >
> > > >
> > > > |node0 |node1 |node2
> > > >
> > > > |brick0 |brick0 |arbit0
> > > >
> > > >
> > > > |arbit1 |brick1 |brick1
> > > >
> > > >
> > > > ....
> > > >
> > > >
> > > >
> > > > I then recognized that arbiter volumes on node0 & node1 have been healed successfully.
> > > >
> > > > Unfortunately all arbiter volumes on node2 have not been healed!
> > > >
> > > > I realized that the main dir on my arb mount point has been added (mount point /var/brick/arb_0 now contains dir "brick") however this dir on _all_ other bricks has numeric ID 33, but on this on it has 0). The brick dir on the faulty arb-volumes does contain ".glusterfs", however it has only very few entries. Other than that "brick" is empty.
> > > >
> > > > At that point I changed brick dir owner with chown to 33:33 and hoped for self-heal to work. It did not.
> > > >
> > > > I hoped a rebalance fix-layout would fix things. It did not.
> > > >
> > > > I hoped for a glusterd restart on node2 (as this is happening to both arb volumes on this node exclusively) would help. It did not.
> > > >
> > > >
> > > > Active mount points via nfs-ganesha or fuse continue to work.
> > > >
> > > > Existing clients cause errors in the arb-brick logs on node2 for missing files or dirs, but clients seem not affected. r/w operations work.
> > > >
> > > >
> > > > New clients are not able to fuse mount the volume for "authentication error".
> > > >
> > > > heal statistics heal-count show several hundred files need healing, this count is rising. Watching df on the arb-brick mount point on node2 shows every now and then a few bytes written, but then removed immideately after that.
> > > >
> > > >
> > > > Any help/recommendation for you highly appreciated.
> > > >
> > > > Thank you!
> > > >
> > > >
> > > > A.
> > > >
> > > > ________
> > > >
> > > >
> > > >
> > > >
> > > >
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> > > >
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> > > > Gluster-users mailing list
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> > > >
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> >
> >