[Gluster-users] Files from one brick missing from readdir

[Nithya Balachandran]

On 9 July 2018 at 14:20, Niels de Vos <ndevos at redhat.com> wrote:

> On Mon, Jul 09, 2018 at 01:30:23PM +0530, Nithya Balachandran wrote:
> > Hi Hans,
> >
> > Another user has reported something similar and we are still debugging
> this.
> >
> > Would you mind taking a tcpdump of the client while listing the directory
> > from a FUSE client and sending it to me? Please use
> > tcpdump -i any -s 0 -w /var/tmp/dirls.pcap tcp and not port 22
>
> Last week I came across a patch that fixes a bug in the FUSE kernel
> module:
>   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/
> linux.git/commit/?id=c6cdd51404b7ac12dd95173ddfc548c59ecf037f
>
> This was included in linux-4.14 but has been marked for backporting to
> older kernels as well. If the description matches the experienced
> behaviour, running with an updates (or patched) kernel may help.
>
>
This is interesting but it won't help in this case. The issue is with
Gluster.



> Niels
>
>
> >
> >
> > Also, please send the output of gluster volume info and gluster volume
> get
> > <volname> all.
> >
> > Thanks,
> > Nithya
> >
> >
> > On 9 July 2018 at 12:51, Hans Henrik Happe <happe at nbi.dk> wrote:
> >
> > > Hi,
> > >
> > > After an upgrade from 3.7 -> 3.10 -> 3.12.9 that seemed to go smoothly,
> > > we have experienced missing files and dirs when listing directories.
> > >
> > > We are using a distributed setup with 20 bricks (no redundance from
> > > glusterfs).
> > >
> > > The dirs and files can be referenced directly, but does not show up in
> > > listings (readdir, i.e. ls). Renaming them works, but they still does
> > > not show up.
> > >
> > > The first time we discovered this, we noticed that files slowly
> > > reappeared and finally all were there. After that we started a
> > > fix-layout which is still running (5mio dirs). After this we would
> > > compare brick files to the mounted fs.
> > >
> > > Yesterday we again discovered some missing files in a dir. After some
> > > poking around we found that all missing files were located on the same
> > > brick.
> > >
> > > Comparing dir xattr did not give us a clue:
> > >
> > >
> > > Brick with missing files:
> > >
> > > # getfattr  -m . -d -e hex backup
> > > # file: backup
> > > trusted.gfid=0x8613f6e0317141918b42d8c8063ffbce
> > > trusted.glusterfs.dht=0x0000000100000000b2169fa3bf11b4e7
> > > trusted.glusterfs.quota.6e0ab807-6eed-4af1-92b8-0db3ca7a19e0.contri.1=
> > > 0x00000000d65e340000000000000000750000000000000001
> > > trusted.glusterfs.quota.dirty=0x3000
> > > trusted.glusterfs.quota.size.1=0x00000000d65e3400000000000000
> > > 00750000000000000001
> > >
> > > Other brick:
> > >
> > > # getfattr  -m . -d -e hex backup
> > > # file: backup
> > > trusted.gfid=0x8613f6e0317141918b42d8c8063ffbce
> > > trusted.glusterfs.dht=0x0000000100000000bf11b4e8cbe5e488
> > > trusted.glusterfs.quota.6e0ab807-6eed-4af1-92b8-0db3ca7a19e0.contri.1=
> > > 0x00000000b03aa80000000000000000700000000000000001
> > > trusted.glusterfs.quota.dirty=0x3000
> > > trusted.glusterfs.quota.size.1=0x00000000b03aa800000000000000
> > > 00700000000000000001
> > >
> > >
> > > Anyone who experienced this or have some clues to what might be wrong?
> > >
> > > Cheers,
> > > Hans Henrik
> > > _______________________________________________
> > > Gluster-users mailing list
> > > Gluster-users at gluster.org
> > > https://lists.gluster.org/mailman/listinfo/gluster-users
> > >
>
> > _______________________________________________
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> > Gluster-users at gluster.org
> > https://lists.gluster.org/mailman/listinfo/gluster-users
>
>
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