[Gluster-users] Quick way to fix stale gfids?
Diego Zuccato
diego.zuccato at unibo.it
Tue Feb 7 14:33:23 UTC 2023
The contents do not match exactly, but the only difference is the
"option shared-brick-count" line that sometimes is 0 and sometimes 1.
The command you gave could be useful for the files that still needs
healing with the source still present, but the files related to the
stale gfids have been deleted, so "find -samefile" won't find anything.
For the other files reported by heal info, I saved the output to
'healinfo', then:
for T in $(grep '^/' healinfo |sort|uniq); do stat /mnt/scratch$T >
/dev/null; done
but I still see a lot of 'Transport endpoint is not connected' and
'Stale file handle' errors :( And many 'No such file or directory'...
I don't understand the first two errors, since /mnt/scratch have been
freshly mounted after enabling client healing, and gluster v info does
not highlight unconnected/down bricks.
Diego
Il 06/02/2023 22:46, Strahil Nikolov ha scritto:
> I'm not sure if the md5sum has to match , but at least the content
> should do.
> In modern versions of GlusterFS the client side healing is disabled ,
> but it's worth trying.
> You will need to enable cluster.metadata-self-heal,
> cluster.data-self-heal and cluster.entry-self-heal and then create a
> small one-liner that identifies the names of the files/dirs from the
> volume heal ,so you can stat them through the FUSE.
>
> Something like this:
>
>
> for i in $(gluster volume heal <VOL> info | awk -F '<gfid:|>' '/gfid:/
> {print $2}'); do find /PATH/TO/BRICK/ -samefile
> /PATH/TO/BRICK/.glusterfs/${i:0:2}/${i:2:2}/$i | awk '!/.glusterfs/
> {gsub("/PATH/TO/BRICK", "stat /MY/FUSE/MOUNTPOINT", $0); print $0}' ; done
>
> Then Just copy paste the output and you will trigger the client side
> heal only on the affected gfids.
>
> Best Regards,
> Strahil Nikolov
> В понеделник, 6 февруари 2023 г., 10:19:02 ч. Гринуич+2, Diego Zuccato
> <diego.zuccato at unibo.it> написа:
>
>
> Ops... Reincluding the list that got excluded in my previous answer :(
>
> I generated md5sums of all files in vols/ on clustor02 and compared to
> the other nodes (clustor00 and clustor01).
> There are differences in volfiles (shouldn't it always be 1, since every
> data brick is on its own fs? quorum bricks, OTOH, share a single
> partition on SSD and should always be 15, but in both cases sometimes
> it's 0).
>
> I nearly got a stroke when I saw diff output for 'info' files, but once
> I sorted 'em their contents matched. Pfhew!
>
> Diego
>
> Il 03/02/2023 19:01, Strahil Nikolov ha scritto:
> > This one doesn't look good:
> >
> >
> > [2023-02-03 07:45:46.896924 +0000] E [MSGID: 114079]
> > [client-handshake.c:1253:client_query_portmap] 0-cluster_data-client-48:
> > remote-subvolume not set in volfile []
> >
> >
> > Can you compare all vol files in /var/lib/glusterd/vols/ between the
> nodes ?
> > I have the suspicioun that there is a vol file mismatch (maybe
> > /var/lib/glusterd/vols/<VOLUME_NAME>/*-shd.vol).
> >
> > Best Regards,
> > Strahil Nikolov
> >
> > On Fri, Feb 3, 2023 at 12:20, Diego Zuccato
> > <diego.zuccato at unibo.it <mailto:diego.zuccato at unibo.it>> wrote:
> > Can't see anything relevant in glfsheal log, just messages related to
> > the crash of one of the nodes (the one that had the mobo replaced... I
> > fear some on-disk structures could have been silently damaged by RAM
> > errors and that makes gluster processes crash, or it's just an issue
> > with enabling brick-multiplex).
> > -8<--
> > [2023-02-03 07:45:46.896924 +0000] E [MSGID: 114079]
> > [client-handshake.c:1253:client_query_portmap]
> > 0-cluster_data-client-48:
> > remote-subvolume not set in volfile []
> > [2023-02-03 07:45:46.897282 +0000] E
> > [rpc-clnt.c:331:saved_frames_unwind] (-->
> >
> /lib/x86_64-linux-gnu/libglusterfs.so.0(_gf_log_callingfn+0x195)[0x7fce0c867b95]
> > (--> /lib/x86_64-linux-gnu/libgfrpc.so.0(+0x72fc)[0x7fce0c0ca2fc] (-->
> >
> /lib/x86_64-linux-gnu/libgfrpc.so.0(rpc_clnt_connection_cleanup+0x109)[0x7fce0c0d2419]
> > (--> /lib/x86_64-linux-gnu/libgfrpc.so.0(+0x10308)[0x7fce0c0d3308]
> (-->
> >
> /lib/x86_64-linux-gnu/libgfrpc.so.0(rpc_transport_notify+0x26)[0x7fce0c0ce7e6]
> > ))))) 0-cluster_data-client-48: forced unwinding frame type(GF-DUMP)
> > op(NULL(2)) called at 2023-02-03 07:45:46.891054 +0000 (xid=0x13)
> > -8<--
> >
> > Well, actually I *KNOW* the files outside .glusterfs have been deleted
> > (by me :) ). That's why I call those 'stale' gfids.
> > Affected entries under .glusterfs have usually link count = 1 =>
> > nothing
> > 'find' can find.
> > Since I already recovered those files (before deleting from bricks),
> > can
> > .glusterfs entries be deleted too or should I check something else?
> > Maybe I should create a script that finds all files/dirs (not
> symlinks,
> > IIUC) in .glusterfs on all bricks/arbiters and moves 'em to a temp
> dir?
> >
> > Diego
> >
> > Il 02/02/2023 23:35, Strahil Nikolov ha scritto:
> > > Any issues reported in /var/log/glusterfs/glfsheal-*.log ?
> > >
> > > The easiest way to identify the affected entries is to run:
> > > find /FULL/PATH/TO/BRICK/ -samefile
> > >
> >
> /FULL/PATH/TO/BRICK/.glusterfs/57/e4/57e428c7-6bed-4eb3-b9bd-02ca4c46657a
> > >
> > >
> > > Best Regards,
> > > Strahil Nikolov
> > >
> > >
> > > В вторник, 31 януари 2023 г., 11:58:24 ч. Гринуич+2, Diego Zuccato
> > > <diego.zuccato at unibo.it <mailto:diego.zuccato at unibo.it>
> <mailto:diego.zuccato at unibo.it <mailto:diego.zuccato at unibo.it>>> написа:
> > >
> > >
> > > Hello all.
> > >
> > > I've had one of the 3 nodes serving a "replica 3 arbiter 1"
> down for
> > > some days (apparently RAM issues, but actually failing mobo).
> > > The other nodes have had some issues (RAM exhaustion, old problem
> > > already ticketed but still no solution) and some brick processes
> > > coredumped. Restarting the processes allowed the cluster to
> continue
> > > working. Mostly.
> > >
> > > After the third server got fixed I started a heal, but files
> > didn't get
> > > healed and count (by "ls -l
> > > /srv/bricks/*/d/.glusterfs/indices/xattrop/|grep ^-|wc -l")
> did not
> > > decrease over 2 days. So, to recover I copied files from bricks
> > to temp
> > > storage (keeping both copies of conflicting files with different
> > > contents), removed files on bricks and arbiters, and finally
> > copied back
> > > from temp storage to the volume.
> > >
> > > Now the files are accessible but I still see lots of entries like
> > > <gfid:57e428c7-6bed-4eb3-b9bd-02ca4c46657a>
> > >
> > > IIUC that's due to a mismatch between .glusterfs/ contents and
> normal
> > > hierarchy. Is there some tool to speed up the cleanup?
> > >
> > > Tks.
> > >
> > > --
> > > Diego Zuccato
> > > DIFA - Dip. di Fisica e Astronomia
> > > Servizi Informatici
> > > Alma Mater Studiorum - Università di Bologna
> > > V.le Berti-Pichat 6/2 - 40127 Bologna - Italy
> > > tel.: +39 051 20 95786
> > > ________
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> >
> >
> > --
> > Diego Zuccato
> > DIFA - Dip. di Fisica e Astronomia
> > Servizi Informatici
> > Alma Mater Studiorum - Università di Bologna
> > V.le Berti-Pichat 6/2 - 40127 Bologna - Italy
> > tel.: +39 051 20 95786
> >
>
> --
> Diego Zuccato
> DIFA - Dip. di Fisica e Astronomia
> Servizi Informatici
> Alma Mater Studiorum - Università di Bologna
> V.le Berti-Pichat 6/2 - 40127 Bologna - Italy
> tel.: +39 051 20 95786
--
Diego Zuccato
DIFA - Dip. di Fisica e Astronomia
Servizi Informatici
Alma Mater Studiorum - Università di Bologna
V.le Berti-Pichat 6/2 - 40127 Bologna - Italy
tel.: +39 051 20 95786
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