Krutika Dhananjay
2015-Mar-11 12:02 UTC
[Gluster-users] Input/output error when trying to access a file on client
Hi, Have you gone through https://github.com/gluster/glusterfs/blob/master/doc/debugging/split-brain.md ? If not, could you go through that once and try the steps given there? Do let us know if something is not clear in the doc. -Krutika ----- Original Message -----> From: "Alessandro Ipe" <Alessandro.Ipe at meteo.be> > To: gluster-users at gluster.org > Sent: Wednesday, March 11, 2015 4:54:09 PM > Subject: Re: [Gluster-users] Input/output error when trying to access a file > on client> Well, it is even worse. Now when doing a "ls -R" on the volume results in a > lot of> [2015-03-11 11:18:31.957505] E > [afr-self-heal-common.c:233:afr_sh_print_split_brain_log] 0-md1-replicate-2: > Unable to self-heal contents of '/library' (possible split-brain). Please > delete the file from all but the preferred subvolume.- Pending matrix: [ [ 0 > 2 ] [ 1 0 ] ] > [2015-03-11 11:18:31.957692] E > [afr-self-heal-common.c:2868:afr_log_self_heal_completion_status] > 0-md1-replicate-2: metadata self heal failed, on /library> I am desperate...> A.> On Wednesday 11 March 2015 12:05:33 you wrote: > > Hi, > > > > > > When trying to access a file on a gluster client (through fuse), I get an > > "Input/output error" message. > > > > Getting the attributes for the file gives me for the first brick > > # file: data/glusterfs/md1/brick1/kvm/hail/hail_home.qcow2 > > trusted.afr.md1-client-2=0sAAAAAAAAAAAAAAAA > > trusted.afr.md1-client-3=0sAAABdAAAAAAAAAAA > > trusted.gfid=0sOCFPGCdrQ9uyq2yTTPCKqQ=> > > > while for the second (replicate) brick > > # file: data/glusterfs/md1/brick1/kvm/hail/hail_home.qcow2 > > trusted.afr.md1-client-2=0sAAABJAAAAAAAAAAA > > trusted.afr.md1-client-3=0sAAAAAAAAAAAAAAAA > > trusted.gfid=0sOCFPGCdrQ9uyq2yTTPCKqQ=> > > > It seems that I have a split-brain. How can I solve this issue by resetting > > the attributes, please ? > > > > > > Thanks, > > > > > > Alessandro. > > > > =================> > gluster volume info md1 > > > > Volume Name: md1 > > Type: Distributed-Replicate > > Volume ID: 6da4b915-1def-4df4-a41c-2f3300ebf16b > > Status: Started > > Number of Bricks: 3 x 2 = 6 > > Transport-type: tcp > > Bricks: > > Brick1: tsunami1:/data/glusterfs/md1/brick1 > > Brick2: tsunami2:/data/glusterfs/md1/brick1 > > Brick3: tsunami3:/data/glusterfs/md1/brick1 > > Brick4: tsunami4:/data/glusterfs/md1/brick1 > > Brick5: tsunami5:/data/glusterfs/md1/brick1 > > Brick6: tsunami6:/data/glusterfs/md1/brick1 > > Options Reconfigured: > > server.allow-insecure: on > > cluster.read-hash-mode: 2 > > features.quota: off > > performance.write-behind: on > > performance.write-behind-window-size: 4MB > > performance.flush-behind: off > > performance.io-thread-count: 64 > > performance.cache-size: 512MB > > nfs.disable: on > > cluster.lookup-unhashed: off> _______________________________________________ > Gluster-users mailing list > Gluster-users at gluster.org > http://www.gluster.org/mailman/listinfo/gluster-users-------------- next part -------------- An HTML attachment was scrubbed... URL: <http://www.gluster.org/pipermail/gluster-users/attachments/20150311/bad62d32/attachment.html>
Alessandro Ipe
2015-Mar-12 10:33 UTC
[Gluster-users] Input/output error when trying to access a file on client
Hi, "gluster volume heal md1 info split-brain" returns approximatively 2000 files (already divided by 2 due to replicate volume). So manually repairing each split-brain is unfeasable. Before scripting some procedure, I need to be sure that I will not harm further the gluster system. Moreover, I noticed that the messages printed in the logs are all about directories, e.g. [2015-03-12 10:06:53.423856] E [afr-self-heal-common.c:233:afr_sh_print_split_brain_log] 0-md1-replicate-1: Unable to self-heal contents of '/root' (possible split-brain). Please delete the file from all but the preferred subvolume.- Pending matrix: [ [ 0 1 ] [ 1 0 ] ] [2015-03-12 10:06:53.424005] E [afr-self-heal-common.c:233:afr_sh_print_split_brain_log] 0-md1-replicate-2: Unable to self-heal contents of '/root' (possible split-brain). Please delete the file from all but the preferred subvolume.- Pending matrix: [ [ 0 1 ] [ 1 0 ] ] [2015-03-12 10:06:53.424110] E [afr-self-heal-common.c:2868:afr_log_self_heal_completion_status] 0-md1-replicate-1: metadata self heal failed, on /root [2015-03-12 10:06:53.424290] E [afr-self-heal-common.c:2868:afr_log_self_heal_completion_status] 0-md1-replicate-2: metadata self heal failed, on /root Getting the attributes of that directory on each brick gives me for the first # file: data/glusterfs/md1/brick1/root trusted.afr.md1-client-0=0sAAAAAAAAAAAAAAAA trusted.afr.md1-client-1=0sAAAAAAAAAAAAAAAA trusted.gfid=0s3DmMvSq0QOyf7T1ZN2VPSw=trusted.glusterfs.dht=0sAAAAAQAAAACqqqqq/////w= and for the second # file: data/glusterfs/md1/brick1/root trusted.afr.md1-client-0=0sAAAAAAAAAAAAAAAA trusted.afr.md1-client-1=0sAAAAAAAAAAAAAAAA trusted.gfid=0s3DmMvSq0QOyf7T1ZN2VPSw=trusted.glusterfs.dht=0sAAAAAQAAAACqqqqq/////w= so it seems that there are both rigorously identical. However, according to your split -brain tutorial, none of them has 0x000000000000000000000000. What 0sAAAAAAAAAAAAAAAA means in fact ? Should I change both attributes on each directory to 0x000000000000000000000000 ? Many thanks, A. On Wednesday 11 March 2015 08:02:56 Krutika Dhananjay wrote: Hi, Have you gone through https://github.com/gluster/glusterfs/blob/master/doc/debugging/split-brain.md[1] ? If not, could you go through that once and try the steps given there? Do let us know if something is not clear in the doc. -Krutika -------------------- *From: *"Alessandro Ipe" <Alessandro.Ipe at meteo.be> *To: *gluster-users at gluster.org *Sent: *Wednesday, March 11, 2015 4:54:09 PM *Subject: *Re: [Gluster-users] Input/output error when trying to access a file on client Well, it is even worse. Now when doing a "ls -R" on the volume results in a lot of [2015-03-11 11:18:31.957505] E [afr-self-heal-common.c:233:afr_sh_print_split_brain_log] 0-md1-replicate-2: Unable to self-heal contents of '/library' (possible split-brain). Please delete the file from all but the preferred subvolume.- Pending matrix: [ [ 0 2 ] [ 1 0 ] ][2015-03-11 11:18:31.957692] E [afr-self-heal-common.c:2868:afr_log_self_heal_completion_status] 0-md1-replicate-2: metadata self heal failed, on /library I am desperate... _______________________________________________Gluster-users mailing listGluster-users at gluster.orghttp://www.gluster.org/mailman/listinfo/gluster-users -------- [1] https://github.com/gluster/glusterfs/blob/master/doc/debugging/split-brain.md -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://www.gluster.org/pipermail/gluster-users/attachments/20150312/2bab0946/attachment.html>