Re: [Gluster-devel] Lot of EIO errors in disperse volume

[Xavier Hernandez <xhernandez@xxxxxxxxxx>]

Hi Ram,

the error is caused by an extended attribute that does not match on all 
3 bricks of the disperse set. Most probable value is trusted.ec.version, 
but could be others.

At first sight, I don't see any change from 3.7.8 that could have caused 
this. I'll check again.

What kind of operations are you doing ? this can help me narrow the search.

Xavi

On 10/01/17 13:43, Ankireddypalle Reddy wrote:
> Xavi,
>           Thanks. If you could please explain what to look for in the extended attributes then I will check and let you know if I find anything suspicious.  Also we noticed that some of these operations would succeed if retried. Do you know of any communicated related errors that are being reported/triaged.
>
> Thanks and Regards,
> Ram
>
> -----Original Message-----
> From: Xavier Hernandez [mailto:xhernandez@xxxxxxxxxx]
> Sent: Tuesday, January 10, 2017 7:23 AM
> To: Ankireddypalle Reddy; Gluster Devel (gluster-devel@xxxxxxxxxxx); gluster-users@xxxxxxxxxxx
> Subject: Re: [Gluster-devel] Lot of EIO errors in disperse volume
>
> Hi Ram,
>
> On 10/01/17 13:14, Ankireddypalle Reddy wrote:
> > Attachment (1):
> >
> > 1
> >
> > 	
> >
> > ecxattrs.txt
> > <https://imap.commvault.com/webconsole/embedded.do?url=https://imap.co
> > mmvault.com/webconsole/api/drive/publicshare/346714/file/1272e68278744
> > f15bf1a54f2b31b559d/action/preview&downloadUrl=https://imap.commvault.
> > com/webconsole/api/contentstore/publicshare/346714/file/1272e68278744f
> > 15bf1a54f2b31b559d/action/download>
> > [Download]
> > <https://imap.commvault.com/webconsole/api/contentstore/publicshare/34
> > 6714/file/1272e68278744f15bf1a54f2b31b559d/action/download>(5.92
> > KB)
> >
> > Xavi,
> >              Please find attached the extended attributes for a
> > directory from all the bricks. Free space check failed for this with
> > error number EIO.
>
> What do you mean ? what operation have you made to check the free space on that directory ?
>
> If it's a recursive check, I need the extended attributes from the exact file that triggers the EIO. The attached attributes seem consistent and that directory shouldn't cause any problem. Does an 'ls' on that directory fail or does it show the contents ?
>
> Xavi
>
> > Thanks and Regards,
> > Ram
> >
> > -----Original Message-----
> > From: Xavier Hernandez [mailto:xhernandez@xxxxxxxxxx]
> > Sent: Tuesday, January 10, 2017 6:45 AM
> > To: Ankireddypalle Reddy; Gluster Devel (gluster-devel@xxxxxxxxxxx);
> > gluster-users@xxxxxxxxxxx
> > Subject: Re: [Gluster-devel] Lot of EIO errors in disperse volume
> >
> > Hi Ram,
> >
> > can you execute the following command on all bricks on a file that is
> > giving EIO ?
> >
> > getfattr -m. -e hex -d <path to file in brick>
> >
> > Xavi
> >
> > On 10/01/17 12:41, Ankireddypalle Reddy wrote:
> > > Xavi,
> > >             We have been running 3.7.8 on these servers. We upgraded
> > to 3.7.18 yesterday. We upgraded all the servers at a time.  The
> > volume was brought down during upgrade.
> > > Thanks and Regards,
> > > Ram
> > >
> > > -----Original Message-----
> > > From: Xavier Hernandez [mailto:xhernandez@xxxxxxxxxx]
> > > Sent: Tuesday, January 10, 2017 6:35 AM
> > > To: Ankireddypalle Reddy; Gluster Devel (gluster-devel@xxxxxxxxxxx);
> > > gluster-users@xxxxxxxxxxx
> > > Subject: Re: [Gluster-devel] Lot of EIO errors in disperse volume
> > >
> > > Hi Ram,
> > >
> > > how did you upgrade gluster ? from which version ?
> > >
> > > Did you upgrade one server at a time and waited until self-heal
> > finished before upgrading the next server ?
> > > Xavi
> > >
> > > On 10/01/17 11:39, Ankireddypalle Reddy wrote:
> > > > Hi,
> > > >
> > > >       We upgraded to GlusterFS 3.7.18 yesterday.  We see lot of
> > > > failures in our applications. Most of the errors are EIO. The
> > > > following log lines are commonly seen in the logs:
> > > >
> > > >
> > > >
> > > > The message "W [MSGID: 122056] [ec-combine.c:873:ec_combine_check]
> > > > 0-StoragePool-disperse-4: Mismatching xdata in answers of 'LOOKUP'"
> > > > repeated 2 times between [2017-01-10 02:46:25.069809] and
> > > > [2017-01-10 02:46:25.069835]
> > > >
> > > > [2017-01-10 02:46:25.069852] W [MSGID: 122056]
> > > > [ec-combine.c:873:ec_combine_check] 0-StoragePool-disperse-5:
> > > > Mismatching xdata in answers of 'LOOKUP'
> > > >
> > > > The message "W [MSGID: 122056] [ec-combine.c:873:ec_combine_check]
> > > > 0-StoragePool-disperse-5: Mismatching xdata in answers of 'LOOKUP'"
> > > > repeated 2 times between [2017-01-10 02:46:25.069852] and
> > > > [2017-01-10 02:46:25.069873]
> > > >
> > > > [2017-01-10 02:46:25.069910] W [MSGID: 122056]
> > > > [ec-combine.c:873:ec_combine_check] 0-StoragePool-disperse-6:
> > > > Mismatching xdata in answers of 'LOOKUP'
> > > >
> > > > ...
> > > >
> > > > [2017-01-10 02:46:26.520774] I [MSGID: 109036]
> > > > [dht-common.c:9076:dht_log_new_layout_for_dir_selfheal]
> > > > 0-StoragePool-dht: Setting layout of
> > > > /Folder_07.11.2016_23.02/CV_MAGNETIC/V_8854213/CHUNK_51334585 with
> > > > [Subvol_name: StoragePool-disperse-0, Err: -1 , Start: 3221225466 ,
> > > > Stop: 3758096376 , Hash: 1 ], [Subvol_name: StoragePool-disperse-1, Err:
> > > > -1 , Start: 3758096377 , Stop: 4294967295 , Hash: 1 ], [Subvol_name:
> > > > StoragePool-disperse-2, Err: -1 , Start: 0 , Stop: 536870910 , Hash:
> > > > 1 ], [Subvol_name: StoragePool-disperse-3, Err: -1 , Start:
> > > > 536870911 ,
> > > > Stop: 1073741821 , Hash: 1 ], [Subvol_name: StoragePool-disperse-4, Err:
> > > > -1 , Start: 1073741822 , Stop: 1610612732 , Hash: 1 ], [Subvol_name:
> > > > StoragePool-disperse-5, Err: -1 , Start: 1610612733 , Stop:
> > > > 2147483643 ,
> > > > Hash: 1 ], [Subvol_name: StoragePool-disperse-6, Err: -1 , Start:
> > > > 2147483644 , Stop: 2684354554 , Hash: 1 ], [Subvol_name:
> > > > StoragePool-disperse-7, Err: -1 , Start: 2684354555 , Stop:
> > > > 3221225465 ,
> > > > Hash: 1 ],
> > > >
> > > > [2017-01-10 02:46:26.522841] N [MSGID: 122031]
> > > > [ec-generic.c:1130:ec_combine_xattrop] 0-StoragePool-disperse-3:
> > > > Mismatching dictionary in answers of 'GF_FOP_XATTROP'
> > > >
> > > > The message "N [MSGID: 122031]
> > > > [ec-generic.c:1130:ec_combine_xattrop]
> > > > 0-StoragePool-disperse-3: Mismatching dictionary in answers of
> > > > 'GF_FOP_XATTROP'" repeated 2 times between [2017-01-10
> > > > 02:46:26.522841] and [2017-01-10 02:46:26.522894]
> > > >
> > > > [2017-01-10 02:46:26.522898] W [MSGID: 122040]
> > > > [ec-common.c:919:ec_prepare_update_cbk] 0-StoragePool-disperse-3:
> > > > Failed to get size and version [Input/output error]
> > > >
> > > > [2017-01-10 02:46:26.523115] N [MSGID: 122031]
> > > > [ec-generic.c:1130:ec_combine_xattrop] 0-StoragePool-disperse-6:
> > > > Mismatching dictionary in answers of 'GF_FOP_XATTROP'
> > > >
> > > > The message "N [MSGID: 122031]
> > > > [ec-generic.c:1130:ec_combine_xattrop]
> > > > 0-StoragePool-disperse-6: Mismatching dictionary in answers of
> > > > 'GF_FOP_XATTROP'" repeated 2 times between [2017-01-10
> > > > 02:46:26.523115] and [2017-01-10 02:46:26.523143]
> > > >
> > > > [2017-01-10 02:46:26.523147] W [MSGID: 122040]
> > > > [ec-common.c:919:ec_prepare_update_cbk] 0-StoragePool-disperse-6:
> > > > Failed to get size and version [Input/output error]
> > > >
> > > > [2017-01-10 02:46:26.523302] N [MSGID: 122031]
> > > > [ec-generic.c:1130:ec_combine_xattrop] 0-StoragePool-disperse-2:
> > > > Mismatching dictionary in answers of 'GF_FOP_XATTROP'
> > > >
> > > > The message "N [MSGID: 122031]
> > > > [ec-generic.c:1130:ec_combine_xattrop]
> > > > 0-StoragePool-disperse-2: Mismatching dictionary in answers of
> > > > 'GF_FOP_XATTROP'" repeated 2 times between [2017-01-10
> > > > 02:46:26.523302] and [2017-01-10 02:46:26.523324]
> > > >
> > > > [2017-01-10 02:46:26.523328] W [MSGID: 122040]
> > > > [ec-common.c:919:ec_prepare_update_cbk] 0-StoragePool-disperse-2:
> > > > Failed to get size and version [Input/output error]
> > > >
> > > >
> > > >
> > > > [root@glusterfs3 Log_Files]# gluster --version
> > > >
> > > > glusterfs 3.7.18 built on Dec  8 2016 06:34:26
> > > >
> > > >
> > > >
> > > > [root@glusterfs3 Log_Files]# gluster volume info
> > > >
> > > >
> > > >
> > > > Volume Name: StoragePool
> > > >
> > > > Type: Distributed-Disperse
> > > >
> > > > Volume ID: 149e976f-4e21-451c-bf0f-f5691208531f
> > > >
> > > > Status: Started
> > > >
> > > > Number of Bricks: 8 x (2 + 1) = 24
> > > >
> > > > Transport-type: tcp
> > > >
> > > > Bricks:
> > > >
> > > > Brick1: glusterfs1sds:/ws/disk1/ws_brick
> > > >
> > > > Brick2: glusterfs2sds:/ws/disk1/ws_brick
> > > >
> > > > Brick3: glusterfs3sds:/ws/disk1/ws_brick
> > > >
> > > > Brick4: glusterfs1sds:/ws/disk2/ws_brick
> > > >
> > > > Brick5: glusterfs2sds:/ws/disk2/ws_brick
> > > >
> > > > Brick6: glusterfs3sds:/ws/disk2/ws_brick
> > > >
> > > > Brick7: glusterfs1sds:/ws/disk3/ws_brick
> > > >
> > > > Brick8: glusterfs2sds:/ws/disk3/ws_brick
> > > >
> > > > Brick9: glusterfs3sds:/ws/disk3/ws_brick
> > > >
> > > > Brick10: glusterfs1sds:/ws/disk4/ws_brick
> > > >
> > > > Brick11: glusterfs2sds:/ws/disk4/ws_brick
> > > >
> > > > Brick12: glusterfs3sds:/ws/disk4/ws_brick
> > > >
> > > > Brick13: glusterfs1sds:/ws/disk5/ws_brick
> > > >
> > > > Brick14: glusterfs2sds:/ws/disk5/ws_brick
> > > >
> > > > Brick15: glusterfs3sds:/ws/disk5/ws_brick
> > > >
> > > > Brick16: glusterfs1sds:/ws/disk6/ws_brick
> > > >
> > > > Brick17: glusterfs2sds:/ws/disk6/ws_brick
> > > >
> > > > Brick18: glusterfs3sds:/ws/disk6/ws_brick
> > > >
> > > > Brick19: glusterfs1sds:/ws/disk7/ws_brick
> > > >
> > > > Brick20: glusterfs2sds:/ws/disk7/ws_brick
> > > >
> > > > Brick21: glusterfs3sds:/ws/disk7/ws_brick
> > > >
> > > > Brick22: glusterfs1sds:/ws/disk8/ws_brick
> > > >
> > > > Brick23: glusterfs2sds:/ws/disk8/ws_brick
> > > >
> > > > Brick24: glusterfs3sds:/ws/disk8/ws_brick
> > > >
> > > > Options Reconfigured:
> > > >
> > > > performance.readdir-ahead: on
> > > >
> > > > diagnostics.client-log-level: INFO
> > > >
> > > >
> > > >
> > > > Thanks and Regards,
> > > >
> > > > Ram
> > > >
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