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

[Ankireddypalle Reddy]

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 at glusterfs3 Log_Files]# gluster --version
glusterfs 3.7.18 built on Dec  8 2016 06:34:26

[root at 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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