Hi,
the procedure worked (had to execute a heal manually to heal both files
as I don't have self heal enabled). Both files where also in
.glusterfs/quarantine , I assume it is safe to delete them too or it
will affect the next scrub?
Thanks for the info!
Regards,
Iñaki.
On 07/21/2016 07:45 AM, Kotresh Hiremath Ravishankar wrote:
Hi,
Please follow below steps to restore:
1. Determine the path of each corrupted object from gfid shown from bitrot
status command
# find /bricks/*/.glusterfs -name GFID
/bricks/brick1/.glusterfs/path/to/GFID
# find /bricks -samefile /bricks/brick1/.glusterfs/path/to/GFID
/bricks/brick1/.glusterfs/path/to/GFID
/bricks/brick1/path/to/corrupted_file
2. Delete the corrupted files including .glusterfs GFID link file
Delete the corrupted files from the path output by the find command.
3. Heal the file
If you have client self-heal enabled, the file is healed the next time
that you access it.
If you do not have client self-heal enabled, you must manually heal the
volume with the following command.
# gluster volume heal VOLNAME
The next time that the bitrot scrubber runs, this GFID is no longer
listed (unless it has become corrupted again).
Thanks and Regards,
Kotresh H R
----- Original Message -----
From: "Ashish Pandey" <[email protected]>
To: "itlinux_team" <[email protected]>
Cc: [email protected], "Kotresh Hiremath Ravishankar"
<[email protected]>
Sent: Thursday, July 21, 2016 10:57:51 AM
Subject: Re: [Gluster-users] bitrot error correction in gluster 3.8 distributed
dispersed setup
Hi,
"gluster v heal " command does not heal corrupt files detected by bitrot
feature.
You have modified a file from back end and corrupted it.
I think to correct your corrupted files (in fact the part of file in case of
disperse volume) you have to delete that part and run gluster v heal
<volname> full
to correct the file.
Keeping Kotresh in cc for better input of bitrot.
Ashish
----- Original Message -----
From: "itlinux_team" <[email protected]>
To: [email protected]
Sent: Wednesday, July 20, 2016 7:43:56 PM
Subject: [Gluster-users] bitrot error correction in gluster 3.8 distributed
dispersed setup
Hi all,
I'm testing the bitrot feature on a distributed dispersed setup: 3 x (8
+ 4).
I simulated a bit-flip on the part of a couple of files in a brick,
having bitrot feature enabled before. The output from ''gluster volume
bitrot vol_1 scrub status'' shows that two files are corrupted as shown
below:
---
Volume name : vol_1
State of scrub: Active
Scrub impact: normal
Scrub frequency: daily
Bitrot error log location: /var/log/glusterfs/bitd.log
Scrubber error log location: /var/log/glusterfs/scrub.log
=========================================================
Node: localhost
Number of Scrubbed files: 564
Number of Skipped files: 0
Last completed scrub time: 2016-07-20 13:37:16
Duration of last scrub (D:M:H:M:S): 0:0:0:50
Error count: 0
=========================================================
Node: glusterserver1
Number of Scrubbed files: 562
Number of Skipped files: 0
Last completed scrub time: 2016-07-20 13:37:16
Duration of last scrub (D:M:H:M:S): 0:0:0:51
Error count: 2
Corrupted object's [GFID]:
e3cbffbe-12bd-4e1c-8dcf-2ef87ac99990
2550475e-cf9e-4781-9a05-9e11c1dd6b7a
=========================================================
Node: glusterserver3
Number of Scrubbed files: 564
Number of Skipped files: 0
Last completed scrub time: 2016-07-20 13:37:16
Duration of last scrub (D:M:H:M:S): 0:0:0:50
---
I have executed ''gluster volume heal vol_1 full'' but it does not seem
to fix the files, however the file that the client reads is the correct
one.
How should I handle this kind of corruption within gluster?
Thanks!
Iñaki.
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