Gluster users - Apr 2015 - how to check/fix underlaying partition error?

Hi Pavel,

you can simply stop the glusterd service and run the fsck, it's similar to
rebooting a server which is part of a replicated volume. If all is ok before you
can simply take down one of the two and once it comes back online it will be
heal each file which hasn't been copied allready.

Do take care of any client which has the volume mounted using the server you
take down; that will loose connection also.

Met vriendelijke groet / kind regards, 

Sander Zijlstra

Linux Engineer | SURFsara | Science Park 140 | 1098XG Amsterdam | 
+31 (0)6 43 99 12 47 | sander.zijlstra at surfsara.nl | www.surfsara.nl |

----- Original Message -----
From: "Pavel Riha" <pavel.riha at trilogic.cz>
To: gluster-users at gluster.org
Sent: Wednesday, 15 April, 2015 10:28:50
Subject: [Gluster-users] how to check/fix underlaying partition error?

Hi guys,

I have replicated glusterfs (v3.4.2) on two server and I found logs 
filled by IO error on one server only. But in /var/log/messages is no hw 
error, only XFS error, so I gues the filesystem could be corrupted

My question is, how to stop or pause this brick and run fsck ?
 From the replicate feature I'm expecting no need to stop the gluster 
volume (there are some xen VM running)

what is the right way to do it? with the later re-adding and fast 
rebuild/sync in mind..

thank for tips

Pavel

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Thank you for your reply.

but btw what is the right way to do this?
stoping the glusterd service does not stop the glustefsd daemons itself
https://bugzilla.redhat.com/show_bug.cgi?id=988946

and I have more volumes running, but only one with this problem.
I haven't found any official way how to stop the process, so I just 
KILLed them.
It worked.. partiton repaired, seems ok for now.

But how to run the brick again??
I didn't save the cmdline showed in ps, but it was crazy. As I see the 
other running .. there are crazy numbers (uuid, socked, port)
and the port (for ex) is not the same as on the other server...

so I restarted the glusterd service .. nothing happend .. I was hopeless
.. but after a while I recognized, that the process is running, so maybe 
the glusterd started it after a while

there should be some way to stop or at least start one brick



Pavel



On 15.4.2015 11:59, Sander Zijlstra wrote:
> Hi Pavel,
>
> you can simply stop the glusterd service and run the fsck, it's similar
to rebooting a server which is part of a replicated volume. If all is ok before
you can simply take down one of the two and once it comes back online it will be
heal each file which hasn't been copied allready.
>
> Do take care of any client which has the volume mounted using the server
you take down; that will loose connection also.
>
> Met vriendelijke groet / kind regards,
>
> Sander Zijlstra
>
> Linux Engineer | SURFsara | Science Park 140 | 1098XG Amsterdam |
> +31 (0)6 43 99 12 47 | sander.zijlstra at surfsara.nl | www.surfsara.nl |
>
> ----- Original Message -----
> From: "Pavel Riha" <pavel.riha at trilogic.cz>
> To: gluster-users at gluster.org
> Sent: Wednesday, 15 April, 2015 10:28:50
> Subject: [Gluster-users] how to check/fix underlaying partition error?
>
> Hi guys,
>
> I have replicated glusterfs (v3.4.2) on two server and I found logs
> filled by IO error on one server only. But in /var/log/messages is no hw
> error, only XFS error, so I gues the filesystem could be corrupted
>
> My question is, how to stop or pause this brick and run fsck ?
>   From the replicate feature I'm expecting no need to stop the gluster
> volume (there are some xen VM running)
>
> what is the right way to do it? with the later re-adding and fast
> rebuild/sync in mind..
>
> thank for tips
>
> Pavel
>
> _______________________________________________
> Gluster-users mailing list
> Gluster-users at gluster.org
> http://www.gluster.org/mailman/listinfo/gluster-users
>