On 12/05/2011 08:07 PM, anthony garnier wrote:
thank you for your answer.
A last question for you, on some directory I got a little difference
when I display extended attribute :
getfattr -d -m "trusted*" -e hex *
Server1 # file: yvask300
trusted.gfid=0x433c796513864672871226072825336f
trusted.glusterfs.dht=0x00000001000000007fffffffffffffff
Server2 # file: yvask300
trusted.gfid=0x433c796513864672871226072825336f
trusted.glusterfs.dht=0x00000001000000007fffffffffffffff
Server3 # file: yvask300
trusted.afr.poolsave-client-2=0x000000000000000002000000
trusted.afr.poolsave-client-3=0x000000000000000002000000
trusted.gfid=0x433c796513864672871226072825336f
trusted.glusterfs.dht=0x0000000100000000000000007ffffffe
Server4 # # file: yvask300
trusted.afr.poolsave-client-2=0x000000000000000002000000
trusted.afr.poolsave-client-3=0x000000000000000002000000
trusted.gfid=0x433c796513864672871226072825336f
trusted.glusterfs.dht=0x0000000100000000000000007ffffffe
why the attribute "trusted.afr.VOLNAME-client-X" is not displayed on
Server 1 & 2 ?
Thx for your help.
------------------------------------------------------------------------
Date: Fri, 2 Dec 2011 08:59:48 +0530
From: [email protected]
To: [email protected]
CC: [email protected]; [email protected]
Subject: Re: [Gluster-users] Detecting split brain
On 12/01/2011 11:33 PM, anthony garnier wrote:
So if I understand well, a value different than 0sAAAAAAAAAAAAAAAA
for the attribute trusted.afr.poolsave-client-0 indicate split brain.
Thx
> Date: Thu, 1 Dec 2011 11:23:29 -0500
> From: [email protected] <mailto:[email protected]>
> To: [email protected] <mailto:[email protected]>
> CC: [email protected] <mailto:[email protected]>
> Subject: Re: [Gluster-users] Detecting split brain
>
> On Thu, 1 Dec 2011 16:00:09 +0000
> anthony garnier <[email protected]>
<mailto:[email protected]> wrote:
>
> >
> > Hi,
> >
> > I got a lot of files with attributes : 0sAAAAAAAAAAAAAAAAA
> >
> > Serv 1 :
> > # file: tbo_rmr_globale_log_11-04-07_15h43m48s.log
> > trusted.afr.poolsave-client-0=0sAAAAAAAAAAAAAAAA
> > trusted.afr.poolsave-client-1=0sAAAAAAAAAAAAAAAA
> > trusted.gfid=0sfm7CRROuQ4+wuQfmHjFCdg==
> >
> > Serv 2 :
> > # file: tbo_rmr_globale_log_11-04-07_15h43m48s.log
> > trusted.afr.poolsave-client-0=0sAAAAAAAAAAAAAAAA
> > trusted.afr.poolsave-client-1=0sAAAAAAAAAAAAAAAA
> > trusted.gfid=0sfm7CRROuQ4+wuQfmHjFCdg==
> >
> > Does it mean that those files need Self-Healing ? I use GlusterFS
> > 3.2.3
>
> This is actually normal. For some reason that would probably make me
> throw up if I knew it, getfattr misreports
0x000000000000000000000000
> as 0sAAAAAAAAAAAAAAAA (which would be 0x404040404040404040404040) if
> you don't give it the "-e hex" flag. The value is actually three
> four-byte integers, and if they're zero it means there are no
pending
> operations. Any *other* value is likely to indicate split brain.
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Small Correction:
Different value than 0sAAA.. means there are pending operations.
If you dump the values with -e hex option and there should be 24
digits, first 8 represent pending operations on the data of the files
(write/truncate). next 8 represent pending operations on metadata
(permissions, ownership etc) next 8 represent pending operations on
entry (creation/deletion/rename of a file inside that directory). Now
if both data/metadata/entry digits are non-zero on a file then that
will be split-brain.
Example:
Data split-brain:
trusted.afr.poolsave-client-0=0s000000010000000000000000
trusted.afr.poolsave-client-1=0s000000200000000000000000
Thanks
Pranith
The xattrs are set on need basis so no xattr means all zeros.
Thanks
Pranith
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