[Gluster-users] gluster volume heal info split brain command not showing files in split-brain

Thu Mar 17 08:24:15 UTC 2016

Hi Anuradha,

But in this case I need to do tail on each file which is time taking
process and other end I can't pause my module until these file is getting
healed.

Any how I need the output of the split-brain to resolve this problem.

Regards,
Abhishek

On Wed, Mar 16, 2016 at 6:21 PM, ABHISHEK PALIWAL <abhishpaliwal at gmail.com>
wrote:

> Hi Anuradha,
>
> The issue is resolved but we have one more issue something similar to this
> one in which the file is not getting sync after the steps followed,
> mentioned in the link which you shared in the previous mail.
>
> And problem is that why split-brain command is not showing split-brain
> entries.
>
> Regards,
> Abhishek
>
> On Wed, Mar 16, 2016 at 6:06 PM, Anuradha Talur <atalur at redhat.com> wrote:
>
>>
>>
>> ----- Original Message -----
>> > From: "Anuradha Talur" <atalur at redhat.com>
>> > To: "ABHISHEK PALIWAL" <abhishpaliwal at gmail.com>
>> > Cc: gluster-users at gluster.org, gluster-devel at gluster.org
>> > Sent: Wednesday, March 16, 2016 5:32:26 PM
>> > Subject: Re: [Gluster-users] gluster volume heal info split brain
>> command not showing files in split-brain
>> >
>> >
>> >
>> > ----- Original Message -----
>> > > From: "ABHISHEK PALIWAL" <abhishpaliwal at gmail.com>
>> > > To: "Anuradha Talur" <atalur at redhat.com>
>> > > Cc: gluster-users at gluster.org, gluster-devel at gluster.org
>> > > Sent: Wednesday, March 16, 2016 4:39:26 PM
>> > > Subject: Re: [Gluster-users] gluster volume heal info split brain
>> command
>> > > not showing files in split-brain
>> > >
>> > > Hi Anuradha,
>> > >
>> > > I am doing the same which is mentioned in the link you shared and It
>> has
>> > > been resolved the issue.
>> > >
>> > > But my question is if it is the split-brain scenario then why the
>> command
>> > > "gluster volume heal info split-brain"
>> > >  not showing these files in the output even not the parent directory
>> is
>> > > present in split-brain.
>> > >
>> > > Please find the requested logs
>>
>> Abhishek,
>>
>> Yes, ideally it should show. I will look into it. The only reason I can
>> think of, is when parent directory did not have any pending markers to
>> indicate split-brain; which is why I asked getfattr output for the parent
>> directory too. But if the issue is resolved, there isn't much info we can
>> get out of it. Thanks for sharing the logs. Will see what could have caused
>> this.
>>
>> > Abhishek,
>> >
>> > Yes, ideally it should show. I will look into it.
>> > I saw another case with this issue. The parent directory did not have
>> any pe
>> > >
>> > > On Wed, Mar 16, 2016 at 4:20 PM, Anuradha Talur <atalur at redhat.com>
>> wrote:
>> > >
>> > > > Hi Abhishek,
>> > > >
>> > > > The files that are reporting i/o error have gfid-mismatch. This
>> situation
>> > > > is called directory or entry split-brain. You can find steps to
>> resolve
>> > > > this kind of split brain here :
>> > > >
>> https://gluster.readthedocs.org/en/latest/Troubleshooting/split-brain/ .
>> > > >
>> > > > Ideally, the parent directories of these files have to be listed in
>> heal
>> > > > info split-brain output. Can you please get extended attributes of
>> parent
>> > > > directories of the files that show i/o error (Same getfattr command
>> that
>> > > > you previously used.) ?
>> > > >
>> > > > ----- Original Message -----
>> > > > > From: "ABHISHEK PALIWAL" <abhishpaliwal at gmail.com>
>> > > > > To: "Anuradha Talur" <atalur at redhat.com>
>> > > > > Cc: gluster-users at gluster.org, gluster-devel at gluster.org
>> > > > > Sent: Thursday, March 10, 2016 11:22:35 AM
>> > > > > Subject: Re: [Gluster-users] gluster volume heal info split brain
>> > > > command not showing files in split-brain
>> > > > >
>> > > > > Hi Anuradha,
>> > > > >
>> > > > > Please find the glusterfs and glusterd logs directory as an
>> attachment.
>> > > > >
>> > > > > Regards,
>> > > > > Abhishek
>> > > > >
>> > > > >
>> > > > >
>> > > > > On Wed, Mar 9, 2016 at 5:54 PM, ABHISHEK PALIWAL <
>> > > > abhishpaliwal at gmail.com>
>> > > > > wrote:
>> > > > >
>> > > > > > Hi Anuradha,
>> > > > > >
>> > > > > > Sorry for late reply.
>> > > > > >
>> > > > > > Please find the requested logs below:
>> > > > > >
>> > > > > > Remote: 10.32.0.48
>> > > > > > Local : 10.32.1.144
>> > > > > >
>> > > > > > Local:
>> > > > > > #gluster volume heal c_glusterfs info split-brain
>> > > > > > Brick 10.32.1.144:/opt/lvmdir/c2/brick
>> > > > > > Number of entries in split-brain: 0
>> > > > > >
>> > > > > > Brick 10.32.0.48:/opt/lvmdir/c2/brick
>> > > > > > Number of entries in split-brain: 0
>> > > > > >
>> > > > > > Remote:
>> > > > > > #gluster volume heal c_glusterfs info split-brain
>> > > > > > Brick 10.32.1.144:/opt/lvmdir/c2/brick
>> > > > > > Number of entries in split-brain: 0
>> > > > > >
>> > > > > > Brick 10.32.0.48:/opt/lvmdir/c2/brick
>> > > > > > Number of entries in split-brain: 0
>> > > > > >
>> > > > > > auto-sync.sh.
>> > > > > > Here you can see that i/o error is detected. Below is the
>> required
>> > > > > > meta
>> > > > > > data from both the bricks.
>> > > > > >
>> > > > > > 1)
>> > > > > > stat: cannot stat
>> '/mnt/c//public_html/cello/ior_files/nameroot.ior':
>> > > > > > Input/output error
>> > > > > > Remote:
>> > > > > >
>> > > > > > getfattr -d -m . -e hex
>> > > > > > opt/lvmdir/c2/brick/public_html/cello/ior_files/nameroot.ior
>> > > > > > # file:
>> opt/lvmdir/c2/brick/public_html/cello/ior_files/nameroot.ior
>> > > > > > trusted.afr.dirty=0x000000000000000000000000
>> > > > > > trusted.bit-rot.version=0x000000000000000256ded2f6000ad80f
>> > > > > > trusted.gfid=0x771221a7bb3c4f1aade40ce9e38a95ee
>> > > > > >
>> > > > > > Local:
>> > > > > >
>> > > > > > getfattr -d -m . -e hex
>> > > > > > opt/lvmdir/c2/brick/public_html/cello/ior_files/nameroot.ior
>> > > > > > # file:
>> opt/lvmdir/c2/brick/public_html/cello/ior_files/nameroot.ior
>> > > > > > trusted.bit-rot.version=0x000000000000000256ded38f000e3a51
>> > > > > > trusted.gfid=0x8ea33f46703c4e2d95c09153c1b858fd
>> > > > > >
>> > > > > >
>> > > > > > 2)
>> > > > > > stat: cannot stat '/mnt/c//security/corbasecurity': Input/output
>> > > > > > error
>> > > > > > Remote:
>> > > > > >
>> > > > > > getfattr -d -m . -e hex
>> opt/lvmdir/c2/brick/security/corbasecurity
>> > > > > > # file: opt/lvmdir/c2/brick/security/corbasecurity
>> > > > > > trusted.afr.dirty=0x000000000000000000000000
>> > > > > > trusted.bit-rot.version=0x000000000000000256ded2f6000ad80f
>> > > > > > trusted.gfid=0xd298b7a0c8834f3e99abb39741363013
>> > > > > >
>> > > > > > Local:
>> > > > > >
>> > > > > > getfattr -d -m . -e hex
>> opt/lvmdir/c2/brick/security/corbasecurity
>> > > > > > # file: opt/lvmdir/c2/brick/security/corbasecurity
>> > > > > > trusted.bit-rot.version=0x000000000000000256ded38f000e3a51
>> > > > > > trusted.gfid=0x890df0f706184b52803fac3242a2f15b
>> > > > > >
>> > > > > > I observed that getfattr command output doesn't show all the
>> fields
>> > > > > > all
>> > > > > > the times.
>> > > > > >
>> > > > > > Here you can check that gluster split-brain command hasn't
>> reported
>> > > > > > any
>> > > > > > split-brains but resulted in IO errors when accessed few files.
>> > > > > >
>> > > > > > Could you please tell me if "split-brain" command doesn't
>> reported
>> > > > > > any
>> > > > > > entry as output, then is there any way through which we can
>> find out
>> > > > that
>> > > > > > the files are in split-brain if we are getting the IO error on
>> those
>> > > > file.
>> > > > > >
>> > > > > >
>> > > > > > Regards,
>> > > > > > Abhishek
>> > > > > >
>> > > > > >
>> > > > > >
>> > > > > > On Thu, Mar 3, 2016 at 5:32 PM, Anuradha Talur <
>> atalur at redhat.com>
>> > > > wrote:
>> > > > > >
>> > > > > >>
>> > > > > >>
>> > > > > >> ----- Original Message -----
>> > > > > >> > From: "ABHISHEK PALIWAL" <abhishpaliwal at gmail.com>
>> > > > > >> > To: gluster-users at gluster.org, gluster-devel at gluster.org
>> > > > > >> > Sent: Thursday, March 3, 2016 12:10:42 PM
>> > > > > >> > Subject: [Gluster-users] gluster volume heal info split brain
>> > > > command
>> > > > > >> not     showing files in split-brain
>> > > > > >> >
>> > > > > >> >
>> > > > > >> > Hello,
>> > > > > >> >
>> > > > > >> > In gluster, we use the command "gluster volume heal
>> c_glusterfs
>> > > > > >> > info
>> > > > > >> > split-brain" to find the files that are in split-brain
>> scenario.
>> > > > > >> > We run heal script (developed by Windriver prime team) on the
>> > > > > >> > files
>> > > > > >> reported
>> > > > > >> > by above command to resolve split-brain issue.
>> > > > > >> >
>> > > > > >> > But we observed that the above command is not showing all
>> files
>> > > > > >> > that
>> > > > > >> are in
>> > > > > >> > split-brain,
>> > > > > >> > even though split brain scenario actually exists on the node.
>> > > > > >> >
>> > > > > >> > Now a days this issue is seen more often and IO errors are
>> > > > > >> > reported
>> > > > when
>> > > > > >> > tried to access these files under split-brain.
>> > > > > >> >
>> > > > > >> > Can you please check why this gluster command is not showing
>> files
>> > > > under
>> > > > > >> > split-brain?
>> > > > > >> > We can provide you required logs and support to resolve this
>> > > > > >> > issue.
>> > > > > >> Hi,
>> > > > > >>
>> > > > > >> Could you paste the output of getfattr -m. -de hex
>> > > > > >> <path-to-files-in-split-brain> from all the bricks that the
>> files
>> > > > > >> lie
>> > > > in?
>> > > > > >>
>> > > > > >> >
>> > > > > >> > Please reply on this because I am not getting any reply from
>> the
>> > > > > >> community.
>> > > > > >> >
>> > > > > >> > --
>> > > > > >> >
>> > > > > >> > Regards
>> > > > > >> > Abhishek Paliwal
>> > > > > >> >
>> > > > > >> > _______________________________________________
>> > > > > >> > Gluster-users mailing list
>> > > > > >> > Gluster-users at gluster.org
>> > > > > >> > http://www.gluster.org/mailman/listinfo/gluster-users
>> > > > > >>
>> > > > > >> --
>> > > > > >> Thanks,
>> > > > > >> Anuradha.
>> > > > > >>
>> > > > > >
>> > > > >
>> > > >
>> > > > --
>> > > > Thanks,
>> > > > Anuradha.
>> > > >
>> > >
>> > >
>> > >
>> > > --
>> > >
>> > >
>> > >
>> > >
>> > > Regards
>> > > Abhishek Paliwal
>> > >
>> >
>> > --
>> > Thanks,
>> > Anuradha.
>> >
>>
>> --
>> Thanks,
>> Anuradha.
>>
>
>
>
> --
>
>
>
>
> Regards
> Abhishek Paliwal
>

-- 

Regards
Abhishek Paliwal
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