[Gluster-users] about split-brain

[Krutika Dhananjay]

A gfid mismatch should also be showing up in the form of a split-brain on
the parent directory of the entry in question.

1) In your case, does 'public_html/cello/ior_files' show itself up in the
output of `gluster volume heal <VOL> info split-brain`?
2) And what version of gluster are you using?
3) Could you share the output of `gluster volume info`?
4) nameroot.ior is a regular file, correct? Could you confirm that?

-Krutika

On Thu, Mar 10, 2016 at 1:03 PM, songxin <songxin_1980 at 126.com> wrote:

> Hi all,
> I have a file has a problem of gfid-mismatch as below.
>
> 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
>
> There is a saying in link
> https://gluster.readthedocs.org/en/latest/Troubleshooting/split-brain/ as
> below.
>
> This is done by observing the afr changelog extended attributes of the
> file on the bricks using the getfattr command; then identifying the type of
> split-brain (data split-brain, metadata split-brain, entry split-brain or *split-brain
> due to gfid-mismatch*); and finally determining which of the bricks
> contains the 'good copy' of the file.
>
> So the gfid-mismatch is also a split-brain.
> But I found that "gluster volume heal gv0 info split-brain" can't show
> split-brain entry due to gfid-mismatch.
>
> My question is following:
> 1.Which command can be used to show split-brain due to gfid-mismatch?
> 2.How to heal it？Is it same as data split-brain？
>
>
> Thanks，
> Xin
>
>
>
>
> _______________________________________________
> Gluster-users mailing list
> Gluster-users at gluster.org
> http://www.gluster.org/mailman/listinfo/gluster-users
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://www.gluster.org/pipermail/gluster-users/attachments/20160310/274d3419/attachment.html>