[Gluster-users] determine filename from shard?

[WK]

great, I'll dig into when I get a chance and report back.

-wk

On 10/14/2019 10:05 AM, Amar Tumballi wrote:
> Awesome, thanks!
>
> Then, I hope this 
> https://github.com/gluster/glusterfs/commit/ab2558a3e7a1b2de2d63a3812ab4ed58d10d8619 is 
> included in the build.
>
> What it means is, if you just list the xattrs of the file, you can get 
> the file name (pgfid/basename) format. If there are no duplicate 
> filenames, then it will be easy. Otherwise, you would need to use 
> aux-gfid-mount to get details as told in the patch.
>
> 1.
>       mount -t glusterfs -o aux-gfid-mount 127.0.0.2:testvol /mnt/aux_mount
>  2. and then try doing the operation as told in commit message above
>     on /mnt/aux_mount/.gfid/<gfid>
>
>
> Regards,
> Amar
>
>
> On Mon, Oct 14, 2019 at 9:13 PM WK <wkmail at bneit.com 
> <mailto:wkmail at bneit.com>> wrote:
>
>     6.5 on Ubuntu 18
>
>
>     On 10/13/2019 10:14 PM, Amar Tumballi wrote:
>>     Which is the version of GlusterFS you are using?
>>
>>     There are few methods like 'gfid2path' option to fetch details of
>>     the file path from a gfid in versions above v6.0
>>
>>
>>
>>
>>     On Mon, Oct 14, 2019 at 8:14 AM wkmail <wkmail at bneit.com
>>     <mailto:wkmail at bneit.com>> wrote:
>>
>>         We recently were trying to track down a high load situation
>>         on a KVM
>>         node in a cluster running gluster (replication2 + arb).
>>
>>         Iotop on the affected node showed that gluster was involved
>>         showing
>>         abnormally heavy writes. There wasn't any obvious activity on
>>         the
>>         network coming into the VMs, so it was something internal to
>>         one of
>>         them, so we had to keep looking
>>
>>         We then used gluster volume top which showed that a couple of
>>         shards
>>         were being pounded but we didn't see a way to immediately
>>         associate
>>         those shards with their VM file.
>>
>>         We eventually figured out the problem VM using other methods and
>>         resolved the issue, but we would still like to know if there
>>         is a script
>>         or recipe to determine what file a shard may belong to as
>>         that would
>>         have sped up the resolution.
>>
>>         -wk
>>
>>
>>
>>
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