Gluster users - Dec 2019 - gluster volume heal info takes a long time

Hi guys,

In our setup, `gluster volume heal XXX info` sometimes takes a very long 
time (6 minutes for example).

We noticed this because we run oVirt, and get a message in the Events 
log "VDSM $hostname command GetGlusterVolumeHealInfoVDS failed: Message 
timeout which can be caused by communication issues".


Do you know what can be the cause of the slowness in `gluster volume 
heal XXX info`?

glusterfs-3.12.15-1.el7.x86_64


Kind regards,

Sander Hoentjen

On 19/12/19 6:18 pm, Sander Hoentjen wrote:
> Hi guys,
>
> In our setup, `gluster volume heal XXX info` sometimes takes a very 
> long time (6 minutes for example).
>
> We noticed this because we run oVirt, and get a message in the Events 
> log "VDSM $hostname command GetGlusterVolumeHealInfoVDS failed: 
> Message timeout which can be caused by communication issues".
>
>
> Do you know what can be the cause of the slowness in `gluster volume 
> heal XXX info`?
I have observed that the slowness is because it is waiting to acquire 
the lock held by the client.? A patch to make the command work without 
taking locks has been merged recently to the release-7 branch 
(https://review.gluster.org/#/c/glusterfs/+/23883/)? and will be 
available in glusterfs-7.1.? Note that glusterfs-3.12 is EOL'ed.

Regards,
Ravi
>
> glusterfs-3.12.15-1.el7.x86_64
>
>
> Kind regards,
>
> Sander Hoentjen
>
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