Re: GlusterFS 3.7.2: gluster volume heal <vol> info heal-failed

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Hi,

I'm actually using an older version (3.6.2), but we plan to upgrade to 3.7.2 so I guess the question didn't refer to a specific version.

# gluster volume heal
Usage: volume heal <VOLNAME> [{full | statistics {heal-count {replica <hostname:brickname>}} |info {healed | heal-failed | split-brain}}]
# gluster volume heal c_glusterfs info heal-failed
Command not supported. Please use "gluster volume heal c_glusterfs info" and logs to find the heal information.
As it is part of the usage string, I thought it was something that would be implemented later on. My bad...

Regarding the bugzilla case, was this implemented according to the plans, i.e. does gluster volume heal <vol> info examine all the files by itself or does it rely on anything else? Can we expect the same behaviour when we ask for a report of split-brain files? The reason I ask is that I think it executes rather quickly. I need to know that we can trust that the output is valid when the command is issued and does not reflect the situation a (undefined) while ago.

In this implementation the goal is to remove all the caching and compute the results afresh.

Regards
Andreas

On 07/08/2015 05:32 PM, Ravishankar N wrote:


On 07/08/2015 04:31 PM, Andreas Hollaus wrote:
Hi,

I'm curious about this 'gluster volume heal <vol> info heal-failed' command:

What would be a possible reason for healing to fail and get listed by this command? I know about split-brain, but as that is another option for the command I suspect that this would list files that could not be healed but still not split-brain files, right?
info healed and info heal-failed were deprecated long ago [1]. Running these commands should indicate that the command is not supported. If you're observing otherwise on 3.7.2, something is indeed fishy.

Regards,
Ravi



[1] https://bugzilla.redhat.com/show_bug.cgi?id=1098027#c0
On what does it base it's report? Does it investigate the filesystem by itself, or does it depend on results from any another command or internal action? It executes so quickly that I suspect that it make use of some internal data structure. If so, is this data structure always kept up-to-date or is it updated at a fixed interval?


Regards
Andreas
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