[Bugs] [Bug 1297280] tar on a glusterfs mount displays "file changed as we read it" even though the file was not changed

[bugzilla at redhat.com]

https://bugzilla.redhat.com/show_bug.cgi?id=1297280

wuyl <wuyl at hygenomics.com> changed:

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              Flags|needinfo?(wuyl at hygenomics.c |
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--- Comment #3 from wuyl <wuyl at hygenomics.com> ---
(In reply to Krutika Dhananjay from comment #2)
> Hi,
> 
> Did you unmount and mount the volume again after enabling
> consistent-metadata and before running tar again on the volume? If not,
> could you just try that?
> Here are the steps:
> 
> 1) Enable consistent-metadata: # gluster volume set <VOL>
> cluster.consistent-metadata on
> 
> 2) Unmount the volume
> 
> 3) Remount the volume
> 
> 4) Run tar.
> 
> -Krutika

hello, Krutika:

yes, we unmount all clients, and then set the attributes. then remount again.

an interesting point is that after we mount back glusterfs, for the first
repeat of tar commmand, warnings are reduced significantly. But during 2nd to
10th repeats of the tar, the amounts of warning can be seen increased.

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