[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



--- Comment #7 from Krutika Dhananjay <kdhananj at redhat.com> ---
(In reply to wuyl from comment #5)
> Hi, Krutika:
> 
> we did umount all clients before change settings. If we don't umount the
> clients, when modify volume config, glusterfs will report the following
> error:
> 
> volume set: failed: One or more connected clients cannot support the feature
> being set. These clients need to be upgraded or disconnected before running
> this command again

Hi,

I meant we MUST unmount the clients AFTER setting the option too, and then
remount and run tar. Could you please try that as well?

Also, I'm curious, what version of GlusterFS are the clients running? The very
fact that you saw the error - "One or more connected clients cannot support the
feature being set. These clients need to be upgraded or disconnected before
running this command again" - means that not all clients are at the same
version as the servers.



With respect to the logs of the kind:

<logs>

[2016-01-18 05:50:19.138583] I [MSGID: 109036]
[dht-common.c:7869:dht_log_new_layout_for_dir_selfheal] 0-new_volume-dht:
Setting layout of /yileilih/pipeline_whole_genome_observation/work/da with
[Subvol_name: new_volume-replicate-0, Err: -1 , Start: 0 , Stop: 1428805999 ,
Hash: 1 ], [Subvol_name: new_volume-replicate-1, Err: -1 , Start: 1428806000 ,
Stop: 2857611999 , Hash: 1 ], [Subvol_name: new_volume-replicate-2, Err: -1 ,
Start: 2857612000 , Stop: 4294967295 , Hash: 1 ], 
[2016-01-18 05:50:19.143423] I [MSGID: 109036]
[dht-common.c:7869:dht_log_new_layout_for_dir_selfheal] 0-new_volume-dht:
Setting layout of
/yileilih/pipeline_whole_genome_observation/work/da/46c38e4e83fa2e10c3d33800042937
with [Subvol_name: new_volume-replicate-0, Err: -1 , Start: 2857612000 , Stop:
4294967295 , Hash: 1 ], [Subvol_name: new_volume-replicate-1, Err: -1 , Start:
0 , Stop: 1428805999 , Hash: 1 ], [Subvol_name: new_volume-replicate-2, Err: -1
, Start: 1428806000 , Stop: 2857611999 , Hash: 1 ], 

</logs>

... these messages are informational (indicated by the 'I' after the timestamp)
and therefore are harmless. These messages can be ignored.

-Krutika

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