Gluster users - Dec 2019 - periodical warnings in brick-log after upgrading to gluster 7.1

Hello,

i've finally upgraded our gluster-server to 7.1 (3.8 debian stretch ->
gluster-repo 3.12 -> gluster-repo 7.1) and it actually went real smooth.
There is just that warning in all brick-logs and every server every 15min i
can't really explain myself.

[2019-12-29 05:51:17.807293] W [socket.c:774:__socket_rwv]
0-tcp.store4-server: readv on 192.168.31.60:49077 failed (no data available)
[2019-12-29 06:00:47.886369] W [socket.c:774:__socket_rwv]
0-tcp.store4-server: readv on 192.168.31.61:49140 failed (no data
available)
[2019-12-29 06:06:18.204778] W [socket.c:774:__socket_rwv]
0-tcp.store4-server: readv on 192.168.31.60:49077 failed (no data
available)
[2019-12-29 06:15:47.317705] W [socket.c:774:__socket_rwv]
0-tcp.store4-server: readv on 192.168.31.61:49148 failed (no data
available)

.60 and .61 are two servers with bricks for gluster volume "store4".
They
are not only the gluster-server, they also are clients that mount the
gluster volumes. (replicated gluster volume, that hosts kvm images that run
locally on the server)

Everything really looks good no other errors or warning - just the lines
mentioned above. Is this something i should be worried about or can resolve
somehow?

Of course i looked through the web, unfortunately i only really could find
one guy that had the same problem but no following messages [1]. And the
best explanation i could find was in a bug report [2], so it seems it's not
unusual i just don't like ignoring warnings.

Anyone here that has similiar warning or could explain what i can do about
it?

Thanks Mika

[1] https://lists.gluster.org/pipermail/gluster-users/2015-May/021971.html
[2] https://bugzilla.redhat.com/show_bug.cgi?id=1385525#c3
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On Sun, Dec 29, 2019 at 9:50 PM Michael B?hm <dudleyperkins at gmail.com>
wrote:
> Hello,
>
> i've finally upgraded our gluster-server to 7.1 (3.8 debian stretch
->
> gluster-repo 3.12 -> gluster-repo 7.1) and it actually went real smooth.
> There is just that warning in all brick-logs and every server every 15min i
> can't really explain myself.
>
> [2019-12-29 05:51:17.807293] W [socket.c:774:__socket_rwv]
> 0-tcp.store4-server: readv on 192.168.31.60:49077 failed (no data
> available)
> [2019-12-29 06:00:47.886369] W [socket.c:774:__socket_rwv]
> 0-tcp.store4-server: readv on 192.168.31.61:49140 failed (no data
> available)
> [2019-12-29 06:06:18.204778] W [socket.c:774:__socket_rwv]
> 0-tcp.store4-server: readv on 192.168.31.60:49077 failed (no data
> available)
> [2019-12-29 06:15:47.317705] W [socket.c:774:__socket_rwv]
> 0-tcp.store4-server: readv on 192.168.31.61:49148 failed (no data
> available)
>
> .60 and .61 are two servers with bricks for gluster volume
"store4". They
> are not only the gluster-server, they also are clients that mount the
> gluster volumes. (replicated gluster volume, that hosts kvm images that run
> locally on the server)
>
> Everything really looks good no other errors or warning - just the lines
> mentioned above. Is this something i should be worried about or can resolve
> somehow?
>
> Of course i looked through the web, unfortunately i only really could find
> one guy that had the same problem but no following messages [1]. And the
> best explanation i could find was in a bug report [2], so it seems it's
not
> unusual i just don't like ignoring warnings.
>
>
Your concern is valid, and if the log level is WARNING, it shouldn't be
ignored :-)

I noticed that this is happening when a client disconnects with server
(specially, after umount). Was there any periodic umount which is
happening? Or a monitoring system which is running, which would do a
temporary mount and and check for size etc ?

Regards,
Amar
--
https://kadalu.io


Anyone here that has similiar warning or could explain what i can do
about
> it?
>
>
> Thanks Mika
>
> [1] https://lists.gluster.org/pipermail/gluster-users/2015-May/021971.html
> [2] https://bugzilla.redhat.com/show_bug.cgi?id=1385525#c3
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