[Gluster-users] [Possibile SPAM] Re: Strange messages in mnt-xxx.log

[Nithya Balachandran]

On 17 January 2018 at 16:04, Ing. Luca Lazzeroni - Trend Servizi Srl <
luca at trendservizi.it> wrote:

> Here's the volume info:
>
>
> Volume Name: gv2a2
> Type: Replicate
> Volume ID: 83c84774-2068-4bfc-b0b9-3e6b93705b9f
> Status: Started
> Snapshot Count: 0
> Number of Bricks: 1 x (2 + 1) = 3
> Transport-type: tcp
> Bricks:
> Brick1: gluster1:/bricks/brick2/gv2a2
> Brick2: gluster3:/bricks/brick3/gv2a2
> Brick3: gluster2:/bricks/arbiter_brick_gv2a2/gv2a2 (arbiter)
> Options Reconfigured:
> storage.owner-gid: 107
> storage.owner-uid: 107
> user.cifs: off
> features.shard: on
> cluster.shd-wait-qlength: 10000
> cluster.shd-max-threads: 8
> cluster.locking-scheme: granular
> cluster.data-self-heal-algorithm: full
> cluster.server-quorum-type: server
> cluster.quorum-type: auto
> cluster.eager-lock: enable
> network.remote-dio: enable
> performance.low-prio-threads: 32
> performance.io-cache: off
> performance.read-ahead: off
> performance.quick-read: off
> transport.address-family: inet
> nfs.disable: off
> performance.client-io-threads: off
>
> The only client I'm using is FUSE client used to mount the gluster volume.
> On the gluster volume there is a maximum of 15 files ("big" files because
> they host VM images) accessed by qemu-kvm as normal files on the FUSE
> mounted volume.
>
> By inspecting the code I've found that the message is logged in 2
> situations:
>
> 1) A real "Hole" in DHT
>
> 2) A "virgin" file being created
>
> I think this is the second situation because that message appears only
> when I create a new qcow2 volume to host VM image.
>
>  These messages should ideally be seen only for directories and I have
never seen it with a null gfid so far. I'll try to reproduce this and get
back to you.

Regards,
Nithya


> Il 17/01/2018 04:54, Nithya Balachandran ha scritto:
>
> Hi,
>
>
> On 16 January 2018 at 18:56, Ing. Luca Lazzeroni - Trend Servizi Srl <
> luca at trendservizi.it> wrote:
>
>> Hi,
>>
>> I'm testing gluster 3.12.4 and, by inspecting log files
>> /var/log/glusterfs/mnt-gv0.log (gv0 is the volume name), I found many lines
>> saying:
>>
>> [2018-01-15 09:45:41.066914] I [MSGID: 109063]
>> [dht-layout.c:716:dht_layout_normalize] 0-gv0-dht: Found anomalies in
>> (null) (gfid = 00000000-0000-0000-0000-000000000000). Holes=1 overlaps=0
>> [2018-01-15 09:45:45.755021] I [MSGID: 109063]
>> [dht-layout.c:716:dht_layout_normalize] 0-gv0-dht: Found anomalies in
>> (null) (gfid = 00000000-0000-0000-0000-000000000000). Holes=1 overlaps=0
>> [2018-01-15 14:02:29.171437] I [MSGID: 109063]
>> [dht-layout.c:716:dht_layout_normalize] 0-gv0-dht: Found anomalies in
>> (null) (gfid = 00000000-0000-0000-0000-000000000000). Holes=1 overlaps=0
>>
>> What do they mean ? Is there any real problem ?
>>
>>
> Please provide the following details:
> gluster volume info
> what clients you are using and what operations being performed
> Any steps to reproduce this issue.
>
> Thanks,
> Nithya
>
> Thank you,
>>
>>
>> --
>> Ing. Luca Lazzeroni
>> Responsabile Ricerca e Sviluppo
>> Trend Servizi Srl
>> Tel: 0376/631761
>> Web: https://www.trendservizi.it
>>
>> _______________________________________________
>> Gluster-users mailing list
>> Gluster-users at gluster.org
>> http://lists.gluster.org/mailman/listinfo/gluster-users
>>
>
>
> --
> Ing. Luca Lazzeroni
> Responsabile Ricerca e Sviluppo
> Trend Servizi Srl
> Tel: 0376/631761
> Web: https://www.trendservizi.it
>
>
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