Ing. Luca Lazzeroni - Trend Servizi Srl
2018-Jan-17 10:34 UTC
[Gluster-users] [Possibile SPAM] Re: Strange messages in mnt-xxx.log
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. 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 <mailto: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 <mailto:Gluster-users at gluster.org> > http://lists.gluster.org/mailman/listinfo/gluster-users > <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 -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.gluster.org/pipermail/gluster-users/attachments/20180117/7bed7eae/attachment.html>
Nithya Balachandran
2018-Jan-23 05:46 UTC
[Gluster-users] [Possibile SPAM] Re: Strange messages in mnt-xxx.log
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 havenever 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 > >-------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.gluster.org/pipermail/gluster-users/attachments/20180123/26ea5e14/attachment.html>