Hello Oliver, this issue showed very hard to reproduce, i couldn't make it
again.
My best guess is something with the Azure's network since last week (when
happened a lot) there were a ongoing maintenance.
Here's the outputs:
$ ceph -s
cluster 25736883-dbf1-4d7a-8796-50e36f9de7a6
health HEALTH_OK
monmap e1: 4 mons at {osmbr0=
10.0.3.4:6789/0,osmbr1=10.0.3.6:6789/0,osmbr2=10.0.3.14:6789/0,osmbr3=10.0.3.7:6789/0
}
election epoch 602, quorum 0,1,2,3 osmbr0,osmbr1,osmbr3,osmbr2
osdmap e1816: 10 osds: 10 up, 10 in
pgmap v3158931: 128 pgs, 1 pools, 11512 MB data, 3522 objects
34959 MB used, 10195 GB / 10229 GB avail
128 active+clean
client io 87723 B/s wr, 8 op/s
$ ceph osd df
ID WEIGHT REWEIGHT SIZE USE AVAIL %USE VAR
6 1.00000 1.00000 1022G 3224M 1019G 0.31 0.92
1 1.00000 1.00000 1022G 3489M 1019G 0.33 1.00
2 1.00000 1.00000 1022G 3945M 1019G 0.38 1.13
4 1.00000 1.00000 1022G 3304M 1019G 0.32 0.95
7 1.00000 1.00000 1022G 3427M 1019G 0.33 0.98
3 1.00000 1.00000 1022G 4361M 1018G 0.42 1.25
9 1.00000 1.00000 1022G 3650M 1019G 0.35 1.04
0 1.00000 1.00000 1022G 3210M 1019G 0.31 0.92
5 1.00000 1.00000 1022G 3577M 1019G 0.34 1.02
8 1.00000 1.00000 1022G 2765M 1020G 0.26 0.79
TOTAL 10229G 34957M 10195G 0.33
MIN/MAX VAR: 0.79/1.25 STDDEV: 0.04
$ ceph osd perf
osd fs_commit_latency(ms) fs_apply_latency(ms)
0 1 2
1 1 2
2 2 3
3 2 3
4 1 2
5 2 3
6 1 2
7 2 3
8 1 2
9 1 1
---
Diego Castro / The CloudFather
GetupCloud.com - Eliminamos a Gravidade
2016-03-31 18:00 GMT-03:00 Oliver Dzombic <i...@ip-interactive.de>:
> Hi Diego,
>
> lets start with the basics and please give us the output of
>
> ceph -s
> ceph osd df
> ceph osd perf
>
> at best before and after you provike the iowait.
>
> Thank you !
>
> --
> Mit freundlichen Gruessen / Best regards
>
> Oliver Dzombic
> IP-Interactive
>
> mailto:i...@ip-interactive.de
>
> Anschrift:
>
> IP Interactive UG ( haftungsbeschraenkt )
> Zum Sonnenberg 1-3
> 63571 Gelnhausen
>
> HRB 93402 beim Amtsgericht Hanau
> Geschäftsführung: Oliver Dzombic
>
> Steuer Nr.: 35 236 3622 1
> UST ID: DE274086107
>
>
> Am 31.03.2016 um 21:38 schrieb Diego Castro:
> > Hello, everyone.
> > I have a pretty basic ceph setup running on top of Azure Cloud, (4 mons
> > and 10 osd's) for rbd images.
> > Everything seems to be working as expected until i put some load on it,
> > sometimes it doesn't complete the process (mysql restore for ex.) and
> > sometimes it does without any issues.
> >
> >
> > Client Kernel: 3.10.0-327.10.1.el7.x86_64
> > OSD Kernel: 3.10.0-229.7.2.el7.x86_64
> >
> > Ceph: ceph-0.94.5-0.el7.x86_64
> >
> > On the client side, i have 100%iowait, a lot of "INFO: task blocked for
> > more than 120 seconds"
> > On the osd side, i have no evidences of faulty disk or read/write
> > latency, but i found the following messages:
> >
> >
> > 2016-03-28 17:04:03.425249 7f7329fc5700 0 bad crc in data 641367213 !=
> > exp 3107019767
> > 2016-03-28 17:04:03.440599 7f7329fc5700 0 -- 10.0.3.9:6800/2272
> > <http://10.0.3.9:6800/2272> >> 10.0.2.5:0/1998047321
> > <http://10.0.2.5:0/1998047321> pipe(0x13cc4800 sd=54 :6800 s=0 pgs=0
> > cs=0 l=0 c=0x13883f40).accept peer addr is really 10.0.2.5:0/1998047321
> > <http://10.0.2.5:0/1998047321> (socket is 10.0.2.5:34702/0
> > <http://10.0.2.5:34702/0>)
> > 2016-03-28 17:04:03.487497 7f7333e6a700 0 -- 10.0.3.9:6800/2272
> > <http://10.0.3.9:6800/2272> submit_message osd_op_reply(20046
> > rb.0.6040.238e1f29.000000000074 [set-alloc-hint object_size 4194304
> > write_size 4194304,write 0~524288] v1753'32512 uv32512 ondisk = 0) v6
> > remote, 10.0.2.5:0/1998047321 <http://10.0.2.5:0/1998047321>, failed
> > lossy con, dropping message 0x12b539c0
> > 2016-03-28 17:04:03.532302 7f733666f700 0 -- 10.0.3.9:6800/2272
> > <http://10.0.3.9:6800/2272> submit_message osd_op_reply(20047
> > rb.0.6040.238e1f29.000000000074 [set-alloc-hint object_size 4194304
> > write_size 4194304,write 524288~524288] v1753'32513 uv32513 ondisk = 0)
> > v6 remote, 10.0.2.5:0/1998047321 <http://10.0.2.5:0/1998047321>, failed
> > lossy con, dropping message 0x1667bc80
> > 2016-03-28 17:04:03.535143 7f7333e6a700 0 -- 10.0.3.9:6800/2272
> > <http://10.0.3.9:6800/2272> submit_message osd_op_reply(20048
> > rb.0.6040.238e1f29.000000000074 [set-alloc-hint object_size 4194304
> > write_size 4194304,write 1048576~524288] v1753'32514 uv32514 ondisk = 0)
> > v6 remote, 10.0.2.5:0/1998047321 <http://10.0.2.5:0/1998047321>, failed
> > lossy con, dropping message 0x12b56e00
> >
> > ---
> > Diego Castro / The CloudFather
> > GetupCloud.com - Eliminamos a Gravidade
> >
> >
> > _______________________________________________
> > ceph-users mailing list
> > ceph-users@lists.ceph.com
> > http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
> >
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