Cephfs: sporadic damages uploaded files

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I suspect the client does not have permission to write to pool 3.
could you check if the contents of XXX.iso.2 are all zeros.

Yan, Zheng

On Wed, Aug 27, 2014 at 5:05 PM, Michael Kolomiets
<michael.kolomiets at gmail.com> wrote:
> Hi!
> I use ceph pool mounted via cephfs for cloudstack secondary storage
> and have problem with consistency of files stored on it.
> I have uploaded file for three time and checked it, but at each time i
> have got different checksum (at second time it was a valid checksum).
> Each try of upload gave permanent result (I checked twice each time),
> but each next try did different one.
> Please help me with finding of PoF.
>
> root at lw01p01-mgmt01:/export/secondary# uname -a
> Linux lw01p01-mgmt01 3.14.1-031401-generic #201404141220 SMP Mon Apr
> 14 16:21:48 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux
>
>
> root at lw01p01-mgmt01:/export/secondary# ceph status
>     cluster e405d974-3fb6-42c8-b34a-a0ac5a1fef3a
>      health HEALTH_OK
>      monmap e1: 3 mons at
> {lw01p01-node01=10.0.15.1:6789/0,lw01p01-node02=10.0.15.2:6789/0,lw01p01-node03=10.0.15.3:6789/0},
> election epoch 52, quorum 0,1,2
> lw01p01-node01,lw01p01-node02,lw01p01-node03
>      mdsmap e17: 1/1/1 up {0=lw01p01-node01=up:active}
>      osdmap e338: 20 osds: 20 up, 20 in
>       pgmap v160161: 656 pgs, 6 pools, 30505 MB data, 8159 objects
>             61377 MB used, 25512 GB / 25572 GB avail
>                  656 active+clean
>   client io 0 B/s rd, 1418 B/s wr, 1 op/s
>
>
> root at lw01p01-mgmt01:/export/secondary# mount | grep ceph
> 10.0.15.1:/ on /export/secondary type ceph
> (name=cloudstack,key=client.cloudstack)
>
>
> root at lw01p01-mgmt01:/export/secondary# cephfs /export/secondary show_layout
> layout.data_pool:     3
> layout.object_size:   4194304
> layout.stripe_unit:   4194304
> layout.stripe_count:  1
>
>
> root at lw01p01-mgmt01:/export/secondary# wget
> http://lw01p01-templates01.example.com/ISO/XXX.iso
> --2014-08-27 10:12:39--  http://lw01p01-templates01.example.com/ISO/XXX.iso
> Resolving lw01p01-templates01.example.com
> (lw01p01-templates01.example.com)... 10.0.15.1
> Connecting to lw01p01-templates01.example.com
> (lw01p01-templates01.example.com)|10.0.15.1|:80... connected.
> HTTP request sent, awaiting response... 200 OK
> Length: 3249803264 (3.0G) [application/x-iso9660-image]
> Saving to: 'XXX.iso'
>
> 100%[=====================================================>]
> 3,249,803,264  179MB/s   in 18s
>
> 2014-08-27 10:12:57 (173 MB/s) - 'XXX.iso' saved [3249803264/3249803264]
>
> root at lw01p01-mgmt01:/export/secondary# md5sum XXX.iso
> 45b940c6cb76ed0e76c9fac4cba01c3c  XXX.iso
> root at lw01p01-mgmt01:/export/secondary# md5sum XXX.iso
> 45b940c6cb76ed0e76c9fac4cba01c3c  XXX.iso
>
> root at lw01p01-mgmt01:/export/secondary# wget
> http://lw01p01-templates01.example.com/ISO/XXX.iso
> --2014-08-27 10:14:11--  http://lw01p01-templates01.example.com/ISO/XXX.iso
> Resolving lw01p01-templates01.example.com
> (lw01p01-templates01.example.com)... 10.0.15.1
> Connecting to lw01p01-templates01.example.com
> (lw01p01-templates01.example.com)|10.0.15.1|:80... connected.
> HTTP request sent, awaiting response... 200 OK
> Length: 3249803264 (3.0G) [application/x-iso9660-image]
> Saving to: 'XXX.iso.1'
>
> 100%[=====================================================>]
> 3,249,803,264  154MB/s   in 19s
>
> 2014-08-27 10:14:30 (161 MB/s) - 'XXX.iso.1' saved [3249803264/3249803264]
>
> root at lw01p01-mgmt01:/export/secondary# md5sum XXX.iso.1
> 5488d85797cd53d1d1562e73122522c1  XXX.iso.1
> root at lw01p01-mgmt01:/export/secondary# md5sum XXX.iso.1
> 5488d85797cd53d1d1562e73122522c1  XXX.iso.1
>
> root at lw01p01-mgmt01:/export/secondary# wget
> http://lw01p01-templates01.example.com/ISO/XXX.iso
> --2014-08-27 10:15:23--  http://lw01p01-templates01.example.com/ISO/XXX.iso
> Resolving lw01p01-templates01.example.com
> (lw01p01-templates01.example.com)... 10.0.15.1
> Connecting to lw01p01-templates01.example.com
> (lw01p01-templates01.example.com)|10.0.15.1|:80... connected.
> HTTP request sent, awaiting response... 200 OK
> Length: 3249803264 (3.0G) [application/x-iso9660-image]
> Saving to: 'XXX.iso.2'
>
> 100%[=====================================================>]
> 3,249,803,264  160MB/s   in 20s
>
> 2014-08-27 10:15:44 (152 MB/s) - 'XXX.iso.2' saved [3249803264/3249803264]
>
> root at lw01p01-mgmt01:/export/secondary# md5sum XXX.iso.2
> 5e28d425f828440b025d769609c5bb41  XXX.iso.2
> root at lw01p01-mgmt01:/export/secondary# md5sum XXX.iso.2
> 5e28d425f828440b025d769609c5bb41  XXX.iso.2
>
> --
> Michael Kolomiets
> _______________________________________________
> ceph-users mailing list
> ceph-users at lists.ceph.com
> http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com


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