Re: Random blocks when accessing rbd images

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]



Hi Guido,
I am running ceph version 0.39-37-g54758ab (commit:54758abccf429122c1bc3bce6d01bc33f1cfe238) on my cluster and I do not see this problem. Do you use the qemu rbd block driver or the kernel mount?
How did you install ceph, via the packages?

-martin


Am 15.12.2011 16:45, schrieb Guido Winkelmann:
Am Donnerstag, 15. Dezember 2011, 17:32:25 schrieben Sie:
On 12/15/2011 05:07 PM, Guido Winkelmann wrote:
Hi,

I've got a small ceph cluster with one mon, one mds and two osds (all on
the same machine, for now), that I want to use as a block- and file
storage backend for qemu machine virtualisation.

I found that read access to some of the rbd images, or parts of some of
them sometimes blocks indefinitely, usually after the image has been
sitting around untouched for a while, for example over night. This has
the effect that virtual machines that try to access their disks as well
as rbd commands like "rbd cp" will just hang indefinitely.

  I found that these blocks can usually be "fixed" by restarting one of
  the>
osds.

The last time this happened, ceph -s reported one of the osds to be in
state "active+clean+scrubbing". (I'm afraid I don't have the complete
output from ceph -s anymore.)

Does anybody have any idea what could be going wrong here?

I think it's fixed in v0.39

I'm already using 0.39, so, no. (Should have mentioned that to start with...)

         Guido
--
To unsubscribe from this list: send the line "unsubscribe ceph-devel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html

--
To unsubscribe from this list: send the line "unsubscribe ceph-devel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html


[CEPH Users]     [Information on CEPH]     [Linux USB Devel]     [Video for Linux]     [Linux Audio Users]     [Photo]     [Yosemite News]    [Yosemite Photos]    [Free Online Dating]     [Linux Kernel]     [Linux SCSI]     [XFree86]

Add to Google Powered by Linux