Le lundi 03 juin 2013 à 08:04 -0700, Gregory Farnum a écrit :
> On Sunday, June 2, 2013, Dominik Mostowiec wrote:
> Hi,
> I try to start postgres cluster on VMs with second disk
> mounted from
> ceph (rbd - kvm).
> I started some writes (pgbench initialisation) on 8 VMs and
> VMs freez.
> Ceph reports slow request on 1 osd. I restarted this osd to
> remove
> slows and VMs hangs permanently.
> Is this a normal situation afer cluster problems?
>
>
> Definitely not. Is your cluster reporting as healthy (what's "ceph -s"
> say)? Can you get anything off your hung VMs (like dmesg output)?
> -Greg
>
>
> --
> Software Engineer #42 @ http://inktank.com | http://ceph.com
> _______________________________________________
> ceph-users mailing list
> [email protected]
> http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
Hi,
I also see that with Xen and kernel RBD client, when the ceph cluster
was full : in fact after some errors the block device switch in
read-only mode, and I didn't find any way to fix that ("mount -o
remount,rw" doesn't work). I had to reboot all the VM.
But since I don't have to unmap/remap RBD device, I don't think it's a
Ceph/RBD problem. Probably a Xen or Linux "feature".
Olivier
_______________________________________________
ceph-users mailing list
[email protected]
http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
