On 03/13/2013 06:38 PM, Josh Durgin wrote:
> Anyone seeing this problem, could you try the wip-rbd-cache-aio branch?
Hi,
just compiled and tested it out, unfortunately there's no big change:
ceph --version
ceph version 0.58-375-ga4a6075 (a4a60758b7a10d51419c1961bb12f26b87672fd5)
libvirt-config:
<disk type='network' device='disk'>
<driver name='qemu' type='raw'/>
<source protocol='rbd' name='rbd/debian-template:rbd_cache=1'>
<host name='10.32.1.177' port='6789'/>
</source>
<target dev='vda' bus='virtio'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x07'
function='0x0'/>
</disk>
within the VM:
cat /dev/zero > /bigfile
again trashes the virtual machine.
reading seems quick(er) though (i can't go back to bobtail without some
hassles on this machine (leveldb on monitor & such), so this is just a
guess):
dd if=/dev/vda of=/dev/null
... 82.0 MB/s
One thing that I've noticed is that the virsh start command returns very
quickly, this used to take longer on bobtail.
> Thanks,
> Josh
you're welcome. I'm really eager helping you out now, I've got a
testbed, if you apply a patch in git I can probably test within 24 hours.
Wolfgang
--
DI (FH) Wolfgang Hennerbichler
Software Development
Unit Advanced Computing Technologies
RISC Software GmbH
A company of the Johannes Kepler University Linz
IT-Center
Softwarepark 35
4232 Hagenberg
Austria
Phone: +43 7236 3343 245
Fax: +43 7236 3343 250
wolfgang.hennerbichler@xxxxxxxxxxxxxxxx
http://www.risc-software.at
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