ve the bug Boris found may occur in NOT shared storage circumstance
> as mine, and my issue may be resloved by this patch which adds a lock to
> cache image method.
> Thanks again.
>
> 2012-09-25
> --
> Wangpan
> --
>
Your instance directory is shared between compute nodes?
Similar issue was fixed for folsom-rc1
https://review.openstack.org/#/c/12024/
https://bugs.launchpad.net/nova/+bug/1014227
2012/9/24 Razique Mahroua
> Here is what I found
> http://comments.gmane.org/gmane.comp.emulators.qemu/153254
> ht
This actually was fixed in upstream (
https://github.com/openstack/nova/commit/70129ed19db187cc90f74abd5c93c86098d29c27
).
Which OpenStack version you use?
Maybe this patch can be backported there.
There is workaround for this problem, but it's (not a bit) ugly:
http://www.mail-archive.com/opensta
>> But qemu can also write the vm state outside of the backend image, which
>> should be usable with all image backends.
Use that instead managedSave? This should suffice. Save VM state,
suspend domain - do snapshot - restore VM with previous state?
___
Well, according to
http://libvirt.org/html/libvirt-libvirt.html#virDomainManagedSave
domain will be suspended.
After snapshotting there is new _create_domain call:
if state == power_state.RUNNING:
virt_dom.managedSave(0)
... snapshotting...
finally:
Current snapshot implementation for libvirt driver doesn't support
snapshotting for everything except qcow2 (as i remember, because
virDomainManagedSave
will fail on everything except qcow2). So, maybe we can discuss it here.
This for sure can be implemented for lvm using lvm snapshots but it will
2012/7/3 John Garbutt :
>> From: Daniel P. Berrange [mailto:berra...@redhat.com]
>> Sent: 03 July 2012 11:09
>> This would suggest there's a potential use case for a new config parameter
>> FLAGS.local_scratch_path, whose default value matches
>> FLAGS.instances_path if not set.
>
> +1
>
> Cheers,
2012/7/2 Daniel P. Berrange :
> On Mon, Jul 02, 2012 at 10:24:02AM -0700, Matt Joyce wrote:
>> I like the idea of making this a flagfile option.
>
> In the particular case of the qemu-img command described
> in earlier in this thread, I'm not convinced we need a
> new option. Instead of using /tmp
2012/7/1 Lars Kellogg-Stedman :
>> So, maybe setting any of this environment variables for nova-compute
>> to desired value sholuld help.
>
> Yeah, I was expecting that.
>
> Given that this could easily take out a compute host I'd like to see
> it get an explicit configuration value (or default to
As I remember, destination directory for snapshot is created by mkdtemp.
What module documantation says about default temp directory:
tempfile.tempdir
When set to a value other than None, this variable defines the default
value for the dir argument to all the functions defined in this
module.
If t
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