[Gluster-devel] Qemu glusterfs, exposing complete bricks instead of individual images as shared storage to VM's ?
linux at eikelenboom.it
Fri Nov 29 23:46:20 UTC 2013
Saturday, November 30, 2013, 12:32:50 AM, you wrote:
> On Fri, Nov 29, 2013 at 5:06 PM, Sander Eikelenboom <linux at eikelenboom.it> wrote:
> I'm using glusterfs for quite some time on my server for shared-storage to VM's.
> At the moment this had to go over tcp/ip bridge between host and guests, so
> i was interested in the option to use glusterfs directly with qemu. But it seems it
> only supports to expose individual images files that reside on a glusterfs brick.
> Would it be possible to extend this and make a complete brick available as disk to qemu as shared storage ?
> (so multiple vm's and the host can share this same storage space)
> Sounds like you want to use Gluster as a backing store for the VM images through qemu, but in addition, you probably want to mount a common glusterfs volume inside the vms as well. That's how you do it!
But that common glusterfs would be using tcp/ip then and not libgfapi or not ?
Could be i'm misreading the docs but specifying the image file seems mandatory:
Gluster drive specification in QEMU
And since using libgfapi should benefit performance by removing the necessity to converting everything to networking packets and vice versa.
So it would be nice if i could do:
And that volume would be mountable in the VM (as a block device), don't know if that would be easily possible
though since it probably is not a real normal block device.
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