Re: [ovirt-devel] Interacting with VDSM storage without oVirt Engine
On 05/25/2016 02:00 AM, Martin Sivak wrote:
Hi,
I do not remember exacly, but you might check the source code of
hosted engine's VdsmBackend where we do that too.
https://gerrit.ovirt.org/gitweb?p=ovirt-hosted-engine-ha.git;a=blob;f=ovi...
I think you are missing the prepareImage call.
I think that prepareImage is probably the missing piece to this;
however, it seems that the hosted engine's create_volume method with
calls _get_volume_path which calls prepareImage.
vdsClient's prepareImage command takes a volume UUID as an agrument I've
tried passing the new UUID I created for the createVolume command, the
UUID returned from that command, and a fresh UUID. All of these return
the same error: Volume does not exist
I've also tried manually creating the image directory under the storage
domain directory with the same results for all commands.
Regards
--
Martin Sivak
SLA / oVirt
On Wed, May 25, 2016 at 1:44 AM, Hayley Swimelar <hayley(a)linbit.com> wrote:
> Hello all,
>
> Like the title says, I need to work with VDSM's storage layer without
> involving the engine.
>
> Presently, I'm testing this with NFS domains and have been able to use
> vdsClient to create, attach, and activate a new storage domain, but I have
> not been able to create a new image or volume.
>
> Here are the commands I ran to get to this step, starting with a nfs volume
> already mounted on the machine I ran the commands on.
>
> ----
> vdsClient -s host_name createStorageDomain 1
> 97338d5c-9b6f-1859-b827-e977ed082e53 cli_domain storage_server:/data
>
> vdsClient -s host_name attachStorageDomain
> 97338d5c-9b6f-1859-b827-e977ed082e53 00000001-0001-0001-0001-00000000033c
>
> vdsClient -s host_name activateStorageDomain
> 97338d5c-9b6f-1859-b827-e977ed082e53 00000001-0001-0001-0001-00000000033c
>
> vdsClient -s frodo createVolume 97338d5c-9b6f-1859-b827-e977ed082e53
> 00000001-0001-0001-0001-00000000033c 0288f410-71f1-4b7d-bdb7-e815a93e34ef
> 53690000000 5 1 2 96d7726c-6969-40a5-84bd-0925496b6051 cli_volume
> ----
>
> The last command outputs a new UUID, but there is nothing under
>
/rhev/data-center/00000001-0001-0001-0001-00000000033c/97338d5c-9b6f-1859-b827-e977ed082e53/images/
> directory.
>
> If I pass createVolume an existing image/storage domain UUID, the command
> still outputs a new UUID, but nothing changes under the images directory.
>
> Is there a step that I am missing somewhere in this process?
>
> --
> Hayley Swimelar
> LINBIT | Keeping the Digital World Running
> DRBD — Corosync — Pacemaker
> +1-503-573-1262 x212
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--
Hayley Swimelar
LINBIT | Keeping the Digital World Running
DRBD — Corosync — Pacemaker
+1-503-573-1262 x212