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Re: [Xen-users] Persistent block device naming by UUID
- To: Predrag Punosevac <punosevac72@xxxxxxxxx>, xen-users@xxxxxxxxxxxxxxxxxxxx
- From: Hans van Kranenburg <hans@xxxxxxxxxxx>
- Date: Sun, 24 Feb 2019 00:01:52 +0100
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- Delivery-date: Sat, 23 Feb 2019 23:03:13 +0000
- List-id: Xen user discussion <xen-users.lists.xenproject.org>
- Openpgp: preference=signencrypt
Hi,
On 2/22/19 5:20 AM, Predrag Punosevac wrote:
> [...]
>
> I am reading documentation back and forth in search of a better
> persistent naming method. Namely
>
> disk = [ 'phy:/dev/sdc,xvda,rw' ]
>
> is not persistent between the boots. I like putting my DomUs on a
> dedicated block devices (M.2 SSDs) and when one of them dies the disk
> labels are switching on the reboot. Ideally I would like to have
> something like
>
> disk = [ 'phy:UUID="839ca898-db1d-4c89-ad3f-faf6909bf448",xvda,rw' ]
What about...
disk = [
'/dev/disk/by-uuid/839ca898-db1d-4c89-ad3f-faf6909bf448,raw,xvda,rw'
]
By the way, the phy: format is long deprecated. See man 5
xl-disk-configuration about that.
> instead. That seems to be unsupported
Well, you have the symlinks in /dev/ ;-]
> https://xenbits.xen.org/docs/4.11-testing/
>
> I do understand that uuid in Xen lingo is used for something else
>
> https://www.practicalxenserver.org/tutorials/miscellaneous-tutorials/working-with-uuids/
>
> Am I missing here something?
Hans
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