Re: [Users] Recovering VMs when the engine is lost
Hello Itamar,
-----Original Message-----
From: Itamar Heim [mailto:iheim@redhat.com]
Sent: Freitag, 23. November 2012 14:11
To: Joern Ott
Cc: users(a)ovirt.org; Ayal Baron
Subject: Re: [Users] Recovering VMs when the engine is lost
On 11/23/2012 02:58 PM, Joern Ott wrote:
> Hey Itamar,
>
> this is an NFS storage.
we don't currently support importing an existing data storage domain. so you
need to create a new nfs data domain.
i suggest two 'hacky' options after that 1. less hacky - convert the current nfs
data domain to an export domain, and import the VMs from it.
Is there any info on how to do this, I didn't find much info on export domains on the
wiki. The last time I tried to move thin disks with ovirt GUI from one storage to another,
they were expanded and filled up the destination. In the database, the disks were shown to
be on the destination host and were marked as "invalid", so this procedure also
has some risks.
2. more hacky - recreate the VMs on the new nfs data domain with
exact
same details, and copy the disk over the newly created disks.
benefit of the other is you may be able to move the data, instead of full
blown copy, while in option 1 (which is much simpler/less error prone), you
need to import all vm's again.
The advantage of this would be faster speed as most disks are thin provisioned disks. So I
think, I will go for this option.
there is current work to detect disks from a storage domain:
http://wiki.ovirt.org/wiki/Features/Domain_Scan
when it will be ready (and better when import existing storage domain will
be supported), this would be easier.
>
> KR
> Jörn
>
>> -----Original Message-----
>> From: Itamar Heim [mailto:iheim@redhat.com]
>> Sent: Freitag, 23. November 2012 10:32
>> To: Joern Ott
>> Cc: users(a)ovirt.org; Ayal Baron
>> Subject: Re: [Users] Recovering VMs when the engine is lost
>>
>> On 11/23/2012 11:03 AM, Joern Ott wrote:
>>> Hello everybody,
>>>
>>> I managed to re-install the server the oVirt engine was running on
>>> in my testlab. All the cpu and storages are still there and the VMs
>>> are still running without problems. Is there a way, I can attach the
>>> still existing nodes to the new oVirt engine and recover/import the
VMs?
>>>
>>> Alternatively, is there a way, I can import the VMs disks? I still
>>> know how the data center and clusters were set up and the specs for
>>> the VMs are also documented, so I'd like to re-attach the disks,
>>> which would save me some time compared to the re-installs.
>>>
>>
>> is this an iscsi or nfs data storage domain?
>>
>>
>
>
Kind regards
Jörn