On 02/04/2014 03:10 PM, Elad Ben Aharon wrote:
Actually, the best way to do it would be to create another storage domain and 
migrate all the VMs's disks to it (you can do it while the VMs are running), 
then you won't suffer from a down time.

notice this will create a snapshot for your vms and may change them from raw to qcow. also, this not supported for shared disks.

If you don't have the option to do so, the best way to do it would be to shut 
down the VMs, put the storage domain to 'Maintenance' and then perform the 
storage server network change. When the connection to the storage is fixed, 
activate the domain and resume the VMs manually.

that's assuming the domain was added using dns and not ip address, and that the dns expiration/caching on all hosts will notice the new ip address.



----- Original Message -----
From: "Koen Vanoppen" <vanoppen.k...@gmail.com>
To: "Elad Ben Aharon" <ebena...@redhat.com>, users@ovirt.org
Sent: Tuesday, February 4, 2014 2:57:57 PM
Subject: Re: [Users] Storage server

For the moment, nothing is going on. The change is planned on Thursday. So,
correct me if I'm wrong, you say that the fastest and easiest way is to
suspend all the machines, make the change of the storage server, rediscover
the iscsi server and then bring the vm's back up?

Kind regards,
Koen
On Feb 4, 2014 1:47 PM, "Elad Ben Aharon" <ebena...@redhat.com> wrote:

Hi,

I suppose that those VMs are now in 'Paused' state, correct me if I'm
wrong.
After connectivity with storage comes back, all VMs which couldn't detect
their disks should be resumed from 'Paused' to 'Up' state automatically. It
shouldn't take them a long time to change their state (a few minutes).

----- Original Message -----
From: "Koen Vanoppen" <vanoppen.k...@gmail.com>
To: users@ovirt.org
Sent: Tuesday, February 4, 2014 2:32:46 PM
Subject: [Users] Storage server

Dear All,

At work, the network guys have come to a discovery that they have made a
mistake in their network configuration... The Storage server that we use as
ISCSI target in oVirt, is in the wrong VLAN, so the wrong IP address...

What is the best way to make sure that all of our vms (40) that are using
this scsi storage will come up again after the storage server has changed
his ip?
What are the best steps to be taken...?
We are using oVirt Engine Version: 3.3.1-2.el6

Kind Regards,

Koen

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