From alex.tuxx at gmail.com Thu Jan 17 15:04:45 2013 Content-Type: multipart/mixed; boundary="===============5303837889307378646==" MIME-Version: 1.0 From: Alex Leonhardt To: users at ovirt.org Subject: Re: [Users] Storage domain weirdness (or design) Date: Thu, 17 Jan 2013 20:04:40 +0000 Message-ID: <50F85958.5050405@gmail.com> In-Reply-To: 50F85373.4080101@redhat.com --===============5303837889307378646== Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable This is a multi-part message in MIME format. --------------030502000706000808000203 Content-Type: text/plain; charset=3DISO-8859-1; format=3Dflowed Content-Transfer-Encoding: 7bit Hiya, Yes i can choose the storage domain, but I cannot force the host that is = to be used for creating it. Even with 1Gbit network, creating a 80GB = disk / 40 GB disk is still significantly longer process than actually = required when doing a "dd" of /dev/null over the network. Is it possible to manually change who is SPM master, create the = disks/VMs required, and change it back ? How would that change affect = the running VMs / would they try to migrate to the other HV ? Alex On 01/17/2013 07:39 PM, Maor Lipchuk wrote: > Hi Alex, > The storage domains are part of the Data Center, and should not be > related to clusters. > Clusters are used for migrating VMs, which are the qemu processes, > between hosts. > Disks are created on the storage domains regardless to clusters. > > The host which write the data in the storage domain to create the disk > is the SPM. > You should have only one SPM in each Data Center (You can spot which > host is your SPM by looking at the SPM column in the hosts tab) > When you create a disk you should be able to choose the storage domain > which you want the disk to be created on. > > Regards, > Maor --------------030502000706000808000203 Content-Type: text/html; charset=3DISO-8859-1 Content-Transfer-Encoding: 7bit Hiya,

Yes i can choose the storage domain, but I cannot force the host that is to be used for creating it. Even with 1Gbit network, creating a 80GB disk / 40 GB disk is still significantly longer process than actually required when doing a "dd" of /dev/null over the network.

Is it possible to manually change who is SPM master, create the disks/VMs required, and change it back ? How would that change affect the running VMs / would they try to migrate to the other HV ?

Alex

On 01/17/2013 07:39 PM, Maor Lipchuk wrote:

Hi Alex,
The storage domains are part of the Data Center, and should not be
related to clusters.
Clusters are used for migrating VMs, which are the qemu processes,
between hosts.
Disks are created on the storage domains regardless to clusters.

The host which write the data in the storage domain to create the disk
is the SPM.
You should have only one SPM in each Data Center (You can spot which
host is your SPM by looking at the SPM column in the hosts tab)
When you create a disk you should be able to choose the storage domain
which you want the disk to be created on.

Regards,
Maor

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