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Re: [Xen-users] Xen - LVM and RAID
| To: | Thomas Bellembois <thomas.bellembois@xxxxxxxxx> |
|---|---|
| Subject: | Re: [Xen-users] Xen - LVM and RAID |
| From: | Nico Kadel-Garcia <nkadel@xxxxxxxxx> |
| Date: | Fri, 08 Feb 2008 22:53:11 +0000 |
| Cc: | xen-users@xxxxxxxxxxxxxxxxxxx |
| Delivery-date: | Fri, 08 Feb 2008 14:49:25 -0800 |
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Thomas Bellembois wrote: Yes. *NEVER* do RAID *inside* a DomU. Every cycle in DomU for disk management has to be filtered down to the hypervisor anyway, and software RAID is thus a complete waste in DomU. Leave the disk management to the Dom0, because all you're doing is adding a layer of complexity to the DomU interactions with hardware that buy you *nothing* unless your software itself is capable of corrupting the internal filesystem and you want to poke around with it. But usually there's no point.Hello, I wonder if we can use RAID (hard) under LVM for Xen domU. What kind of RAID is recommanded ? I was thinking about the following configuration: - RAID 1 (two 70 GB disks) for the dom0 - RAID 5 (three 285 GB disks) for domU on LVM partitions Any idea ? Regards, Thomas Now, if you mean setting up 3 disks on Dom0 using RAID5, great. Better yet, use a cheap hardware controller and keep the RAID processing off of Dom0, too. _______________________________________________ Xen-users mailing list Xen-users@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-users |
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