Re: [Xen-users] SAN high available best practices

[Donny Brooks <dbrooks@xxxxxxxxxxxxxxxx>]

On 05/03/2012 08:03 AM, Donny Brooks wrote:
> I am finally getting around to setting up our Dell MD3200i iSCSI SAN 
> to be the disk storage for our xen dom0's so that we can utilize HA 
> functions. Each of our dom0 host machines have 4 NIC's. So far I have 
> 2 NIC's bonded as a mode6 for trunk/vlan traffic and the other two 
> NIC's setup to access the SAN directly. My main question is this 
> though: How should I handle the LUN's and access to the various 
> dom0's? We use lvm based disks for domu's for performance and snapshot 
> features. Should I create individual lv's for each disk or create one 
> large vg and then create the individual lv's? As you can tell I have 
> never done this part before so any good guides online I could read 
> would be great. We do want to use xen's HA functions so if a physical 
> host has problems the domu's on that host can fail over to the other 
> node without interruption. This is possible right? Unlike others where 
> it stops the domu and then starts it on the other dom0 causing downtime.
> Thanks in advance for any and all input.
>
> Donny B.
>
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Forgot to mention that we will have both HVM and PV domu's on these 
servers. Didn't know if that made a difference.
Donny B.

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