Re: [Xen-users] iscsi vs nfs for xen VMs

[Rudi Ahlers <Rudi@xxxxxxxxxxx>]

On Thu, Jan 27, 2011 at 10:38 AM, Adi Kriegisch <adi@xxxxxxxxxxxxxxx> wrote:
> Hi!
>
>> Il 26/01/2011 17:07, yue ha scritto:
>> > yes, there has no a good silution.
>> > 1.san+gfs2(ocfs2)
>> > 2.san+clvm
>> > 3san+clvm+gfs2(ocfs2)
>> > 4san+normal filesystem, ext3.....
>> > which has the better performance?
>>
>> 4 if your SAN exports as many luns as your VM disks
>>
>> 2 is better IMHO ...more flexible, not so high overhead
> 100% ACK. The best thing about this: There is no overhead in using CLVM:
> The cluster locking is only required when modifying LVs. For the rest of
> the time performance is (most probably) slightly better than when using
> LUNs directly because LVM will take care of readahead dynamically.
>
> -- Adi
>
> _______________________________________________



How would you do this?

Export LUN1 from SAN1 & LUN1 from SAN2 to the same client PC, and then
setup cLVM on top of the 2 LUN's?

What do you then do if you want redundancy, between 2 client PC's, i.e
similar to RAID1 ?



-- 
Kind Regards
Rudi Ahlers
SoftDux

Website: http://www.SoftDux.com
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