Re: iSCSI initiator problems

[Thor Lancelot Simon <tls%rek.tjls.com@localhost>]

On Wed, Mar 11, 2009 at 08:29:58AM +0100, Adam Hamsik wrote:
> Hi,
> On Mar,Wednesday 11 2009, at 3:40 AM, Toru Nishimura wrote:
>
>> Hi,
>>
>> I'm considering to have diskless Xen DOMU cluster.  I suppose
>> there are choices among how DOMU storage is prepared and
>> I would like to collect suggestions;
>>
>> - have large files on NFS server /iSCSI service provider.
>> - or, make Xen DOMU normal NFS clients.
>> - or, other ...
>
> You can place DomU disks on LVM on Dom0 and exports Logical partitions  
> like disks
> with iSCSI. You will need to boot kernel + ramdisk which will connect/ 
> mount iSCSI
> disk during boot and chroot to mounted disk if it is possible with  
> iSCSI.

Why do any of these when one can just use Xen disk devices?  They should
be much more efficient than iSCSI.

The only reason I can see to use NFS is if the data must be write-shared.
But iSCSI won't work in that case either.