Re: [Xen-users] LVM snapshots to provide HA iSCSI storage

[John Madden <jmadden@xxxxxxxxxxx>]

> > I've done this with md mirroring instead of lvm but I haven't gotten to 
> > the live migration part.  You create and manage the md on dom0 and give 
> > that to the domU via phy: mappings.
>         Do you have any documentation of this? I could be interested. I am
> trying to do it with lvm volumes and dmsetup, but I am getting problems
> when the iscsi connection fails.
Not really.  It's a standard scsi disk, so you create a VG, put the disk 
in it, create an LV, and then use mdadm to create the mirror with your 
local disk.  When iSCSI fails, it should fail the same way a SCSI disk 
would fail if you pulled the cable out of it.  My targets are all ietd, 
so I just turned the service off to test.
John



--
John Madden
Sr UNIX Systems Engineer
Ivy Tech Community College of Indiana
jmadden@xxxxxxxxxxx

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