Re: [Xen-users] iSCSI-LUN as VBD

["Tijl Van den Broeck" <subspawn@xxxxxxxxx>]

On 5/23/06, Matthew Wild <M.Wild@xxxxxxxx> wrote:

I have iSCSI vbd based domUs working in SuSE10.1, xen-3.0.2 and
open-iscsi-0.5.545-9 against an IET server.

What system do you have ? I used the standard suse 10.1 pkgs on a x86_64 system but open-iscsi-0.5.545 caused a crash on the iscsi modules. iSCSI didn't work until I manually compiled and installed the lastest open-iscsi sources.

where /dev/disk/by-id/scsi-0049003c... would represent /dev/sdc for the domU
root space and /dev/disk/by-id/scsi-0049005a... would represent /dev/sdd for
the domU swap space and are individual disks as seen by the dom0. I'm using
the /dev/disk/by-id names for each disk as these are unique names as seen by
all iSCSI initiators and allow me to migrate live domUs between physical
dom0s.

To perform live migration, do you have a separate iscsi target server or can one use one of the dom0's? I want to test live migration with 2 dom0's, one has a large disk attached to it which I want to use for the iSCSI target. But if I try to connect to the iSCSI shares on both dom0's at the same time... the  dom0 with the large disk hangs.

Am I doing something wrong here? My impression is/was that both xen's mount the same iscsi drive at the same time when transferring (hence the need for GFS/OCFS2 I've read about in this list), or does one dom0 safely unmount and the other one mounts?


Greetings

Tijl Van den Broeck

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