| |
|
 |
|
 |
|
|
|
| |
|
|
xen-users
Re: [Xen-users] problem with extra storage via iscsi
Tammo Schuelke wrote:
open-iscsi assigns the discoverd LUN also to /dev/sda
So the domU does stop working since it's losing its root partition?
If not, what's the output of udevinfo -q symlink -n /dev/sda?
Thanks for your reply!
No, the domU keeps working, I think because all partitions are already
mounted when open-iscsi starts. Output of udevinfo:
root@guest1 ~ # udevinfo -q symlink -n /dev/sda
disk/by-id/scsi-36006048c630e7b571c1ed50a0956f129
disk/by-path/ip-10.4.1.201:3260-iscsi-iqn.1992-05.com.emc:ck2000809002410000-7-lun-1
In general, iSCSI from within a domU should be working since it's plain TCP/IP.
Yes, that is exactly what I thought.
Performance wise it would probably be better to connect to the targets in dom0
and assign the LUN to domU as a regular block device.
Why would performance be better with an extra layer (dom0)? Connecting
the LUN to dom0 and assigning it as a regular blockdevice to domU has a
large drawback: there is no protection against using the same
blockdevice in multiple domU's. Normally LUN masking would protect
against that, but a LUN mask is based on IQN, and the IQN belongs to the
dom0.
Regards,
Gertjan Oude Lohuis
_______________________________________________
Xen-users mailing list
Xen-users@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-users
|
|
|
| |
|
Home