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xen-users
Re: AW: [Xen-users] cowloop and XEN - doesn`t work for me
Hi,
did you get any result for cowdevices... I tried to start a domain with
a cowdevice and I got this kernel panic:
Kernel panic - not syncing: VFS: Unable to mount root fs on
unknown-block(8,1)
Is there any possibility, so that DomU can handle this block device?
Thanks for any help
Mattes
Stephan Seitz wrote:
Hi,
to get cow capabilities, i used cownfsd (
http://www.russross.com/CoWNFS.html ) on an external box, targetting
to a mounted cluster-fs. domU's (as well as the dom0's) of the xen
boxes has been booted from this cow-enabled nfs shares. in small
setups, a cownfsd should also work on a single domO.
your target may vary, but my intention was keeping the fs as
transparent as possible to the domU's.
greetings
Stephan Seitz
-----Ursprüngliche Nachricht-----
Von: xen-users-bounces@xxxxxxxxxxxxxxxxxxx im Auftrag von devzero@xxxxxx
Gesendet: Fr 07.04.2006 22:29
An: cowloop@xxxxxxxxxxxxxxxx; xen-users@xxxxxxxxxxxxxxxxxxx
Betreff: [Xen-users] cowloop and XEN - doesn`t work for me
Hello !
Is anybody using cowloop (http://www.atconsultancy.nl/cowloop/) with XEN ?
i want to use this for saving diskspace and time for copying
rootfs-images.
the module compiles and loads fine (was done by a colleague)
cowloop - (C) 2005 AT Consultancy/AT Computing
cowloop - version: 2.15
cowloop - info: www.ATConsultancy.nl/cowloop
cowloop - maximum allowed cowdevices: 16
cowloop - initialized
after installation and creating the device nodes i see the control
device like this:
xen2:/tmp# ls -la /dev/cow/ctl
brw-r----- 1 root root 241, 255 2006-03-03 12:49 /dev/cow/ctl
but when i use cowdev, it fails :
xen2:/tmp# cowdev -a /tmp/test.ro /tmp/test.cow
/dev/cow/ctl: No such device or address
cat /dev/cow/ctl
cat: /dev/cow/ctl: No such device or address
cat /etc/debian_version
3.1
uname -a
Linux xen2 2.6.12.6-xen0 #2 Thu Mar 2 11:59:01 CET 2006 i686 GNU/Linux
is somebody successfully using cowloop on xen0 for providing
cowloop`ed blockdevices for xen-guests ?
i`m not sure if the problem is with cowloop, or with xen - or a
compatibility issue of both.
maybe someone can help here?
regards
roland k.
systems engineer
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