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xen-users
Re: [Xen-users] SWAP on domUs is not mounted.
Tom Brown wrote:
On Mon, 26 Feb 2007, kanour-xen wrote:
Tom Brown wrote:
> - domU disk config:
> disk=['phy:/dev/vm_vg/monit1_root,hda1,w',
> 'phy:/dev/vm_vg/monit1_swap,hda2,w']
you've exported hda1 and hda2
> - !!!! domU does not have /dev/hda1 /dev/hda2 in /dev directory
> Some other commands on domU (monit1):
> /etc/fstab
> /dev/sda1 / ext3 defaults 1 2
> /dev/sda2 none swap sw 0 0
... and told it to look for sda1 and sda2
(sda does not match hda)
pick one, I don't think it matters which.
try swapon /dev/hda2 and see if _that_ works :)
then again it may fail due to the missing /dev/hda2 file.
-Tom
Sorry, That was just typo. I have both /dev/hda.
I was trying hda and even sda. Both do not work. It is strength that
domUs do not have it in /dev.
Thanks for another advice.
ok, what do you see in /sys/block in the domU?
e.g.
[root@pd3 ~]# ls /sys/block/
loop0/ loop3/ loop6/ ram1/ ram12/ ram15/ ram4/ ram7/ sda1/
loop1/ loop4/ loop7/ ram10/ ram13/ ram2/ ram5/ ram8/ sdb1/
loop2/ loop5/ ram0/ ram11/ ram14/ ram3/ ram6/ ram9/ sdc1/
and in dom0 I have
[root@xen5 ~]# xm list | grep pallad
palladium 8 2048 2 ------ 5410190.9
[root@xen5 ~]# xm block-list 8
(2049 ((virtual-device 2049) (backend-id 0) (state 4) (backend
/local/domain/0/backend/vbd/8/2049) (ring-ref 8) (event-channel 9)))
(2065 ((virtual-device 2065) (backend-id 0) (state 4) (backend
/local/domain/0/backend/vbd/8/2065) (ring-ref 9) (event-channel 10)))
(2081 ((virtual-device 2081) (backend-id 0) (state 4) (backend
/local/domain/0/backend/vbd/8/2081) (ring-ref 10) (event-channel 11)))
it may look a _lot_ different on your box, this is a xen 3.0.0 box :(
and it's different on my 3.0.3 boxes
but the /sys/block output should show whether or not your domU has the
extra device, and the block-list should show whether or not your dom0
is trying to export the extra device.
-Tom
Hi Tom. Here is what you wanted.
domU
monit1:~# ll /sys/block/
total 0
drwxr-xr-x 21 root root 0 2007-02-26 06:55 .
drwxr-xr-x 11 root root 0 2007-02-26 06:55 ..
drwxr-xr-x 3 root root 0 2007-02-26 06:55 hda1
drwxr-xr-x 3 root root 0 2007-02-26 06:55 hda2
drwxr-xr-x 3 root root 0 2007-02-26 06:55 md0
drwxr-xr-x 2 root root 0 2007-02-26 06:55 ram0
drwxr-xr-x 2 root root 0 2007-02-26 06:55 ram1
drwxr-xr-x 2 root root 0 2007-02-26 06:55 ram10
drwxr-xr-x 2 root root 0 2007-02-26 06:55 ram11
drwxr-xr-x 2 root root 0 2007-02-26 06:55 ram12
drwxr-xr-x 2 root root 0 2007-02-26 06:55 ram13
drwxr-xr-x 2 root root 0 2007-02-26 06:55 ram14
drwxr-xr-x 2 root root 0 2007-02-26 06:55 ram15
drwxr-xr-x 2 root root 0 2007-02-26 06:55 ram2
drwxr-xr-x 2 root root 0 2007-02-26 06:55 ram3
drwxr-xr-x 2 root root 0 2007-02-26 06:55 ram4
drwxr-xr-x 2 root root 0 2007-02-26 06:55 ram5
drwxr-xr-x 2 root root 0 2007-02-26 06:55 ram6
drwxr-xr-x 2 root root 0 2007-02-26 06:55 ram7
drwxr-xr-x 2 root root 0 2007-02-26 06:55 ram8
drwxr-xr-x 2 root root 0 2007-02-26 06:55 ram9
dom0
dom0:~# xm list | grep monit1
monit1 18 256 1 -b---- 4.4
dom0:~# xm block-list monit1
Vdev BE handle state evt-ch ring-ref BE-path
769 0 0 4 6 8 /local/domain/0/backend/vbd/18/769
770 0 0 4 7 9 /local/domain/0/backend/vbd/18/770
What do you think? Is there anything else what I can check?
I installed xen 3.0.4_1
I have no udev installed on both dom0 and domU (on my running 2nd
machine xen 3.0.1 on i386 I have not udev neither).
Jiri
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