DomU comes up with resierfs filesystem read only

Hi all,

One of our servers comes up with its / read only.
I think I can fix that by doing reiserfsck on it, but I seem unable to umount / and check it and since its read only I cant force it to check on reboot.
So I need to know if there is a way to send extra information at boot or if I can force the domU to boot without mounting root.
Or if somebody have any other suggestions.

Best regards

/Lennart

lelle wrote:
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Hi all,

One of our servers comes up with its / read only.
I think I can fix that by doing reiserfsck on it, but I seem unable to
umount / and check it and since its read only I cant force it to check
on reboot.
So I need to know if there is a way to send extra information at boot or
if I can force the domU to boot without mounting root.
Or if somebody have any other suggestions.

Best regards

/Lennart

[/color]

Is this on xen and how is the domu disks seen by dom0? What I mean are your
vm’s on a san? What are you using for the domu disks? Are you using off ocfs
or physical disks assigned to domu?

Hi, sorry for the lack of information. It’s om xen and the wm are raw disk in a san.
the dom0 is seeing the disk by there scsi id.

/Lennart

lelle wrote:
[color=blue]

Hi, sorry for the lack of information. It’s om xen and the wm are raw
disk in a san.
the dom0 is seeing the disk by there scsi id.

/Lennart

[/color]

Ok than you can repair the disk using the dom0 fsck. Make sure the vm is
shutdown and than from the command line on dom0 run fsck -options /dev/sd?
where dev/sdx is the disk for the vm. It may need to be /dev/sd?1 or 2 since
it is a vm. I have recovered several times this way. Using raw disks is a
lot easier than if it is file-backed disk. That one is a little more
complicated. This should fix you up.

thanks a lot, worked great

/Lennart