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xen-devel
RE: [Xen-devel] starting domain when block device already mounted
> I just had a filesystem hosed in an unpriv domain (ext3
> errors all over
> the place), and then when I went to do a fsck on the block device it
> told me it was already mounted, and sure enough, dom0 already had the
> device mounted. Would that cause a filesystem crash, or at
> least errors?
> Dom0 wasn't doing anything to the filesystem, and the unpriv
> domain had
> been up for a few weeks before this occurred.
Mounting an ext3 file system writeable in two domains is almost certain
to destroy it.
The tools try and prevent this. Was it a 'file:' vbd? There's currently
no safety checks for those, but there should be for physical partition
and LVM volumes.
Ian
> Anyway, I've done this a few times before by mistake - made a few
> changes to the unpriv domain's filesystem from dom0 and forgot to
> unmount it before starting the domain. Is there any easy way
> to get 'xm
> create' to check before starting that none of the block devices it is
> about to export are in use? Such a thing would probably save me
> countless headaches in the future! (or maybe it's been done
> already? I'm
> running 2.0.1)
>
> Thanks
>
> James
>
>
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