[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] starting domain when block device already mounted
> Are you mounting the device within dom0 after creating the domU? I'm > not sure there's anything Xend can do about that. Yes that's correct - if you try and mount domain filesystems read / write after the domain is started then it'll probably succeed but the filesystem will get hosed. Even mounting read-only in dom0 will confuse the filesystem driver if the domain writes anything. Cheers, Mark > Regards, > > James Harper wrote: > >My disks line is: > > > >disk = [ 'phy:vg00/mail,0301,w', 'phy:vg00/mail-swap,0302,w' ] > > > >The unpriv domain is up and running again, although I don't know what > >damage has been done. /etc/passwd was missing though which is not a good > >sign. I found it in /lost+found, but who knows what else is missing! > > > >Thanks > > > >James > > > >>-----Original Message----- > >>From: Ian Pratt [mailto:m+Ian.Pratt@xxxxxxxxxxxx] > >>Sent: Monday, 17 January 2005 09:34 > >>To: James Harper; xen-devel@xxxxxxxxxxxxxxxxxxxxx > >>Subject: 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 > >>> > >>> > >>>------------------------------------------------------- > >>>The SF.Net email is sponsored by: Beat the post-holiday blues > >>>Get a FREE limited edition SourceForge.net t-shirt from ThinkGeek. > >>>It's fun and FREE -- well, > > > >almost....http://www.thinkgeek.com/sfshirt > > > >>>_______________________________________________ > >>>Xen-devel mailing list > >>>Xen-devel@xxxxxxxxxxxxxxxxxxxxx > >>>https://lists.sourceforge.net/lists/listinfo/xen-devel > > > >------------------------------------------------------- > >The SF.Net email is sponsored by: Beat the post-holiday blues > >Get a FREE limited edition SourceForge.net t-shirt from ThinkGeek. > >It's fun and FREE -- well, almost....http://www.thinkgeek.com/sfshirt > >_______________________________________________ > >Xen-devel mailing list > >Xen-devel@xxxxxxxxxxxxxxxxxxxxx > >https://lists.sourceforge.net/lists/listinfo/xen-devel > > ------------------------------------------------------- > The SF.Net email is sponsored by: Beat the post-holiday blues > Get a FREE limited edition SourceForge.net t-shirt from ThinkGeek. > It's fun and FREE -- well, almost....http://www.thinkgeek.com/sfshirt > _______________________________________________ > Xen-devel mailing list > Xen-devel@xxxxxxxxxxxxxxxxxxxxx > https://lists.sourceforge.net/lists/listinfo/xen-devel ------------------------------------------------------- The SF.Net email is sponsored by: Beat the post-holiday blues Get a FREE limited edition SourceForge.net t-shirt from ThinkGeek. It's fun and FREE -- well, almost....http://www.thinkgeek.com/sfshirt _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxxxx https://lists.sourceforge.net/lists/listinfo/xen-devel
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