Or why not just attach a new disk to the guest and copy stuff inside
Hi Henrik: When I tried to copy the file descriptor file a "Stale NFS file handle" error was generated: $ cp -f /proc/13196/fd/9 /tmp/guest.img cp: cannot stat `/proc/13196/fd/9': Stale NFS file handle I suppose that makes sense because the file was accidently deleted but from the NFS server perspective it really isn't there. Do you know of any way to work around it? the guest? I understand how that would work to recover individual files/directories but I don't understand how I would be able to recover the entire image. Can you explain? Thanks, Joe -----Original Message----- From: libvirt-users-bounces@redhat.com [mailto:libvirt-users-bounces@redhat.com] On Behalf Of Joe Linoff Sent: Monday, November 05, 2012 11:55 AM To: Henrik Ahlgren Cc: libvirt-users@redhat.com Subject: Re: [libvirt-users] re-create disk image file Hi Henrik: Thank you. Both suggestions are excellent. Have you noticed spam messages from this email list? I have gotten several in the past couple of days. Regards, Joe -----Original Message----- From: Henrik Ahlgren [mailto:pablo@seestieto.com] Sent: Monday, November 05, 2012 11:53 AM To: Joe Linoff Cc: libvirt-users@redhat.com Subject: Re: [libvirt-users] re-create disk image file On Mon, Nov 05, 2012 at 11:03:11AM -0800, Joe Linoff wrote:
I am curious about how to re-create a disk image file from a running guest when the original disk image file is accidentally deleted. This came up recently during a test scenario but I couldn't figure out how to do it.
If you have unlinked the image, but qemu-kvm (or whatever hypervisor you are running) still has it open, you should be able to to recover it by going to /proc/PID/fd and looking for a file descriptor number that is a symlink to your deleted image. Just copy it to a safe place. I would first run sync inside the guest and maybe suspend it. It would be nice if you could switch it to single user mode with all filesystems mounted read-only, but whatever you do, avoid destroying the domain. Or why not just attach a new disk to the guest and copy stuff inside the guest? _______________________________________________ libvirt-users mailing list libvirt-users@redhat.com https://www.redhat.com/mailman/listinfo/libvirt-users