> I did some expanding and shrinking of my volumes and then attempted to > take a snapshot. I got an error message that started "Invalid LV in > extent map". I now see that message when I do lvscan or pvscan as well. > > This looks very bad, and seems to be the same situation as described here: > http://weblog.pell.portland.or.us/~orc/2008/02/20/000/index.html > > Despite these warnings, I *seem* to be able to use my volumes. However, I > have stopped doing anything on the system to try to prevent corruption. > > First, is it safe to continue to use the system? > > Second, what can I do to diagnose or recover? > > I'm running a stock Debian 2.6.24 kernel with a single SCSI disk. Some of > its partitions are dedicated to an LVM group, out of which most of my > partitions are carved. The LVM groups were originally created under EVMS > with a 2.4 kernel. I converted them to straight LVM months ago. > Following some suggestions in the archive, I used vgcfgrestore -M1 with the last metadata before the backup, and things seem to be back. At least lvscan runs with out errors. So, 2 new questions: 1) are my data OK? (I'm also curious about what state the system was in before the recovery--was it safe to use?) 2) how can I take a snapshot without running into this problem? Thanks. Ross _______________________________________________ linux-lvm mailing list linux-lvm@redhat.com https://www.redhat.com/mailman/listinfo/linux-lvm read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/
