On Tue, Aug 21, 2012 at 9:46 PM, Ross Boylan <r...@biostat.ucsf.edu> wrote: > > I setup a chroot on a snapshot. Part of the setup was > mount --rbind /dev /mnt/chrtest/dev > > I have exited the chroot and, I believe, ended the processes I started. > umount /mnt/chrtest/dev > gives umount: /mnt/chrtest/dev: device is busy > > How can I get this to work? > > After reviewing the output of mount I umounted the mounts below /dev, > which seems to be the main advice on the net for undoing rbinds. > > The net also mentions using lsof to see what is accessing the file > system. lsof isn't much help because it shows everything that is > touching /dev (I presume--it's a long list), and I can't shut all that > down without a reboot. > > My ultimate goal is to destroy the snapshot, but neither lvremove nor > lvchange -an work with the volume "in use".
Since you used "rbind", you must also have mounted submounts/subdirectories of "/dev" like "its" and "shm". Try umount-ing "/dev" with "-l" or umount-ing all three. -- To UNSUBSCRIBE, email to debian-user-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org Archive: http://lists.debian.org/CAOdo=sx+nr4neonxphzenvrz4pnfwpqpvtuelu2j+-wibll...@mail.gmail.com
