Description of Problem: Under /mnt/other there were mounted various partitions from /dev/hdg for a while and various copy operations from them to another disk were performed. Nothing was written _to_ that disk (this includes delete operations). Currently all of these partitions mounted below /mnt/other got unmounted and we see the following (/etc/mtab has the same info on mounts): # cat /proc/mounts | grep hdg /dev/hdg1 /mnt/other ext2 rw 0 0 # umount /mnt/other umount: /mnt/other: device is busy # lsof /mnt/other/ # umount -f /mnt/other umount2: Device or resource busy umount: /dev/hdg1: not mounted umount: /mnt/other: Illegal seek # umount -f /dev/hdg1 umount2: Device or resource busy umount: /dev/hdg1: not mounted umount: /mnt/other: Illegal seek # umount -v -f /dev/hdg1 umount2: Device or resource busy could not umount /mnt/other - trying /dev/hdg1 instead umount: /dev/hdg1: not mounted umount: /mnt/other: Illegal seek # The above even after _all_ logins were closed and root logged once again. 'strace' does not give much more and shows only EBUSY error return from 'umount' or 'oldumount' calls. Yes, I was trying to be a bit more "inventive" with lsof than in the above demo. Nothing was showing up. Version-Release number of selected component (if applicable): kernel-2.4.9-13, glibc-2.2.4-19.3 and util-linux-2.11f-17 How Reproducible: Hard to tell. It does seem to depend on preceding activities.
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