[Bug 604909] Re: cryptsetup luksClose cannot close the device despite not being in use

Karl Maier 604909 at bugs.launchpad.net
Thu Nov 24 20:15:56 UTC 2011


*** This bug is a duplicate of bug 529502 ***
    https://bugs.launchpad.net/bugs/529502

It may be rather be a duplicate of Bug #484429

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https://bugs.launchpad.net/bugs/604909

Title:
  cryptsetup luksClose cannot close the device despite not being in use

Status in “cryptsetup” package in Ubuntu:
  Confirmed

Bug description:
  Binary package hint: cryptsetup

  I have a simple LUKS-encrypted volume, used for taking backups with a
  simple script:

  + cryptsetup luksOpen /dev/disk/by-id/usb-ST925031_5AS_5C75FFFFFFFF-0:0 iomegacrypt -d /root/keyfile
  Key slot 1 unlocked.
  + mount -t ext4 /dev/mapper/iomegacrypt /media/crypt
  + /usr/local/sbin/runbackup
  + umount /media/crypt
  + cryptsetup luksClose iomegacrypt
  Device iomegacrypt is busy.

  Nothing else uses the device apart from this backup script which is
  automated and happens shortly after I login. Prior to upgrading to
  Lucid there was no problem. The output of `lsof` does not show
  anything using the device.

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