** Changed in: linux
       Status: New => Fix Released

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  zfs fails on remount when using bind mounts

Status in Linux:
  Fix Released
Status in linux package in Ubuntu:

Bug description:
  When using a ZFS filesystem, if it is mounted and the bind-mounted,
  and then the original mount is unmounted, the bind mount will still be
  able to access the zfs filesystem contents, and zfs refuses to mount
  the original mount point.

  This is upstream zfs bug 5796:

  Example repro steps (from upstream bug):

  zfs create tank/test
  zfs set mountpoint=/tank-test tank/test
  touch /tank-test/tank-test-file
  mount -B /tank-test /mnt
  zfs umount tank/test
  ls -al /tank-test/ (filesystem unmounted, file not found)
  ls -al /mnt (filesystem still referenced and file still found)
  zfs mount tank/test (will complain about dataset being mounted)

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