[Bug 1279660] Re: luks+lvm+btrfs raid1 confuses linux

[mhosken]

In keeping with a similar bug #890779, I am assuming this is a
udisks/udev issue. But the encryption aspect and the inability for it to
take down the lvm to release the encryption may be from somewhere else.

** Package changed: ubuntu => udisks (Ubuntu)

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Title:
  luks+lvm+btrfs raid1 confuses linux

Status in “udisks” package in Ubuntu:
  New

Bug description:
  I created a luks encrypted partition on an external drive, and put lvm
  with a single group and two volumes into the partition. I then used
  mkfs.btrfs to create a raid1 (-d raid1 -m raid1) mirror of the two lvm
  volume devices. After rebooting (yes, it's that bad) and plugging in
  the external drive again, two drives appear on the list of available
  drives, even though they are a raid pair. If you click on one then it
  mounts OK. If you click the other or click to mount again the mounter
  will mount the device again in another directory of /media.

  If I then unmount those manually I can't stop the drive using disks or
  lock the encrypted partition (this probably being the cause of the
  other). If I give up and unplug, then the two block devices for the
  lvm volumes remains and I can't replug later without a reboot.

  I raise this bug since I can imagine that down the line, this could
  become a common use case if btrfs isn't going to support direct
  encryption for those wanting self healing, encrypted, compressed,
  browsable backups.

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