[Bug 433537] Re: aufs fstab entries require ordering logic

[Ringerl]

I'm still experiencing the problem that aufs is mounted before the
underlying mount is ready:

Snippet from mountall debug log (see full log in attachment)

update_mount: /var/lock: /var/lock none tmpfs nodev,noexec,nosuid,showthrough
update_mount: /media/aufs: /media/aufs none aufs br:/media/sdb1=rw,create=pmfs,cpup=bup check
update_mount: /media/sdb1: /media/sdb1 /dev/sdb1 ext4 errors=remount-ro check

/etc/fstab:

proc                                            /proc                   proc    nodev,noexec,nosuid                     0       0
UUID=5ba3227b-b091-4d55-915f-852bb93fd8fe       /                       ext4    errors=remount-ro                       0       1
UUID=ccc2ea9f-7228-4665-95d5-3240f7e5b373       none                    swap    sw                                      0       0
UUID="1b0761fa-6c7b-4e3c-b26a-73613850d029"     /media/sdb1             ext4    errors=remount-ro                       0       2
none                                            /media/aufs             aufs    br:/media/sdb1=rw,create=pmfs,cpup=bup  0       3


** Attachment added: "mountall-stdout"
   https://bugs.launchpad.net/ubuntu/+source/mountall/+bug/433537/+attachment/2170336/+files/mountall-stdout.log

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https://bugs.launchpad.net/bugs/433537

Title:
  aufs fstab entries require ordering logic

Status in “mountall” package in Ubuntu:
  Fix Released
Status in “mountall” source package in Karmic:
  Fix Released

Bug description:
  Binary package hint: mountall

  The manual page of fstab says: "The order of records in fstab is important because fsck(8), mount(8), and umount(8) sequentially iterate through fstab doing their thing."
  But if the contents of the /etc/fstab file are:
  /dev/sda2       /.snapshot/home         ext4    ro                                              0       0
  none            /.snapshot/home_ram     tmpfs   defaults                                        0       0
  none            /home                   aufs    br=/.snapshot/home_ram:/.snapshot/home=ro       0       0
  mountall mounts first the virtual file systems (tmpfs and aufs) and after that mounts the first one which is incorrect and leads to an undesired result.

  Bug found on package mountall (dpkg -l mountall -> version=0.1.6,
  mountall --version -> 0.1.0), on karmic alpha-6.

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