[Bug 1007677] [NEW] overlayfs: on-boot, mount device issue.

[Mike Mestnik]

Public bug reported:

Hello example fstab entries I've tested,

overlayfs /usr overlayfs defaults,lowerdir=/.usr-ro/local/..,upperdir=/.usr-rw/lost+found/.. 0 2
none /usr overlayfs defaults,lowerdir=/.usr-ro/local/..,upperdir=/.usr-rw/lost+found/.. 0 2

On boot I get an error about the device overlayfs/none, so I'm prompted
to enter maintenance mode.  I issue a "mount -a; exit;" and all is well
the boot success.

I'm sick of doing this.

Here is a small script I wrote to resquash /usr, it's incomplete as I'm
not sure how to size the lv.

#!/bin/sh
mksquashfs /usr /root/usr.sqfs -comp lzo -no-exports -always-use-fragments -wildcards -e local/*&
kpid=$!

(
#unsquashfs -s usr.sqfs
#lvcreate -L 5G Arcadia -n nuusr$$.ro
cryptsetup -q luksFormat /dev/Arcadia/nuusr$$.ro /etc/keys/key.txt
newo=$(cryptsetup luksUUID /dev/Arcadia/nuusr$$.ro)
cryptsetup luksOpen /dev/Arcadia/nuusr$$.ro $newo --key-file /etc/keys/key.txt
wait $kpid
{ dd if=/root/usr.sqfs bs=4k; cat /dev/urandom; } | dd bs=4M of=/dev/mapper/$newo
cryptsetup luksClose $newo
) &
opid=$!

lvcreate -L 8G Arcadia -n nuusr$$.rw
cryptsetup -q luksFormat /dev/Arcadia/nuusr$$.rw /etc/keys/key.txt
neww=$(cryptsetup luksUUID /dev/Arcadia/nuusr$$.rw)
cryptsetup luksOpen /dev/Arcadia/nuusr$$.rw $neww --key-file /etc/keys/key.txt
mkfs.ext4 /dev/mapper/$neww
tune2fs -e remount-ro -o journal_data_writeback,discard /dev/mapper/$neww
cryptsetup luksClose $neww

wait $opid
newo=$(cryptsetup luksUUID /dev/Arcadia/nuusr$$.ro)
oldo=$(grep fsUsr.ro /etc/crypttab | grep -o ........-....-....-....-............)
oldw=$(grep fsUsr.rw /etc/crypttab | grep -o ........-....-....-....-............)
sed -i -e "s/$oldo/$newo/" -e "s/$oldw/$neww/" /etc/crypttab

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: mount 2.20.1-1ubuntu3 [modified: bin/findmnt bin/mount bin/umount sbin/losetup sbin/swapon]
ProcVersionSignature: Ubuntu 3.2.0-23.31-lowlatency-pae 3.2.14
Uname: Linux 3.2.0-23-lowlatency-pae i686
ApportVersion: 2.0.1-0ubuntu5
Architecture: i386
Date: Fri Jun  1 19:28:18 2012
SourcePackage: util-linux
UpgradeStatus: Upgraded to precise on 2012-01-03 (150 days ago)

** Affects: util-linux (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: apport-bug i386 precise

-- 
You received this bug notification because you are a member of Ubuntu
Foundations Bugs, which is subscribed to util-linux in Ubuntu.
https://bugs.launchpad.net/bugs/1007677

Title:
  overlayfs: on-boot, mount device issue.

Status in “util-linux” package in Ubuntu:
  New

Bug description:
  Hello example fstab entries I've tested,

  overlayfs /usr overlayfs defaults,lowerdir=/.usr-ro/local/..,upperdir=/.usr-rw/lost+found/.. 0 2
  none /usr overlayfs defaults,lowerdir=/.usr-ro/local/..,upperdir=/.usr-rw/lost+found/.. 0 2

  On boot I get an error about the device overlayfs/none, so I'm
  prompted to enter maintenance mode.  I issue a "mount -a; exit;" and
  all is well the boot success.

  I'm sick of doing this.

  Here is a small script I wrote to resquash /usr, it's incomplete as
  I'm not sure how to size the lv.

  #!/bin/sh
  mksquashfs /usr /root/usr.sqfs -comp lzo -no-exports -always-use-fragments -wildcards -e local/*&
  kpid=$!

  (
  #unsquashfs -s usr.sqfs
  #lvcreate -L 5G Arcadia -n nuusr$$.ro
  cryptsetup -q luksFormat /dev/Arcadia/nuusr$$.ro /etc/keys/key.txt
  newo=$(cryptsetup luksUUID /dev/Arcadia/nuusr$$.ro)
  cryptsetup luksOpen /dev/Arcadia/nuusr$$.ro $newo --key-file /etc/keys/key.txt
  wait $kpid
  { dd if=/root/usr.sqfs bs=4k; cat /dev/urandom; } | dd bs=4M of=/dev/mapper/$newo
  cryptsetup luksClose $newo
  ) &
  opid=$!

  lvcreate -L 8G Arcadia -n nuusr$$.rw
  cryptsetup -q luksFormat /dev/Arcadia/nuusr$$.rw /etc/keys/key.txt
  neww=$(cryptsetup luksUUID /dev/Arcadia/nuusr$$.rw)
  cryptsetup luksOpen /dev/Arcadia/nuusr$$.rw $neww --key-file /etc/keys/key.txt
  mkfs.ext4 /dev/mapper/$neww
  tune2fs -e remount-ro -o journal_data_writeback,discard /dev/mapper/$neww
  cryptsetup luksClose $neww

  wait $opid
  newo=$(cryptsetup luksUUID /dev/Arcadia/nuusr$$.ro)
  oldo=$(grep fsUsr.ro /etc/crypttab | grep -o ........-....-....-....-............)
  oldw=$(grep fsUsr.rw /etc/crypttab | grep -o ........-....-....-....-............)
  sed -i -e "s/$oldo/$newo/" -e "s/$oldw/$neww/" /etc/crypttab

  ProblemType: Bug
  DistroRelease: Ubuntu 12.04
  Package: mount 2.20.1-1ubuntu3 [modified: bin/findmnt bin/mount bin/umount sbin/losetup sbin/swapon]
  ProcVersionSignature: Ubuntu 3.2.0-23.31-lowlatency-pae 3.2.14
  Uname: Linux 3.2.0-23-lowlatency-pae i686
  ApportVersion: 2.0.1-0ubuntu5
  Architecture: i386
  Date: Fri Jun  1 19:28:18 2012
  SourcePackage: util-linux
  UpgradeStatus: Upgraded to precise on 2012-01-03 (150 days ago)

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/util-linux/+bug/1007677/+subscriptions