[Bug 443980] Re: upstart hangs while starting cryptdisks

[Christoph]

Hi,
with my account I can't select 'wishlist', so I changed the status to 'fix released'.

The good news, now I know what happens and there is some fix for the
timing problem. If I get it correct, this occurs because there is a
dirty trick in libdevmapper. It seems, that in the first step /dev/dm-1
is created ant then moved to /dev/mapper/yourcryptdevicename. If you use
UUID=xyz in your /etc/fstab, mountall sees UUID=XYZ connected to
/dev/dm-1 and tries to fsck /dev/dm-1. Now fsck returns an error because
/dev/dm-1 doesen't exist anymore.

The (dirty) fix is to use /dev/mapper/yourcryptdevicename instead of
UUID=xyz in your /etc/fstab.

For the part with the two steps ('early' and 'init') I prefer actually
my own script in /usr/share/initramfs-tools/scripts/local-
bottom/<_usbkey>. Since this is part of the initrd.img it has some
advantages (dont forget to recreate your initrd.img, after creating or
changing this file). My script looks like:

#!/bin/sh

set -e

# Hook for mounting encrypted usb stic, change usbdev in ... and USBKEY to reflect your environment
 
for ask_passphrase in first second third last ; do

 for in  usb-0000_Removable_Drive_20112824060840760045-0:0-part5                 \
                usb-0000_Removable_Drive_20031424060835920030-0:0-part5 ; do

 if [ -L /dev/disk/by-id/$usbdev ]; then
  if [ -r /dev/mapper/USBKEY ]; then
   /sbin/blkid /dev/mapper/USBKEY && exit 0
   cryptsetup remove USBKEY
   echo "wrong passphrase $ask_passphrase try" 
  fi
  cryptsetup create USBKEY /dev/disk/by-id/$usbdev --readonly --tries 1
  sleep 0.2
 fi

 done
done


** Changed in: cryptsetup (Ubuntu)
       Status: New => Fix Committed

-- 
upstart hangs while starting cryptdisks
https://bugs.launchpad.net/bugs/443980
You received this bug notification because you are a member of Ubuntu
Bugs, which is subscribed to Ubuntu.

-- 
ubuntu-bugs mailing list
ubuntu-bugs at lists.ubuntu.com
https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs