I didn't try to reproduce this but most likely it has nothing to do with boot partition. I had similar problem with mounting any ext4/external_journal partition after reboot because sd[a-z] mappings are not persistent. Therefore there is no guarantee that "sda" will be associated with the same device on next reboot. For example if you have two hard disks A known as "sda" and B known as "sdb" then after reboot you may have disk B mapped to "sda" and A bound to "sdb".
Also this problem is probably not specific to Debian in any way. It may help if you try to create external journal using /dev/by-id or /dev/by-path (I didn't verify if it work) or use another workaround mentioned in http://raid6.com.au/posts/fs_ext4_external_journal_caveats/ Regards, Dmitry Smirnov GPG key : 4096R/53968D1B -- To UNSUBSCRIBE, email to debian-devel-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org Archive: http://lists.debian.org/201304221433.10415.only...@member.fsf.org