In my Wheezy box I have two encrypted hard drive partitions, /dev/mapper/md07_crypt for /home and /dev/mapper/md05_crypt for /mnt. (Mnt is no longer used. That partition was originally for /tmp; in a weak moment I persuaded myself that I needed to encrypt /tmp. I have since changed the mount point for /tmp to tmpfs and consequently changed the mount point of /dev/mapper/md05_crypt to /mnt pending its deletion. In the meantime it still has to be opened.)
This morning, when I tried to boot this box, I found that the passwords for those two partitions were not accepted. Finally, after entering the correct passwords numerous times, the following messages were received.
[info] Loading kernel module loop.
[info] Loading kernel module coretemp.
[info] Loading kernel module it87.
[ok] Activating lvm and md swap ... Done
[....] Checking file systems ... Fsck from util-linux 2.20.1
BOOT was not cleanly unmounted, check forced.
BOOT: 245/120960 files (20.4% non-contiguous) 58505/241664 blocks
Fsck.ext4 No such file or directory while trying to open /dev/mapper/md07_crypt.
Possibly non-existent device?
VAR: recovering journal
Fsck died with exit status 9
Failed (code 9).
[FAIL] File system check failed. A log is being saved in /var/log/fsck/checkfs if that location is writable.
{My note: that location was not writable; so no such log was created.}
Please repair the system manually ... Failed!
[warn] A maintenance shell will now be started. CONTROL-D will terminate the shell and resume system boot ... (warning)
Give root password form maintenance
(or type CONTROL-D to continue):
After entering the root password the root bang appeared.
At this point I did not know what to do by way of reparing the system manually. I consequently closed the box, first by running "shutdown now". After various messages flashed by on the monitor I was asked once more to give the password for maintenance or type CONTROL-D again. After typing CONTROL-D again my user login appeared, but of course I could not log in. At that point I was finally able to close the computer with the Alt-S command.
I hope that somebody or bodies can tell me what to do to make this computer usable again -- short of having to do a completely new installation.