Public bug reported:
If you crash your pendrive system, casper-rw can be corrupted.
casper should check using fsck before mounting casper-rw to
catch this and allow users to fix the problem if it cannot be fixed
automatically.
Here's a patch that I think will do the trick for the ext2/3/4 file-systems
at least. I coppied e2fsck.static to the ramdisk and put it in sbin.
greearb@v-ubuntu-12-04:/tmp/ramdisk/scripts$ diff -u ~/casper.orig casper
--- /home/greearb/casper.orig 2012-05-08 09:09:43.012658969 -0700
+++ casper 2012-05-08 10:43:20.016662223 -0700
@@ -441,6 +441,14 @@
fi
fi
+ if [ "_${cow_fstype}" = "_ext2" -o "_${cow_fstype}" = "_ext3" -o
"_${cow_fstype}" = "_ext4" ]
+ then
+ [ "$quiet" != "y" ] && log_warning_msg "Running e2fsck on ${cowdevice},
fstype: ${cow_fstype}"
+ e2fsck -p ${cowdevice} || panic "ERROR: File system corruption on
${cowdevice}. Run: e2fsck ${cowdevice}"
+ else
+ [ "$quiet" != "y" ] && log_warning_msg "Not running fsck on
${cowdevice}, only ext2/2/4 fsck supported: ${cow_fstype}"
+ fi
+
mount -t ${cow_fstype} -o ${cow_mountopt} ${cowdevice} /cow || panic "Can
not mount $cowdevice on /cow"
case ${UNIONFS} in
** Affects: casper (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/996668
Title:
Should run fsck before mounting casper-rw
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