From: bugzilla-daemon@bugzilla.kernel.org
Subject: [Bug 14354] Bad corruption with 2.6.32-rc1 and upwards
Date: Sat, 17 Oct 2009 02:27:11 GMT
Message-ID: <200910170227.n9H2RBMp015136@demeter.kernel.org>
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--- Comment #70 from Holger Freyther 2009-10-17 02:27:10 ---
I have no idea if that is useful for anyone. I have done the following.
0.) use dd to create a big file
1.) install a OpenSuSE 11.1 in it using kvm
2.) change the /etc/fstab and /sbin/init
2.1) /sbin/init is doing
mount /proc
fsck -f /dev/hda2
echo "press any key to continue"
mount -oremount,rw /
cd /source/linux-2.6
rm -rf *
rm -f .git/index.lock
git checkout .
make -j 6
make -j 6 modules_install
3.) Use kvm to start with the disk and an external kernel '-kernel ./bzImage
-append root=/dev/hda2"
4.) During the "make -j 6" I interrupt the kernel compile.
Result every ~10th time the filesystem is left with some errors (where you have
to Y/N for fsck) after the journal recovery. The errors are lost inodes (to be
attached to lost+found), zero length inodes and such.
The benefit of using the above setup:
- non karmic userspace (kvm still running on karmic though)
- no dm (disk image still hosted on a dm device)
- can copy/clone the disk image for each kernel run and use debugfs to look
at it.
I will post the next fsck log with errors and then I can upload it somewhere if
it is of any interest.
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