[ext2resize] Corruption after online-resizing

[Jan N. <ja...@go...>]

Hello!

I got reproducible corruptions while doing the following:

lvcreate -n test -L 100M vg1
mke2fs -b 1024 /dev/vg1/test
ext2prepare -v /dev/vg1/test 50G
mount /dev/vg1/test /mnt/test/

at the same time, do:

	cp -a /usr/src/linux /mnt/test/linux
	cp -a /mnt/test/linux /mnt/test/linux2
	cp -a /mnt/test/linux2 /mnt/test/linux3
	...

and
	e2fsadm -L+90M /dev/vg1/test
	e2fsadm -L+90M /dev/vg1/test
	... whenever necessary

The corrupted files contain blocks of other files or directory information
on 1024k boundaries.

Once I even got fs metadata corruptions, but data corruption seems to occur
more often (but that may be caused by the amount of data vs. metadata)

Kernel version is 2.4.0-test12-pre3 with current ext2-compat and online-ext2
patches.

Is this a known problem? I read on linux-kernel that there are some problems
with 1k blocksized filesystems, but I did test it with the same configuration
without resizing and got no corruptions.

Jan