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Subjectloop device broken in 2.4.6-pre5
File backed loop device on 4k block size ext2 filesystem:

debian:/root # dd if=/dev/zero of=file1 bs=1024 count=10
10+0 records in
10+0 records out
debian:/root # losetup /dev/loop0 file1
debian:/root # dd if=/dev/zero of=/dev/loop0 bs=1024 count=10 conv=notrunc
dd: /dev/loop0: No space left on device <=====ERROR=====
9+0 records in
8+0 records out
debian:/root # tune2fs -l /dev/hda1 2>&1| grep "Block size"
Block size: 4096
debian:/root # uname -a
Linux debian 2.4.6-pre5 #1 Thu Jun 21 14:27:25 EEST 2001 i686 unknown

Stock 2.4.5 and 2.4.5-ac15 don't have this problem.

Jari Ruusu <>
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