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backen
2003 Nov 03
2
Ext3 filesystem modified while mounted read-only
I noticed that ext3 filesystems are modified if mounted read-only:
# mke2fs -j /dev/hdb1
[...]
# md5sum /dev/hdb1 > MD5SUM
# mount -t ext3 -o ro /dev/hdb1 /mnt/test1
# umount /mnt/test1
# md5sum -c MD5SUM
md5sum: MD5 check failed for '/dev/hdb1'
On examination of a block-for-block copy of 'before' and 'after' images
with od and diff, I believe that the changes are