Subject: problems in a full ffs file system
To: 'tech-kern@NetBSD.org' <tech-kern@NetBSD.org>
From: Peter Jordan <email@example.com>
Date: 02/16/2007 13:27:59
we have a Problem in NetBSD 3.0 and ffs filesystem.
If we fill as a root user a ffs file system until no space is available, we
get corrupted files.
/home: write failed, file system is full
/dev/wd0g 970M 970M -48M 105% /home
After that, the root user is able to create files like:
echo 'aaaaaaaaa' > ffs_test
this file (ffs_test) is ok.
After making this file bigger with:
cat ffs_test >> ffs_test
this file (ffs_test) is corrupt.
This error occurs if we mounted this filesystem in softdep-mode and
default-mode. With mounting this filesystem in synchronous mode, this error
DOES NOT occur. Also by filling the filesystem as a non root user, who is
not able to write more then 100 %, the error DOES NOT occur.
On other systems we get even coredumps after panic and some other problems
occured (e.g. binaries die not start anymore).
Seems to be a bigger bug?!