bin/115174: [patch] growfs(8) needs zero-writing for safe filesystem expansion

[gavin at FreeBSD.org]

Synopsis: [patch] growfs(8) needs zero-writing for safe filesystem expansion

Responsible-Changed-From-To: freebsd-bugs->gavin
Responsible-Changed-By: gavin
Responsible-Changed-When: Fri Jan 1 21:30:09 UTC 2010
Responsible-Changed-Why: 
Take.  The UFS2 bug was fixed in r197763, the UFS1 bug can still be recreated on
HEAD with:

mdconfig -a -t swap -s 1G
dd if=/dev/random of=/dev/md0 bs=1048576
newfs -s 30000 -O 1 /dev/md0
mount /dev/md0 /mnt
cp -r /usr/src/sys /mnt
umount /mnt
fsck -t ufs /dev/md0
growfs /dev/md0
fsck -t ufs /dev/md0


http://www.freebsd.org/cgi/query-pr.cgi?pr=115174