Current features:
Planned next: More levels
Please note: I test this utility extensively before releasing new versions. However, there are probably still bugs left, and the utility might well destroy your data. You should not use this on any system that contains important data.
How to use it:
#] mkraid --configfile /etc/raidtab /dev/md7 #] mke2fs /dev/md7 ... mount filesystem, put data on it ... #] raidstop /dev/md7 ... now create a new raidtab, with one disk added to /dev/md7 #] raidreconf /etc/raidtab /etc/raidtab.new /dev/md7 ... you should now be able to mount /dev/md7 again. ... you can also resize the filesystem with the resize2fs utility ... to actually grow your filesystem.
download at your very own risk.