On Apr 11, 2007 15:17 -0500, Eric Sandeen wrote:
I was wondering if others think it would be useful to have a fill_bgs
command in debugfs; this would (minimally) mark the lower X bgs as full
for both inodes blocks (possibly either/or), to allow testing the
higher block groups. I'm using a hacked up version of this to do a
little ext3 testing above 8T. Given that this would really only be a
testing option in nature, would it be accepted into e2fsprogs? I'd
probably need some sort of unfill command as well, to put the bg
counters back where they should be; probably by actually reading the
bitmaps. This way fsck would still find a consistent filesystem...
I had originally written a set_bg_field function too, to go with inode
sb variants, though for marking the first few thousand bg's it was going
to get a bit tedious... :)
Try mke2fs -O lazy_bg XXX and be happy. Can be used on any kernel as
it is a COMPAT feature and marks all but first and last groups as full.
Cheers, Andreas
--
Andreas Dilger
Principal Software Engineer
Cluster File Systems, Inc.
-
To unsubscribe from this list: send the line unsubscribe linux-ext4 in
the body of a message to [EMAIL PROTECTED]
More majordomo info at http://vger.kernel.org/majordomo-info.html
