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 majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
