Hi all, As I might've mentioned to a few of you at OLS, I've hacked up a quick and dirty program to study the effects of what happens to a filesystem when certain blocks mutate underneath it (think malice, your RAID5 controller goes berserk, etc). Said program is now posted in a crude form here: http://sweaglesw.net/~djwong/programs/fs_mutate/ I've run this program against ext3 and reiserfs; so far, ext3 seems to be the stability winner, as it tends to stay up the longest (about 30-35 minutes) even with destroy mode turned on. reiserfs lasts a few minutes under such a beating. Of course, "stays up" is a long way from "works properly" -- overwriting things like indirect blocks has the rather amusing effect of generating lots of messages about falling off the end of a drive. As with the folks who used carefully crafted ISO9660 filesystems to crash arbitrary machines demonstrated last year, it's not so hard to get Linux to automount filesystems. To my knowledge, nobody's tried a similar thing against the other filesystems, though I could just be ignorant. What do you think? Useful tool? Or am I the one being the tool? ;) --D - To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
