On Mon, Aug 04, 2003 at 10:08:15AM -0700, dean gaudet wrote: > is there an offline tool which can reconstruct such an array? or even an > offline tool which already has the parity calculation code and such which > i could extend to support such reconstruction? > > i considered copying the two bad disks with "dd conv=noerror,sync", which > would stop the kernel from marking the drives as bad, but that seems a bit > less than ideal because i really would like to reconstruct the bad stripes > using the 3 valid copies and not include an all-zeroes copy created by dd. dd_rescue sounds like your friend - it'll let you make raw backups of the partitions, but instead of quitting on errors, it'll keep going until it passes the bad areas. You'll probably need a few disks to use as dd_rescue targets, but once you have images of the needed partitions, rebuild should work fine (assuming of course, that you're correct in saying the errors never overlap). -- Ross Vandegrift ross@willow.seitz.com A Pope has a Water Cannon. It is a Water Cannon. He fires Holy-Water from it. It is a Holy-Water Cannon. He Blesses it. It is a Holy Holy-Water Cannon. He Blesses the Hell out of it. It is a Wholly Holy Holy-Water Cannon. He has it pierced. It is a Holey Wholly Holy Holy-Water Cannon. He makes it official. It is a Canon Holey Wholly Holy Holy-Water Cannon. Batman and Robin arrive. He shoots them. - To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
