>> However, back to --examine-badblocks. It seems it's reporting the same sector >> numbers in the list for several (up to eight) drives. If I understand this >> correctly, something strange has hit and damanged all drives on fixed sector >> numbers, such as this >> >> Bad-blocks on /dev/sdm: >> 436362944 for 128 sectors >> >> It doesn't seem very likely, to be honest, that a lot of drives suddenly damage >> the same sector at once. I can see the same occur on a friend's server - >> sectors with identical 'bad' sector numbers been listed on individual drives. > > It seems very likely the badblocks list is just replicated to new drives. I just > started > > # mdadm /dev/md0 --replace /dev/sdb --with /dev/sdk > > where sdk is a drive known to be good. It's about halfway through and it's > already copied part of the badblocks list. No I/O errors have been reported in > dmesg or otherwise. > > Any idea how to remove this list and start over? I just tried another approach, mdadm --remove on the spares, mdadm --examine on the removed spares, no superblock. Then madm --fail for one of the drives and mdadm --add for another, now spare for a few milliseconds until recovery started. This runs as it should, slower than --replace, but I don't care. After 12% or so, I checked with --examine-badblocks, and the same sectors are popping up again. This was just a small test to see i --replace was the "bad guy" here or if a full recovery would do the same. It does. Vennlig hilsen roy -- Roy Sigurd Karlsbakk (+47) 98013356 http://blogg.karlsbakk.net/ GPG Public key: http://karlsbakk.net/roysigurdkarlsbakk.pubkey.txt -- Hið góða skaltu í stein höggva, hið illa í snjó rita.
