Am 07.09.2012 um 06:41 schrieb Adam Goryachev: > I have a MD raid6 with 5 drives, and every now and then one (random) > drive will fail. I've done all sorts of checks, and the drive is > actually working fine, so I suspect an issue with the Linux driver > and/or SATA controller (onboard). > > It isn't really relevant to the question, but I'll run through the sata > stuff, in case anyone can point out a simple solution to stop this from > happening (yes, a new server is on the way, but with budgets etc, that > could be some time away. This issue has happened for years, but we are > becoming more active with these failures now). > > 00:0e.0 IDE interface: nVidia Corporation MCP51 Serial ATA Controller > (rev a1) > 00:0f.0 IDE interface: nVidia Corporation MCP51 Serial ATA Controller > (rev a1) > 01:07.0 RAID bus controller: Silicon Image, Inc. Adaptec AAR-1210SA SATA > HostRAID Controller (rev 02) > > cat /proc/mdstat > Personalities : [raid1] [raid6] [raid5] [raid4] > md2 : active raid6 sdh1[5] sdg1[4] sdf1[0] sdd1[6](F) sde1[2] sda1[1] > 5860535808 blocks level 6, 64k chunk, algorithm 2 [5/4] [UUU_U] > [>....................] recovery = 1.4% (28663240/1953511936) > finish=486.5min speed=65938K/sec > > > > Since I know sdh is actually almost up to date, is there some way to > re-add it, and only have to sync the portions of the disk which have > changed? Besides all the stuff about fix your server, a raid is not a backup and you risk your data - simply add a write intent bitmap: # mdadm /dev/md2 --grow bitmap=internal Best regards Ralf-- To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
