On 20/07/16 16:07, Roman Mamedov wrote: > On Wed, 20 Jul 2016 15:31:09 +0100 Wols Lists > <antlists@xxxxxxxxxxxxxxx> wrote: > >> backing up and replacing the barracudas > > Yeah especially the sdb and sdf ones, which are failing HARD right > now. > > 5 Reallocated_Sector_Ct 0x0033 095 095 036 Pre-fail > Always - 7808 197 Current_Pending_Sector 0x0012 080 > 080 000 Old_age Always - 3359 198 > Offline_Uncorrectable 0x0010 080 080 000 Old_age Offline > - 3359 > > 5 Reallocated_Sector_Ct 0x0033 072 051 036 Pre-fail > Always - 37616 187 Reported_Uncorrect 0x0032 001 > 001 000 Old_age Always - 587 197 > Current_Pending_Sector 0x0012 001 001 000 Old_age Always > - 33664 198 Offline_Uncorrectable 0x0010 001 001 000 > Old_age Offline - 33664 > OUCH! Okay, and I don't like recommending stuff because I'm not an expert, but you have 6 x 1TB drives, raid-10. Does that give you 1.5TB of usable space, or 3TB? Never mind. I'm going to recommend getting 4 x 3TB drives at about £100 each - not nice. But you only need one to start with. Get that first 3TB drive. NOW. Physically replace sda in the machine, and configure it as a single-drive mirror ( --create --devices=2 sda spare). Boot your system, run that timeout script, and try to assemble your array with --scan --assemble --force. That SHOULD be safe. Read up and make certain - I accept no responsibility for your data ... If that works, you can now mount your array(s). READ ONLY. Now copy your data across to the new drive - use something like rsync or cp and keep a log - there's a high probability you'll get read errors, and you don't want this to crash the copy and leave it only partly complete, and you also want to know what failed. You can now bring the system up on the new drive. DUMP THE BARRACUDAS - ALL OF THEM. Two are failing, and the third one is probably no better - it's not worth risking your data. The constellations are probably okay as backup drives - it's a couple of quid for an enclosure to turn them into usb drives :-) As soon as you can, get the other three 3TB drives. The first of these is urgent - your system will be running on a degraded mirror and you need to fix that asap. The second drive will convert your mirror to raid5, and the last one will convert it to raid6. NB - I can't remember - is your boot/system partition on these drives? You're better off running that as a mirror regardless, so if so, split the 3TB drives into a small boot/system partition and a large data partition, raid6 the data as you get the drives, and raid1 the boot/system across all four drives (install grub on all four, too). Cheers, Wol -- 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
