Sylvain, I would recommend that you buy a replacement disk for the one throwing errors and then run dd_rescue to copy as much data from the dying disk to the replacement. Then, and only then, do you try to reassemble the array with the --force option. That disk is dying, and dying quickly. Can you also post the output of mdadm -E /dev/sd[bcde]1 for each disk, even the dying one, so we can look at the counts and give you some more advice. Also, the output of the mdadm --assemble --force /dev/md2 /dev/sd[bcde]1 would also be good. The more info the better. Good luck! John sylvain> i'm sorry to ask this questions but the raid 5 with 4 disk is sylvain> in big trouble during re-assemble. 2 disks are out of order. sylvain> I have change a disk of the raid 5 (sde) to growing the raid. sylvain> But a second disk (sdc) have too many bad sector during the sylvain> re-assemble, and shutdown the re-assemble. "mdadm --assemble sylvain> --force /dev/md2 /dev/sd[bcde]1" I have try to correct bad sylvain> sectors with badblocks, but it's finished by no more spare sylvain> sectors and the disk still have some bad sector. badblocks sylvain> -b 512 -o badblocks-sdc.txt -v -n /dev/sdc 1140170000 sylvain> 1140169336 1140169400 1140169401 1140169402 1140169403 sylvain> 1140169404 1140169405 1140169406 1140169407 1140169416 sylvain> 1140169417 1140169418 1140169419 1140169420 1140169421 sylvain> 1140169422 1140169423 sylvain> For information the mdadm examine return : cat mdadm-exam.txt sylvain> /dev/sdb: MBR Magic : aa55 Partition[0] : 1953523120 sectors sylvain> at 2048 (type fd) /dev/sdc: MBR Magic : aa55 Partition[0] : sylvain> 1953520002 sectors at 63 (type fd) /dev/sdd: MBR Magic : aa55 sylvain> Partition[0] : 1953520002 sectors at 63 (type fd) /dev/sde: sylvain> MBR Magic : aa55 Partition[0] : 4294965247 sectors at 2048 sylvain> (type fd) sylvain> I have 2 way to solve the issue. The first, is to have sylvain> special command to pass bad sector during re-assemble as sylvain> "mdadm --assemble --force /dev/md2 /dev/sd[bcde]1" The second sylvain> is change the disk sde with the old good one, but some datas sylvain> have been changed on the raid since i have remove it. But sylvain> these datas are not important. It's only logs and history sylvain> activity. sylvain> What can i do to recover a maximum datas without too many sylvain> risk? sylvain> Thank's in advance Best Regards sylvain> ---------------------------------- Sylvain Depuille (in sylvain> trouble) sylvain> sylvain.depuille@xxxxxxxxxxx -- To unsubscribe from this sylvain> list: send the line "unsubscribe linux-raid" in the body of a sylvain> message to majordomo@xxxxxxxxxxxxxxx More majordomo info at sylvain> http://vger.kernel.org/majordomo-info.html -- 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
