On 11/25/2015 07:12 AM, Semyon Enskiy wrote: > Hi Phil. > > Thanks for your suggestions, I have followed them, but RAID5 at md3 not > recovered at yet, maybe you will find time to suggest anything else. > > Exactly, power and data connections of SATA disks was not reliable, fixed > this and after boot get no errors in kernel logs. > md3 was replaced with "<ingore>" in mdadm.conf and commented in fstab before > poweroff, things returned back after boot. > > # mdadm --assemble --update=revert-reshape /dev/md3 This ^^^ is a mistake. It did nothing because you didn't list all of the component partitions. Stop md3 and try this part again. If it still doesn't work, add --force. > # mdadm --assemble --scan -vv > Note the difference in --display and --examine outputs (see below) about > total and delta device numbers, 10 in detail and 11 in examine. --display is pretty much useless on an inactive array. The --examine reports are the ones that matter. > Also note, that sda3 is marked as "spare" device, I am wrote before in first > message, that some useless commands was executed. This is from the --add operation you should not have done. > # mdadm --add /dev/md3 --re-add /dev/sda3 Augh! Don't guess at what to do! And even if the right thing, the syntax is wrong (never put --add and --re-add together). > mdadm: Cannot get array info for /dev/md3 > # This is because array is not started? Yes. [trim /] > # mdadm --examine /dev/sd?3 [trim /] Very good, you have device roles 0-7 & 9, plus one spare, matching the array state. Put these devices in the --assemble --update command. > # for x in /dev/sd[a-z] ; do echo $x ; smartctl -i -A $x ; done [trim /] Your drives are entirely healthy. No apparent lasting effects from the problem cables/power. For reference, your drive name to serial numbers to roles: /dev/sda3 ==> WD-WCC4E1657399 ==> spare /dev/sdb3 ==> WD-WCC4E1643332 ==> role 6 /dev/sdc3 ==> WD-WCC4E1649141 ==> role 7 /dev/sdd3 ==> WD-WCC4E0340253 ==> role 4 /dev/sde3 ==> WD-WCC4E1658818 ==> role 5 /dev/sdf3 ==> WD-WCC4E1349511 ==> role 0 /dev/sdg3 ==> WD-WCC4E1265787 ==> role 3 /dev/sdh3 ==> WD-WCC4E1639809 ==> role 2 /dev/sdi3 ==> WD-WCC4E1639009 ==> role 1 /dev/sdj3 ==> WD-WCC4E1228884 ==> role 9 Your next operations are: mdadm --stop /dev/md3 mdadm -v --assemble --update=revert-reshape /dev/md3 /dev/sd[a-i]3 If successful, it should begin rebuilding onto /dev/sda3 (role 8). If the above fails, repeat with --force. If that fails show the output and do nothing else. Phil -- 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
