On Sat, 4 Jul 2015, Justin Stephenson wrote:
[root@BigBlue Desktop]# mdadm --assemble --scan --force
[root@BigBlue Desktop]# cat /proc/mdstat
Personalities : [raid6] [raid5] [raid4]
md0 : inactive sdf1[8](S) sde1[2] sdg1[4] sdd1[1] sdh1[7] sdc1[0] sdb1[6]
20510934584 blocks super 1.2
[root@BigBlue Desktop]# mdadm --assemble --force /dev/md0
/dev/sd{b,c,d,e,g,h}1
mdadm: /dev/sdb1 is busy - skipping
mdadm: /dev/sdc1 is busy - skipping
mdadm: /dev/sdd1 is busy - skipping
mdadm: /dev/sde1 is busy - skipping
mdadm: /dev/sdg1 is busy - skipping
mdadm: /dev/sdh1 is busy - skipping
You can't do assemble on an already running array, so this did nothing.
[root@BigBlue Desktop]# mdadm --stop /dev/md0
mdadm: stopped /dev/md0
[root@BigBlue Desktop]# mdadm --assemble --force /dev/md0
/dev/sd{b,c,d,e,g,h}1mdadm: Marking array /dev/md0 as 'clean'
mdadm: /dev/md0 has been started with 6 drives (out of 7).
So this did the trick because the --assemble --force above failed because
you tried to do it on an already assembled array.
[root@BigBlue Desktop]# mdadm --manage /dev/md0 --add /dev/sdf1
mdadm: added /dev/sdf1
[root@BigBlue Desktop]# cat /proc/mdstat
Personalities : [raid6] [raid5] [raid4]
md0 : active raid6 sdf1[8] sdc1[0] sdb1[6] sdh1[7] sdg1[4] sde1[2] sdd1[1]
14650666880 blocks super 1.2 level 6, 128k chunk, algorithm 2 [7/6]
[UUU_UUU]
[>....................] recovery = 0.0% (2017024/2930133376)
finish=725.8min speed=67234K/sec
Great!
--
Mikael Abrahamsson email: swmike@xxxxxxxxx
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