Nigel J. Terry wrote:
Neil Brown wrote:
On Saturday June 17, nigel@xxxxxxxxxxxxxx wrote:
Any ideas what I should do next? Thanks
Looks like you've probably hit a bug. I'll need a bit more info
though.
First:
[root@homepc ~]# cat /proc/mdstat
Personalities : [raid5] [raid4]
md0 : active raid5 sdb1[1] sda1[0] hdc1[4](S) hdb1[2]
490223104 blocks super 0.91 level 5, 128k chunk, algorithm 2
[4/3] [UUU_]
[=>...................] reshape = 6.9% (17073280/245111552)
finish=86.3min speed=44003K/sec
unused devices: <none>
This really makes it look like the reshape is progressing. How
long after the reboot was this taken? How long after hdc1 has hot
added (roughly)? What does it show now?
What happens if you remove hdc1 again? Does the reshape keep going?
What I would expect to happen in this case is that the array reshapes
into a degraded array, then the missing disk is recovered onto hdc1.
NeilBrown
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I don't know how long the system was reshaping before the power went
off, and then I had to restart when the power came back. It claimed it
was going to take 430 minutes, so 6% would be about 25 minutes, which
could make good sense, certainly it looked like it was working fine
when I went out.
Now nothing is happening, it shows:
[root@homepc ~]# cat /proc/mdstat
Personalities : [raid5] [raid4]
md0 : active raid5 sdb1[1] sda1[0] hdc1[4](S) hdb1[2]
490223104 blocks super 0.91 level 5, 128k chunk, algorithm 2
[4/3] [UUU_]
[=>...................] reshape = 6.9% (17073280/245111552)
finish=2281.2min speed=1665K/sec
unused devices: <none>
[root@homepc ~]#
so the only thing changing is the time till finish.
I'll try removing and adding /dev/hdc1 again. Will it make any
difference if the device is mounted or not?
Nigel
Tried remove and add, made no difference:
[root@homepc ~]# mdadm /dev/md0 --remove /dev/hdc1
mdadm: hot removed /dev/hdc1
[root@homepc ~]# cat /proc/mdstat
Personalities : [raid5] [raid4]
md0 : active raid5 sdb1[1] sda1[0] hdb1[2]
490223104 blocks super 0.91 level 5, 128k chunk, algorithm 2 [4/3]
[UUU_]
[=>...................] reshape = 6.9% (17073280/245111552)
finish=2321.5min speed=1636K/sec
unused devices: <none>
[root@homepc ~]# mdadm /dev/md0 --add /dev/hdc1
mdadm: re-added /dev/hdc1
[root@homepc ~]# cat /proc/mdstat
Personalities : [raid5] [raid4]
md0 : active raid5 hdc1[4](S) sdb1[1] sda1[0] hdb1[2]
490223104 blocks super 0.91 level 5, 128k chunk, algorithm 2 [4/3]
[UUU_]
[=>...................] reshape = 6.9% (17073280/245111552)
finish=2329.3min speed=1630K/sec
unused devices: <none>
[root@homepc ~]#
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