Shamsul Kamal
asked on
How to start broken Linux Software RAID ?
Hi,
May i know how to start broken linux software raid ?
I have the following :
[root@vps-svr1 ~]# cat /proc/mdstat
Personalities : [raid1]
md0 : active raid1 sdb1[1] sda1[0]
200704 blocks [2/2] [UU]
md1 : active raid1 sdb3[1] sda3[0]
2048192 blocks [2/2] [UU]
md3 : active raid1 sdb5[1]
473845056 blocks [2/1] [_U]
md2 : active raid1 sdb2[1] sda2[2](F)
12289600 blocks [2/1] [_U]
unused devices: <none>
[root@vps-svr1 ~]#
I have tried the following but no luck ?
[root@vps-svr1 ~]# mdadm --manage /dev/md3 --fail /dev/sdb5
mdadm: set /dev/sdb5 faulty in /dev/md3
[root@vps-svr1 ~]#
[root@vps-svr1 ~]# mdadm --manage /dev/md3 --remove /dev/sdb5
mdadm: hot remove failed for /dev/sdb5: Device or resource busy
[root@vps-svr1 ~]#
[root@vps-svr1 ~]# mdadm --manage --stop /dev/md3
mdadm: fail to stop array /dev/md3: Device or resource busy
[root@vps-svr1 ~]#
[root@vps-svr1 ~]# mdadm --add /dev/md3 /dev/sdb5
mdadm: Cannot open /dev/sdb5: Device or resource busy
[root@vps-svr1 ~]
Appreciates if anybody can provide a step by step on how to update/start the raid.
Thank you.
May i know how to start broken linux software raid ?
I have the following :
[root@vps-svr1 ~]# cat /proc/mdstat
Personalities : [raid1]
md0 : active raid1 sdb1[1] sda1[0]
200704 blocks [2/2] [UU]
md1 : active raid1 sdb3[1] sda3[0]
2048192 blocks [2/2] [UU]
md3 : active raid1 sdb5[1]
473845056 blocks [2/1] [_U]
md2 : active raid1 sdb2[1] sda2[2](F)
12289600 blocks [2/1] [_U]
unused devices: <none>
[root@vps-svr1 ~]#
I have tried the following but no luck ?
[root@vps-svr1 ~]# mdadm --manage /dev/md3 --fail /dev/sdb5
mdadm: set /dev/sdb5 faulty in /dev/md3
[root@vps-svr1 ~]#
[root@vps-svr1 ~]# mdadm --manage /dev/md3 --remove /dev/sdb5
mdadm: hot remove failed for /dev/sdb5: Device or resource busy
[root@vps-svr1 ~]#
[root@vps-svr1 ~]# mdadm --manage --stop /dev/md3
mdadm: fail to stop array /dev/md3: Device or resource busy
[root@vps-svr1 ~]#
[root@vps-svr1 ~]# mdadm --add /dev/md3 /dev/sdb5
mdadm: Cannot open /dev/sdb5: Device or resource busy
[root@vps-svr1 ~]
Appreciates if anybody can provide a step by step on how to update/start the raid.
Thank you.
ASKER CERTIFIED SOLUTION
membership
This solution is only available to members.
To access this solution, you must be a member of Experts Exchange.
"mdadm: Cannot open /dev/sdb5: Device or resource busy"
Same error I was getting for a bit...
Hmm what do you get when you type:
# mdadm --detail /dev/md3
Same error I was getting for a bit...
Hmm what do you get when you type:
# mdadm --detail /dev/md3
ASKER
Hi,
I managed to rebuild using "mdadm --manage /dev/md3 --add /dev/sda5"
It seems the active raid was sdb5 , i gues that is why the first command did't work.
I managed to rebuild using "mdadm --manage /dev/md3 --add /dev/sda5"
It seems the active raid was sdb5 , i gues that is why the first command did't work.
Ahh... Well, glad to hear its back up.
ASKER
Thanks....
ASKER
I've tried that but no luck, the following is the result :
[root@vps-svr1 ~]# mdadm --manage --run /dev/md3 /dev/sdb5
mdadm: internal error - devmode[/dev/sdb5]=0
[root@vps-svr1 ~]# mdadm --manage /dev/md3 --add /dev/sdb5
mdadm: Cannot open /dev/sdb5: Device or resource busy
[root@vps-svr1 ~]#