md_import_device returned -16 raid1
From: Jim Radford <hidden>
Date: 2005-07-16 22:47:46
Greetings all:
Having a bit of difficulty with raid1, I built the array lastnight with two new drives, and it built fine but when I rebooted I get the following error when trying to start the array:
I'm running Mandrake 10.1 kernel 2.6.8.1-12mdk
[root@localhost jradford]# mdadm --version
mdadm - v1.7.0 - 11 August 2004
[root@bengali jradford]# mdadm -A -s
mdadm: failed to add /dev/hdc to /dev/md0: Device or resource busy
mdadm: /dev/md0 has been started with 1 drive (out of 2).
The following error message shows up in dmesg:
[root@bengali jradford]# dmesg | grep md:
md: md driver 0.90.0 MAX_MD_DEVS=256, MD_SB_DISKS=27
md: Autodetecting RAID arrays.
md: autorun ...
md: ... autorun DONE.
md: md0 stopped.
md: could not lock unknown-block(22,0).
md: md_import_device returned -16
md: bind<hdb>
my /proc/mdstat:
[root@bengali jradford]# cat /proc/mdstat
Personalities : [raid1]
md0 : active raid1 hdb[0]
195360896 blocks [2/1] [U_]
unused devices: <none>
Some drive specific information
[root@bengali jradford]# mdadm -E /dev/hdb
/dev/hdb:
Magic : a92b4efc
Version : 00.90.00
UUID : 9d09bd52:e44dc514:4e6b732f:5263e2f8
Creation Time : Fri Jul 15 21:16:18 2005
Raid Level : raid1
Device Size : 195360896 (186.31 GiB 200.05 GB)
Raid Devices : 2
Total Devices : 2
Preferred Minor : 0
Update Time : Sat Jul 16 07:33:32 2005
State : clean
Active Devices : 2
Working Devices : 2
Failed Devices : 0
Spare Devices : 0
Checksum : 5ca8741a - correct
Events : 0.326
Number Major Minor RaidDevice State
this 0 3 64 0 active sync /dev/hdb
0 0 3 64 0 active sync /dev/hdb
1 1 22 0 1 active sync /dev/hdc
[root@localhost jradford]# mdadm -E /dev/hdc
/dev/hdc:
Magic : a92b4efc
Version : 00.90.00
UUID : 9d09bd52:e44dc514:4e6b732f:5263e2f8
Creation Time : Fri Jul 15 21:16:18 2005
Raid Level : raid1
Device Size : 195360896 (186.31 GiB 200.05 GB)
Raid Devices : 2
Total Devices : 2
Preferred Minor : 0
Update Time : Sat Jul 16 07:33:32 2005
State : clean
Active Devices : 2
Working Devices : 2
Failed Devices : 0
Spare Devices : 0
Checksum : 5ca873ef - correct
Events : 0.326
Number Major Minor RaidDevice State
this 1 22 0 1 active sync /dev/hdc
0 0 3 64 0 active sync /dev/hdb
1 1 22 0 1 active sync /dev/hdc
And for the md status:
[root@bengali mdadm-2.0-devel-2]# mdadm -D /dev/md0
/dev/md0:
Version : 00.90.01
Creation Time : Fri Jul 15 21:16:18 2005
Raid Level : raid1
Array Size : 195360896 (186.31 GiB 200.05 GB)
Device Size : 195360896 (186.31 GiB 200.05 GB)
Raid Devices : 2
Total Devices : 1
Preferred Minor : 0
Persistence : Superblock is persistent
Update Time : Sat Jul 16 07:33:32 2005
State : clean, degraded
Active Devices : 1
Working Devices : 1
Failed Devices : 0
Spare Devices : 0
UUID : 9d09bd52:e44dc514:4e6b732f:5263e2f8
Events : 0.326
Number Major Minor RaidDevice State
0 3 64 0 active sync /dev/hdb
1 0 0 - removed
If I try and add hdc to the array With version 1.9.0 I get
mdadm: hot add failed for /dev/hdc: Invalid argument
but the same message in dmesg as above.
with 2.0devel2 I get:
mdadm: Cannot open /dev/hdc: Device or resource busy
But also the same message in dmesg as above
Any advice would be greatly appreciated.
Regards,
Jim
--
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Jim Radford [off-list ref]
http://www.jimradford.com/
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