Hi Hari!
> > [ About plugin check_md_raid.pl ]
> > I have noticed when removing a member from the raid, running the plugin
> > from Nagios server, it show the RAID in degraded state for a moment. But
> > soon the plugin shows the RAID in OK state. I observe the same situation
> > when adding the member. Initially the script show the RAID in rebuilding
> > state, but a new run of the plugin shows OK status before finishing the
> > ebuilding. Which can be the problem?
> show us the output of the plugin with -vvv as well as the mdadm detail
> output. This plugin basically calls mdadm to find the status of the
> drives.
Initial status:
xenhost7:/usr/local/nagios/libexec/non-std# cat /proc/mdstat
Personalities : [raid1]
md2 : active raid1 sda3[0] sdb3[1]
292053568 blocks [2/2] [UU]
md1 : active raid1 sdb2[1] sda2[0]
19534976 blocks [2/2] [UU]
md0 : active raid1 sda1[0] sdb1[1]
979840 blocks [2/2] [UU]
unused devices: <none>
xenhost7:/usr/local/nagios/libexec/non-std# ./check_md_raid.pl -vvv
finding all MD arrays via mdadm --detail --scan
found array /dev/md0
found array /dev/md1
found array /dev/md2
Now testing raid device "/dev/md0"
/dev/md0:
Version : 00.90.03
Creation Time : Thu Apr 10 17:46:04 2008
Raid Level : raid1
Array Size : 979840 (957.04 MiB 1003.36 MB)
Device Size : 979840 (957.04 MiB 1003.36 MB)
Raid Devices : 2
Total Devices : 2
Preferred Minor : 0
Persistence : Superblock is persistent
Update Time : Mon Apr 28 11:42:28 2008
State : clean
Active Devices : 2
Working Devices : 2
Failed Devices : 0
Spare Devices : 0
UUID : 956ff562:7ba15903:6068b800:4a673998
Events : 0.2
Number Major Minor RaidDevice State
0 8 1 0 active sync /dev/sda1
1 8 17 1 active sync /dev/sdb1
Now testing raid device "/dev/md1"
/dev/md1:
Version : 00.90.03
Creation Time : Thu Apr 10 17:46:15 2008
Raid Level : raid1
Array Size : 19534976 (18.63 GiB 20.00 GB)
Device Size : 19534976 (18.63 GiB 20.00 GB)
Raid Devices : 2
Total Devices : 2
Preferred Minor : 1
Persistence : Superblock is persistent
Update Time : Wed Apr 30 16:14:26 2008
State : clean
Active Devices : 2
Working Devices : 2
Failed Devices : 0
Spare Devices : 0
UUID : 119bcdde:0ac351b2:d05e4382:e6def213
Events : 0.9440
Number Major Minor RaidDevice State
0 8 2 0 active sync /dev/sda2
1 8 18 1 active sync /dev/sdb2
Now testing raid device "/dev/md2"
/dev/md2:
Version : 00.90.03
Creation Time : Thu Apr 10 17:46:25 2008
Raid Level : raid1
Array Size : 292053568 (278.52 GiB 299.06 GB)
Device Size : 292053568 (278.52 GiB 299.06 GB)
Raid Devices : 2
Total Devices : 2
Preferred Minor : 2
Persistence : Superblock is persistent
Update Time : Mon Apr 28 18:31:36 2008
State : clean
Active Devices : 2
Working Devices : 2
Failed Devices : 0
Spare Devices : 0
UUID : 8d954d13:82dabd5b:096fe691:7819c2d2
Events : 0.8
Number Major Minor RaidDevice State
0 8 3 0 active sync /dev/sda3
1 8 19 1 active sync /dev/sdb3
RAID OK: All arrays OK
xenhost7:/usr/local/nagios/libexec/non-std# mdadm --detail /dev/md{0..2}
/dev/md0:
Version : 00.90.03
Creation Time : Thu Apr 10 17:46:04 2008
Raid Level : raid1
Array Size : 979840 (957.04 MiB 1003.36 MB)
Device Size : 979840 (957.04 MiB 1003.36 MB)
Raid Devices : 2
Total Devices : 2
Preferred Minor : 0
Persistence : Superblock is persistent
Update Time : Mon Apr 28 11:42:28 2008
State : clean
Active Devices : 2
Working Devices : 2
Failed Devices : 0
Spare Devices : 0
UUID : 956ff562:7ba15903:6068b800:4a673998
Events : 0.2
Number Major Minor RaidDevice State
0 8 1 0 active sync /dev/sda1
1 8 17 1 active sync /dev/sdb1
/dev/md1:
Version : 00.90.03
Creation Time : Thu Apr 10 17:46:15 2008
Raid Level : raid1
Array Size : 19534976 (18.63 GiB 20.00 GB)
Device Size : 19534976 (18.63 GiB 20.00 GB)
Raid Devices : 2
Total Devices : 2
Preferred Minor : 1
Persistence : Superblock is persistent
Update Time : Wed Apr 30 16:18:50 2008
State : clean
Active Devices : 2
Working Devices : 2
Failed Devices : 0
Spare Devices : 0
UUID : 119bcdde:0ac351b2:d05e4382:e6def213
Events : 0.9440
Number Major Minor RaidDevice State
0 8 2 0 active sync /dev/sda2
1 8 18 1 active sync /dev/sdb2
/dev/md2:
Version : 00.90.03
Creation Time : Thu Apr 10 17:46:25 2008
Raid Level : raid1
Array Size : 292053568 (278.52 GiB 299.06 GB)
Device Size : 292053568 (278.52 GiB 299.06 GB)
Raid Devices : 2
Total Devices : 2
Preferred Minor : 2
Persistence : Superblock is persistent
Update Time : Mon Apr 28 18:31:36 2008
State : clean
Active Devices : 2
Working Devices : 2
Failed Devices : 0
Spare Devices : 0
UUID : 8d954d13:82dabd5b:096fe691:7819c2d2
Events : 0.8
Number Major Minor RaidDevice State
0 8 3 0 active sync /dev/sda3
1 8 19 1 active sync /dev/sdb3
Removing /dev/sdb2 from /dev/md1:
xenhost7:/usr/local/nagios/libexec/non-std# mdadm --manage /dev/md1 --fail
/dev/sdb2; \
> mdadm --manage /dev/md1 --remove /dev/sdb2; \
> date; \
> ./check_md_raid.pl -vvv
mdadm: set /dev/sdb2 faulty in /dev/md1
mdadm: hot removed /dev/sdb2
mié abr 30 16:27:55 ART 2008
finding all MD arrays via mdadm --detail --scan
found array /dev/md0
found array /dev/md1
found array /dev/md2
Now testing raid device "/dev/md0"
/dev/md0:
Version : 00.90.03
Creation Time : Thu Apr 10 17:46:04 2008
Raid Level : raid1
Array Size : 979840 (957.04 MiB 1003.36 MB)
Device Size : 979840 (957.04 MiB 1003.36 MB)
Raid Devices : 2
Total Devices : 2
Preferred Minor : 0
Persistence : Superblock is persistent
Update Time : Mon Apr 28 11:42:28 2008
State : clean
Active Devices : 2
Working Devices : 2
Failed Devices : 0
Spare Devices : 0
UUID : 956ff562:7ba15903:6068b800:4a673998
Events : 0.2
Number Major Minor RaidDevice State
0 8 1 0 active sync /dev/sda1
1 8 17 1 active sync /dev/sdb1
Now testing raid device "/dev/md1"
/dev/md1:
Version : 00.90.03
Creation Time : Thu Apr 10 17:46:15 2008
Raid Level : raid1
Array Size : 19534976 (18.63 GiB 20.00 GB)
Device Size : 19534976 (18.63 GiB 20.00 GB)
Raid Devices : 2
Total Devices : 1
Preferred Minor : 1
Persistence : Superblock is persistent
Update Time : Wed Apr 30 16:27:55 2008
State : active, degraded
Active Devices : 1
Working Devices : 1
Failed Devices : 0
Spare Devices : 0
UUID : 119bcdde:0ac351b2:d05e4382:e6def213
Events : 0.9445
Number Major Minor RaidDevice State
0 8 2 0 active sync /dev/sda2
1 0 0 1 removed
RAID CRITICAL: Array MD1 is in state "active, degraded" (raid1)
Now testing raid device "/dev/md2"
/dev/md2:
Version : 00.90.03
Creation Time : Thu Apr 10 17:46:25 2008
Raid Level : raid1
Array Size : 292053568 (278.52 GiB 299.06 GB)
Device Size : 292053568 (278.52 GiB 299.06 GB)
Raid Devices : 2
Total Devices : 2
Preferred Minor : 2
Persistence : Superblock is persistent
Update Time : Mon Apr 28 18:31:36 2008
State : clean
Active Devices : 2
Working Devices : 2
Failed Devices : 0
Spare Devices : 0
UUID : 8d954d13:82dabd5b:096fe691:7819c2d2
Events : 0.8
Number Major Minor RaidDevice State
0 8 3 0 active sync /dev/sda3
1 8 19 1 active sync /dev/sdb3
xenhost7:/usr/local/nagios/libexec/non-std# mdadm --detail /dev/md{0..2}
/dev/md0:
Version : 00.90.03
Creation Time : Thu Apr 10 17:46:04 2008
Raid Level : raid1
Array Size : 979840 (957.04 MiB 1003.36 MB)
Device Size : 979840 (957.04 MiB 1003.36 MB)
Raid Devices : 2
Total Devices : 2
Preferred Minor : 0
Persistence : Superblock is persistent
Update Time : Mon Apr 28 11:42:28 2008
State : clean
Active Devices : 2
Working Devices : 2
Failed Devices : 0
Spare Devices : 0
UUID : 956ff562:7ba15903:6068b800:4a673998
Events : 0.2
Number Major Minor RaidDevice State
0 8 1 0 active sync /dev/sda1
1 8 17 1 active sync /dev/sdb1
/dev/md1:
Version : 00.90.03
Creation Time : Thu Apr 10 17:46:15 2008
Raid Level : raid1
Array Size : 19534976 (18.63 GiB 20.00 GB)
Device Size : 19534976 (18.63 GiB 20.00 GB)
Raid Devices : 2
Total Devices : 1
Preferred Minor : 1
Persistence : Superblock is persistent
Update Time : Wed Apr 30 16:29:01 2008
State : clean, degraded
Active Devices : 1
Working Devices : 1
Failed Devices : 0
Spare Devices : 0
UUID : 119bcdde:0ac351b2:d05e4382:e6def213
Events : 0.9458
Number Major Minor RaidDevice State
0 8 2 0 active sync /dev/sda2
1 0 0 1 removed
/dev/md2:
Version : 00.90.03
Creation Time : Thu Apr 10 17:46:25 2008
Raid Level : raid1
Array Size : 292053568 (278.52 GiB 299.06 GB)
Device Size : 292053568 (278.52 GiB 299.06 GB)
Raid Devices : 2
Total Devices : 2
Preferred Minor : 2
Persistence : Superblock is persistent
Update Time : Mon Apr 28 18:31:36 2008
State : clean
Active Devices : 2
Working Devices : 2
Failed Devices : 0
Spare Devices : 0
UUID : 8d954d13:82dabd5b:096fe691:7819c2d2
Events : 0.8
Number Major Minor RaidDevice State
0 8 3 0 active sync /dev/sda3
1 8 19 1 active sync /dev/sdb3
xenhost7:/usr/local/nagios/libexec/non-std# date
mié abr 30 16:31:28 ART 2008
xenhost7:/usr/local/nagios/libexec/non-std# ./check_md_raid.pl -vvv
finding all MD arrays via mdadm --detail --scan
found array /dev/md0
found array /dev/md1
found array /dev/md2
Now testing raid device "/dev/md0"
/dev/md0:
Version : 00.90.03
Creation Time : Thu Apr 10 17:46:04 2008
Raid Level : raid1
Array Size : 979840 (957.04 MiB 1003.36 MB)
Device Size : 979840 (957.04 MiB 1003.36 MB)
Raid Devices : 2
Total Devices : 2
Preferred Minor : 0
Persistence : Superblock is persistent
Update Time : Mon Apr 28 11:42:28 2008
State : clean
Active Devices : 2
Working Devices : 2
Failed Devices : 0
Spare Devices : 0
UUID : 956ff562:7ba15903:6068b800:4a673998
Events : 0.2
Number Major Minor RaidDevice State
0 8 1 0 active sync /dev/sda1
1 8 17 1 active sync /dev/sdb1
Now testing raid device "/dev/md1"
/dev/md1:
Version : 00.90.03
Creation Time : Thu Apr 10 17:46:15 2008
Raid Level : raid1
Array Size : 19534976 (18.63 GiB 20.00 GB)
Device Size : 19534976 (18.63 GiB 20.00 GB)
Raid Devices : 2
Total Devices : 1
Preferred Minor : 1
Persistence : Superblock is persistent
Update Time : Wed Apr 30 16:31:27 2008
State : clean, degraded
Active Devices : 1
Working Devices : 1
Failed Devices : 0
Spare Devices : 0
UUID : 119bcdde:0ac351b2:d05e4382:e6def213
Events : 0.9490
Number Major Minor RaidDevice State
0 8 2 0 active sync /dev/sda2
1 0 0 1 removed
Now testing raid device "/dev/md2"
/dev/md2:
Version : 00.90.03
Creation Time : Thu Apr 10 17:46:25 2008
Raid Level : raid1
Array Size : 292053568 (278.52 GiB 299.06 GB)
Device Size : 292053568 (278.52 GiB 299.06 GB)
Raid Devices : 2
Total Devices : 2
Preferred Minor : 2
Persistence : Superblock is persistent
Update Time : Mon Apr 28 18:31:36 2008
State : clean
Active Devices : 2
Working Devices : 2
Failed Devices : 0
Spare Devices : 0
UUID : 8d954d13:82dabd5b:096fe691:7819c2d2
Events : 0.8
Number Major Minor RaidDevice State
0 8 3 0 active sync /dev/sda3
1 8 19 1 active sync /dev/sdb3
RAID OK: All arrays OK
Momentarily it shows CRITICAL state.
Rebuilding:
xenhost7:/usr/local/nagios/libexec/non-std# date
mié abr 30 16:44:15 ART 2008
xenhost7:/usr/local/nagios/libexec/non-std# mdadm /dev/md1 --add /dev/sdb2;
./check_md_raid.pl -vvv
mdadm: re-added /dev/sdb2
finding all MD arrays via mdadm --detail --scan
found array /dev/md0
found array /dev/md1
found array /dev/md2
Now testing raid device "/dev/md0"
/dev/md0:
Version : 00.90.03
Creation Time : Thu Apr 10 17:46:04 2008
Raid Level : raid1
Array Size : 979840 (957.04 MiB 1003.36 MB)
Device Size : 979840 (957.04 MiB 1003.36 MB)
Raid Devices : 2
Total Devices : 2
Preferred Minor : 0
Persistence : Superblock is persistent
Update Time : Mon Apr 28 11:42:28 2008
State : clean
Active Devices : 2
Working Devices : 2
Failed Devices : 0
Spare Devices : 0
UUID : 956ff562:7ba15903:6068b800:4a673998
Events : 0.2
Number Major Minor RaidDevice State
0 8 1 0 active sync /dev/sda1
1 8 17 1 active sync /dev/sdb1
Now testing raid device "/dev/md1"
/dev/md1:
Version : 00.90.03
Creation Time : Thu Apr 10 17:46:15 2008
Raid Level : raid1
Array Size : 19534976 (18.63 GiB 20.00 GB)
Device Size : 19534976 (18.63 GiB 20.00 GB)
Raid Devices : 2
Total Devices : 2
Preferred Minor : 1
Persistence : Superblock is persistent
Update Time : Wed Apr 30 16:50:27 2008
State : clean, degraded, recovering
Active Devices : 1
Working Devices : 2
Failed Devices : 0
Spare Devices : 1
Rebuild Status : 0% complete
UUID : 119bcdde:0ac351b2:d05e4382:e6def213
Events : 0.9626
Number Major Minor RaidDevice State
0 8 2 0 active sync /dev/sda2
1 8 18 1 spare rebuilding /dev/sdb2
Now testing raid device "/dev/md2"
/dev/md2:
Version : 00.90.03
Creation Time : Thu Apr 10 17:46:25 2008
Raid Level : raid1
Array Size : 292053568 (278.52 GiB 299.06 GB)
Device Size : 292053568 (278.52 GiB 299.06 GB)
Raid Devices : 2
Total Devices : 2
Preferred Minor : 2
Persistence : Superblock is persistent
Update Time : Mon Apr 28 18:31:36 2008
State : clean
Active Devices : 2
Working Devices : 2
Failed Devices : 0
Spare Devices : 0
UUID : 8d954d13:82dabd5b:096fe691:7819c2d2
Events : 0.8
Number Major Minor RaidDevice State
0 8 3 0 active sync /dev/sda3
1 8 19 1 active sync /dev/sdb3
RAID OK: All arrays OK
xenhost7:/usr/local/nagios/libexec/non-std# mdadm --detail /dev/md{0..2}
/dev/md0:
Version : 00.90.03
Creation Time : Thu Apr 10 17:46:04 2008
Raid Level : raid1
Array Size : 979840 (957.04 MiB 1003.36 MB)
Device Size : 979840 (957.04 MiB 1003.36 MB)
Raid Devices : 2
Total Devices : 2
Preferred Minor : 0
Persistence : Superblock is persistent
Update Time : Mon Apr 28 11:42:28 2008
State : clean
Active Devices : 2
Working Devices : 2
Failed Devices : 0
Spare Devices : 0
UUID : 956ff562:7ba15903:6068b800:4a673998
Events : 0.2
Number Major Minor RaidDevice State
0 8 1 0 active sync /dev/sda1
1 8 17 1 active sync /dev/sdb1
/dev/md1:
Version : 00.90.03
Creation Time : Thu Apr 10 17:46:15 2008
Raid Level : raid1
Array Size : 19534976 (18.63 GiB 20.00 GB)
Device Size : 19534976 (18.63 GiB 20.00 GB)
Raid Devices : 2
Total Devices : 2
Preferred Minor : 1
Persistence : Superblock is persistent
Update Time : Wed Apr 30 16:53:51 2008
State : clean, degraded, recovering
Active Devices : 1
Working Devices : 2
Failed Devices : 0
Spare Devices : 1
Rebuild Status : 74% complete
UUID : 119bcdde:0ac351b2:d05e4382:e6def213
Events : 0.9650
Number Major Minor RaidDevice State
0 8 2 0 active sync /dev/sda2
2 8 18 1 spare rebuilding /dev/sdb2
/dev/md2:
Version : 00.90.03
Creation Time : Thu Apr 10 17:46:25 2008
Raid Level : raid1
Array Size : 292053568 (278.52 GiB 299.06 GB)
Device Size : 292053568 (278.52 GiB 299.06 GB)
Raid Devices : 2
Total Devices : 2
Preferred Minor : 2
Persistence : Superblock is persistent
Update Time : Mon Apr 28 18:31:36 2008
State : clean
Active Devices : 2
Working Devices : 2
Failed Devices : 0
Spare Devices : 0
UUID : 8d954d13:82dabd5b:096fe691:7819c2d2
Events : 0.8
Number Major Minor RaidDevice State
0 8 3 0 active sync /dev/sda3
1 8 19 1 active sync /dev/sdb3
It shows OK state during reconstruction.
Thanks in advance for your response.
Regards,
Daniel
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