centos 5.9 raid1 software with issues
Posted: 2018/03/16 19:56:37
Hi
i saw a few days ago some issues and checked the status of mdadm
[root@doppler /]# cat /proc/mdstat
Personalities : [raid1]
md1 : active raid1 sdb1[1] sda1[0]
1020032 blocks [2/2] [UU]
md0 : active raid1 sdb3[1] sda3[0]
2457856 blocks [2/2] [UU]
md2 : active raid1 sda2[2](S) sdb2[1]
973281856 blocks [2/1] [_U]
unused devices: <none>
***************************
[root@doppler /]# mdadm --detail /dev/md2
/dev/md2:
Version : 0.90
Creation Time : Wed Oct 4 08:40:20 2017
Raid Level : raid1
Array Size : 973281856 (928.19 GiB 996.64 GB)
Used Dev Size : 973281856 (928.19 GiB 996.64 GB)
Raid Devices : 2
Total Devices : 2
Preferred Minor : 2
Persistence : Superblock is persistent
Update Time : Fri Mar 16 21:54:54 2018
State : clean, degraded
Active Devices : 1
Working Devices : 2
Failed Devices : 0
Spare Devices : 1
UUID : c712ef6d:0bf35c3e:ab21d71a:d447dcce
Events : 0.6234132
Number Major Minor RaidDevice State
0 0 0 0 removed
1 8 18 1 active sync /dev/sdb2
2 8 2 - spare /dev/sda2
*****************************
[root@doppler /]# mdadm --examine /dev/sda2
/dev/sda2:
Magic : a92b4efc
Version : 0.90.00
UUID : c712ef6d:0bf35c3e:ab21d71a:d447dcce
Creation Time : Wed Oct 4 08:40:20 2017
Raid Level : raid1
Used Dev Size : 973281856 (928.19 GiB 996.64 GB)
Array Size : 973281856 (928.19 GiB 996.64 GB)
Raid Devices : 2
Total Devices : 2
Preferred Minor : 2
Update Time : Fri Mar 16 21:53:07 2018
State : clean
Active Devices : 1
Working Devices : 2
Failed Devices : 0
Spare Devices : 1
Checksum : eadd3e4d - correct
Events : 6234100
Number Major Minor RaidDevice State
this 2 8 2 2 spare /dev/sda2
0 0 0 0 0 removed
1 1 8 18 1 active sync /dev/sdb2
2 2 8 2 2 spare /dev/sda2
[root@doppler /]# mdadm --examine /dev/sdb2
/dev/sdb2:
Magic : a92b4efc
Version : 0.90.00
UUID : c712ef6d:0bf35c3e:ab21d71a:d447dcce
Creation Time : Wed Oct 4 08:40:20 2017
Raid Level : raid1
Used Dev Size : 973281856 (928.19 GiB 996.64 GB)
Array Size : 973281856 (928.19 GiB 996.64 GB)
Raid Devices : 2
Total Devices : 2
Preferred Minor : 2
Update Time : Fri Mar 16 21:53:07 2018
State : clean
Active Devices : 1
Working Devices : 2
Failed Devices : 0
Spare Devices : 1
Checksum : eadd3e61 - correct
Events : 6234100
Number Major Minor RaidDevice State
this 1 8 18 1 active sync /dev/sdb2
0 0 0 0 0 removed
1 1 8 18 1 active sync /dev/sdb2
2 2 8 2 2 spare /dev/sda2
You have mail in /var/spool/mail/root
Please advice what to do.
Thank you
i saw a few days ago some issues and checked the status of mdadm
[root@doppler /]# cat /proc/mdstat
Personalities : [raid1]
md1 : active raid1 sdb1[1] sda1[0]
1020032 blocks [2/2] [UU]
md0 : active raid1 sdb3[1] sda3[0]
2457856 blocks [2/2] [UU]
md2 : active raid1 sda2[2](S) sdb2[1]
973281856 blocks [2/1] [_U]
unused devices: <none>
***************************
[root@doppler /]# mdadm --detail /dev/md2
/dev/md2:
Version : 0.90
Creation Time : Wed Oct 4 08:40:20 2017
Raid Level : raid1
Array Size : 973281856 (928.19 GiB 996.64 GB)
Used Dev Size : 973281856 (928.19 GiB 996.64 GB)
Raid Devices : 2
Total Devices : 2
Preferred Minor : 2
Persistence : Superblock is persistent
Update Time : Fri Mar 16 21:54:54 2018
State : clean, degraded
Active Devices : 1
Working Devices : 2
Failed Devices : 0
Spare Devices : 1
UUID : c712ef6d:0bf35c3e:ab21d71a:d447dcce
Events : 0.6234132
Number Major Minor RaidDevice State
0 0 0 0 removed
1 8 18 1 active sync /dev/sdb2
2 8 2 - spare /dev/sda2
*****************************
[root@doppler /]# mdadm --examine /dev/sda2
/dev/sda2:
Magic : a92b4efc
Version : 0.90.00
UUID : c712ef6d:0bf35c3e:ab21d71a:d447dcce
Creation Time : Wed Oct 4 08:40:20 2017
Raid Level : raid1
Used Dev Size : 973281856 (928.19 GiB 996.64 GB)
Array Size : 973281856 (928.19 GiB 996.64 GB)
Raid Devices : 2
Total Devices : 2
Preferred Minor : 2
Update Time : Fri Mar 16 21:53:07 2018
State : clean
Active Devices : 1
Working Devices : 2
Failed Devices : 0
Spare Devices : 1
Checksum : eadd3e4d - correct
Events : 6234100
Number Major Minor RaidDevice State
this 2 8 2 2 spare /dev/sda2
0 0 0 0 0 removed
1 1 8 18 1 active sync /dev/sdb2
2 2 8 2 2 spare /dev/sda2
[root@doppler /]# mdadm --examine /dev/sdb2
/dev/sdb2:
Magic : a92b4efc
Version : 0.90.00
UUID : c712ef6d:0bf35c3e:ab21d71a:d447dcce
Creation Time : Wed Oct 4 08:40:20 2017
Raid Level : raid1
Used Dev Size : 973281856 (928.19 GiB 996.64 GB)
Array Size : 973281856 (928.19 GiB 996.64 GB)
Raid Devices : 2
Total Devices : 2
Preferred Minor : 2
Update Time : Fri Mar 16 21:53:07 2018
State : clean
Active Devices : 1
Working Devices : 2
Failed Devices : 0
Spare Devices : 1
Checksum : eadd3e61 - correct
Events : 6234100
Number Major Minor RaidDevice State
this 1 8 18 1 active sync /dev/sdb2
0 0 0 0 0 removed
1 1 8 18 1 active sync /dev/sdb2
2 2 8 2 2 spare /dev/sda2
You have mail in /var/spool/mail/root
Please advice what to do.
Thank you