Bisherige Konfiguration:
root@dione:~# mdadm --detail /dev/md3
/dev/md3:
Version : 0.90
Creation Time : Sun Jan 30 10:37:10 2011
Raid Level : raid1
Array Size : 914847680 (872.47 GiB 936.80 GB)
Used Dev Size : 914847680 (872.47 GiB 936.80 GB)
Raid Devices : 2
Total Devices : 2
Preferred Minor : 3
Persistence : Superblock is persistent
Update Time : Sun Feb 21 10:56:56 2016
State : clean
Active Devices : 2
Working Devices : 2
Failed Devices : 0
Spare Devices : 0
UUID : 907d383c:2bcb4225:91af66a1:ac841612 (local to host dione)
Events : 0.60469
Number Major Minor RaidDevice State
0 8 19 0 active sync /dev/sdb3
1 8 35 1 active sync /dev/sdc3
/dev/sdc3 aus dem Spiegel herauslösen:
root@dione:~# mdadm --manage /dev/md3 -f /dev/sdc3
mdadm: set /dev/sdc3 faulty in /dev/md3
root@dione:~# mdadm --manage /dev/md3 -r /dev/sdc3
mdadm: hot removed /dev/sdc3 from /dev/md3
/dev/md3 sieht jetzte wie folgt aus:
root@dione:~# mdadm --detail /dev/md3
/dev/md3:
Version : 0.90
Creation Time : Sun Jan 30 10:37:10 2011
Raid Level : raid1
Array Size : 914847680 (872.47 GiB 936.80 GB)
Used Dev Size : 914847680 (872.47 GiB 936.80 GB)
Raid Devices : 2
Total Devices : 1
Preferred Minor : 3
Persistence : Superblock is persistent
Update Time : Sun Feb 21 10:57:36 2016
State : clean, degraded
Active Devices : 1
Working Devices : 1
Failed Devices : 0
Spare Devices : 0
UUID : 907d383c:2bcb4225:91af66a1:ac841612 (local to host dione)
Events : 0.60480
Number Major Minor RaidDevice State
0 8 19 0 active sync /dev/sdb3
1 0 0 1 removed
Physisches Volume auf /dev/sdc3 anlegen:
root@dione:~# pvcreate /dev/sdc3
WARNING: software RAID md superblock detected on /dev/sdc3. Wipe it? [y/n] y
Wiping software RAID md superblock on /dev/sdc3.
Physical volume "/dev/sdc3" successfully created
Volume Gruppe vol1 um /dev/sdc3 erweitern:
root@dione:~# vgextend vol1 /dev/sdc3
Volume group "vol1" successfully extended
Volume vol1/home in Spiegel umwandeln:
root@dione:~# lvconvert -m1 vol1/home --corelog
vol1/home: Converted: 0.0%
...
Status des LV:
root@dione:~# lvs -a -o +devices
LV VG Attr LSize Pool Origin Data% Move Log Copy% Convert Devices
home vol1 mwi-aom-- 711.00g 13.38 home_mimage_0(0),home_mimage_1(0)
[home_mimage_0] vol1 Iwi-aom-- 711.00g /dev/md3(158976)
[home_mimage_0] vol1 Iwi-aom-- 711.00g /dev/md3(32187)
[home_mimage_0] vol1 Iwi-aom-- 711.00g /dev/md3(191163)
[home_mimage_1] vol1 Iwi-aom-- 711.00g /dev/sdc3(0)