Good day!
I have problems with spare-groups. The problem: spare groups dont work
for me. How can i use ths function?
The test :
# mdadm26 -D /dev/md0
/dev/md0:
Version : 01.02.03
Creation Time : Mon Jun 11 15:25:23 2007
Raid Level : raid5
Array Size : 19534720 (18.63 GiB 20.00 GB)
Used Dev Size : 19534720 (9.31 GiB 10.00 GB)
Raid Devices : 3
Total Devices : 3
Preferred Minor : 0
Persistence : Superblock is persistent
Update Time : Mon Jun 11 16:05:21 2007
State : clean, degraded
Active Devices : 2
Working Devices : 2
Failed Devices : 1
Spare Devices : 0
Layout : left-symmetric
Chunk Size : 64K
Name : ursula:T1 (local to host ursula)
UUID : 3e420024:281f9bb1:fd9ef39b:c18153b1
Events : 10
Number Major Minor RaidDevice State
0 0 0 0 removed
1 8 17 1 active sync /dev/sdb1
3 8 33 2 active sync /dev/sdc1
0 8 1 - faulty spare /dev/sda1
# mdadm26 -D /dev/md1
/dev/md1:
Version : 01.02.03
Creation Time : Mon Jun 11 15:35:40 2007
Raid Level : raid5
Array Size : 19534720 (18.63 GiB 20.00 GB)
Used Dev Size : 19534720 (9.31 GiB 10.00 GB)
Raid Devices : 3
Total Devices : 4
Preferred Minor : 1
Persistence : Superblock is persistent
Update Time : Mon Jun 11 15:38:23 2007
State : clean
Active Devices : 3
Working Devices : 4
Failed Devices : 0
Spare Devices : 1
Layout : left-symmetric
Chunk Size : 64K
Name : ursula:T2 (local to host ursula)
UUID : fb8ece28:9a6a31f8:700f37f6:7ee91bcf
Events : 6
Number Major Minor RaidDevice State
0 8 49 0 active sync /dev/sdd1
1 8 65 1 active sync /dev/sde1
3 8 81 2 active sync /dev/sdf1
4 8 97 - spare /dev/sdg1
# cat /etc/mdadm/mdadm.conf
DEVICE /dev/sd[a-g]1
HOMEHOST ursula
ARRAY /dev/md1 level=raid5 devices=/dev/sd[defg]1 num-devices=3
spares=1 spare-group=ubul name=ursula:T2
UUID=fb8ece28:9a6a31f8:700f37f6:7ee91bcf
ARRAY /dev/md0 level=raid5 devices=/dev/sd[abc]1 num-devices=3
spare-group=ubul name=ursula:T1 UUID=3e420024:281f9bb1:fd9ef39b:c18153b1
According to the source:
* If an array has active < raid && spare == 0 && spare_group !=NULL
* Look for another array with spare > 0 and active == raid and same
spare_group
* if found, choose a device and hotremove/hotadd
This is not happening. What is my mistake?
tg
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