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Old 11-09-2011, 08:17 PM
Adrian Sevcenco
 
Default f14 :: partitionable raid1 :: there is no md_d0pX

Hi,
I have 2 disks for doing raid1 and the layout is 2 primary partitions.
I tried to do a partionable raid1 as in
http://wiki.centos.org/HowTos/Install_On_Partitionable_RAID1 thinking
that linux is linux and the underlying mechanics is the same.
i did this :
mdadm --create --level=1 --raid-devices=2 /dev/md_d0 /dev/sdb missing
mdadm --add /dev/md_d0 /dev/sdc

the sync is doing ok :
root@adrian: ~ # cat /proc/mdstat
Personalities : [raid1]
md_d0 : active raid1 sdc[2] sdb[0]
976760367 blocks super 1.2 [2/1] [U_]
[====>................] recovery = 22.2% (217118464/976760367)
finish=134.8min speed=93842K/sec

root@adrian: ~ # mdadm --detail /dev/md_d0
/dev/md_d0:
Version : 1.2
Creation Time : Wed Nov 9 22:33:42 2011
Raid Level : raid1
Array Size : 976760367 (931.51 GiB 1000.20 GB)
Used Dev Size : 976760367 (931.51 GiB 1000.20 GB)
Raid Devices : 2
Total Devices : 2
Persistence : Superblock is persistent

Update Time : Wed Nov 9 23:06:26 2011
State : clean, degraded, recovering
Active Devices : 1
Working Devices : 2
Failed Devices : 0
Spare Devices : 1

Rebuild Status : 22% complete

Name : adrian.home:d0 (local to host adrian.home)
UUID : 020aaa6d:5e7cc4ba:38d839fb:4ce0b368
Events : 11

Number Major Minor RaidDevice State
0 8 16 0 active sync /dev/sdb
2 8 32 1 spare rebuilding /dev/sdc

the problems is the following :
root@adrian: ~ # mdadm --examine --scan
ARRAY /dev/md/d0 metadata=1.2 UUID=020aaa6d:5e7cc4ba:38d839fb:4ce0b368
name=adrian.home:d0

where instead of /dev/md_d0 it shows /dev/md/d0.
as in the mentioned howto i modified the mdadm.conf but i still dont
have the md devices! i would have expected (as in centos5)
to have md_d0p1 and md_d0p2
Did anyone used partitonable raid1 in fedora? what were your
experiences? have anyone an idea about my problem?

Thanks,
Adrian








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