Windows setup raid 0 partitions not showing up right in linux
From: gargle (gargle_at_none.com)
Date: 06/30/05
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Date: Thu, 30 Jun 2005 05:55:43 GMT
Hi all,
I recently installed two WD 80GB SATA drives on a new system and
created a raid 0 array from them, from which I created two partitions
with the windows xp setup program. I installed Linux on the main IDE
drive separate from this. Now I can't get Linux (mdadm) to properly
detect that raid setup.
/proc/partitions reports the following:
major minor #blocks name
3 0 78150744 hda
3 1 76662148 hda1
3 2 1 hda2
3 5 1485981 hda5
254 0 76662148 dm-0
254 1 1485981 dm-1
8 0 78150744 sda
8 1 43005973 sda1
8 2 1 sda2
8 16 78150744 sdb
/dev/sda and sdb are the drives obviously, and sda1 and sda2 are the
start of my partitions (sda1 blocks is actually correct, sda2 blocks
obviously not).
A quick examine with "mdadm -E /dev/sda1" responds "mdadm: no RAID
superblock on /dev/sda1". Obviously b/c they were made with windows setup.
"mdadm -A /dev/md0 /dev/sda /dev/sdb" will cause mdadm to assemble a
single partition out of the whole devices, sda and sdb, and it will
report them working just fine. But I can't mount that since it's not
really a working file system.
My question of course is how do I detect and mount my partitions without
repartitioning / destroying them in some way? Any suggestions would be
very appreciated at this point.
Thanks,
Ryan
More stuff:
AMD Athlon 64 3200+
ASUS A8N-SLI D motherboard
Silicon Image 3114 hardware RAID controller
Ubuntu AMD64 install
"mdadm -E /dev/sda", etc.
/dev/sda:
Magic : a92b4efc
Version : 00.90.01
UUID : d7c87995:bc0950b3:766126b8:b07bce88
Creation Time : Sun Jun 26 20:30:12 2005
Raid Level : raid0
Device Size : 78150656 (74.53 GiB 80.03 GB)
Raid Devices : 2
Total Devices : 2
Preferred Minor : 0
Update Time : Sun Jun 26 20:30:12 2005
State : active
Active Devices : 2
Working Devices : 2
Failed Devices : 0
Spare Devices : 0
Checksum : ee021c52 - correct
Events : 0.2
Chunk Size : 64K
Number Major Minor RaidDevice State
this 0 8 0 0 active sync /dev/sda
0 0 8 0 0 active sync /dev/sda
1 1 8 16 1 active sync /dev/sdb
/dev/sdb:
Magic : a92b4efc
Version : 00.90.01
UUID : d7c87995:bc0950b3:766126b8:b07bce88
Creation Time : Sun Jun 26 20:30:12 2005
Raid Level : raid0
Device Size : 78150656 (74.53 GiB 80.03 GB)
Raid Devices : 2
Total Devices : 2
Preferred Minor : 0
Update Time : Sun Jun 26 20:30:12 2005
State : active
Active Devices : 2
Working Devices : 2
Failed Devices : 0
Spare Devices : 0
Checksum : ee021c64 - correct
Events : 0.2
Chunk Size : 64K
Number Major Minor RaidDevice State
this 1 8 16 1 active sync /dev/sdb
0 0 8 0 0 active sync /dev/sda
1 1 8 16 1 active sync /dev/sdb
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