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wan-geek
n00b
Joined: 03 Apr 2003
Posts: 66
Location: knee-deep in the ether
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 Posted: Sat Oct 30, 2004 1:46 am Post subject: Software Raid partitions on a sparc system |
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Ok. Have followed the HOWTO's for building a software-based raid array in my E450. Was having an issue where the partitions would disappear upon reboot...and found this post:
| Code: | | http://forums.gentoo.org/viewtopic.php?t=152881&highlight=sparc+raid5 |
So...rebuilt RAID array per the HOWTO. All "appears" to be working. I can format and mount the raid volume fine.
THis is what concerns me.
| Code: |
jukebox ~ # lsraid -a /dev/md0
lsraid: Device "/dev/scsi/host0/bus0/target1/lun0/part1" does not have a valid raid superblock
lsraid: Device "/dev/scsi/host0/bus0/target2/lun0/part1" does not have a valid raid superblock
lsraid: Device "/dev/scsi/host0/bus0/target3/lun0/part1" does not have a valid raid superblock
lsraid: Device "/dev/scsi/host1/bus0/target1/lun0/part1" does not have a valid raid superblock
lsraid: Device "/dev/scsi/host1/bus0/target2/lun0/part1" does not have a valid raid superblock
lsraid: Device "/dev/scsi/host1/bus0/target3/lun0/part1" does not have a valid raid superblock
lsraid: Device "/dev/scsi/host3/bus0/target2/lun0/part1" does not have a valid raid superblock
lsraid: Device "/dev/scsi/host3/bus0/target3/lun0/part1" does not have a valid raid superblock
[dev 9, 0] /dev/md0 00000000.00000000.00000000.00000000 online
[dev ?, ?] (unknown) 00000000.00000000.00000000.00000000 missing
[dev ?, ?] (unknown) 00000000.00000000.00000000.00000000 missing
[dev ?, ?] (unknown) 00000000.00000000.00000000.00000000 missing
[dev ?, ?] (unknown) 00000000.00000000.00000000.00000000 missing
[dev ?, ?] (unknown) 00000000.00000000.00000000.00000000 missing
[dev ?, ?] (unknown) 00000000.00000000.00000000.00000000 missing
[dev ?, ?] (unknown) 00000000.00000000.00000000.00000000 missing
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I have googled and searched the forums, without much luck as to why the superblock seems missing on each disk in the volume. mkraid indicates that it adds the superblock ok...and starts rebuilding the array without any complaints.
Anyone have any ideas as to why lsraid is bitching?
I NEED to know that this is built correctly before I start migrating data over.
Cheers,
-Chris |
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labrador
Guru
Joined: 04 Oct 2003
Posts: 316
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| Posted: Mon Nov 01, 2004 11:46 pm Post subject: Perhaps lsraid is broken |
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I don't get good results from the lsraid command on x86, and
my RAID is fine. On x86, lsraid often produces a segmentation fault.
Try this instead:
That should give you a good report card on how well the raid is set up.
Also, try the mdadm command and options. |
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Weeve
Retired Dev
Joined: 30 Oct 2002
Posts: 641
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| Posted: Tue Nov 02, 2004 3:06 am Post subject: |
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| Also, make sure that none of your RAID paritions start on cylinder 0 |
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wan-geek
n00b
Joined: 03 Apr 2003
Posts: 66
Location: knee-deep in the ether
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| Posted: Tue Nov 02, 2004 3:13 am Post subject: |
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yeah. found the issue with the partitions on cyl 0. have everything sitting higher up on the disk.
perhaps this is just a cosmetic issue...???...
thanks for the insight.
-Chris |
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