t2000 raid HW: detach disk and reattach?
hello all,
on T2000, disk 0 and disk 1 are mirrored:
# raidctl -l
RAIDVolume RAIDRAIDDisk
Volume TypeStatus DiskStatus
c0t0d0 IMOK c0t0d0 OK
c0t1d0 OK
Now, i want to break the mirror, and the idea is to mount the second disk on other T2000, then re-create the mirror. So i did the following steps:
- delete the mirror
# raidctl -d c0t0d0
# raidctl
No RAID volumes found
- as format don't see the second disk, i used devfsadm -v -c disk to re-create links in /dev/dsk
- then i mount the second disk without problem
- finally, i reinserted the second disk in t2000 and tried to re-create raid volume:
AVAILABLE DISK SELECTIONS:
0. c0t0d0 <LSILOGIC-LogicalVolume-3000 cyl 65533 alt 2 hd 16 sec 136>
/pci@780/pci@0/pci@9/scsi@0/sd@0,0
1. c0t1d0 <LSILOGIC-LogicalVolume-3000 cyl 65533 alt 2 hd 16 sec 136>
/pci@780/pci@0/pci@9/scsi@0/sd@1,0
# raidctl -c c0t0d0 c0t1d0
Cannot create RAID volume, disk "c0t0d0" is mounted .
What's the matter with c0t0d0? Does it mean that, if you break the mirror, it is impossible to re-create it, except reinstalling OS? This problem seems to appear only in T2000
thanks in advance,
gerard
[1285 byte] By [
latp2006a] at [2007-11-27 3:56:12]
# 1
Hello Gerard,
# raidctl -c c0t0d0 c0t1d0
Cannot create RAID volume, disk "c0t0d0" is mounted .
What's the matter with c0t0d0? Does it mean that, if you break the mirror, it is impossible to re-create it, except reinstalling OS? This problem seems to appear only in T2000.
As the error message clearly states, you can't mirror a disk after it is mounted.
Please review the following thread
http://forum.java.sun.com/thread.jspa?threadID=5165318
The poster didn't return. That's a pity and waste of time, but very common as you can see in the following thread
http://forum.java.sun.com/thread.jspa?threadID=5117369&messageID=9404322
I would recommend that you get Sun involved (maybe paid support) or carefully re-read the product documentation.
I agree that there has to be a procedure to replace a failed mirrored disk in a RAID volume without loosing the data.
Indeed there is a procedure. I took me just a few minutes to review the public documentation and locate the document:
[url=http://www.sun.com/products-n-solutions/hardware/docs/html/819-2549-12/ont ario-volume_man.html#37005]To Perform a Mirrored Disk Hot-Plug Operation[/url]
Michael
# 2
sorry for this late reply.
Yes, i paid support, and that was support that helps me to have a workaround to this problem.
To re-create RAID1 HW, i have to:-
- go to prompt ok
{0} ok 0 delete-volume
The volume and its data will be deleted
Are you sure (yes/no)? [no] yes
Volume 0 has been deleted
In my case, my data were not deleted!
- just re-create volumes:
select /pci@780/pci@0/pci@9/scsi@0
0 1 create-im-volume
this works for me, even it is not supported...
thanks for help,
gerard
