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Special Forums Hardware How to identify virtual/physic disk path on X4100? Post 302768489 by sunnychen98 on Friday 8th of February 2013 04:21:41 PM
Old 02-08-2013
Hello,

The problem has been just resolved, but not as what we expected the way the problem should be resolved.

What we did was that we have found a similar structure server as spare, so our original idea was to shut down this spare server, boot to BIOS, check it's disk mirroring setting, pull one disk out, boot up to see the error message, then which might help us to determine which disk was the real bad one.

While local HW team told me they only saw 2 disks in X4100, I started to suspect there was no HW mirroring set-up, so we ran format->analyze->read on spare server, I intentionally picked c2t3d0 ( the one was bad on prod server ), after HW team confirmed they saw the blinking light while doing analyze, we decided to replace the disk on the problem server in the same slot.

After disk was hot-swap, "format", "prtvtoc /dev/rdsk/c2t3d0s2", "raidctl -l" all worked, then my suspicion raised : why I was seeing 2 disks in format? If it's HW mirroring, I should only see 1 disk in "format" ( since it's virtual to OS ).

Conclusion: the X4100 has 2 disks only and never been configured with HW mirroring.
 

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volrootmir(8)						      System Manager's Manual						     volrootmir(8)

NAME
volrootmir - Mirror areas necessary for booting to a new disk SYNOPSIS
/usr/sbin/volrootmir [-a] [nconfig=count] target_disk [swap=target_partition] OPTIONS
Specifies that all volumes on the system disk be mirrored, not just the root and swap volumes, rootvol and swapvol. DESCRIPTION
The volrootmir script causes a mirror copy of areas of the root disk involved in booting to be made on the specified target disk. When used without the -a option, volrootmir adds mirrors of the root and swap volumes and allocates them on the new disk. In addition, all disk regions required for booting are set up and partitions for the new volume mirrors are created. When used with the -a option, volrootmir mirrors all in-use partitions on the system disk. To mirror a swap volume that is on a separate disk from the root volume, the swap attribute must be used to specify a separate target for the swap mirror. The target disk(s) must be at least as large as the sum of the sizes of rootvol and swapvol. Also, the physical disk should not have any disk partition in use. This script can be called from the voldiskadm menus by choosing the Mirror volumes on a disk operation. ATTRIBUTES
Specifies the number of log copies and copies of the configuration database, for example, nconfig=2. Specifies that the swap volume, swapvol, be mirrored on a separate disk, as specified by target_partition. EXAMPLES
The following command mirrors the rootvol and swapvol volumes onto the target disk, dsk3. This command will fail if swapvol is on a differ- ent disk from rootvol. # volrootmir dsk3 The following command mirrors rootvol, swapvol, and any other volumes on the root disk onto the target disk, dsk3. This command will fail if swapvol is on a different disk from rootvol. # volrootmir -a dsk3 The following command mirrors rootvol on disk dsk3, swapvol onto partition dsk7d, and any other volumes on the root disk onto disk dsk3. This command will fail if swapvol is on the same disk as rootvol. # volrootmir -a dsk3 swap=dsk7d The following command mirrors rootvol onto disk dsk3 and swapvol onto partition dsk7d. This command will fail if swapvol is on the same disk as rootvol. # volrootmir dsk3 swap=dsk7d SEE ALSO
volintro(8), voldiskadm(8) volrootmir(8)
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