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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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info(4) 						     Kernel Interfaces Manual							   info(4)

NAME
info - diskless client configuration information file DESCRIPTION
The file is a POSIX shell sourceable file which contains parameter definitions used at boot time. Typically, it will be an empty file and default values will be used for all parameters. Following is the list of parameters which can be defined in the file: Specifies the IP address of the client's private root server. If this is not specified, the client's private root server defaults to the boot server. Specifies the pathname to the client's private root on the private root server. If this is not specified, the client's private root path defaults to Specifies the NFS mount options to mount the client's private root from the private root server. If this is not specified, the mount options default to Specifies the NFS mount options to mount the client's directory from the boot server. If this is not specified, the mount options default to Specifies whether NFS should be configured as primary swap. (NOTE: In order to swap to NFS, a diskless kernel must be configured with tunable parameter set to 1.) If a diskless machine has a local swap disk and swap to NFS is not desired, the parameter should be set to the value of 1 and the diskless kernel should be configured without setting to 1. If this parameter is not specified in the file and the kernel tunable parameter is set to 1, then NFS will be configured as primary swap. If not set, this parameter defaults to a value of 1, and results in the removal of all swapfiles above the configured swap minimum (swap is specified in the client's when a disk- less client boots. This ensures that extraneous swapfiles at boot time are removed, thus freeing disk space. If is set to 0 in the file, removal of extra swapfiles is disabled. This may result in faster boot times due to the time savings in creating additional swap files. The file resides in the same directory as the client's kernel () on the boot server and is retrieved at boot time using command. By default, when a diskless client is created, an empty file is placed in the client's kernel directory. This ensures that all parameters revert to their default values (see above). If the file is not present, this is an error. EXAMPLES
An example file is shown below: FILES
info(4)
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