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Disk controller reassignment

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Operating Systems Solaris Disk controller reassignment
# 8  
Old 06-08-2013
Speaking from the experience with Netra T4-2: when you configure hardware RAID, the resulting disk in "format" contains "LSI" in its name, which is not the case here. Also, when two disks are hardware-mirrored, they are visible as single disk in Solaris, so there would be 7 disks visible here and not 8.
# 9  
Old 06-08-2013
@bartus11....I agree with you but what possible explanation is there for Solaris to decide to mirror a 300GB drive to a 600GB drive, all on its own on a new build???

How does that possibly work???

The only way that I can think of is a pre-existing hardware RAID configuration.
# 10  
Old 06-08-2013
To understand the situation, we should first get the output of
Code:
zpool status
metastat -a

# 11  
Old 06-08-2013
Is raidctl works on that platform?
If yes, then it could be helpful too.
# 12  
Old 06-09-2013
@GP81.....

I don't think 'raidctl' will work on a T4-1. Raidctl is for the older built-in LSI hardware raid controllers used on hardware like the T2000.

If it was a LSI like that, then as Bartus11 says, once a raid mirror is configured the mirror drive is 'hidden' from view.

This is a T4-1 which uses a different raid controller and different command set.......

Create a Hardware RAID Volume - SPARC T4-1 Server HTML Document Collection

I've already made the point that typical factory configurations have the first two slots mirrored when supplied to the customer and this appears to be what we've got here.

We've got to the point where several members are trying to help and speculating over the resolution of the problem but what we need is Kerrygold to post more output.

I agree with Bartus11 that we all wait for Kerrygold to get back online otherwise we are all just guessing.

My own experience with T4 series is pretty thin anyway.
# 13  
Old 06-10-2013
Hi,

Thanks for the help so far.
The problem is seen just after the solaris is installed (it tries to create the root mirror on the 600gb disk instead of the 300gb)

the output of metastat is:
Code:
# metastat d0
d0: Mirror
    Submirror 0: d10
      State: Okay         
    Submirror 1: d20
      State: Resyncing    
    Resync in progress: 0 % done
    Pass: 1
    Read option: roundrobin (default)
    Write option: parallel (default)
    Size: 542925000 blocks (258 GB)

d10: Submirror of d0
    State: Okay         
    Hot spare pool: hsp001
    Size: 542925000 blocks (258 GB)
    Stripe 0:
        Device                             Start Block  Dbase        State Reloc Hot Spare
        /dev/dsk/c0t5000CCA03C3B0B70d0s0          0     No            Okay   Yes 


d20: Submirror of d0
    State: Resyncing    
    Hot spare pool: hsp001
    Size: 1048576968 blocks (500 GB)
    Stripe 0:
        Device                             Start Block  Dbase        State Reloc Hot Spare
        /dev/dsk/c0t5000CCA03C3F98F8d0s0          0     No            Okay   Yes 


Device Relocation Information:
Device                           Reloc  Device ID
/dev/dsk/c0t5000CCA03C3B0B70d0   Yes    id1,sd@n5000cca03c3b0b70
/dev/dsk/c0t5000CCA03C3F98F8d0   Yes    id1,sd@n5000cca03c3f98f8
#

I will try to break mirrors manually with raid tools and see what i can do...
# 14  
Old 06-10-2013
Personally I've never seen a Solaris install routine set up a mirror all on its own. Okay, I guess you learn something new every day!!!

However, the metastat output confirms that is what it's done so, as you say, you can break the mirror and remake the mirror with a different drive using the tools. Give it a go.
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