[prev in list] [next in list] [prev in thread] [next in thread] 

List:       opensolaris-lvm-discuss
Subject:    Re: [lvm-discuss] DeviceID Strangeness
From:       Peter Dennis - Solaris Sustaining Engineering <peter.dennis () sun ! com>
Date:       2007-07-05 8:57:48
Message-ID: 468CB28C.5040604 () sun ! com
[Download RAW message or body]

Hi Steve,

This is not going to be an SVM problem as such, in that SVM will be 
looking for the devid of c1t4d0 that was being used prior to the
reboot.

It almost sounds like you've had the underlying device configuration
change while you are doing the reboot. Sounds like you have a dual
pathed disk (c1t2d0 and c1t4d0 are actually the same disk - can
you verify that - making a change to the disk using format maybe).

Cheers
pete

Steven Stallion wrote:
> All,
> 
> Recently, I have migrated a working ZFS system using 5 Hitachi SATA 160G drives \
> over to SVM. I am on a fully patched Solaris 10 11/06 system. 
> I can successfully create and resync a mirror (d20) using c1t2d0s0 (d21) and \
> c1t4d0s0 (d22). I can also create my state database replica's with no problems (2 \
> on each disk on slice 7). 
> Once I reboot the system, something quite strange happens: c1t4d0 clones c1t2d0's \
> Device ID. This has happened on two disks now (originally the d22 was on c1t3d0s0), \
> both of which had unique device id's before the mirror and reboot. 
> Any ideas?
> 
> Steve
> 
> (interesting output below)
> 
> # iostat -iE
> sd2       Soft Errors: 14 Hard Errors: 0 Transport Errors: 0
> Vendor: ATA      Product: HDT722516DLA380  Revision: A9BA Device Id: \
>                 id1,sd@f2241f2f6467f2ec1000b5d63000a
> Size: 164.70GB <164696555008 bytes>
> Media Error: 0 Device Not Ready: 0 No Device: 0 Recoverable: 0
> Illegal Request: 14 Predictive Failure Analysis: 0
> sd4       Soft Errors: 4 Hard Errors: 0 Transport Errors: 0
> Vendor: ATA      Product: HDT722516DLA380  Revision: A9BA Device Id: \
>                 id1,sd@f2241f2f6467f2ec1000b5d63000a
> Size: 164.70GB <164696555008 bytes>
> Media Error: 0 Device Not Ready: 0 No Device: 0 Recoverable: 0
> Illegal Request: 4 Predictive Failure Analysis: 0
> 
> # metastat (after reboot)
> d20: Mirror
> Submirror 0: d21
> State: Okay
> Submirror 1: d22
> State: Needs maintenance
> Pass: 1
> Read option: geometric (-g)
> Write option: parallel (default)
> Size: 321540975 blocks (153 GB)
> 
> d21: Submirror of d20
> State: Okay
> Size: 321540975 blocks (153 GB)
> Stripe 0:
> Device     Start Block  Dbase        State Reloc Hot Spare
> c1t2d0s0          0     No            Okay   Yes
> 
> 
> d22: Submirror of d20
> State: Needs maintenance
> Invoke: metareplace d20 c1t4d0s0 <new device>
> Size: 321540975 blocks (153 GB)
> Stripe 0:
> Device     Start Block  Dbase        State Reloc Hot Spare
> c1t4d0s0          0     No     Maintenance   Yes
> 
> 
> Device Relocation Information:
> Device   Reloc  Device ID
> c1t2d0   Yes    id1,sd@f2241f2f6467f2ec1000b5d63000a
> 
> 
> This message posted from opensolaris.org
> _______________________________________________
> lvm-discuss mailing list
> lvm-discuss@opensolaris.org
_______________________________________________
lvm-discuss mailing list
lvm-discuss@opensolaris.org


[prev in list] [next in list] [prev in thread] [next in thread]