I have 2 StorEdge 3310 arrays, mirrored using Solaris9 SVM disksets ( the
arrays are also shared between 2 hosts ).

I have a need to break the mirror and do some work on one array, and do the
same on the other array. During that time, the SVM mirrors will only have 1
submirror.

How can I be sure that the metadevices that I am de-attaching and removing
from the diskset is from the correct 3310 that I need to work on ( remote
location ) ?

Using sccli, I have:

# /opt/SUNWsscs/sbin/sccli
Available devices:

1. /dev/rdsk/c3t0d0s2 [SUN StorEdge 3310 SN#000202] (Primary)
2. /dev/rdsk/c4t0d0s2 [SUN StorEdge 3310 SN#00094F] (Primary)

Please enter selection:


.... and the metadevices are on the following disks:

# metastat -s shared3310 -p | grep c
shared3310/d51 1 1 c3t0d4s0
shared3310/d52 1 1 c4t0d4s0
shared3310/d21 1 1 c3t0d3s0
shared3310/d22 1 1 c4t0d3s0
shared3310/d41 1 1 c3t0d2s0
shared3310/d42 1 1 c4t0d2s0
shared3310/d31 1 1 c3t0d1s0
shared3310/d32 1 1 c4t0d1s0
shared3310/d1 1 1 c3t0d0s0
shared3310/d2 1 1 c4t0d0s0


It seems obvious, but I want to make sure:

Is it a correct assumption that disks c3t0dxs0 above are in the 3310 array:
1. /dev/rdsk/c3t0d0s2 [SUN StorEdge 3310 SN#000202] (Primary)

... and disks c4t0dxs0 above are in the 3310 array:
2. /dev/rdsk/c4t0d0s2 [SUN StorEdge 3310 SN#00094F] (Primary)

??

Checking the device path for the disk array themselves:

# ls -alt /dev/rdsk/c3t0d0s2
lrwxrwxrwx 1 root root 52 Mar 1 2005 /dev/rdsk/c3t0d0s2
-> ../../devices/pci@8,600000/pci@1/scsi@4/sd@0,0:c,raw

# ls -alt /dev/rdsk/c4t0d0s2
lrwxrwxrwx 1 root root 52 Apr 5 2005 /dev/rdsk/c4t0d0s2
-> ../../devices/pci@8,600000/pci@1/scsi@5/sd@0,0:c,raw



Now for the actual disks that Solaris sees:

# ls -alt /dev/rdsk/c3t0d4s0
lrwxrwxrwx 1 root root 52 Mar 4 2005 /dev/rdsk/c3t0d4s0
-> ../../devices/pci@8,600000/pci@1/scsi@4/sd@0,4:a,raw

# ls -alt /dev/rdsk/c4t0d4s0
lrwxrwxrwx 1 root root 52 Apr 5 2005 /dev/rdsk/c4t0d4s0
-> ../../devices/pci@8,600000/pci@1/scsi@5/sd@0,4:a,raw



So the actual disk's device path seems to match the array's device path,
which leads me to conclude that disks c3t0dxs0 above are in the 3310 array:
1. /dev/rdsk/c3t0d0s2 [SUN StorEdge 3310 SN#000202] (Primary)

... and disks c4t0dxs0 above are in the 3310 array:
2. /dev/rdsk/c4t0d0s2 [SUN StorEdge 3310 SN#00094F] (Primary)



Am I correct in my assumption ??


Thanks,

John

js wrote:

>
> So the actual disk's device path seems to match the array's device path,
> which leads me to conclude that disks c3t0dxs0 above are in the 3310
> array:
> 1. /dev/rdsk/c3t0d0s2 [SUN StorEdge 3310 SN#000202] (Primary)
>
> .. and disks c4t0dxs0 above are in the 3310 array:
> 2. /dev/rdsk/c4t0d0s2 [SUN StorEdge 3310 SN#00094F] (Primary)
>
>
>
> Am I correct in my assumption ??
>
>
> Thanks,
>
> John

Jumped the gun ... it seems my assumption is correct.