I have an update to this problem, it's not fixed yet - it's going to take a while to do that as the following explanation will show. So for any one who is interested I have identified the problem as incorrectly partitioned disks on the test server, the production and dr servers were built correctly with the disks sliced from cylinder 1 and Peasant hit the nail on the head - I hadn't checked that because the build document that I handed over did actually specify that the slice must start from Cylinder 1.
So on Production/DR we have;
Code:
Specify disk (enter its number)[11]: 12
selecting c0t600507680C8082780000000000000494d0
[disk formatted]
format> pa
PARTITION MENU:
0 - change `0' partition
1 - change `1' partition
2 - change `2' partition
3 - change `3' partition
4 - change `4' partition
5 - change `5' partition
6 - change `6' partition
7 - change `7' partition
select - select a predefined table
modify - modify a predefined partition table
name - name the current table
print - display the current table
label - write partition map and label to the disk
!<cmd> - execute <cmd>, then return
quit
partition> pr
Current partition table (original):
Total disk cylinders available: 38398 + 2 (reserved cylinders)
Part Tag Flag Cylinders Size Blocks
0 unassigned wm 1 - 38397 299.98GB (38397/0/0) 629096448
1 swap wu 0 0 (0/0/0) 0
2 backup wu 0 - 38397 299.98GB (38398/0/0) 629112832
3 unassigned wm 0 0 (0/0/0) 0
4 unassigned wm 0 0 (0/0/0) 0
5 unassigned wm 0 0 (0/0/0) 0
6 usr wm 0 0 (0/0/0) 0
7 unassigned wm 0 0 (0/0/0) 0
partition> quit
FORMAT MENU:
disk - select a disk
type - select (define) a disk type
partition - select (define) a partition table
current - describe the current disk
format - format and analyze the disk
repair - repair a defective sector
label - write label to the disk
analyze - surface analysis
defect - defect list management
backup - search for backup labels
verify - read and display labels
save - save new disk/partition definitions
inquiry - show disk ID
scsi - independent SCSI mode selects
cache - enable, disable or query SCSI disk cache
volname - set 8-character volume name
!<cmd> - execute <cmd>, then return
quit
format> quit
root@fvssphsun01:~#
And on the Test Server we have;
Code:
Specify disk (enter its number)[18]: 20
selecting c0t60050768018086B6E80000000000045Bd0
[disk formatted]
Disk not labeled. Label it now? no
format> pa
PARTITION MENU:
0 - change `0' partition
1 - change `1' partition
2 - change `2' partition
3 - change `3' partition
4 - change `4' partition
5 - change `5' partition
6 - change `6' partition
7 - change `7' partition
select - select a predefined table
modify - modify a predefined partition table
name - name the current table
print - display the current table
label - write partition map and label to the disk
!<cmd> - execute <cmd>, then return
quit
partition> pr
Current partition table (default):
Total disk cylinders available: 38398 + 2 (reserved cylinders)
Part Tag Flag Cylinders Size Blocks
0 root wm 0 - 15 128.00MB (16/0/0) 262144
1 swap wu 16 - 31 128.00MB (16/0/0) 262144
2 backup wu 0 - 38397 299.98GB (38398/0/0) 629112832
3 unassigned wm 0 0 (0/0/0) 0
4 unassigned wm 0 0 (0/0/0) 0
5 unassigned wm 0 0 (0/0/0) 0
6 usr wm 32 - 38397 299.73GB (38366/0/0) 628588544
7 unassigned wm 0 0 (0/0/0) 0
partition> quit
FORMAT MENU:
disk - select a disk
type - select (define) a disk type
partition - select (define) a partition table
current - describe the current disk
format - format and analyze the disk
repair - repair a defective sector
label - write label to the disk
analyze - surface analysis
defect - defect list management
backup - search for backup labels
verify - read and display labels
save - save new disk/partition definitions
inquiry - show disk ID
scsi - independent SCSI mode selects
cache - enable, disable or query SCSI disk cache
volname - set 8-character volume name
!<cmd> - execute <cmd>, then return
quit
format> current
Current Disk = c0t60050768018086B6E80000000000045Bd0
<IBM-2145-0000 cyl 38398 alt 2 hd 64 sec 256>
/scsi_vhci/ssd@g60050768018086b6e80000000000045b
format> verify
Warning: Could not read primary label.
Warning: Check the current partitioning and 'label' the disk or use the
'backup' command.
Backup label contents:
Volume name = < >
ascii name = <IBM-2145-0000 cyl 38398 alt 2 hd 64 sec 256>
pcyl = 38400
ncyl = 38398
acyl = 2
nhead = 64
nsect = 256
Part Tag Flag Cylinders Size Blocks
0 unassigned wm 0 - 38397 299.98GB (38398/0/0) 629112832
1 unassigned wu 0 0 (0/0/0) 0
2 backup wu 0 - 38397 299.98GB (38398/0/0) 629112832
3 unassigned wm 0 0 (0/0/0) 0
4 unassigned wm 0 0 (0/0/0) 0
5 unassigned wm 0 0 (0/0/0) 0
6 unassigned wm 0 0 (0/0/0) 0
7 unassigned wm 0 0 (0/0/0) 0
format>
As you may be able to gather from the above, the disk on the test server has lost it's primary label - which has been over written by ASM. The original backup label is still there as displayed by the verify command output.
I attempted to duplicate these disks to a set of files in a zpool, where I was going to work on them - but attempting to dd the disks was a problem even using the raw devices.
I have spoken with a couple of people and the general consensus is that this situation is non recoverable, but I have a couple of other things to try - I'll be familiarising myself with some low level stuff that I haven't worked with for years. So if I do manage to resolve the problem I'll let you all know.
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