Step 1. Detach the swap partition (submirror) on the secondary disk.
metadetach d1 d21 #where d1 is the metadevice and d21 is the submirror
d1: submirror d21 is detached
metaclear d21
d21: Concat/Stripe is cleared
Step 2. Format Secondary Disk (c1t1d1 in this example)
Below is the partition table of the disk that I am working with. Slice one will be resized using unallocated disk space. Add 1 to the last cylinder of slice 7 to determine your starting cylinder. In this case my new starting cylinder is 2691.
Total disk cylinders available: 14087 + 2 (reserved cylinders)
Part Tag Flag Cylinders Size Blocks
0 root wm 0 - 824 4.00GB (825/0/0) 8395200
1 swap wu 825 - 1031 1.00GB (207/0/0) 2106432
2 backup wm 0 - 14086 68.35GB (14087/0/0) 143349312
3 unassigned wm 1032 - 1038 34.78MB (7/0/0) 71232
4 var wm 1039 - 1657 3.00GB (619/0/0) 6298944
5 home wm 1658 - 2070 2.00GB (413/0/0) 4202688
6 stand wm 2071 - 2277 1.00GB (207/0/0) 2106432
7 stand wm 2278 - 2690 2.00GB (413/0/0) 4202688
Now resize the partition, in this case I am going to use the rest of the disk, which according to the information for partition two, ends @ cylinder 14087. Subtract 2691 from 14087, to determine how many cylinders your slice is going to be.
Enter partition id tag[swap]:
Enter partition permission flags[wu]:
Enter new starting cyl[825]: 2691
Enter partition size[2106432b, 207c, 1028.53mb, 1.00gb]: 11396c
Save this partition scheme
partition> name
Enter table name (remember quotes): my_table
Then label disk
Now my swap partition is huge.
Part Tag Flag Cylinders Size Blocks
0 root wm 0 - 824 4.00GB (825/0/0) 8395200
1 swap wu 2691 - 14086 55.30GB (11396/0/0) 115965696
2 backup wm 0 - 14086 68.35GB (14087/0/0) 143349312
3 unassigned wm 1032 - 1038 34.78MB (7/0/0) 71232
4 var wm 1039 - 1657 3.00GB (619/0/0) 6298944
5 home wm 1658 - 2070 2.00GB (413/0/0) 4202688
6 stand wm 2071 - 2277 1.00GB (207/0/0) 2106432
7 stand wm 2278 - 2690 2.00GB (413/0/0) 4202688
Step 3. Swap Swap
Reinitialize swap submirror.
metainit d21
d21: Concat/Stripe is setup
Add swap to new submirror
swap -a /dev/md/dsk/d21
View swap
swap -l
swapfile dev swaplo blocks free
/dev/md/dsk/d1 85,1 16 2106416 2106416
/dev/md/dsk/d21 85,21 16 115965680 115965680
Remove the metadevice from swap
swap -d /dev/md/dsk/d1
Verify that previous step worked
swap -l
swapfile dev swaplo blocks free
/dev/md/dsk/d21 85,21 16 115965680 115965680
Clear Metadevice/Mirror
metaclear d1
Mirror is cleared
Clear Metadevice/submirror
metaclear d11
d11: Concat/Stripe is cleared
Step 4.Format Primary Disk (c1t1d0 in this example)
Select a predefined table
partition> select
0. original
1. my_table
Specify table (enter its number)[0]: 1
View the partition table, and make sure it looks right.
Total disk cylinders available: 14087 + 2 (reserved cylinders)
Part Tag Flag Cylinders Size Blocks
0 root wm 0 - 824 4.00GB (825/0/0) 8395200
1 swap wu 2691 - 14086 55.30GB (11396/0/0) 115965696
2 backup wm 0 - 14086 68.35GB (14087/0/0) 143349312
3 unassigned wm 1032 - 1038 34.78MB (7/0/0) 71232
4 var wm 1039 - 1657 3.00GB (619/0/0) 6298944
5 home wm 1658 - 2070 2.00GB (413/0/0) 4202688
6 stand wm 2071 - 2277 1.00GB (207/0/0) 2106432
7 stand wm 2278 - 2690 2.00GB (413/0/0) 4202688
Label disk
partition> label
Ready to label disk, continue? y
Step 5. Put things back the way they were
Reinitialize the swap submirror on the primary disk
metainit d11
d11: Concat/Stripe is setup
Reinitialize Metadevice Mirror
metainit d1
d1: Mirror is setup
Add the metadevice to swap
swap -a /dev/md/dsk/d1
... and verify that it took
swap -l
swapfile dev swaplo blocks free
/dev/md/dsk/d21 85,21 16 115965680 115965680
/dev/md/dsk/d1 85,1 16 115965680 115965680
Remove the submirror that you added to swap in Step 3 above
swap -d /dev/md/dsk/d21
Reattach Submirror d21 to Mirror d1
metattach d1 d21
d1: submirror d21 is attached
Redefine dump device
dumpadm -d swap
Dump content: kernel pages
Dump device: /dev/md/dsk/d1 (swap)
Savecore directory: /var/crash/blahblah
Savecore enabled: yes
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