I'm newbie in ZFS, and have question:
how to convert ZFS formated disk back to tradistional Sun disk ?
ZFS formated disk:
# prtvtoc /dev/rdsk/c3t0d0s2
* /dev/rdsk/c3t0d0s2 partition map
*
* Dimensions:
* 512 bytes/sector
* 17689267 sectors
* 17689200 accessible sectors
*
* Flags:
* 1: unmountable
* 10: read-only
*
* First Sector Last
* Partition Tag Flags Sector Count Sector Mount Directory
0 4 00 34 17672816 17672849
8 11 00 17672850 16384 17689233
partition> p
Current partition table (original):
Total disk sectors available: 17672849 + 16384 (reserved sectors)
Part Tag Flag First Sector Size Last Sector
0 usr wm 34 8.43GB 17672849
1 unassigned wm 0 0 0
2 unassigned wm 0 0 0
3 unassigned wm 0 0 0
4 unassigned wm 0 0 0
5 unassigned wm 0 0 0
6 unassigned wm 0 0 0
8 reserved wm 17672850 8.00MB 17689233
partition>
from above vtoc, ZFS created partition 8, deleted partition 7, partition 2
is zeroed.
now to convert it back so it can be used by other file systems, such as UFS ?
I tried "type" option from format cmd, it create the following vtoc:
format> type
AVAILABLE DRIVE TYPES:
0. Auto configure
1. other
Specify disk type (enter its number)[1]: 0
c3t0d0: configured with capacity of 8.43GB
<FUJITSU-MAG3091L SUN9.0G-1111-8.43GB>
selecting c3t0d0
[disk formatted]
format> p
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
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> p
Current partition table (default):
Total disk sectors available: 17672849 + 16384 (reserved sectors)
Part Tag Flag First Sector Size Last Sector
0 root wm 34 128.00MB 262177
1 swap wu 262178 128.00MB 524321
2 unassigned wu 0 0 0
3 unassigned wm 0 0 0
4 unassigned wm 0 0 0
5 unassigned wm 0 0 0
6 usr wm 524322 8.18GB 17672848
8 reserved wm 17672849 8.00MB 17689232
partition>
# prtvtoc /dev/rdsk/c3t0d0s2
* /dev/rdsk/c3t0d0s2 partition map
*
* Dimensions:
* 512 bytes/sector
* 17689267 sectors
* 17689200 accessible sectors
*
* Flags:
* 1: unmountable
* 10: read-only
*
* First Sector Last
* Partition Tag Flags Sector Count Sector Mount Directory
0 2 00 34 262144 262177
1 3 01 262178 262144 524321
6 4 00 524322 17148527 17672848
8 11 00 17672849 16384 17689232
#
so does that means that partition 8 is the whole disk now (the same like the
partition 2 on the tradition disk ?
I also tried fmthard cmd by copying other disk's vtoc to this disk but failed
wtih return code of 1:
# prtvtoc /dev/rdsk/c3t1d0s2 | fmthard -s - /dev/rdsk/c3t0d0s2
fmthard: Partition 0 overlaps partition 2. Overlap is allowed
only on partition on the full disk partition).
#
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