再说mklvcopy 和 cplv 的区别
今天做个试验，结论如下：
mklvcopy 是在同一个vg 内 进行lv 的copy, 而cplv 可以在同一个vg ，也可以在另一个vg
先说一个cplv 的用法：cplv 2 vg_name lv
好，下面开始operation:
Step1:
Create one lv:
Add a Logical Volume
Type or select values in entry fields.
Press Enter AFTER making all desired changes.
[TOP] [Entry Fields]
Logical volume NAME [t_lv]
* VOLUME GROUP name rootvg
* Number of LOGICAL PARTITIONS [1] #
PHYSICAL VOLUME names [hdisk1] +
Logical volume TYPE [] +
POSITION on physical volume outer_middle +
RANGE of physical volumes minimum +
MAXIMUM NUMBER of PHYSICAL VOLUMES [] #
to use for allocation
Number of COPIES of each logical 1 +
partition
Mirror Write Consistency? active +
Allocate each logical partition copy yes +
on a SEPARATE physical volume?
RELOCATE the logical volume during reorganization? yes +
Logical volume LABEL []
MAXIMUM NUMBER of LOGICAL PARTITIONS [512] #
Enable BAD BLOCK relocation? yes +
SCHEDULING POLICY for writing/reading parallel +
logical partition copies
[MORE...4]
root@a05scpgapp01/>lsvg -l rootvg
rootvg:
LV NAME TYPE LPs PPs PVs LV STATE MOUNT POINT
hd5 boot 1 2 2 closed/syncd N/A
hd6 paging 54 54 2 open/syncd N/A
hd8 jfs2log 1 2 2 open/syncd N/A
hd4 jfs2 80 160 2 open/syncd /
hd2 jfs2 80 160 2 open/syncd /usr
hd9var jfs2 120 240 2 open/syncd /var
hd3 jfs2 40 80 2 open/syncd /tmp
hd1 jfs2 96 192 2 open/syncd /home
hd10opt jfs2 80 160 2 open/syncd /opt
fwdump jfs2 3 6 2 open/syncd /var/adm/ras/platform
dumplv sysdump 16 16 1 open/syncd N/A
t_lv jfs 1 1 1 closed/syncd N/A
step2:
relax the PP from hdisk0:
root@a05scpgapp01/>smit rmlvcopy
Remove Copies from a Logical Volume
Type or select values in entry fields.
Press Enter AFTER making all desired changes.
[Entry Fields]
* LOGICAL VOLUME name fwdump
* NEW maximum number of logical partition 1 +
copies
PHYSICAL VOLUME name(s) to remove copies from [hdisk0] +
step3:
check the result: success!
root@a05scpgapp01/>lsvg -l rootvg
rootvg:
LV NAME TYPE LPs PPs PVs LV STATE MOUNT POINT
hd5 boot 1 2 2 closed/syncd N/A
hd6 paging 54 54 2 open/syncd N/A
hd8 jfs2log 1 2 2 open/syncd N/A
hd4 jfs2 80 160 2 open/syncd /
hd2 jfs2 80 160 2 open/syncd /usr
hd9var jfs2 120 240 2 open/syncd /var
hd3 jfs2 40 80 2 open/syncd /tmp
hd1 jfs2 96 192 2 open/syncd /home
hd10opt jfs2 80 160 2 open/syncd /opt
fwdump jfs2 3 3 1 open/syncd /var/adm/ras/platform
dumplv sysdump 16 16 1 open/syncd N/A
t_lv jfs 1 1 1 closed/syncd N/A
Step4:
root@a05scpgapp01/>lslv -l fwdump
fwdump:/var/adm/ras/platform
PV COPIES IN BAND DISTRIBUTION
hdisk1 003:000:000 100% 000:003:000:000:000
root@a05scpgapp01/>lslv -l t_lv
t_lv:N/A
PV COPIES IN BAND DISTRIBUTION
hdisk1 001:000:000 0% 000:000:000:000:001
Step5:
Let us go to do the mklvcopy testing:
root@a05scpgapp01/>smit mklvcopy
Add Copies to a Logical Volume
Type or select values in entry fields.
Press Enter AFTER making all desired changes.
[Entry Fields]
* LOGICAL VOLUME name t_lv
* NEW TOTAL number of logical partition 2 +
copies
PHYSICAL VOLUME names [hdisk0] +
POSITION on physical volume outer_middle +
RANGE of physical volumes minimum +
MAXIMUM NUMBER of PHYSICAL VOLUMES [32] #
to use for allocation
Allocate each logical partition copy yes +
on a SEPARATE physical volume?
File containing ALLOCATION MAP []
SYNCHRONIZE the data in the new no +
logical partition copies?
COMMAND STATUS
Command: OK stdout: no stderr: no
Before command completion, additional instructions may appear below.
root@a05scpgapp01/>lsvg -l rootvg
rootvg:
LV NAME TYPE LPs PPs PVs LV STATE MOUNT POINT
hd5 boot 1 2 2 closed/syncd N/A
hd6 paging 54 54 2 open/syncd N/A
hd8 jfs2log 1 2 2 open/syncd N/A
hd4 jfs2 80 160 2 open/syncd /
hd2 jfs2 80 160 2 open/syncd /usr
hd9var jfs2 120 240 2 open/syncd /var
hd3 jfs2 40 80 2 open/syncd /tmp
hd1 jfs2 96 192 2 open/syncd /home
hd10opt jfs2 80 160 2 open/syncd /opt
fwdump jfs2 3 3 1 open/syncd /var/adm/ras/platform
dumplv sysdump 16 16 1 open/syncd N/A
t_lv jfs 1 2 2 closed/stale N/A
root@a05scpgapp01/>lslv -l t_lv
t_lv:N/A
PV COPIES IN BAND DISTRIBUTION
hdisk1 001:000:000 0% 000:000:000:000:001
hdisk0 001:000:000 100% 000:001:000:000:000