is smit rmlvcopy destructive?

From: gprimerib (hmprimerib_at_hotmail.com)
Date: 02/25/05 

Date: 25 Feb 2005 11:14:44 -0800

I'll be patching this weekend and based on kind advice from this
group's users, I plan on breaking the boot (on rootvg) mirror so I have
something to fall back on if it blows up after adding ML 11.

Is smit rmlvcopy desctructive? Can I go back to the hdisk1 if hdisk0
is unhappy after the patching?

Or should I just do this:

 rmlvcopy hd5 1

Which would just be for my boot partition:
# 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 32 64 2 open/syncd N/A
hd8 jfslog 1 2 2 open/syncd N/A
hd4 jfs 6 12 2 open/syncd /
hd2 jfs 98 196 2 open/syncd /usr
hd9var jfs 24 48 2 open/syncd /var
hd3 jfs 6 12 2 open/syncd /tmp
hd1 jfs 45 90 2 open/syncd /home

Thanks in advance
DM

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