VERITAS Volume Manager 4.1 Administrator's Guide

Creating Volumes
Creating a Volume Using vxmake
Chapter 7 257
# vxmake -d description_file
The following sample description file defines a volume, db, with two
plexes:
#rectyp #name #options
sd disk3-01 disk=disk3 offset=0 len=10000
sd disk3-02 disk=disk3 offset=25000 len=10480
sd disk4-01 disk=disk4 offset=0 len=8000
sd disk4-02 disk=disk4 offset=15000 len=8000
sd disk4-03 disk=disk4 offset=30000 len=4480
plex db-01 layout=STRIPE ncolumn=2 stwidth=16k
sd=disk3-01:0/0,disk3-02:0/10000,disk4-01:1/0,
disk4-02:1/8000,disk4-03:1/16000
sd ramd1-01 disk=ramd1 len=640
comment=”Hot spot for dbvol
plex db-02 sd=ramd1-01:40320
vol db usetype=gen plex=db-01,db-02
readpol=prefer prefname=db-02
comment=”Uses mem1 for hot spot in last 5m
The first plex, db-01, is striped and has five subdisks on two physical
disks, disk3 and disk4. The second plex, db-02, is the preferred plex in
the mirror, and has one subdisk, ramd1-01, on a volatile memory disk.
For detailed information about how to use vxmake, refer to the
vxmake(1M) manual page.
After creating a volume using vxmake, you must initialize it before it can
be used. The procedure is described in the following section, “Initializing
and Starting a Volume” on page 258