Veritas Volume Manager 4.1 Administrator's Guide (HP-UX 11i v3, February 2007)

Creating a Volume Using vxmake
220 VERITAS Volume Manager Administrator’s Guide
After creating a volume using vxmake, you must initialize it before it can be used. The
procedure is described in “Initializing and Starting a Volume” on page 221.
Creating a Volume Using a vxmake Description File
You can use the vxmake command to add a new volume, plex or subdisk to the set of
objects managed by VxVM. vxmake adds a record for each new object to the VxVM
configuration database. You can create records either by specifying parameters to vxmake
on the command line, or by using a file which contains plain-text descriptions of the
objects. The file can also contain commands for performing a list of tasks. Use the
following form of the command to have vxmake read the file from the standard input:
# vxmake [-g diskgroup] < description_file
Alternatively, you can specify the file to vxmake using the -d option:
# vxmake [-g diskgroup] -d description_file
The following sample description file defines a volume, db, with two plexes, db-01 and
db-02:
#rectyp #name #options
sd mydg03-01 disk=mydg03 offset=0 len=10000
sd mydg03-02 disk=mydg03 offset=25000 len=10480
sd mydg04-01 disk=mydg04 offset=0 len=8000
sd mydg04-02 disk=mydg04 offset=15000 len=8000
sd mydg04-03 disk=mydg04 offset=30000 len=4480
plex db-01 layout=STRIPE ncolumn=2 stwidth=16k
sd=mydg03-01:0/0,mydg03-02:0/10000,mydg04-01:1/0,
mydg04-02:1/8000,mydg04-03:1/16000
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
Note The subdisk definition for plex, db-01, must be specified on a single line. It is
shown here split across two lines because of space constraints.
The first plex, db-01, is striped and has five subdisks on two physical disks, mydg03 and
mydg04. 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.