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
:
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
vol db usetype=gen plex=db-01,db-02
comment="Uses mem1 for hot spot in last 5m
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.
After creating a volume using vxmake
, you must initialize it before it can be used.
See "Initializing and starting a volume created using vxmake" on page 271.