VxVM is already installed on the
machine and below procedure will describe adding disk to VERITAS volume manager
and provisioning storage for usage. In this scenario attached disks
are local SCSI disks.
Procedure:
1) List the available disk using vxdisk command.
[root@node1 /]# vxdisk list
DEVICE TYPE DISK GROUP STATUS
sda auto:none - - online
invalid
sdb auto:LVM - - LVM
sdc auto:none - - online
invalid
sdd auto:none - - online
invalid
sde auto:none - - online
invalid
sdf auto:none - - online
invalid
sdg auto:none - - online
invalid
[root@node1 /]#
Note:
online invalid in the STATUS line indicates
that a disk has yet to be added or initialized for VxVM control.
2) Initialize the disks using vxdisksetup command.
[root@node1 /]# vxdisksetup -i sdc
[root@node1 /]# vxdisksetup -i sdd
3) Verify that disks are got
initialized using vxdisk command.
[root@node1 /]# vxdisk list
DEVICE TYPE DISK GROUP STATUS
sda auto:none - - online
invalid
sdb auto:LVM - - LVM
sdc auto:cdsdisk - - online
sdd auto:cdsdisk - - online
sde auto:none - - online
invalid
sdf auto:none - - online
invalid
[root@node1 /]#
Note:
Disks that are listed as online are initialized
and the part of VxVM.
4) Add the desired disk to disk group
using vxdg command. In this scenario we are creating disk group named ITOCDG and
adding disk sdc to diskgroup.
[root@node1 /]# vxdg init ITOCDG disk1=sdc
[root@node1 /]# vxdisk list
DEVICE TYPE DISK GROUP STATUS
sda auto:none - - online
invalid
sdb auto:LVM - - LVM
sdc auto:cdsdisk disk1 ITOCDG online
sdd auto:cdsdisk - - online
sde auto:none - - online
invalid
sdf auto:none - - online
invalid
[root@node1 /]#
Note :
we can use vxdg with adddisk switch to
add new disks to disk group.
[root@node1 /]# vxdg -g ITOCDG adddisk disk2=sdd
[root@node1 /]# vxdisk list
DEVICE TYPE DISK GROUP STATUS
sda auto:none - - online
invalid
sdb auto:LVM - - LVM
sdc auto:cdsdisk disk1 ITOCDG online
sdd auto:cdsdisk disk2 ITOCDG online
sde auto:none - - online
invalid
sdf auto:none - - online
invalid
[root@node1 /]#
5) To list disk group properties we
can use following command.
[root@node1 /]# vxdg list ITOCDG
Group: ITOCDG
dgid: 1334435551.48.node1.redhat.com
import-id: 1024.47
flags: cds
version: 170
alignment: 8192 (bytes)
ssb: on
autotagging: on
detach-policy: global
dg-fail-policy: obsolete
copies: nconfig=default nlog=default
config: seqno=0.1030 permlen=51360
free=51356 templen=2 loglen=4096
config disk sdc copy 1 len=51360 state=clean online
config disk sdd copy 1 len=51360 state=clean online
log disk sdc copy 1 len=4096
log disk sdd copy 1 len=4096
[root@node1 /]#
6) Create volume on the disk
group with desired size. In this example we are creating volume VOL1 with
size 100MB
[root@node1 /]# vxassist -g ITOCDG make VOL1 100m
7) To list volume details we can use vxlist volume
command
[root@node1 /]# vxlist volume
TY VOLUME DISKGROUP SIZE
STATUS LAYOUT LINKAGE
vol VOL1 ITOCDG 100.00m
healthy concat -
8) Create file system on the volume
using mkfs command, in this example we are creating VXFS file
system
[root@node1 /]# mkfs -t vxfs /dev/vx/rdsk/ITOCDG/VOL1
version 9 layout
204800 sectors, 102400 blocks of
size 1024, log size 1024 blocks
rcq size 1024 blocks
largefiles supported
Note :
/dev/vx/rdsk/ITOCDG/VOL1 is the device file for volume VOL1.
For verifying file system we can use fstyp command.
[root@node1 /]# fstyp /dev/vx/dsk/ITOCDG/VOL1
9) Create a mount point and mount the
file system using mount command.
[root@node1 /]# mkdir /veritas1
[root@node1 /]# mount -t vxfs /dev/vx/dsk/ITOCDG/VOL1
/veritas1/
10) Verify the mounted file system using mount command
or df command
[root@node1 /]# mount
/dev/mapper/vg_node1-lv_root on / type ext4 (rw)
proc on /proc type proc (rw)
sysfs on /sys type sysfs (rw)
devpts on /dev/pts type devpts (rw,gid=5,mode=620)
tmpfs on /dev/shm type tmpfs (rw,rootcontext="system_u:object_r:tmpfs_t:s0")
/dev/sda1 on /boot type ext4 (rw)
none on /proc/sys/fs/binfmt_misc type binfmt_misc (rw)
sunrpc on /var/lib/nfs/rpc_pipefs type rpc_pipefs (rw)
none on /dev/odm type vxodmfs (rw,smartsync)
/dev/sr0 on /repo type iso9660 (ro)
/dev/sr1 on /media/201204090917 type iso9660
(ro,nosuid,nodev,uhelper=udisks,uid=0,gid=0,iocharset=utf8 ,mode=0400,dmode=0500)
/dev/vx/dsk/ITOCDG/VOL1 on /veritas1 type vxfs (rw,
delaylog, largefiles,ioerror=mwdisable)
Note:
df displays the amount of disk space available on the
file system .
[root@node1 /]# df -h
Filesystem Size Used
Avail Use% Mounted on
/dev/mapper/vg_node1-lv_root
8.5G 4.5G 3.6G 57%
/
tmpfs 499M 208K 499M 1%
/dev/shm
/dev/sda1 485M 32M 429M 7%
/boot
/dev/sr0 3.4G 3.4G 0
100% /repo
/dev/sr1 927M 927M 0
100% /media/201204090917
/dev/vx/dsk/ITOCDG/VOL1
100M 3.2M 91M 4%
/veritas1
[root@node1 /]#
