/usr/sbin/vxdg– Unix Arena’s Manual page.
Product – Veritas Volume Manager-vxvm (Storage Foundation)
/usr/sbin/vxdg – The vxdg utility performs administrative operations on disk groups.
System-Wide Reserved Disk Groups
bootdg – Specifies the boot disk group – Default is nodg
Caution: Do not attempt to change the value of bootdg. You may render your system unbootable.
defaultdg – Specifies the default disk group to use if the -g option is not specified -Default is nodg
nodg – Specifies to an operation that no disk group has been defined
Tasks |
Switches |
| Creating Disk Groups | vxdg [-s] init diskgroup [diskname=]devicename … |
| Creating Older Versions of Disk Groups | vxdg -T [dg_version] init diskgroup [diskname=]devicename … |
| Creating Disk Group with Specific Minor Number | vxdg init diskgroup [minor=minor_no] [diskname=]devicename … |
| Creating Sliced format Disk Group | vxdg init diskgroup cds=off [diskname=]devicename … |
| List & Viewing Available Disk Groups Information | vxdg list [disk_group] |
| Changing Minor number of a Disk Group | vxdg [-g diskgroup] [-f] reminor [diskgroup] new-minor-number |
| Adding Disk’s to Existing Disk Group | vxdg [-g diskgroup] adddisk [diskname=]devicename … |
| Removing Disk’s from Existing Disk Group | vxdg [-g diskgroup] rmdisk diskname … |
| View Default Disk Group | vxdg defaultdg |
| View the free Space in Disk Group | vxdg -g diskgroup free |
| Deport Disk Group | vxdg [-n newname] [-h newhostid] deport diskgroup |
| Import Disk Group | vxdg [-C] [-f] [-n new_name] import diskgroup |
| Move Disk from one Disk Group to Another | vxdg [-f] [-o expand] move src_diskgroup dst_diskgroup diskname |
| Move Volume from one Disk Group to Another | vxdg move src_diskgroup dst_diskgroup volume |
| Split the Disk Group | vxdg [-f] [-o expand] split src_diskgroup dst_diskgroup objects |
| Join the Disk Group | vxdg [-f] join src_diskgroup dst_diskgroup |
| Upgrading Disk Groups to Specific or latest Version | vxdg [-T version] upgrade diskgroup |
| Destroy the Disk Group | vxdg destroy diskgroup |
vxdg command line Examples:
Note:
Diskgroup name – oradg
Disks name – oradisk01 oradisk02 oradisk03
Creating Disk Group:
#vxdg init oradg oradisk01=c3t1d0s2 oradisk02=c3t2d0s2 oradisk03=c3t3d0s2
Creating Disk Group with specific minor number and diskgroup version number:
# vxdg -T 180 init oradg minor=20001 oradisk01=c3t1d0s2 oradisk02=c3t2d0s2 oradisk03=c3t3d0s2
Creating Sliced format Disk Group:
# vxdg init appsdg cds=off c4t1d0 c4t2d0
To View Disk Group Information’s
# vxdg list NAME STATE ID oradg enabled,cds 1408692754.17.vxserver1 appsdg enabled 1408693306.24.vxserver1
# vxdg list oradg Group: oradg dgid: 1408692754.17.vxserver1 import-id: 1024.16 flags: cds version: 180 alignment: 8192 (bytes) ssb: on autotagging: on detach-policy: global dg-fail-policy: obsolete ioship: off copies: nconfig=default nlog=default config: seqno=0.1029 permlen=48144 free=48139 templen=2 loglen=7296 config disk c3t1d0s2 copy 1 len=48144 state=clean online config disk c3t2d0s2 copy 1 len=48144 state=clean online config disk c3t3d0s2 copy 1 len=48144 state=clean online log disk c3t1d0s2 copy 1 len=7296 log disk c3t2d0s2 copy 1 len=7296 log disk c3t3d0s2 copy 1 len=7296
To get the minor number of the diskgroup
# vxprint -l oradg | grep minor minors: >= 20001
To get the free space of the diskgroup disks:
vxdg -g oradg free DISK DEVICE TAG OFFSET LENGTH FLAGS oradisk01 c3t1d0s2 c3t1d0 0 2031232 - oradisk02 c3t2d0s2 c3t2d0 0 2031232 - oradisk03 c3t3d0s2 c3t3d0 0 2031232 -
Changing Minor number of a Disk Group:
# vxdg -g oradg reminor 10001
Adding Disk’s to Existing Disk Group:
# vxdg -g oradg adddisk oradisk04=c3t4d0s2 oradisk05=c3t5d0s2 oradisk06=c3t6d0s2
Removing Disk’s from Existing Disk Group:
# vxdg -g oradg rmdisk oradisk06
Viewing Default Disk Group:
# vxdg defaultdg oradg
Re-naming the diskgroup:
# vxdg -n testdg deport oradg
testdg is the new name.
Move Disk from one Disk Group to Another
# vxdg -o expand move oradg appsdg oradisk06
Move Volume from one Disk Group to Another:
• Actually it moves the corresponding disks from one disk Group to another.
# vxdg move oradg appsdg oravol
Splitting & Joining Disk Group:
# vxdg -o expand split oradg1 oradg2 oradisk04 oradisk05 oradisk06 # vxdg join oradg2 oradg1
Viewing the diskgroup version:
# vxdg list appsdg | grep version version: 140
Upgrade DG to specific version:
# vxdg -T 160 upgrade appsdg # vxdg list appsdg | grep version version: 160
Upgrade DG to Latest Version available:
# vxdg upgrade appsdg # vxdg list appsdg | grep version version: 180
To Destroy the Disk Group:
# vxdg destroy oradg1
Note:Use vxdg destroy with extreme caution, and make sure the disk group doesn’t have any online filesystem’s.