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Veritas™ Volume Manager Administrator's Guide
Last Published:
2018-11-02
Product(s):
InfoScale & Storage Foundation (5.1 SP1)
Platform: HP-UX
- Understanding Veritas Volume Manager
- VxVM and the operating system
- How VxVM handles storage management
- Volume layouts in VxVM
- Online relayout
- Volume resynchronization
- Dirty region logging
- Volume snapshots
- FastResync
- Provisioning new usable storage
- Administering disks
- Disk devices
- Discovering and configuring newly added disk devices
- Discovering disks and dynamically adding disk arrays
- How to administer the Device Discovery Layer
- Changing the disk-naming scheme
- Adding a disk to VxVM
- Rootability
- Displaying disk information
- Removing disks
- Removing and replacing disks
- Administering Dynamic Multi-Pathing
- How DMP works
- Administering DMP using vxdmpadm
- Gathering and displaying I/O statistics
- Specifying the I/O policy
- Online dynamic reconfiguration
- Reconfiguring a LUN online that is under DMP control
- Creating and administering disk groups
- About disk groups
- Displaying disk group information
- Creating a disk group
- Importing a disk group
- Moving disk groups between systems
- Handling cloned disks with duplicated identifiers
- Handling conflicting configuration copies
- Reorganizing the contents of disk groups
- Destroying a disk group
- Creating and administering subdisks and plexes
- Displaying plex information
- Reattaching plexes
- Creating volumes
- Types of volume layouts
- Creating a volume
- Using vxassist
- Creating a volume on specific disks
- Creating a mirrored volume
- Creating a striped volume
- Creating a volume using vxmake
- Initializing and starting a volume
- Using rules and persistent attributes to make volume allocation more efficient
- Administering volumes
- Displaying volume information
- Monitoring and controlling tasks
- Reclamation of storage on thin reclamation arrays
- Stopping a volume
- Resizing a volume
- Adding a mirror to a volume
- Preparing a volume for DRL and instant snapshots
- Adding traditional DRL logging to a mirrored volume
- Enabling FastResync on a volume
- Performing online relayout
- Adding a RAID-5 log
- Creating and administering volume sets
- Configuring off-host processing
- Administering hot-relocation
- How hot-relocation works
- Moving relocated subdisks
- Administering cluster functionality (CVM)
- Overview of clustering
- Multiple host failover configurations
- CVM initialization and configuration
- Dirty region logging in cluster environments
- Administering VxVM in cluster environments
- Changing the CVM master manually
- Importing disk groups as shared
- Administering sites and remote mirrors
- About sites and remote mirrors
- Fire drill - testing the configuration
- Changing the site name
- Administering the Remote Mirror configuration
- Failure and recovery scenarios
- Performance monitoring and tuning
- Appendix A. Using Veritas Volume Manager commands
- Appendix B. Configuring Veritas Volume Manager
Displaying disk group information
To display information on existing disk groups, enter the following command:
# vxdg list NAME STATE ID rootdg enabled 730344554.1025.tweety newdg enabled 731118794.1213.tweety
To display more detailed information on a specific disk group, use the following command:
# vxdg list diskgroup
When you apply this command to a disk group named mydg, the output is similar to the following:
# vxdg list mydg
Group: mydg dgid: 962910960.1025.bass import-id: 0.1 flags: version: 160 local-activation: read-write alignment: 512 (bytes) ssb: on detach-policy: local copies: nconfig=default nlog=default config: seqno=0.1183 permlen=3448 free=3428 templen=12 loglen=522 config disk c0t10d0 copy 1 len=3448 state=clean online config disk c0t11d0 copy 1 len=3448 state=clean online log disk c0t10d0 copy 1 len=522 log disk c0t11d0 copy 1 len=522
To verify the disk group ID and name that is associated with a specific disk (for example, to import the disk group), use the following command:
# vxdisk -s list devicename
This command provides output that includes the following information for the specified disk. For example, output for disk c0t12d0 as follows:
Disk: c0t12d0 type: simple flags: online ready private autoconfig autoimport imported diskid: 963504891.1070.bass dgname: newdg dgid: 963504895.1075.bass hostid: bass info: privoffset=128