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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 free space in a disk group
Before you add volumes and file systems to your system, make sure that you have enough free disk space to meet your needs.
To display free space in the system, use the following command:
# vxdg free
The following is example output:
GROUP DISK DEVICE TAG OFFSET LENGTH FLAGS mydg mydg01 c0t10d0 c0t10d0 0 4444228 - mydg mydg02 c0t11d0 c0t11d0 0 4443310 - newdg newdg01 c0t12d0 c0t12d0 0 4443310 - newdg newdg02 c0t13d0 c0t13d0 0 4443310 - oradg oradg01 c0t14d0 c0t14d0 0 4443310 -
To display free space for a disk group, use the following command:
# vxdg -g diskgroup free
where -g diskgroup optionally specifies a disk group.
For example, to display the free space in the disk group, mydg, use the following command:
# vxdg -g mydg free
The following example output shows the amount of free space in sectors:
DISK DEVICE TAG OFFSET LENGTH FLAGS mydg01 c0t10d0 c0t10d0 0 4444228 - mydg02 c0t11d0 c0t11d0 0 4443310 -