Veritas™ Volume Manager Administrator's Guide
- 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
Configuring a new disk group as a Remote Mirror configuration
Note:
This section describes setting up a new disk group. To configure an existing disk group as a Remote Mirror configuration, additional steps may be required.
See Making an existing disk group site consistent.
Setting up a new disk group for a Remote Mirror configuration
- Define the site name for each host that can access the disk group.
# vxdctl set site=sitename
To verify the site name assigned to the host, use the following command:
# vxdctl list
- Create the disk group with storage from each site.
- Register a site record to the disk group, for each site.
# vxdg -g diskgroup [-f] addsite sitename
- Do one of the following:
To tag all disks regardless of the disk group, do the following:
Assign a site name to the disks or enclosures. You can set site tags at the disk level, or at the enclosure level. If you specify one or more enclosures, the site tag applies to the disks in that enclosure that are within the disk group. Enter the following command:
# vxdisk [-g diskgroup] settag site=sitename \ disk disk1... |encl:encl_name encl:encl_name1...
where the disks can be specified either by the disk access name or the disk media name.
To autotag new disks added to the disk group based on the enclosure to which they belong, perform the following steps in the order presented. These steps are limited to disks in a single group.
Set the autotagging policy to on for the disk group, if required. Automatic tagging is the default setting, so this step is only required if the autotagging policy was previously disabled. To turn on autotagging, enter the following command:
# vxdg [-g diskgroup] set autotagging=on
Add site-enclosure mapping information to the diskgroup for each site-enclosure combination. Enter the following command:
# vxdg [-g diskgroup] settag encl:encl_name1 site=sitename1
As a result of this command, all disks of enclosure encl_name1 in the specified disk group are tagged with site information.
- Turn on the site consistency requirement for a disk group:
# vxdg -g diskgroup set siteconsistent=on