Basic VERITAS Volume Replicator Commands
Veritas Volume Replicator (VVR) is data-replication software designed to contribute to an effective disaster recovery plan. VVR enables you to maintain a consistent copy of application data at one or more remote locations.
VVR is an option of Veritas Volume Manager (VxVM) that works as a fully integrated component of VxVM. VVR benefits from the robustness, ease of use, and high performance of VxVM, and at the same time, adds replication capability to VxVM. VVR can replicate existing VxVM configurations, and can be transparently configured while the application is active.
This post provides a list of some basic VVR administration commands:
Installation and Configuration
| Action | Command Line |
|---|---|
| Install VVR on both primary and all secondary systems | pkgadd -d VRTSvras VRTSvrdoc |
| Add a license on all systems | vxlicense -c |
| Configure a network connection between primary and secondary | /etc/hostname.device /etc/hosts |
| Create identical kernel memory parameters on primary and secondary | vi /etc/system * start kernal memory for vvr32 set vxio:voliomem_maxpool_sz= set vxio:vol_min_lowmem_sz= set vxio:vol_max_rdback_sz= set vxio:vol_max_nmpool_sz= |
| Start daemons | /etc/rc2.d/S94vxnm-host_infod /etc/rc2.d/S94vxnm-vxnetd |
| Examine VVR memory | pkgadd -d . VRTSspt /opt/VRTSspt/VVR/vvrmemstat |
Constructing an RVG
| Action | Command Line |
|---|---|
| Create an RVG | vxassist -g diskgroup remove log volume vxassist -g diskgroup addlog volume logtype=dcm |
| Create an SRL volume | vxassist -g diskgroup make srl 500m |
| Create a Primary RVG | vradmin —g diskgroup createpri rvg volume srl |
| Create Secondary RVG and RLINK | vradmin —g diskgroup addsec rvg sysB-priv sysA-priv prlink=to_sysA srlink=to_sysB |
| Set replication paramters on both primary and secondary | vxedit —g diskgroup set srlprot=dcm to_sysA vxedit —g diskgroup set latencyprot=off to_sysA vxedit —g diskgroup set synchronous=off to_sysA |
| Set spare, non-hot relocation use, or set reserved space on disk | vxedit -g diskgroup set {spare|nohotuse|reserve}=on|off diskname |
| Resize a data volume | vradmin -g diskgroup resizevol rvg volume 200m |
Status and Verification
| Action | Command Line |
|---|---|
| Display number of blocks being replicated | vxrlink -i 3 stats to_sysA |
| Determine whether asynchronous replication is current | vxrlink -g diskgroup status to_sysA |
| List all RLINKs and replication parameters | vxprint -Pl |
| List all RVGs | vxprint -Vl |
| List volumes within an RVG | vradmin printvol |
| List Replicated Data Set (RDS) configuration | vradmin -l printrvg |
Removing an RVG
| Action | Command Line |
|---|---|
| Detach RLINKS on primary and secondary | vxrlink -g diskgroup det to_sysA vxrlink -g diskgroup det to_sysB |
| Stop any RVG on primary and secondary | vxrvg -g diskgroup stop rvg |
| Disassociate data volumes from an RVG | vxvol -g diskgroup dis volume vxvol -g diskgroup dis srl |
| Remove the RVG and SRL on primary and secondary | vxedit -g diskgroup -rf rm rvg |