Something about VxVM(1)

Veritas volume manager 3.5 for HPUX provides state-of-the-art online disk management for HPUX. VxVM consists of several related products:
Base veritas volume manager 3.5 for HPUX(Base VxVM)
Veritas volume manager 3.5 for HPUX
Veritas cluster volume manager 3.5 for HPUX(CVM)
Veritas volume manager 3.5 fastresync option for HPUX(FR)

 

Swlist output and licencing:
# swlist -l product Base-VXVM B9116AA
Confirm that the product is licensed:
# vxlicense -t VxVM
# vxlicense -p (show all licenses)

 

Init scripts- VxVM 3.5
1,/sbin/init.d/vxvm-sysboot
  starts DMP restore daemon(/dev/vx/dmpconfig)
  starts configuration daemon in boot mode(/dev/vx/config)
  reads /etc/vx/volboot file to determine disk ownership for rootdg
2,/sbin/init.d/vxvm-startup
  will not start if /etc/vx/reconfig.d/state.d/install-db exist
  starts up IO daemons
  creates disk acces records for all devices
  import disk groups
  start configuration daemon in enabled mode
  creates DMP nodes that the kernel has detected
  starts volumes

 

vxconfigd-vxdctl
The veritas volume manager(VxVM) configuration daemon, vxconfigd, maintains disk configurations and disk groups in VxVM. vxconfigd takes requests from other utilities, such as vxassist or the VEA gui-- for configuration changes, and communicates those changes to the kernel and modifies configuration information stored on disk. vxconfigd also initializes VxVM when the system is booted.

The vxdctl utility manages aspects of the state of the volume configuration daemon, vxconfigd, and also manages aspects of configuration for bootstrapping the rootdg disk group.
 
The volboot file forms a key element in managing the state of vxconfigd and bootstrapping the rootdg disk group. This file contains a host ID that VERITAS volume manager uses to establish ownership of physical disks.

 

vxiod
The vxiod utility starts, stops, or reports on VERITAS volume manager I/O daemons, an I/O daemon provides a process context for performing I/O in VxVM.

 

vxrelocd;vxnotify
The vxrelocd command monitors Veritas volume manager by analyzing the output of the vxnotify command, and waits for a failure. when a failure occurs, vxrelocd sends mail via mailx to root or to other specified users and relocates failed subdisks. after completing the relocation, vxrelocd sends more mail indicating the status of each subdisk replacement.

 

VxVM Objects
1,disk groups(e.g. roodg)
A collection of VM-Disks. A disk group has one or more volumes. Disk drives can be shared by two or more hosts, but accessed by only one host at a time. If one hosts crashes, the other host can take over its disk groups and therefore, its disks.
2,volumes
A volume with a plex only belongs to one disk group
3,Plexes(plex01,plex02)
If you have 2 plexes, you have 1 mirror. plexes can also be called mirrors. a plex consists of one or more subdisks.
4,Volume manager disks(VM disk)
VM-disks are physical disk that are under VxVM control and contain one or more subdisks.