Veritas Volume Manager 4.1 Administrator's Guide (HP-UX 11i v3, February 2007)

Chapter 4, Creating and Administering Disk Groups
Managing the Configuration Daemon in VxVM
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Managing the Configuration Daemon in VxVM
The VxVM configuration daemon (vxconfigd) provides the interface between VxVM
commands and the kernel device drivers. vxconfigd handles configuration change
requests from VxVM utilities, communicates the change requests to the VxVM kernel, and
modifies configuration information stored on disk. vxconfigd also initializes VxVM
when the system is booted.
The vxdctl command is the command-line interface to the vxconfigd daemon.
You can use vxdctl to:
◆ Control the operation of the vxconfigd daemon.
◆ Change the system-wide definition of the default disk group.
Note In VxVM 4.0 and later releases, disk access records are no longer stored in the
/etc/volboot file. Non-persistent disk access records are created by scanning the
disks at system startup. Persistent disk access records for simple and nopriv
disks are permanently stored in the /etc/vx/darecs file in the root file system.
The vxconfigd daemon reads the contents of this file to locate the disks and the
configuration databases for their disk groups. (The /etc/vx/darecs file is also
used to store definitions of foreign devices that are not autoconfigurable. Such
entries may be added by using the vxddladm addforeign command. See the
vxddladm(1M) manual page for more information.)
If your system is configured to use Dynamic Multipathing (DMP), you can also use
vxdctl to:
◆ Reconfigure the DMP database to include disk devices newly attached to, or removed
from the system.
◆ Create DMP device nodes in the directories /dev/vx/dmp and /dev/vx/rdmp.
◆ Update the DMP database with changes in path type for active/passive disk arrays.
Use the utilities provided by the disk-array vendor to change the path type between
primary and secondary.
For more information about how to use vxdctl, refer to the vxdctl(1M) manual page.