Veritas Volume Manager - Daemon's

Daemon’s inside vxvm

1. VXconfigd: This is a main configuration daemon inside veritas which maintains systemconfiguration in kernel and disk. If this daemon is stopped it will not disable any configured state loaded into this kernel.

This daemon has 3 states –

1. Enable: Normal State
2. Disable: Most operations cannot be used.
3. Booted: Normal startup with the help of disk group.

2. Vxrelogd: Monitors for failure events and responsible for replacing a failed disk.
3. Vxcached: Maintains the buffer for output inside veritas.
4. Vxiod: Known and Input/Output daemon which manages IO operations inside a veritas volume.
5. Vxconfigbackupd: It is responsible for takin the backup of a disk group automatically.
6. Vxnotifyd: It forwards the messages to the user to a file or to a specific location based on configuration

To get the version of veritas installed

# modinfo | grep –I vxvm

# pkginfo –l VRTSvxvm

# cd /etc/vx/bin (All veritas commands are stored in here)

# cd /opt/vrts/bin (Administration commands are stored in here)

# cd /etc/vx/license/lic (Veritas licenses are stored)

#vxlicrep (To get license info)

 To update license keys.

#  cd /etc/vx/lisence/lic

# rm –r *

# vx licinst

●        Enter license key.

# vxdctl mode (To know the state of vxconfigd)

# vxdctl disable (Stops daemon)

# vxdctl enable ( Enables daemon)

# vxdctl mode

The volboot file also contains a list of disks to scan in search of the rootdg disk group. At least one disk in this list must be both readable and a part of the rootdgdisk group, or the Volume Manager will not be able to start up correctly.