VxVM Daemon

vxconfigd:

• Maintains the configuration database
• Synchronizes changes between multiple requests, based on a database transaction model.
• vxconfigd reads the kernel log to determine current states of VxVM components and updates the configuration database
• Kernel logs are updated even if vxconfigd is not running. For Example, upon start-up, vxconfigd reads the kernel logs and determines that a volume needs to be resynchronized.

The vxdctl Command

            Use vxdctl to control vxconfigd.

            # vxdctl mode                            Display vxconfigd status

           

# vxdctl mode

mode: enabled

            # vxdctl enable                                    Enables vxconfigd

                # vxdctl disable                                    Disabled vxconfigd

                # vxdctl stop                                         To Stop the vxconfigd daemon

                # vxconfigd                                          To start vxconfigd

# vxdctl license                                    display vxdctl license

# vxdctl license

All features are available:

 Mirroring

 Root Mirroring

 Concatenation

 Disk-spanning

 Striping

 RAID-5

 RAID-5 Snapshot

 VxSmartSync

 Array Snapshot Integration Feature

 FastResync

 DGSJ

 Site Awareness

 DMP (multipath enabled)

 CDS

 Dynamic LUN Expansion

 Hardware assisted copy

# vxdctl support  To see what are the thing vxdctl supports

Support information:

  vxconfigd_vrsn:   24

  dg_minimum:       20

  dg_maximum:       140

  kernel:           18

  protocol_minimum: 80

  protocol_maximum: 80

  protocol_current: 0

# vxrelocd Daemon

• vxrelocd is the hot relocation daemon that monitors events that effect redundancy. Data affected from mirrored or RAID-5 subdisk are relocated to spare disks or other free space within the disk group.
• vxrelocd notifies the system administrator by email of redundancy failures and relocation activities.

# vxiod Daemon

• Volume extended I/O daemon that allows for extended I/O operation without blocking calling processes.

# vxnotify Daemon

• Notifies of events relating to disk and configuration changes

# vxconfigbackupd (Veritas) dgcfgdaemon (HP)

• HP Specific automatic configuration daemon