cmvxserviced man page on HP-UX

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cmvxserviced(1m)					      cmvxserviced(1m)

       cmvxserviced  -	monitor	 VxVM  and CVM volumes for a high availability

       cmvxserviced [-h|-v] [-O log_file] [-D  log_level]  [-t	poll_interval]

       cmvxserviced monitors VxVM and CVM volumes. It runs as a service within
       a package that depends on the monitored storage. When a monitored  vol‐
       ume  fails  or becomes inaccessible (see Scope of Monitoring), the ser‐
       vice will exit, causing the package to fail on the current  node.   The
       package's failover behavior depends on its configured settings.

       cmvxserviced  periodically  probes  each	 volume	 named by volume_path,
       which must identify a block device file.

   Scope of Monitoring
       The VxVM Volume Monitor detects the following failures:

	      o Failure of the last link to a storage device or set of devices
		critical to volume operation

	      o Failure of a storage device or set of devices critical to vol‐
		ume operation

	      o An unexpected detachment or disablement of a volume

       The VxVM Volume Monitor does not detect the following failures:

	      o Failure of a redundant link to a  storage  device  or  set  of
		devices if a functioning link remains

	      o Failure	 of a mirrored plex within a volume (assuming at least
		one plex is functional)

	      o Corruption of data on a volume which VxVM or  CVM  regards  as
		enabled and active

       cmvxserviced supports the following options:

	      -h		Displays  the  usage,  as  listed  above,  and

	      -v		Displays the monitor version and exits.

				NOTE Do not include the -h or -v parameters in
				your  service  command;	 this  will  result in
				immediate package failure at runtime.

	      -O log_file	Specifies a file for logging (log messages are
				printed to the console by default).

	      -D log_level	Specifies  the	log level. The level of detail
				logged is directly proportional to the numeri‐
				cal  value  of	the  log level. That is, a log
				level of 7 will provide the greatest amount of
				log information. The default log level is 0.

	      -t poll_interval	Specifies the interval between volume probes.

				You  can specify a polling interval of as lit‐
				tle as 1 (one second), but bear in mind that a
				short  polling interval (less than 10 seconds)
				may impair system performance if you are moni‐
				toring	a  large  number of volumes. HP recom‐
				mends a polling interval of at least  10  sec‐
				onds if 50 or more volumes are being monitored
				by a single service command.

				The default polling interval is 60 seconds.

	      /usr/sbin/cmvxserviced	 -O	/pkg1/monlog.log     -D	     3

       This  command  monitors	a single volume, /dev/vx/dsk/cvm_dg0/lvol2, at
       log level 3, with a polling interval of 60 seconds, and prints all  log
       messages to the file /pkg1/monlog.log.

       There  should  be a one to one relationship between monitoring services
       and log files. This provides a means to correlate log messages with the
       originating monitor.

	      /usr/sbin/cmvxserviced		     /dev/vx/dsk/cvm_dg0/lvol1

       This command monitors two volumes at the default log level of 0, with a
       polling interval of 60 seconds, and prints all log messages to the con‐

	      /usr/sbin/cmvxserviced -t 10 /dev/vx/dsk/cvm_dg2/lvol3

       This command monitors a single volume at log level 0,  with  a  polling
       interval of 10 seconds, and prints all log messages to the console.

       cmvxserviced was developed by HP.

		    Requires Optional Serviceguard Software   cmvxserviced(1m)

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