mdmonitord(1M)						  System Administration Commands					    mdmonitord(1M)

NAME

       mdmonitord - daemon to monitor metadevices

SYNOPSIS

       /usr/sbin/mdmonitord [-t time_interval]

DESCRIPTION

       The mdmonitord utility is part of Solaris Volume Manager. It monitors and checks RAID1 (mirrors), RAID5 and hot spares.

       There are two methods for checking:

	   o	  At fixed time intervals.

	   o	  When	a RAID-1 (mirror), RAID-5, or hot spare fails. A failure generates  an error event which triggers a check of these metade-
		  vices.

OPTIONS

       The following options are supported:

       -t    Time interval in seconds.	The default value is 0, which causes probes to occur only upon an error. If you want to run mdmonitord	at
	     a regular interval, a value of 1800 (seconds, every half hour) is recommended as a starting point.

EXIT STATUS

       The following exit values are returned:

       0     Successful completion.

       >0    An error occurred.

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Availability		     |SUNWmdu			   |
       +-----------------------------+-----------------------------+

SEE ALSO

       svcs(1),  metaclear(1M),  metadb(1M),  metadetach(1M),  metahs(1M),  metainit(1M),  metaoffline(1M), metaonline(1M), metaparam(1M), metare-
       cover(1M),  metarename(1M),  metareplace(1M),  metaroot(1M),  metaset(1M),  metassist(1M),   metastat(1M),   metasync(1M),   metattach(1M),
       svcadm(1M), md.tab(4), md.cf(4), mddb.cf(4), md.tab(4), attributes(5), smf(5), md(7D)

NOTES

       Since frequent probes can affect performance, it is recommended that the intervals between probes be limited.

       The mdmonitord service is managed by the service management facility, smf(5), under the service identifier:

	 svc:/system/mdmonitor

       Administrative  actions	on  this  service, such as enabling, disabling, or requesting restart, can be performed using svcadm(1M). The ser-
       vice's status can be queried using the svcs(1) command.

SunOS 5.11							    25 Jul 2004 						    mdmonitord(1M)