Linux and UNIX Man Pages

Test Your Knowledge in Computers #234
Difficulty: Easy
The ARPANET was started to create a Command and Control System that would survive a nuclear attack.
True or False?
Linux & Unix Commands - Search Man Pages

medstat(1M)						  System Administration Commands					       medstat(1M)

medstat - check the status of mediator hosts for a given diskset SYNOPSIS
/usr/sbin/medstat [-q] -s setname DESCRIPTION
If a specified diskset has been configured for mediators, medstat attempts to contact these hosts to see if they are accessible and returns the results of the communication. OPTIONS
-q This optional argument disables the printing of informative text. When used with -q, medstat still prints error messages and returns a result code. -s setname Specifies the name of a diskset on which medstat will work. EXAMPLES
Example 1 Checking diskset This example checks the mediator hosts for the selected diskset. # medstat -s relo-red The name of the diskset is relo-red. The medstat command prints the status for each mediator host. Additionally, if the mediator quorum is met, either through a ``golden'' mediator host or because half+1 of the mediator hosts respond, the exit code is 0. If the quorum is not met, then the exit code is 1. If no mediator hosts have been configured for the named diskset, the exit code is 2. The status field will contain one of the following values: Unreachable, Bad, Fatal, or Ok, where Unreachable indicates an RPC/communication problem, Bad indi- cates an error in the mediator data, Fatal indicates any other error condition, and Ok indicates no error conditions. FILES
/etc/lvm/meddb Contains the mediator data for a host that has been selected as a mediator host. 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 | |Interface Stability Evolving | +-----------------------------------------------------------+ SEE ALSO
metaclear(1M), metadb(1M), metadetach(1M), metahs(1M), metainit(1M), metaoffline(1M), metaonline(1M), metaparam(1M), metareplace(1M), meta- root(1M), metaset(1M), metastat(1M), metasync(1M), metattach(1M),,,, meddb(4), mediator(7D) Sun Cluster documentation, Solaris Volume Manager Administration Guide NOTES
This command is designed for use in the high availability product. SunOS 5.11 18 Jan 2001 medstat(1M)

Featured Tech Videos