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Explore Your ZFS Adaptic Replacement Cache (ARC)

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Operating Systems Solaris Solaris BigAdmin RSS Explore Your ZFS Adaptic Replacement Cache (ARC)
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Old 01-29-2009
Explore Your ZFS Adaptic Replacement Cache (ARC)
This blog explains output from the arc_summary tool, which is a kstat-based PERL application written by Ben Rockwood. The tool runs calculations and presents a report of ZFS ARC to help you interpret ARC data more appropriately. Also provides a link to the arc_summary tool.

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LEARN ABOUT OPENSOLARIS

zdb

zdb(1M) 						  System Administration Commands						   zdb(1M)

NAME

       zdb - ZFS debugger

SYNOPSIS

       zdb pool

DESCRIPTION

       The  zdb command is used by support engineers to diagnose failures and gather statistics. Since the ZFS file system is always consistent on
       disk and is self-repairing, zdb should only be run under the direction by a support engineer.

       If no arguments are specified, zdb, performs basic consistency checks on  the  pool  and  associated  datasets,	and  report  any  problems
       detected.

       Any options supported by this command are internal to Sun and subject to change at any time.

EXIT STATUS

       The following exit values are returned:

       0    The pool is consistent.

       1    An error was detected.

       2    Invalid command line options were specified.

ATTRIBUTES

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

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Availability		     |SUNWzfsu			   |
       +-----------------------------+-----------------------------+
       |Interface Stability	     |Unstable			   |
       +-----------------------------+-----------------------------+

SEE ALSO

       zfs(1M), zpool(1M), attributes(5)

SunOS 5.11							    31 Oct 2005 							   zdb(1M)