NAME

sweepd − patrol seek on DCC drives

SYNOPSIS

/usr/etc/sweepd [ −d ]

DESCRIPTION

sweepd performs patrol seeks on all DCC drives at 5 minute intervals.  sweepd was created because DCC drive manufacturers recommend that disk heads be moved at regular intervals to increase drive longevity.  Therefore sweepd should always be set up to execute at system boot time, which can be done by putting it in the /etc/rc.local file.  If the −d option is specified, debug output is produced on stdout.  More voluminous output is generated if the option is doubled.  It is possible to disable patrol seeks on a specific drive by adding the name of the drive to the file /etc/sweepd.ignore.  The format of the sweepd.ignore file is one disk name per line.  The name should start in the first column.  Comment lines may be specified with a pound sign (#) in the first column.  Blank lines are ignored.  For example, to disable patrol seeks for zd4, add zd4 to the sweepd.ignore file on its own line and seeks will be disabled on that device.  Note that the entry must be in the file when the daemon is invoked in order to be disabled.  It is recommended that patrol seeks remain enabled on all DCC drives. 

FILES

/etc/sweepd.ignore

DIAGNOSTICS

The diagnostics produced by sweepd are intended to be self-explanatory. 

CAVEATS

Sweepd assumes that the "c" partition covers the disk surface. 

DYNIX