Content-type: text/html Man page of defragcron

defragcron

Section: Maintenance Commands (8)
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NAME

defragcron - Schedules AdvFS file domains for defragmenting  

SYNOPSIS

/usr/sbin/defragcron [-p] [-q] [-t nnn] [-b hh:mm] [-a hh:mm] [domain...]

/usr/sbin/defragcron [-p] [-q] [-t nnn] [-T mm] [domain...]


 

OPTIONS

Specifies that the domains are to be defragmented in parallel. If not specified, the default is to serially defragment the domains. Suppress informational messages. If not specified, the default is to produce informational messages. Specifies the aggregate I/O performance threshold, the point at which the domain should be defragmented. A number from 1-100. If not specified, the default is to always defragment the domain.

The performance threshold is based on the value returned by the defragment -nv command. If this value is lower than or equal to the value specified here, the domain is defragmented. If specified, the utility will not run before this time and will return an error if the time is not yet reached. Specify time values using the 24-hour clock. If not specified, the default time is 01:00. If specified, the utility will not run after this time, and will return an error if the time has been passed. Specify time values using the 24-hour clock. If not specified, the default time is 05:00. Specifies an exact time interval, in minutes, for the defragment utility to run. If not specified, there is no default.
If you use this option, its action overrides the before and after time checking of the -a and -b options.
 

OPERANDS

Specifies one or more AdvFS file domains. If no domains are specified, the default action is for the utility to defragment all active AdvFS file domains.
 

DESCRIPTION

The defragcron utility runs the defragment utility to a schedule that you specify on all active AdvFS file domains or on the active domains you specify.

The typical use of this utility is to run it as a command in the cron daemon. See cron(8).

The utility does not attempt to defragment inactive file domains (those which have unmounted filesets).
 

RESTRICTIONS

You must have root user privileges to run this utility.

All restrictions for the defragment utility are in effect for the defragcron utility.
 

EXIT STATUS

The utility returns a 0 (zero) on success. Otherwise, it returns a 1 and an error diagnostic.
 

EXAMPLES

The following example defragments all active domains that have an aggregate I/O performance threshold less than or equal to 60 for an interval of 240 minutes: # /usr/sbin/defragcon -q -t 60 -T 240


 

FILES

The command's path. The path of the defragment utility.
 

SEE ALSO

Commands:  crontab(1), cron(8), defragment(8)


 

Index

NAME
SYNOPSIS
OPTIONS
OPERANDS
DESCRIPTION
RESTRICTIONS
EXIT STATUS
EXAMPLES
FILES
SEE ALSO

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Time: 02:40:40 GMT, October 02, 2010