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Dell EMC PowerEdge RAID Controller CLI Reference Guide

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Patrol Read

The PERC Command Line Tool supports the following patrol read commands: 
perccli /cx resume patrolread
perccli /cx set patrolread ={{on mode=<auto|manual>}|{off}}
perccli /cx set patrolread [starttime=<yyyy/mm/dd hh>] [maxconcurrentpd=<value>] 
[includessds=<on|off>] [uncfgareas=<on|off>] [excludevd=x-y,z | none]
perccli /cx set patrolread delay=<value> 
perccli /cx show patrolread
perccli /cx start patrolread 
perccli /cx stop patrolread 
perccli /cx suspend patrolread

NOTE: A patrol read operation is scheduled for all the physical drives of the controller.

The detailed description for each command follows.

perccli /cx resume patrolread

This command resumes a suspended patrol read operation.

Input example:

perccli /c0 resume patrolread

perccli /cx set patrolread {=on mode=<auto|manual>}|{off}

This command turns the patrol read scheduling on and sets the mode of the patrol read to automatic or manual.

Input example:

perccli /co set patrolread=on mode=manual

perccli /cx set patrolread [starttime=< yyyy/mm/dd hh>] | [maxconcurrentpd =<value>] | [includessds=<on|onlymixed|off>] | [uncfgareas=on|off] | [excludevd=x-y,z|none] |

This command schedules a patrol read operation. You can use the following options for patrol read command:

Table 1. Set Patrolread input optionsThis table lists and describes the Set Patrolread input options.
Option Value range Description
starttime A valid date and hour in 24 hours format. Sets the start time in yyyy/mm/dd hh format.
maxconcurrentpd Valid number of physical drives present. Sets the number of physical drives that can be patrol read at a single time.
includessds — Include SSDs in the patrol read.
uncfgareas — Include the areas not configured in the patrol read.
excludevd — Excludes virtual drives from the patrol read. To exclude particular virtual drives, you can provide list of virtual drive IDs (x,y, z format) or the range of virtual drives that needs to be excluded from a patrolread (x-y format). If this option is not specified in the command, no virtual drives are excluded.
none — Virtual drives if any were excluded before, will be removed.

NOTE: Controller time is taken as a reference for scheduling a patrol read operation.

Input example:

perccli /c0 set patrolread=on starttime=2012/02/21 00

perccli /cx set patrolread [delay=<value>]

This command delays the scheduled patrol read in hours.

Input example:

perccli /c0 set patrolread delay=30

perccli /cx show patrolread

This command shows the progress on the current patrol read in percentage.

Input example:

perccli /c0 show patrolread

perccli /cx start patrolread

This command starts the patrol read operation. This command starts a patrol read immediately.

Input example:

perccli /c0 start patrolread

perccli /cx stop patrolread

This command stops a running patrol read operation.

Input example:

perccli /c0 stop patrolread

NOTE: You cannot resume a stopped patrol read.

perccli /cx suspend patrolread

This command pauses a running patrol read operation.

Input example:

perccli /c0 suspend patrolread

NOTE: You can run this command only when a patrol read operation is running on the controller.

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