#!/bin/bash

#

# Configuration file for /etc/cron.weekly/raid-check

#

# options:

#	ENABLED - must be yes in order for the raid check to proceed

#	CHECK - can be either check or repair depending on the type of

#		operation the user desires.  A check operation will scan

#		the drives looking for bad sectors and automatically

#		repairing only bad sectors.  If it finds good sectors that

#		contain bad data (meaning that the data in a sector does

#		not agree with what the data from another disk indicates

#		the data should be, for example the parity block + the other

#		data blocks would cause us to think that this data block

#		is incorrect), then it does nothing but increments the

#		counter in the file /sys/block/$dev/md/mismatch_count.

#		This allows the sysadmin to inspect the data in the sector

#		and the data that would be produced by rebuilding the

#		sector from redundant information and pick the correct

#		data to keep.  The repair option does the same thing, but

#		when it encounters a mismatch in the data, it automatically

#		updates the data to be consistent.  However, since we really

#		don't know whether it's the parity or the data block that's

#		correct (or which data block in the case of raid1), it's

#		luck of the draw whether or not the user gets the right

#		data instead of the bad data.  This option is the default

#		option for devices not listed in either CHECK_DEVS or

#		REPAIR_DEVS.

#	CHECK_DEVS - a space delimited list of devs that the user specifically

#		wants to run a check operation on.

#	REPAIR_DEVS - a space delimited list of devs that the user

#		specifically wants to run a repair on.

#	SKIP_DEVS - a space delimited list of devs that should be skipped

#	NICE - Change the raid check CPU and IO priority in order to make

#		the system more responsive during lengthy checks.  Valid

#		values are high, normal, low, idle.

#	MAXCONCURENT - Limit the number of devices to be checked at a time.

#		By default all devices will be checked at the same time.

#

# Note: the raid-check script intentionaly runs last in the cron.weekly

# sequence.  This is so we can wait for all the resync operations to complete

# and then check the mismatch_count on each array without unduly delaying

# other weekly cron jobs.  If any arrays have a non-0 mismatch_count after

# the check completes, we echo a warning to stdout which will then me emailed

# to the admin as long as mails from cron jobs have not been redirected to

# /dev/null.  We do not wait for repair operations to complete as the

# md stack will correct any mismatch_cnts automatically.

#

# Note2: you can not use symbolic names for the raid devices, such as you

# /dev/md/root.  The names used in this file must match the names seen in

# /proc/mdstat and in /sys/block.

ENABLED=yes

CHECK=check

NICE=low

# To check devs /dev/md0 and /dev/md3, use "md0 md3"

CHECK_DEVS=""

REPAIR_DEVS=""

SKIP_DEVS=""

MAXCONCURRENT=