Sindbad~EG File Manager

#!/usr/local/bin/ksh93 -p
# vim: filetype=sh
#
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# $FreeBSD$

#
# Copyright 2013 Spectra Logic.  All rights reserved.
# Use is subject to license terms.
#

# Common routines used by multiple zfsd tests

function wait_for_pool_dev_state_change
{
	typeset -i timeout=$1
	typeset disk=$2
	typeset state=$3

	log_note "Waiting up to $timeout seconds for $disk to become $state ..."
	for ((; $timeout > 0; timeout=$timeout-1)); do
		check_state $TESTPOOL "$disk" "$state"
		[ $? -eq 0 ] && return
		$SLEEP 1
	done
	log_must $ZPOOL status $TESTPOOL
	log_fail "ERROR: Disk $disk not marked as $state in $TESTPOOL"
}

function wait_for_pool_removal
{
	typeset -i timeout=$1
	wait_for_pool_dev_state_change $timeout $REMOVAL_DISK "REMOVED|UNAVAIL"
}

function wait_until_scrubbed
{
	typeset pool=$1

	while is_pool_scrubbing $pool; do
		log_note "$pool still scrubbing..."
		$SLEEP 1
	done
}

function corrupt_pool_vdev
{
	typeset pool=$1
	typeset vdev=$2
	typeset file=$3

	# do some IO on the pool
	log_must $DD if=/dev/zero of=$file bs=1024k count=64
	$FSYNC $file

	# scribble on the underlying file to corrupt the vdev
	log_must $DD if=/dev/urandom of=$vdev bs=1024k count=64 conv=notrunc

	# Scrub the pool to detect the corruption
	log_must $ZPOOL scrub $pool
	wait_until_scrubbed $pool

	# ZFSD can take up to 60 seconds to degrade an array in response to
	# errors (though it's usually faster).  
	wait_for_pool_dev_state_change 60 $vdev DEGRADED
}