functional/clean_mirror/clean_mirror_common.kshlib

	clean_mirror_common.kshlib revision 1d32ba663e202c24a5a1f2e5aef83fffb447cb7f
#
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#
# Copyright 2007 Sun Microsystems, Inc.  All rights reserved.
# Use is subject to license terms.
#

#
# Copyright (c) 2013, 2016 by Delphix. All rights reserved.
#

. $STF_SUITE/tests/functional/clean_mirror/default.cfg

# Most of the code related to the clearing of mirrors is duplicated in all
# the test cases below this directory, barring a few minor changes
# involving the device to be affected and the 'object' to use to mangle
# the contents of the mirror.
# This code is sourced into each of these test cases.

#
# Synchronize all the data in pool
#
# $1 pool name
#
function sync_pool #pool
{
    typeset pool=$1

    log_must sync
    log_must sleep 2
    # Flush all the pool data.
    typeset -i ret
    zpool scrub $pool >/dev/null 2>&1
    ret=$?
    (( $ret != 0 )) && \
        log_fail "zpool scrub $pool failed."

    while ! is_pool_scrubbed $pool; do
        if is_pool_resilvered $pool ; then
            log_fail "$pool should not be resilver completed."
        fi
        log_must sleep 2
    done
}

function overwrite_verify_mirror
{
    typeset AFFECTED_DEVICE=$1
    typeset OVERWRITING_DEVICE=$2

    typeset atfile=0
    set -A files
    set -A cksums
    set -A newcksums

    while (( atfile < FILE_COUNT )); do
        files[$atfile]=$TESTDIR/file.$atfile
        log_must file_write -o create -f $TESTDIR/file.$atfile \
            -b $FILE_SIZE -c 1
        cksums[$atfile]=$(cksum ${files[$atfile]})
        (( atfile = atfile + 1 ))
    done

    # dd the primary side of the mirror
    log_must dd if=$OVERWRITING_DEVICE of=/dev/dsk/$AFFECTED_DEVICE \
        seek=8 bs=$DD_BLOCK count=$(( DD_COUNT - 8 )) conv=notrunc

    atfile=0

    #
    # Flush out the cache so that we ensure we're reading from disk.
    #
    log_must zpool export $TESTPOOL
    log_must zpool import $TESTPOOL

    typeset -i failedcount=0
    while (( atfile < FILE_COUNT )); do
        files[$atfile]=$TESTDIR/file.$atfile
        newcksum=$(cksum ${files[$atfile]})
        if [[ $newcksum != ${cksums[$atfile]} ]]; then
            (( failedcount = failedcount + 1 ))
        fi
        rm -f ${files[$atfile]}
        (( atfile = atfile + 1 ))
    done

    if (( $failedcount > 0 )); then
        log_fail "of the $FILE_COUNT files $failedcount did not " \
            "have the same checksum before and after."
    fi

    sync_pool $TESTPOOL
}