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-rwxr-xr-xscripts/zfault.sh951
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diff --git a/scripts/zfault.sh b/scripts/zfault.sh
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+++ b/scripts/zfault.sh
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+#!/bin/bash
+#
+# ZPOOL fault verification test script.
+#
+# The current suite of fault tests should not be thought of an exhaustive
+# list of failure modes. Rather it is simply an starting point which trys
+# to cover the bulk the of the 'easy' and hopefully common, failure modes.
+#
+# Additional tests should be added but the current suite as new interesting
+# failures modes are observed. Additional failure modes I'd like to see
+# tests for include, but are not limited too:
+#
+# * Slow but successful IO.
+# * SCSI sense codes generated as zevents.
+# * 4k sectors
+# * noise
+# * medium error
+# * recovered error
+#
+# The current infrastructure using the 'mdadm' faulty device and the
+# 'scsi_debug' simulated scsi devices. The idea is to inject the error
+# below the zfs stack to validate all the error paths. More targeted
+# failure testing should be added using the 'zinject' command line util.
+#
+# Requires the following packages:
+# * mdadm
+# * lsscsi
+# * sg3-utils
+#
+
+basedir="$(dirname $0)"
+
+SCRIPT_COMMON=common.sh
+if [ -f "${basedir}/${SCRIPT_COMMON}" ]; then
+. "${basedir}/${SCRIPT_COMMON}"
+else
+echo "Missing helper script ${SCRIPT_COMMON}" && exit 1
+fi
+
+PROG=zfault.sh
+
+usage() {
+cat << EOF
+USAGE:
+$0 [hvc]
+
+DESCRIPTION:
+ ZPOOL fault verification tests
+
+OPTIONS:
+ -h Show this message
+ -v Verbose
+ -c Cleanup md+lo+file devices at start
+ -t <#> Run listed tests
+ -s <#> Skip listed tests
+
+EOF
+}
+
+while getopts 'hvct:s:?' OPTION; do
+ case $OPTION in
+ h)
+ usage
+ exit 1
+ ;;
+ v)
+ VERBOSE=1
+ ;;
+ c)
+ CLEANUP=1
+ ;;
+ t)
+ TESTS_RUN=($OPTARG)
+ ;;
+ s)
+ TESTS_SKIP=($OPTARG)
+ ;;
+ ?)
+ usage
+ exit
+ ;;
+ esac
+done
+
+if [ $(id -u) != 0 ]; then
+ die "Must run as root"
+fi
+
+# Perform pre-cleanup is requested
+if [ ${CLEANUP} ]; then
+ cleanup_md_devices
+ cleanup_loop_devices
+ rm -f /tmp/zpool.cache.*
+fi
+
+# Check if we need to skip all md based tests.
+MD_PARTITIONABLE=0
+check_md_partitionable && MD_PARTITIONABLE=1
+if [ ${MD_PARTITIONABLE} -eq 0 ]; then
+ echo "Skipping tests 1-7 which require partitionable md devices"
+fi
+
+# Check if we need to skip all the scsi_debug tests.
+SCSI_DEBUG=0
+${INFOMOD} scsi_debug &>/dev/null && SCSI_DEBUG=1
+if [ ${SCSI_DEBUG} -eq 0 ]; then
+ echo "Skipping tests 8-9 which require the scsi_debug module"
+fi
+
+if [ ${MD_PARTITIONABLE} -eq 0 ] || [ ${SCSI_DEBUG} -eq 0 ]; then
+ echo
+fi
+
+printf "%40s%s\t%s\t%s\t%s\t%s\n" "" "raid0" "raid10" "raidz" "raidz2" "raidz3"
+
+pass_nonewline() {
+ echo -n -e "${COLOR_GREEN}Pass${COLOR_RESET}\t"
+}
+
+skip_nonewline() {
+ echo -n -e "${COLOR_BROWN}Skip${COLOR_RESET}\t"
+}
+
+nth_zpool_vdev() {
+ local POOL_NAME=$1
+ local DEVICE_TYPE=$2
+ local DEVICE_NTH=$3
+
+ ${ZPOOL} status ${POOL_NAME} | grep ${DEVICE_TYPE} ${TMP_STATUS} | \
+ head -n${DEVICE_NTH} | tail -n1 | ${AWK} "{ print \$1 }"
+}
+
+vdev_status() {
+ local POOL_NAME=$1
+ local VDEV_NAME=$2
+
+ ${ZPOOL} status ${POOL_NAME} | ${AWK} "/${VDEV_NAME}/ { print \$2 }"
+}
+
+# Required format is x.yz[KMGTP]
+expand_numeric_suffix() {
+ local VALUE=$1
+
+ VALUE=`echo "${VALUE/%K/*1000}"`
+ VALUE=`echo "${VALUE/%M/*1000000}"`
+ VALUE=`echo "${VALUE/%G/*1000000000}"`
+ VALUE=`echo "${VALUE/%T/*1000000000000}"`
+ VALUE=`echo "${VALUE/%P/*1000000000000000}"`
+ VALUE=`echo "${VALUE}" | bc | cut -d'.' -f1`
+
+ echo "${VALUE}"
+}
+
+vdev_read_errors() {
+ local POOL_NAME=$1
+ local VDEV_NAME=$2
+ local VDEV_ERRORS=`${ZPOOL} status ${POOL_NAME} |
+ ${AWK} "/${VDEV_NAME}/ { print \\$3 }"`
+
+ expand_numeric_suffix ${VDEV_ERRORS}
+}
+
+vdev_write_errors() {
+ local POOL_NAME=$1
+ local VDEV_NAME=$2
+ local VDEV_ERRORS=`${ZPOOL} status ${POOL_NAME} |
+ ${AWK} "/${VDEV_NAME}/ { print \\$4 }"`
+
+ expand_numeric_suffix ${VDEV_ERRORS}
+}
+
+vdev_cksum_errors() {
+ local POOL_NAME=$1
+ local VDEV_NAME=$2
+ local VDEV_ERRORS=`${ZPOOL} status ${POOL_NAME} |
+ ${AWK} "/${VDEV_NAME}/ { print \\$5 }"`
+
+ expand_numeric_suffix ${VDEV_ERRORS}
+}
+
+zpool_state() {
+ local POOL_NAME=$1
+
+ ${ZPOOL} status ${POOL_NAME} | ${AWK} "/state/ { print \$2; exit }"
+}
+
+zpool_event() {
+ local EVENT_NAME=$1
+ local EVENT_KEY=$2
+
+ SCRIPT1="BEGIN {RS=\"\"; FS=\"\n\"} /${EVENT_NAME}/ { print \$0; exit }"
+ SCRIPT2="BEGIN {FS=\"=\"} /${EVENT_KEY}/ { print \$2; exit }"
+
+ ${ZPOOL} events -vH | ${AWK} "${SCRIPT1}" | ${AWK} "${SCRIPT2}"
+}
+
+zpool_scan_errors() {
+ local POOL_NAME=$1
+
+ ${ZPOOL} status ${POOL_NAME} | ${AWK} "/scan: scrub/ { print \$8 }"
+ ${ZPOOL} status ${POOL_NAME} | ${AWK} "/scan: resilver/ { print \$7 }"
+}
+
+pattern_create() {
+ local PATTERN_BLOCK_SIZE=$1
+ local PATTERN_BLOCK_COUNT=$2
+ local PATTERN_NAME=`mktemp -p /tmp zpool.pattern.XXXXXXXX`
+
+ echo ${PATTERN_NAME}
+ dd if=/dev/urandom of=${PATTERN_NAME} bs=${PATTERN_BLOCK_SIZE} \
+ count=${PATTERN_BLOCK_COUNT} &>/dev/null
+ return $?
+}
+
+pattern_write() {
+ local PATTERN_NAME=$1
+ local PATTERN_BLOCK_SIZE=$2
+ local PATTERN_BLOCK_COUNT=$3
+ local DEVICE_NAME=$4
+
+ dd if=${PATTERN_NAME} of=${DEVICE_NAME} bs=${PATTERN_BLOCK_SIZE} \
+ count=${PATTERN_BLOCK_COUNT} oflag=direct &>/dev/null
+ return $?
+}
+
+pattern_write_bg() {
+ local PATTERN_NAME=$1
+ local PATTERN_BLOCK_SIZE=$2
+ local PATTERN_BLOCK_COUNT=$3
+ local DEVICE_NAME=$4
+
+ dd if=${PATTERN_NAME} of=${DEVICE_NAME} bs=${PATTERN_BLOCK_SIZE} \
+ count=${PATTERN_BLOCK_COUNT} oflag=direct &>/dev/null &
+ return $?
+}
+
+pattern_verify() {
+ local PATTERN_NAME=$1
+ local PATTERN_BLOCK_SIZE=$2
+ local PATTERN_BLOCK_COUNT=$3
+ local DEVICE_NAME=$4
+ local DEVICE_FILE=`mktemp -p /tmp zpool.pattern.XXXXXXXX`
+
+ dd if=${DEVICE_NAME} of=${DEVICE_FILE} bs=${PATTERN_BLOCK_SIZE} \
+ count=${PATTERN_BLOCK_COUNT} iflag=direct &>/dev/null
+ cmp -s ${PATTERN_NAME} ${DEVICE_FILE}
+ RC=$?
+ rm -f ${DEVICE_FILE}
+
+ return ${RC}
+}
+
+pattern_remove() {
+ local PATTERN_NAME=$1
+
+ rm -f ${PATTERN_NAME}
+ return $?
+}
+
+fault_set_md() {
+ local VDEV_FAULTY=$1
+ local FAULT_TYPE=$2
+
+ ${MDADM} /dev/${VDEV_FAULTY} --grow --level=faulty \
+ --layout=${FAULT_TYPE} >/dev/null
+ return $?
+}
+
+fault_clear_md() {
+ local VDEV_FAULTY=$1
+
+ # Clear all failure injection.
+ ${MDADM} /dev/${VDEV_FAULTY} --grow --level=faulty \
+ --layout=clear >/dev/null || return $?
+ ${MDADM} /dev/${VDEV_FAULTY} --grow --level=faulty \
+ --layout=flush >/dev/null || return $?
+ return $?
+}
+
+fault_set_sd() {
+ local OPTS=$1
+ local NTH=$2
+
+ echo ${OPTS} >/sys/bus/pseudo/drivers/scsi_debug/opts
+ echo ${NTH} >/sys/bus/pseudo/drivers/scsi_debug/every_nth
+}
+
+fault_clear_sd() {
+ echo 0 >/sys/bus/pseudo/drivers/scsi_debug/every_nth
+ echo 0 >/sys/bus/pseudo/drivers/scsi_debug/opts
+}
+
+test_setup() {
+ local POOL_NAME=$1
+ local POOL_CONFIG=$2
+ local ZVOL_NAME=$3
+ local TMP_CACHE=$4
+
+ ${ZFS_SH} zfs="spa_config_path=${TMP_CACHE}" || fail 1
+ ${ZPOOL_CREATE_SH} -p ${POOL_NAME} -c ${POOL_CONFIG} || fail 2
+ ${ZFS} create -V 64M ${POOL_NAME}/${ZVOL_NAME} || fail 3
+
+ # Trigger udev and re-read the partition table to ensure all of
+ # this IO is out of the way before we begin injecting failures.
+ udev_trigger || fail 4
+ ${BLOCKDEV} --rereadpt /dev/${POOL_NAME}/${ZVOL_NAME} || fail 5
+}
+
+test_cleanup() {
+ local POOL_NAME=$1
+ local POOL_CONFIG=$2
+ local ZVOL_NAME=$3
+ local TMP_CACHE=$4
+
+ ${ZFS} destroy ${POOL_NAME}/${ZVOL_NAME} || fail 101
+ ${ZPOOL_CREATE_SH} -p ${POOL_NAME} -c ${POOL_CONFIG} -d || fail 102
+ ${ZFS_SH} -u || fail 103
+ rm -f ${TMP_CACHE} || fail 104
+}
+
+test_write_soft() {
+ local POOL_NAME=$1
+ local POOL_CONFIG=$2
+ local POOL_REDUNDANT=$3
+ local ZVOL_NAME="zvol"
+ local ZVOL_DEVICE="/dev/${POOL_NAME}/${ZVOL_NAME}"
+
+ if [ ${MD_PARTITIONABLE} -eq 0 ]; then
+ skip_nonewline
+ return
+ fi
+
+ local TMP_CACHE=`mktemp -p /tmp zpool.cache.XXXXXXXX`
+ test_setup ${POOL_NAME} ${POOL_CONFIG} ${ZVOL_NAME} ${TMP_CACHE}
+
+ # Set soft write failure for first vdev device.
+ local VDEV_FAULTY=`nth_zpool_vdev ${POOL_NAME} md 1`
+ fault_set_md ${VDEV_FAULTY} write-transient
+
+ # The application must not observe an error.
+ local TMP_PATTERN=`pattern_create 1M 8` || fail 11
+ pattern_write ${TMP_PATTERN} 1M 8 ${ZVOL_DEVICE} || fail 12
+ fault_clear_md ${VDEV_FAULTY}
+
+ # Soft errors will not be logged to 'zpool status'
+ local WRITE_ERRORS=`vdev_write_errors ${POOL_NAME} ${VDEV_FAULTY}`
+ test ${WRITE_ERRORS} -eq 0 || fail 13
+
+ # Soft errors will still generate an EIO (5) event.
+ test `zpool_event "zfs.io" "zio_err"` = "0x5" || fail 14
+
+ # Verify the known pattern.
+ pattern_verify ${TMP_PATTERN} 1M 8 ${ZVOL_DEVICE} || fail 15
+ pattern_remove ${TMP_PATTERN} || fail 16
+
+ test_cleanup ${POOL_NAME} ${POOL_CONFIG} ${ZVOL_NAME} ${TMP_CACHE}
+ pass_nonewline
+}
+
+# Soft write error.
+test_1() {
+ test_write_soft tank lo-faulty-raid0 0
+ test_write_soft tank lo-faulty-raid10 1
+ test_write_soft tank lo-faulty-raidz 1
+ test_write_soft tank lo-faulty-raidz2 1
+ test_write_soft tank lo-faulty-raidz3 1
+ echo
+}
+run_test 1 "soft write error"
+
+test_write_hard() {
+ local POOL_NAME=$1
+ local POOL_CONFIG=$2
+ local POOL_REDUNDANT=$3
+ local ZVOL_NAME="zvol"
+ local ZVOL_DEVICE="/dev/${POOL_NAME}/${ZVOL_NAME}"
+
+ if [ ${MD_PARTITIONABLE} -eq 0 ]; then
+ skip_nonewline
+ return
+ fi
+
+ local TMP_CACHE=`mktemp -p /tmp zpool.cache.XXXXXXXX`
+ test_setup ${POOL_NAME} ${POOL_CONFIG} ${ZVOL_NAME} ${TMP_CACHE}
+
+ # Set hard write failure for first vdev device.
+ local VDEV_FAULTY=`nth_zpool_vdev ${POOL_NAME} md 1`
+ fault_set_md ${VDEV_FAULTY} write-persistent
+
+ # The application must not observe an error.
+ local TMP_PATTERN=`pattern_create 1M 8` || fail 11
+ pattern_write ${TMP_PATTERN} 1M 8 ${ZVOL_DEVICE} || fail 12
+ fault_clear_md ${VDEV_FAULTY}
+
+ local WRITE_ERRORS=`vdev_write_errors ${POOL_NAME} ${VDEV_FAULTY}`
+ if [ ${POOL_REDUNDANT} -eq 1 ]; then
+ # For redundant configurations hard errors will not be
+ # logged to 'zpool status' but will generate EIO events.
+ test ${WRITE_ERRORS} -eq 0 || fail 21
+ test `zpool_event "zfs.io" "zio_err"` = "0x5" || fail 22
+ else
+ # For non-redundant configurations hard errors will be
+ # logged to 'zpool status' and generate EIO events. They
+ # will also trigger a scrub of the impacted sectors.
+ sleep 10
+ test ${WRITE_ERRORS} -gt 0 || fail 31
+ test `zpool_event "zfs.io" "zio_err"` = "0x5" || fail 32
+ test `zpool_event "zfs.resilver.start" "ena"` != "" || fail 33
+ test `zpool_event "zfs.resilver.finish" "ena"` != "" || fail 34
+ test `zpool_scan_errors ${POOL_NAME}` -eq 0 || fail 35
+ fi
+
+ # Verify the known pattern.
+ pattern_verify ${TMP_PATTERN} 1M 8 ${ZVOL_DEVICE} || fail 41
+ pattern_remove ${TMP_PATTERN} || fail 42
+
+ test_cleanup ${POOL_NAME} ${POOL_CONFIG} ${ZVOL_NAME} ${TMP_CACHE}
+ pass_nonewline
+}
+
+# Hard write error.
+test_2() {
+ test_write_hard tank lo-faulty-raid0 0
+ test_write_hard tank lo-faulty-raid10 1
+ test_write_hard tank lo-faulty-raidz 1
+ test_write_hard tank lo-faulty-raidz2 1
+ test_write_hard tank lo-faulty-raidz3 1
+ echo
+}
+run_test 2 "hard write error"
+
+test_write_all() {
+ local POOL_NAME=$1
+ local POOL_CONFIG=$2
+ local POOL_REDUNDANT=$3
+ local ZVOL_NAME="zvol"
+ local ZVOL_DEVICE="/dev/${POOL_NAME}/${ZVOL_NAME}"
+
+ if [ ${MD_PARTITIONABLE} -eq 0 ]; then
+ skip_nonewline
+ return
+ fi
+
+ local TMP_CACHE=`mktemp -p /tmp zpool.cache.XXXXXXXX`
+ test_setup ${POOL_NAME} ${POOL_CONFIG} ${ZVOL_NAME} ${TMP_CACHE}
+
+ # Set all write failures for first vdev device.
+ local VDEV_FAULTY=`nth_zpool_vdev ${POOL_NAME} md 1`
+ fault_set_md ${VDEV_FAULTY} write-all
+
+ local TMP_PATTERN=`pattern_create 1M 8` || fail 11
+ if [ ${POOL_REDUNDANT} -eq 1 ]; then
+ # The application must not observe an error.
+ pattern_write ${TMP_PATTERN} 1M 8 ${ZVOL_DEVICE} || fail 12
+ else
+ # The application is expected to hang in the background until
+ # the faulty device is repaired and 'zpool clear' is run.
+ pattern_write_bg ${TMP_PATTERN} 1M 8 ${ZVOL_DEVICE} || fail 13
+ sleep 10
+ fi
+ fault_clear_md ${VDEV_FAULTY}
+
+ local WRITE_ERRORS=`vdev_write_errors ${POOL_NAME} ${VDEV_FAULTY}`
+ local VDEV_STATUS=`vdev_status ${POOL_NAME} ${VDEV_FAULTY}`
+ local POOL_STATE=`zpool_state ${POOL_NAME}`
+ # For all configurations write errors are logged to 'zpool status',
+ # and EIO events are generated. However, only a redundant config
+ # will cause the vdev to be FAULTED and pool DEGRADED. In a non-
+ # redundant config the IO will hang until 'zpool clear' is run.
+ test ${WRITE_ERRORS} -gt 0 || fail 14
+ test `zpool_event "zfs.io" "zio_err"` = "0x5" || fail 15
+
+ if [ ${POOL_REDUNDANT} -eq 1 ]; then
+ test "${VDEV_STATUS}" = "FAULTED" || fail 21
+ test "${POOL_STATE}" = "DEGRADED" || fail 22
+ else
+ BLOCKED=`ps a | grep "${ZVOL_DEVICE}" | grep -c -v "grep"`
+ ${ZPOOL} clear ${POOL_NAME} || fail 31
+ test ${BLOCKED} -eq 1 || fail 32
+ wait
+ fi
+
+ # Verify the known pattern.
+ pattern_verify ${TMP_PATTERN} 1M 8 ${ZVOL_DEVICE} || fail 41
+ pattern_remove ${TMP_PATTERN} || fail 42
+
+ test_cleanup ${POOL_NAME} ${POOL_CONFIG} ${ZVOL_NAME} ${TMP_CACHE}
+ pass_nonewline
+}
+
+# All write errors.
+test_3() {
+ test_write_all tank lo-faulty-raid0 0
+ test_write_all tank lo-faulty-raid10 1
+ test_write_all tank lo-faulty-raidz 1
+ test_write_all tank lo-faulty-raidz2 1
+ test_write_all tank lo-faulty-raidz3 1
+ echo
+}
+run_test 3 "all write errors"
+
+test_read_soft() {
+ local POOL_NAME=$1
+ local POOL_CONFIG=$2
+ local POOL_REDUNDANT=$3
+ local ZVOL_NAME="zvol"
+ local ZVOL_DEVICE="/dev/${POOL_NAME}/${ZVOL_NAME}"
+ local READ_ERRORS=0
+
+ if [ ${MD_PARTITIONABLE} -eq 0 ]; then
+ skip_nonewline
+ return
+ fi
+
+ local TMP_CACHE=`mktemp -p /tmp zpool.cache.XXXXXXXX`
+ test_setup ${POOL_NAME} ${POOL_CONFIG} ${ZVOL_NAME} ${TMP_CACHE}
+
+ # Create a pattern to be verified during a read error.
+ local TMP_PATTERN=`pattern_create 1M 8` || fail 11
+ pattern_write ${TMP_PATTERN} 1M 8 ${ZVOL_DEVICE} || fail 12
+
+ # Set soft read failure for all the vdevs to ensure we hit it.
+ for (( i=1; i<=4; i++ )); do
+ fault_set_md `nth_zpool_vdev ${POOL_NAME} md $i` read-transient
+ done
+
+ pattern_verify ${TMP_PATTERN} 1M 8 ${ZVOL_DEVICE} || fail 13
+ pattern_remove ${TMP_PATTERN} || fail 14
+
+ # Clear all failure injection and sum read errors.
+ for (( i=1; i<=4; i++ )); do
+ local VDEV_FAULTY=`nth_zpool_vdev ${POOL_NAME} md $i`
+ local VDEV_ERRORS=`vdev_read_errors ${POOL_NAME} ${VDEV_FAULTY}`
+ let READ_ERRORS=${READ_ERRORS}+${VDEV_ERRORS}
+ fault_clear_md ${VDEV_FAULTY}
+ done
+
+ # Soft errors will not be logged to 'zpool status'.
+ test ${READ_ERRORS} -eq 0 || fail 15
+
+ # Soft errors will still generate an EIO (5) event.
+ test `zpool_event "zfs.io" "zio_err"` = "0x5" || fail 16
+
+ test_cleanup ${POOL_NAME} ${POOL_CONFIG} ${ZVOL_NAME} ${TMP_CACHE}
+ pass_nonewline
+}
+
+# Soft read error.
+test_4() {
+ test_read_soft tank lo-faulty-raid0 0
+ test_read_soft tank lo-faulty-raid10 1
+ test_read_soft tank lo-faulty-raidz 1
+ test_read_soft tank lo-faulty-raidz2 1
+ test_read_soft tank lo-faulty-raidz3 1
+ echo
+}
+run_test 4 "soft read error"
+
+test_read_hard() {
+ local POOL_NAME=$1
+ local POOL_CONFIG=$2
+ local POOL_REDUNDANT=$3
+ local ZVOL_NAME="zvol"
+ local ZVOL_DEVICE="/dev/${POOL_NAME}/${ZVOL_NAME}"
+ local READ_ERRORS=0
+
+ if [ ${MD_PARTITIONABLE} -eq 0 ]; then
+ skip_nonewline
+ return
+ fi
+
+ local TMP_CACHE=`mktemp -p /tmp zpool.cache.XXXXXXXX`
+ test_setup ${POOL_NAME} ${POOL_CONFIG} ${ZVOL_NAME} ${TMP_CACHE}
+
+ # Create a pattern to be verified during a read error.
+ local TMP_PATTERN=`pattern_create 1M 8` || fail 11
+ pattern_write ${TMP_PATTERN} 1M 8 ${ZVOL_DEVICE} || fail 12
+
+ # Set hard read failure for the fourth vdev.
+ local VDEV_FAULTY=`nth_zpool_vdev ${POOL_NAME} md 4`
+ fault_set_md ${VDEV_FAULTY} read-persistent
+
+ # For a redundant pool there must be no IO error, for a non-redundant
+ # pool we expect permanent damage and an IO error during verify, unless
+ # we get exceptionally lucky and have just damaged redundant metadata.
+ if [ ${POOL_REDUNDANT} -eq 1 ]; then
+ pattern_verify ${TMP_PATTERN} 1M 8 ${ZVOL_DEVICE} || fail 21
+ local READ_ERRORS=`vdev_read_errors ${POOL_NAME} ${VDEV_FAULTY}`
+ test ${READ_ERRORS} -eq 0 || fail 22
+ else
+ pattern_verify ${TMP_PATTERN} 1M 8 ${ZVOL_DEVICE}
+ ${ZPOOL} scrub ${POOL_NAME} || fail 32
+ local READ_ERRORS=`vdev_read_errors ${POOL_NAME} ${VDEV_FAULTY}`
+ test ${READ_ERRORS} -gt 0 || fail 33
+ ${ZPOOL} status -v ${POOL_NAME} | \
+ grep -A8 "Permanent errors" | \
+ grep -q "${POOL_NAME}" || fail 34
+ fi
+ pattern_remove ${TMP_PATTERN} || fail 41
+
+ # Clear all failure injection and sum read errors.
+ fault_clear_md ${VDEV_FAULTY}
+
+ # Hard errors will generate an EIO (5) event.
+ test `zpool_event "zfs.io" "zio_err"` = "0x5" || fail 42
+
+ test_cleanup ${POOL_NAME} ${POOL_CONFIG} ${ZVOL_NAME} ${TMP_CACHE}
+ pass_nonewline
+}
+
+# Hard read error.
+test_5() {
+ test_read_hard tank lo-faulty-raid0 0
+ test_read_hard tank lo-faulty-raid10 1
+ test_read_hard tank lo-faulty-raidz 1
+ test_read_hard tank lo-faulty-raidz2 1
+ test_read_hard tank lo-faulty-raidz3 1
+ echo
+}
+run_test 5 "hard read error"
+
+# Fixable read error.
+test_read_fixable() {
+ local POOL_NAME=$1
+ local POOL_CONFIG=$2
+ local POOL_REDUNDANT=$3
+ local ZVOL_NAME="zvol"
+ local ZVOL_DEVICE="/dev/${POOL_NAME}/${ZVOL_NAME}"
+ local READ_ERRORS=0
+
+ if [ ${MD_PARTITIONABLE} -eq 0 ]; then
+ skip_nonewline
+ return
+ fi
+
+ local TMP_CACHE=`mktemp -p /tmp zpool.cache.XXXXXXXX`
+ test_setup ${POOL_NAME} ${POOL_CONFIG} ${ZVOL_NAME} ${TMP_CACHE}
+
+ # Create a pattern to be verified during a read error.
+ local TMP_PATTERN=`pattern_create 1M 8` || fail 11
+ pattern_write ${TMP_PATTERN} 1M 8 ${ZVOL_DEVICE} || fail 12
+
+ # Set hard read failure for the fourth vdev.
+ local VDEV_FAULTY=`nth_zpool_vdev ${POOL_NAME} md 4`
+ fault_set_md ${VDEV_FAULTY} read-fixable
+
+ # For a redundant pool there must be no IO error, for a non-redundant
+ # pool we expect permanent damage and an IO error during verify, unless
+ # we get exceptionally lucky and have just damaged redundant metadata.
+ if [ ${POOL_REDUNDANT} -eq 1 ]; then
+ pattern_verify ${TMP_PATTERN} 1M 8 ${ZVOL_DEVICE} || fail 21
+ local READ_ERRORS=`vdev_read_errors ${POOL_NAME} ${VDEV_FAULTY}`
+ test ${READ_ERRORS} -eq 0 || fail 22
+ else
+ pattern_verify ${TMP_PATTERN} 1M 8 ${ZVOL_DEVICE}
+ ${ZPOOL} scrub ${POOL_NAME} || fail 32
+ local READ_ERRORS=`vdev_read_errors ${POOL_NAME} ${VDEV_FAULTY}`
+ test ${READ_ERRORS} -gt 0 || fail 33
+ ${ZPOOL} status -v ${POOL_NAME} | \
+ grep -A8 "Permanent errors" | \
+ grep -q "${POOL_NAME}" || fail 34
+ fi
+ pattern_remove ${TMP_PATTERN} || fail 41
+
+ # Clear all failure injection and sum read errors.
+ fault_clear_md ${VDEV_FAULTY}
+
+ # Hard errors will generate an EIO (5) event.
+ test `zpool_event "zfs.io" "zio_err"` = "0x5" || fail 42
+
+ test_cleanup ${POOL_NAME} ${POOL_CONFIG} ${ZVOL_NAME} ${TMP_CACHE}
+ pass_nonewline
+}
+
+# Read errors fixable with a write.
+test_6() {
+ test_read_fixable tank lo-faulty-raid0 0
+ test_read_fixable tank lo-faulty-raid10 1
+ test_read_fixable tank lo-faulty-raidz 1
+ test_read_fixable tank lo-faulty-raidz2 1
+ test_read_fixable tank lo-faulty-raidz3 1
+ echo
+}
+run_test 6 "fixable read error"
+
+test_cksum() {
+ local POOL_NAME=$1
+ local POOL_CONFIG=$2
+ local POOL_REDUNDANT=$3
+ local VDEV_DAMAGE="$4"
+ local ZVOL_NAME="zvol"
+ local ZVOL_DEVICE="/dev/${POOL_NAME}/${ZVOL_NAME}"
+
+ if [ ${MD_PARTITIONABLE} -eq 0 ]; then
+ skip_nonewline
+ return
+ fi
+
+ local TMP_CACHE=`mktemp -p /tmp zpool.cache.XXXXXXXX`
+ test_setup ${POOL_NAME} ${POOL_CONFIG} ${ZVOL_NAME} ${TMP_CACHE}
+
+ # Create a pattern to be verified.
+ local TMP_PATTERN=`pattern_create 1M 8` || fail 11
+ pattern_write ${TMP_PATTERN} 1M 8 ${ZVOL_DEVICE} || fail 12
+
+ # Verify the pattern and that no vdev has cksum errors.
+ pattern_verify ${TMP_PATTERN} 1M 8 ${ZVOL_DEVICE} || fail 13
+ for (( i=1; i<4; i++ )); do
+ VDEV_FAULTY=`nth_zpool_vdev ${POOL_NAME} md ${i}`
+ CKSUM_ERRORS=`vdev_cksum_errors ${POOL_NAME} ${VDEV_FAULTY}`
+ test ${CKSUM_ERRORS} -eq 0 || fail 14
+ done
+
+ # Corrupt the bulk of a vdev with random garbage, we damage as many
+ # vdevs as we have levels of redundancy. For example for a raidz3
+ # configuration we can trash 3 vdevs and still expect correct data.
+ # This improves the odds that we read one of the damaged vdevs.
+ for VDEV in ${VDEV_DAMAGE}; do
+ VDEV_FAULTY=`nth_zpool_vdev ${POOL_NAME} md $VDEV`
+ pattern_write /dev/urandom 1M 64 /dev/${VDEV_FAULTY}p1
+ done
+
+ # Verify the pattern is still correct. For non-redundant pools
+ # expect failure and for redundant pools success due to resilvering.
+ if [ ${POOL_REDUNDANT} -eq 1 ]; then
+ pattern_verify ${TMP_PATTERN} 1M 8 ${ZVOL_DEVICE} || fail 16
+ else
+ pattern_verify ${TMP_PATTERN} 1M 8 ${ZVOL_DEVICE} && fail 17
+ fi
+
+ CKSUM_ERRORS=`vdev_cksum_errors ${POOL_NAME} ${VDEV_FAULTY}`
+ test ${CKSUM_ERRORS} -gt 0 || fail 18
+ STATUS=`vdev_status ${POOL_NAME} ${VDEV_FAULTY}`
+ test "${STATUS}" = "ONLINE" || fail 19
+
+ # The checksum errors must be logged as an event.
+ local CKSUM_ERRORS=`zpool_event "zfs.checksum" "zio_err"`
+ test ${CKSUM_ERRORS} = "0x34" || test ${CKSUM_ERRORS} = "0x0" || fail 20
+
+ # Verify permant errors for non-redundant pools, and for redundant
+ # pools trigger a scrub and check that all checksums have been fixed.
+ if [ ${POOL_REDUNDANT} -eq 1 ]; then
+ # Scrub the checksum errors and clear the faults.
+ ${ZPOOL} scrub ${POOL_NAME} || fail 21
+ sleep 3
+ ${ZPOOL} clear ${POOL_NAME} || fail 22
+
+ # Re-verify the pattern for fixed checksums.
+ pattern_verify ${TMP_PATTERN} 1M 8 ${ZVOL_DEVICE} || fail 23
+ CKSUM_ERRORS=`vdev_cksum_errors ${POOL_NAME} ${VDEV_FAULTY}`
+ test ${CKSUM_ERRORS} -eq 0 || fail 24
+
+ # Re-verify the entire pool for fixed checksums.
+ ${ZPOOL} scrub ${POOL_NAME} || fail 25
+ CKSUM_ERRORS=`vdev_cksum_errors ${POOL_NAME} ${VDEV_FAULTY}`
+ test ${CKSUM_ERRORS} -eq 0 || fail 26
+ else
+ ${ZPOOL} status -v ${POOL_NAME} | \
+ grep -A8 "Permanent errors" | \
+ grep -q "${POOL_NAME}/${ZVOL_NAME}" || fail 31
+ ${ZPOOL} clear ${POOL_NAME} || fail 32
+ fi
+ pattern_remove ${TMP_PATTERN} || fail 41
+
+ test_cleanup ${POOL_NAME} ${POOL_CONFIG} ${ZVOL_NAME} ${TMP_CACHE}
+ pass_nonewline
+}
+
+# Silent data corruption
+test_7() {
+ test_cksum tank lo-faulty-raid0 0 "1"
+ test_cksum tank lo-faulty-raid10 1 "1 3"
+ test_cksum tank lo-faulty-raidz 1 "4"
+ test_cksum tank lo-faulty-raidz2 1 "3 4"
+ test_cksum tank lo-faulty-raidz3 1 "2 3 4"
+ echo
+}
+run_test 7 "silent data corruption"
+
+# Soft write timeout at the scsi device layer.
+test_write_timeout_soft() {
+ local POOL_NAME=$1
+ local POOL_CONFIG=$2
+ local POOL_REDUNDANT=$3
+ local POOL_NTH=$4
+ local ZVOL_NAME="zvol"
+ local ZVOL_DEVICE="/dev/${POOL_NAME}/${ZVOL_NAME}"
+
+ if [ ${SCSI_DEBUG} -eq 0 ]; then
+ skip_nonewline
+ return
+ fi
+
+ local TMP_CACHE=`mktemp -p /tmp zpool.cache.XXXXXXXX`
+ test_setup ${POOL_NAME} ${POOL_CONFIG} ${ZVOL_NAME} ${TMP_CACHE}
+
+ # Set timeout(0x4) for every nth command.
+ fault_set_sd 4 ${POOL_NTH}
+
+ # The application must not observe an error.
+ local TMP_PATTERN=`pattern_create 1M 8` || fail 11
+ pattern_write ${TMP_PATTERN} 1M 8 ${ZVOL_DEVICE} || fail 12
+ fault_clear_sd
+
+ # Intermittent write timeouts even with FAILFAST set may not cause
+ # an EIO (5) event. This is because how FAILFAST is handled depends
+ # a log on the low level driver and the exact nature of the failure.
+ # We will however see a 'zfs.delay' event logged due to the timeout.
+ VDEV_DELAY=`zpool_event "zfs.delay" "zio_delay"`
+ test `printf "%d" ${VDEV_DELAY}` -ge 30000 || fail 13
+
+ # Verify the known pattern.
+ pattern_verify ${TMP_PATTERN} 1M 8 ${ZVOL_DEVICE} || fail 14
+ pattern_remove ${TMP_PATTERN} || fail 15
+
+ test_cleanup ${POOL_NAME} ${POOL_CONFIG} ${ZVOL_NAME} ${TMP_CACHE}
+ pass_nonewline
+}
+
+test_8() {
+ test_write_timeout_soft tank scsi_debug-raid0 0 50
+ test_write_timeout_soft tank scsi_debug-raid10 1 100
+ test_write_timeout_soft tank scsi_debug-raidz 1 75
+ test_write_timeout_soft tank scsi_debug-raidz2 1 150
+ test_write_timeout_soft tank scsi_debug-raidz3 1 300
+ echo
+}
+run_test 8 "soft write timeout"
+
+# Persistent write timeout at the scsi device layer.
+test_write_timeout_hard() {
+ local POOL_NAME=$1
+ local POOL_CONFIG=$2
+ local POOL_REDUNDANT=$3
+ local POOL_NTH=$4
+ local ZVOL_NAME="zvol"
+ local ZVOL_DEVICE="/dev/${POOL_NAME}/${ZVOL_NAME}"
+ local RESCAN=1
+
+ if [ ${SCSI_DEBUG} -eq 0 ]; then
+ skip_nonewline
+ return
+ fi
+
+ local TMP_CACHE=`mktemp -p /tmp zpool.cache.XXXXXXXX`
+ test_setup ${POOL_NAME} ${POOL_CONFIG} ${ZVOL_NAME} ${TMP_CACHE}
+
+ local TMP_PATTERN1=`pattern_create 1M 8`
+ local TMP_PATTERN2=`pattern_create 1M 8`
+ local TMP_PATTERN3=`pattern_create 1M 8`
+
+ # Create three partitions each one gets a unique pattern. The first
+ # pattern is written before the failure, the second pattern during
+ # the failure, and the third pattern while the vdev is degraded.
+ # All three patterns are verified while the vdev is degraded and
+ # then again once it is brought back online.
+ ${PARTED} -s ${ZVOL_DEVICE} mklabel gpt || fail 11
+ ${PARTED} -s ${ZVOL_DEVICE} mkpart primary 1M 16M || fail 12
+ ${PARTED} -s ${ZVOL_DEVICE} mkpart primary 16M 32M || fail 13
+ ${PARTED} -s ${ZVOL_DEVICE} mkpart primary 32M 48M || fail 14
+
+ wait_udev ${ZVOL_DEVICE}1 30
+ wait_udev ${ZVOL_DEVICE}2 30
+ wait_udev ${ZVOL_DEVICE}3 30
+
+ # Before the failure.
+ pattern_write ${TMP_PATTERN1} 1M 8 ${ZVOL_DEVICE}1 || fail 15
+
+ # Get the faulty vdev name.
+ local VDEV_FAULTY=`nth_zpool_vdev ${POOL_NAME} sd 1`
+
+ # Set timeout(0x4) for every nth command.
+ fault_set_sd 4 ${POOL_NTH}
+
+ # During the failure.
+ pattern_write ${TMP_PATTERN2} 1M 8 ${ZVOL_DEVICE}2 || fail 21
+
+ # Expect write errors to be logged to 'zpool status'
+ local WRITE_ERRORS=`vdev_write_errors ${POOL_NAME} ${VDEV_FAULTY}`
+ test ${WRITE_ERRORS} -gt 0 || fail 22
+
+ local VDEV_STATUS=`vdev_status ${POOL_NAME} ${VDEV_FAULTY}`
+ test "${VDEV_STATUS}" = "UNAVAIL" || fail 23
+
+ # Clear the error and remove it from /dev/.
+ fault_clear_sd
+ rm -f /dev/${VDEV_FAULTY}[0-9]
+
+ # Verify the first two patterns and write out the third.
+ pattern_write ${TMP_PATTERN3} 1M 8 ${ZVOL_DEVICE}3 || fail 31
+ pattern_verify ${TMP_PATTERN1} 1M 8 ${ZVOL_DEVICE}1 || fail 32
+ pattern_verify ${TMP_PATTERN2} 1M 8 ${ZVOL_DEVICE}2 || fail 33
+ pattern_verify ${TMP_PATTERN3} 1M 8 ${ZVOL_DEVICE}3 || fail 34
+
+ # Bring the device back online by rescanning for it. It must appear
+ # in lsscsi and be available to dd before allowing ZFS to bring it
+ # online. This is not required but provides additional sanity.
+ while [ ${RESCAN} -eq 1 ]; do
+ scsi_rescan
+ wait_udev /dev/${VDEV_FAULTY} 30
+
+ if [ `${LSSCSI} | grep -c "/dev/${VDEV_FAULTY}"` -eq 0 ]; then
+ continue
+ fi
+
+ dd if=/dev/${VDEV_FAULTY} of=/dev/null bs=8M count=1 &>/dev/null
+ if [ $? -ne 0 ]; then
+ continue
+ fi
+
+ RESCAN=0
+ done
+
+ # Bring the device back online. We expect it to be automatically
+ # resilvered without error and we should see minimally the zfs.io,
+ # zfs.statechange (VDEV_STATE_HEALTHY (0x7)), and zfs.resilver.*
+ # events posted.
+ ${ZPOOL} online ${POOL_NAME} ${VDEV_FAULTY}1 || fail 51
+ sleep 3
+ test `zpool_event "zfs.io" "zio_err"` = "0x5" || fail 52
+ test `zpool_event "zfs.statechange" "vdev_state"` = "0x7" || fail 53
+ test `zpool_event "zfs.resilver.start" "ena"` != "" || fail 54
+ test `zpool_event "zfs.resilver.finish" "ena"` != "" || fail 55
+ test `zpool_scan_errors ${POOL_NAME}` -eq 0 || fail 56
+
+ local VDEV_STATUS=`vdev_status ${POOL_NAME} ${VDEV_FAULTY}`
+ test "${VDEV_STATUS}" = "ONLINE" || fail 57
+
+ # Verify the known pattern.
+ pattern_verify ${TMP_PATTERN1} 1M 8 ${ZVOL_DEVICE}1 || fail 61
+ pattern_verify ${TMP_PATTERN2} 1M 8 ${ZVOL_DEVICE}2 || fail 62
+ pattern_verify ${TMP_PATTERN3} 1M 8 ${ZVOL_DEVICE}3 || fail 63
+ pattern_remove ${TMP_PATTERN1} || fail 64
+ pattern_remove ${TMP_PATTERN2} || fail 65
+ pattern_remove ${TMP_PATTERN3} || fail 66
+
+ test_cleanup ${POOL_NAME} ${POOL_CONFIG} ${ZVOL_NAME} ${TMP_CACHE}
+ pass_nonewline
+}
+
+test_9() {
+ skip_nonewline # Skip non-redundant config
+ test_write_timeout_hard tank scsi_debug-raid10 1 -50
+ test_write_timeout_hard tank scsi_debug-raidz 1 -50
+ test_write_timeout_hard tank scsi_debug-raidz2 1 -50
+ test_write_timeout_hard tank scsi_debug-raidz3 1 -50
+ echo
+}
+run_test 9 "hard write timeout"
+
+exit 0
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-15 13:42:57 +0000