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mirror_zfs/scripts/zfault.sh
Brian Behlendorf 5cbf6db937 Disable 90-zfs.rules for test suite 
When running the zconfig.sh, zpios-sanity.sh, and zfault.sh
from the installed packages the 90-zfs.rules can cause failures.
These will occur because the test suite assumes it has full
control over loading/unloading the module stack.  If the stack
gets asynchronously loaded by the udev rule the test suite
will treat it as a failure.  Resolve the issue by disabling
the offending rule during the tests and enabling it on exit.

Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
2011-10-11 14:45:37 -07:00

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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 [hvcts]
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
# Initialize the test suite
init
# Perform pre-cleanup is requested
if [ ${CLEANUP} ]; then
${ZFS_SH} -u
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} || 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
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