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#!/bin/sh
#
# Send email to ZED_EMAIL in response to a RESILVER.FINISH or SCRUB.FINISH.
# By default, "zpool status" output will only be included in the email for
# a scrub.finish zevent if the pool is not healthy; to always include its
# output, set ZED_EMAIL_VERBOSE=1.
# Exit codes:
# 0: email sent
# 1: email failed
# 2: email suppressed
# 3: missing executable
# 4: unsupported event class
# 5: internal error
#
test -f "${ZED_ZEDLET_DIR}/zed.rc" && . "${ZED_ZEDLET_DIR}/zed.rc"
test -n "${ZEVENT_POOL}" || exit 5
test -n "${ZEVENT_SUBCLASS}" || exit 5
if test "${ZEVENT_SUBCLASS}" = "resilver.finish"; then
ACTION="resilvering"
elif test "${ZEVENT_SUBCLASS}" = "scrub.finish"; then
ACTION="scrubbing"
else
logger -t "${ZED_SYSLOG_TAG:=zed}" \
-p "${ZED_SYSLOG_PRIORITY:=daemon.warning}" \
`basename "$0"`: unsupported event class \"${ZEVENT_SUBCLASS}\"
exit 4
fi
# Only send email if ZED_EMAIL has been configured.
test -n "${ZED_EMAIL}" || exit 2
# Ensure requisite executables are installed.
if ! command -v "${MAIL:=mail}" >/dev/null 2>&1; then
logger -t "${ZED_SYSLOG_TAG:=zed}" \
-p "${ZED_SYSLOG_PRIORITY:=daemon.warning}" \
`basename "$0"`: "${MAIL}" not installed
exit 3
fi
if ! test -x "${ZPOOL}"; then
logger -t "${ZED_SYSLOG_TAG:=zed}" \
-p "${ZED_SYSLOG_PRIORITY:=daemon.warning}" \
`basename "$0"`: "${ZPOOL}" not installed
exit 3
fi
# For scrub, suppress email if pool is healthy and verbosity is not enabled.
if test "${ZEVENT_SUBCLASS}" = "scrub.finish"; then
HEALTHY=`"${ZPOOL}" status -x "${ZEVENT_POOL}" | \
grep "'${ZEVENT_POOL}' is healthy"`
test -n "${HEALTHY}" -a "${ZED_EMAIL_VERBOSE:=0}" = 0 && exit 2
fi
"${MAIL}" -s "ZFS ${ZEVENT_SUBCLASS} event for ${ZEVENT_POOL} on `hostname`" \
"${ZED_EMAIL}" <<EOF
A ZFS pool has finished ${ACTION}:
eid: ${ZEVENT_EID}
host: `hostname`
time: ${ZEVENT_TIME_STRING}
`"${ZPOOL}" status "${ZEVENT_POOL}"`
EOF
MAIL_STATUS=$?
if test "${MAIL_STATUS}" -ne 0; then
logger -t "${ZED_SYSLOG_TAG:=zed}" \
-p "${ZED_SYSLOG_PRIORITY:=daemon.warning}" \
`basename "$0"`: "${MAIL}" exit="${MAIL_STATUS}"
exit 1
fi
exit 0
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