diff options
Diffstat (limited to 'cmd/zed/zed.d/io-email.sh')
| -rwxr-xr-x | cmd/zed/zed.d/io-email.sh | 95 |
1 files changed, 33 insertions, 62 deletions
diff --git a/cmd/zed/zed.d/io-email.sh b/cmd/zed/zed.d/io-email.sh index 9edbe6670..1854b1593 100755 --- a/cmd/zed/zed.d/io-email.sh +++ b/cmd/zed/zed.d/io-email.sh @@ -1,86 +1,57 @@ #!/bin/sh # -# Send email to ZED_EMAIL in response to a CHECKSUM or IO zevent. -# Only one message per ZED_EMAIL_INTERVAL_SECS will be sent for a given -# class/pool/vdev combination. This protects against spamming the recipient -# should multiple events occur together in time for the same pool/device. +# Send email to ZED_EMAIL in response to a CHECKSUM or IO error. +# +# Only one email per ZED_EMAIL_INTERVAL_SECS will be sent for a given +# class/pool/vdev combination. This protects against spamming the recipient +# should multiple events occur together in time for the same pool/device. +# # Exit codes: # 0: email sent # 1: email failed -# 2: email suppressed -# 3: missing executable -# 4: unsupported event class -# 5: internal error -# State File Format: -# POOL;VDEV_PATH;TIME_OF_LAST_EMAIL -# -test -f "${ZED_ZEDLET_DIR}/zed.rc" && . "${ZED_ZEDLET_DIR}/zed.rc" +# 2: email not configured +# 3: email suppressed +# 9: internal error -test -n "${ZEVENT_POOL}" || exit 5 -test -n "${ZEVENT_SUBCLASS}" || exit 5 -test -n "${ZEVENT_VDEV_PATH}" || exit 5 +[ -f "${ZED_ZEDLET_DIR}/zed.rc" ] && . "${ZED_ZEDLET_DIR}/zed.rc" +. "${ZED_ZEDLET_DIR}/zed-functions.sh" -if test "${ZEVENT_SUBCLASS}" != "checksum" \ - -a "${ZEVENT_SUBCLASS}" != "io"; then - logger -t "${ZED_SYSLOG_TAG:=zed}" \ - -p "${ZED_SYSLOG_PRIORITY:=daemon.warning}" \ - `basename "$0"`: unsupported event class \"${ZEVENT_SUBCLASS}\" - exit 4 -fi +[ -n "${ZED_EMAIL}" ] || exit 2 -# Only send email if ZED_EMAIL has been configured. -test -n "${ZED_EMAIL}" || exit 2 +[ -n "${ZEVENT_POOL}" ] || exit 9 +[ -n "${ZEVENT_SUBCLASS}" ] || exit 9 +[ -n "${ZEVENT_VDEV_PATH}" ] || exit 9 -# Ensure requisite executables are installed. -if ! command -v "${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 +if [ "${ZEVENT_SUBCLASS}" != "checksum" ] \ + && [ "${ZEVENT_SUBCLASS}" != "io" ]; then + zed_log_err "unsupported event class \"${ZEVENT_SUBCLASS}\"" + exit 9 fi -NAME="zed.${ZEVENT_SUBCLASS}.email" -LOCKFILE="${ZED_LOCKDIR:=/var/lock}/${NAME}.lock" -STATEFILE="${ZED_RUNDIR:=/var/run}/${NAME}.state" +zed_check_cmd "mail" || exit 9 -# Obtain lock to ensure mutual exclusion for accessing state. -exec 8> "${LOCKFILE}" -flock -x 8 +zed_rate_limit "${ZEVENT_POOL};${ZEVENT_VDEV_PATH};${ZEVENT_SUBCLASS};email" \ + || exit 3 -# Query state for last time email was sent for this pool/vdev. -TIME_NOW=`date +%s` -TIME_LAST=`egrep "^${ZEVENT_POOL};${ZEVENT_VDEV_PATH};" "${STATEFILE}" \ - 2>/dev/null | cut -d ";" -f3` -if test -n "${TIME_LAST}"; then - TIME_DELTA=`expr "${TIME_NOW}" - "${TIME_LAST}"` - if test "${TIME_DELTA}" -lt "${ZED_EMAIL_INTERVAL_SECS:=3600}"; then - exit 2 - fi -fi - -"${MAIL}" -s "ZFS ${ZEVENT_SUBCLASS} error for ${ZEVENT_POOL} on `hostname`" \ - "${ZED_EMAIL}" <<EOF +umask 077 +email_subject="ZFS ${ZEVENT_SUBCLASS} error for ${ZEVENT_POOL} on $(hostname)" +email_pathname="${TMPDIR:="/tmp"}/$(basename -- "$0").${ZEVENT_EID}.$$" +cat > "${email_pathname}" <<EOF A ZFS ${ZEVENT_SUBCLASS} error has been detected: eid: ${ZEVENT_EID} - host: `hostname` + host: $(hostname) time: ${ZEVENT_TIME_STRING} pool: ${ZEVENT_POOL} vdev: ${ZEVENT_VDEV_TYPE}:${ZEVENT_VDEV_PATH} EOF -MAIL_STATUS=$? -# Update state. -egrep -v "^${ZEVENT_POOL};${ZEVENT_VDEV_PATH};" "${STATEFILE}" \ - 2>/dev/null > "${STATEFILE}.$$" -echo "${ZEVENT_POOL};${ZEVENT_VDEV_PATH};${TIME_NOW}" >> "${STATEFILE}.$$" -mv -f "${STATEFILE}.$$" "${STATEFILE}" +mail -s "${email_subject}" "${ZED_EMAIL}" < "${email_pathname}" +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="${MAIL_STATUS}" - exit 1 +if [ "${mail_status}" -ne 0 ]; then + zed_log_msg "mail exit=${mail_status}" + exit 1 fi - +rm -f "${email_pathname}" exit 0 |