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#!/bin/sh
#
# Send notification in response to a CHECKSUM, DATA, or IO error.
#
# Only one notification per ZED_NOTIFY_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/[vdev].
#
# Exit codes:
# 0: notification sent
# 1: notification failed
# 2: notification not configured
# 3: notification suppressed
# 9: internal error
[ -f "${ZED_ZEDLET_DIR}/zed.rc" ] && . "${ZED_ZEDLET_DIR}/zed.rc"
. "${ZED_ZEDLET_DIR}/zed-functions.sh"
[ -n "${ZEVENT_POOL}" ] || exit 9
[ -n "${ZEVENT_SUBCLASS}" ] || exit 9
if [ "${ZEVENT_SUBCLASS}" != "checksum" ] \
&& [ "${ZEVENT_SUBCLASS}" != "data" ] \
&& [ "${ZEVENT_SUBCLASS}" != "io" ]; then
zed_log_err "unsupported event class \"${ZEVENT_SUBCLASS}\""
exit 9
fi
rate_limit_tag="${ZEVENT_POOL};${ZEVENT_VDEV_GUID:-0};${ZEVENT_SUBCLASS};notify"
zed_rate_limit "${rate_limit_tag}" || exit 3
umask 077
note_subject="ZFS ${ZEVENT_SUBCLASS} error for ${ZEVENT_POOL} on $(hostname)"
note_pathname="${TMPDIR:="/tmp"}/$(basename -- "$0").${ZEVENT_EID}.$$"
{
[ "${ZEVENT_SUBCLASS}" = "io" ] && article="an" || article="a"
echo "ZFS has detected ${article} ${ZEVENT_SUBCLASS} error:"
echo
echo " eid: ${ZEVENT_EID}"
echo " class: ${ZEVENT_SUBCLASS}"
echo " host: $(hostname)"
echo " time: ${ZEVENT_TIME_STRING}"
[ -n "${ZEVENT_VDEV_TYPE}" ] && echo " vtype: ${ZEVENT_VDEV_TYPE}"
[ -n "${ZEVENT_VDEV_PATH}" ] && echo " vpath: ${ZEVENT_VDEV_PATH}"
[ -n "${ZEVENT_VDEV_GUID}" ] && echo " vguid: ${ZEVENT_VDEV_GUID}"
[ -n "${ZEVENT_VDEV_CKSUM_ERRORS}" ] \
&& echo " cksum: ${ZEVENT_VDEV_CKSUM_ERRORS}"
[ -n "${ZEVENT_VDEV_READ_ERRORS}" ] \
&& echo " read: ${ZEVENT_VDEV_READ_ERRORS}"
[ -n "${ZEVENT_VDEV_WRITE_ERRORS}" ] \
&& echo " write: ${ZEVENT_VDEV_WRITE_ERRORS}"
echo " pool: ${ZEVENT_POOL}"
} > "${note_pathname}"
zed_notify "${note_subject}" "${note_pathname}"; rv=$?
rm -f "${note_pathname}"
exit "${rv}"
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