cmd/zed/zed.d/resilver.finish-email.sh

   1 #!/bin/sh
   2 #
   3 # Send email to ZED_EMAIL in response to a RESILVER.FINISH or SCRUB.FINISH.
   4 # By default, "zpool status" output will only be included in the email for
   5 #   a scrub.finish zevent if the pool is not healthy; to always include its
   6 #   output, set ZED_EMAIL_VERBOSE=1.
   7 # Exit codes:
   8 #   0: email sent
   9 #   1: email failed
  10 #   2: email suppressed
  11 #   3: missing executable
  12 #   4: unsupported event class
  13 #   5: internal error
  14 #
  15 test -f "${ZED_ZEDLET_DIR}/zed.rc" && . "${ZED_ZEDLET_DIR}/zed.rc"
  16
  17 test -n "${ZEVENT_POOL}" || exit 5
  18 test -n "${ZEVENT_SUBCLASS}" || exit 5
  19
  20 if   test "${ZEVENT_SUBCLASS}" = "resilver.finish"; then
  21   ACTION="resilvering"
  22 elif test "${ZEVENT_SUBCLASS}" = "scrub.finish"; then
  23   ACTION="scrubbing"
  24 else
  25   logger -t "${ZED_SYSLOG_TAG:=zed}" \
  26     -p "${ZED_SYSLOG_PRIORITY:=daemon.warning}" \
  27     `basename "$0"`: unsupported event class \"${ZEVENT_SUBCLASS}\"
  28   exit 4
  29 fi
  30
  31 # Only send email if ZED_EMAIL has been configured.
  32 test -n "${ZED_EMAIL}" || exit 2
  33
  34 # Ensure requisite executables are installed.
  35 if ! command -v "${MAIL:=mail}" >/dev/null 2>&1; then
  36   logger -t "${ZED_SYSLOG_TAG:=zed}" \
  37     -p "${ZED_SYSLOG_PRIORITY:=daemon.warning}" \
  38     `basename "$0"`: "${MAIL}" not installed
  39   exit 3
  40 fi
  41 if ! test -x "${ZPOOL}"; then
  42   logger -t "${ZED_SYSLOG_TAG:=zed}" \
  43     -p "${ZED_SYSLOG_PRIORITY:=daemon.warning}" \
  44     `basename "$0"`: "${ZPOOL}" not installed
  45   exit 3
  46 fi
  47
  48 # For scrub, suppress email if pool is healthy and verbosity is not enabled.
  49 if test "${ZEVENT_SUBCLASS}" = "scrub.finish"; then
  50   HEALTHY=`"${ZPOOL}" status -x "${ZEVENT_POOL}" | \
  51     grep "'${ZEVENT_POOL}' is healthy"`
  52   test -n "${HEALTHY}" -a "${ZED_EMAIL_VERBOSE:=0}" = 0 && exit 2
  53 fi
  54
  55 "${MAIL}" -s "ZFS ${ZEVENT_SUBCLASS} event for ${ZEVENT_POOL} on `hostname`" \
  56   "${ZED_EMAIL}" <<EOF
  57 A ZFS pool has finished ${ACTION}:
  58
  59    eid: ${ZEVENT_EID}
  60   host: `hostname`
  61   time: ${ZEVENT_TIME_STRING}
  62 `"${ZPOOL}" status "${ZEVENT_POOL}"`
  63 EOF
  64 MAIL_STATUS=$?
  65
  66 if test "${MAIL_STATUS}" -ne 0; then
  67   logger -t "${ZED_SYSLOG_TAG:=zed}" \
  68     -p "${ZED_SYSLOG_PRIORITY:=daemon.warning}" \
  69     `basename "$0"`: "${MAIL}" exit="${MAIL_STATUS}"
  70   exit 1
  71 fi
  72
  73 exit 0