dcca723ace
The executables invoked by the ZED in response to a given zevent have been generically referred to as "scripts". By convention, these scripts have aimed to be /bin/sh compatible for reasons of portability and comprehensibility. However, the ZED only requires they be executable and (ideally) capable of reading environment variables. As such, these scripts are now referred to as ZEDLETs (ZFS Event Daemon Linkage for Executable Tasks). Signed-off-by: Chris Dunlap <cdunlap@llnl.gov> Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov> Closes #2735
74 lines
2.1 KiB
Bash
Executable File
74 lines
2.1 KiB
Bash
Executable File
#!/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
|