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Allow to limit zed's syslog chattiness

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Some usage patterns like send/recv of replication streams can
produce a large number of events. In such a case, the current
all-syslog.sh zedlet will hold up to its name, and flood the
logs with mostly redundant information. Two mitigate this
situation, this changeset introduces to new variables
ZED_SYSLOG_SUBCLASS_INCLUDE and ZED_SYSLOG_SUBCLASS_EXCLUDE
to zed.rc that give more control over which event classes end
up in the syslog.

Reviewed-by: loli10K <ezomori.nozomu@gmail.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Giuseppe Di Natale <dinatale2@llnl.gov>
Signed-off-by: Tony Hutter <hutter2@llnl.gov>
Signed-off-by: Daniel Kobras <d.kobras@science-computing.de>
Closes #6886
Closes #7260
This commit is contained in:
Tony Hutter
2018-03-06 15:41:52 -08:00
parent 927f40d089
commit 6059ba27c4
9 changed files with 178 additions and 7 deletions
Download Patch File Download Diff File Expand all files Collapse all files
cmd/zed/zed.d/all-debug.sh
+2
View File
@@ -10,6 +10,8 @@
: "${ZED_DEBUG_LOG:="${TMPDIR:="/tmp"}/zed.debug.log"}"
zed_exit_if_ignoring_this_event
lockfile="$(basename -- "${ZED_DEBUG_LOG}").lock"
umask 077
cmd/zed/zed.d/all-syslog.sh
+2
View File
@@ -5,6 +5,8 @@
[ -f "${ZED_ZEDLET_DIR}/zed.rc" ] && . "${ZED_ZEDLET_DIR}/zed.rc"
. "${ZED_ZEDLET_DIR}/zed-functions.sh"
zed_exit_if_ignoring_this_event
zed_log_msg "eid=${ZEVENT_EID}" "class=${ZEVENT_SUBCLASS}" \
"${ZEVENT_POOL_GUID:+"pool_guid=${ZEVENT_POOL_GUID}"}" \
"${ZEVENT_VDEV_PATH:+"vdev_path=${ZEVENT_VDEV_PATH}"}" \
cmd/zed/zed.d/zed-functions.sh
+20
View File
@@ -438,3 +438,23 @@ zed_guid_to_pool()
$ZPOOL get -H -ovalue,name guid | awk '$1=='"$guid"' {print $2}'
fi
}
# zed_exit_if_ignoring_this_event
#
# Exit the script if we should ignore this event, as determined by
# $ZED_SYSLOG_SUBCLASS_INCLUDE and $ZED_SYSLOG_SUBCLASS_EXCLUDE in zed.rc.
# This function assumes you've imported the normal zed variables.
zed_exit_if_ignoring_this_event()
{
if [ -n "${ZED_SYSLOG_SUBCLASS_INCLUDE}" ]; then
eval "case ${ZEVENT_SUBCLASS} in
${ZED_SYSLOG_SUBCLASS_INCLUDE});;
*) exit 0;;
esac"
elif [ -n "${ZED_SYSLOG_SUBCLASS_EXCLUDE}" ]; then
eval "case ${ZEVENT_SUBCLASS} in
${ZED_SYSLOG_SUBCLASS_EXCLUDE}) exit 0;;
*);;
esac"
fi
}
cmd/zed/zed.d/zed.rc
+11
View File
@@ -100,3 +100,14 @@ ZED_USE_ENCLOSURE_LEDS=1
#
#ZED_SYSLOG_TAG="zed"
##
# Which set of event subclasses to log
# By default, events from all subclasses are logged.
# If ZED_SYSLOG_SUBCLASS_INCLUDE is set, only subclasses
# matching the pattern are logged. Use the pipe symbol (|)
# or shell wildcards (*, ?) to match multiple subclasses.
# Otherwise, if ZED_SYSLOG_SUBCLASS_EXCLUDE is set, the
# matching subclasses are excluded from logging.
#ZED_SYSLOG_SUBCLASS_INCLUDE="checksum|scrub_*|vdev.*"
#ZED_SYSLOG_SUBCLASS_EXCLUDE="statechange|config_*|history_event"