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Enclosure LED fixes
- Pass $VDEV_ENC_SYSFS_PATH to 'zpool [iostat|status] -c' to include enclosure LED sysfs path. - Set LEDs correctly after import. This includes clearing any erroniously set LEDs prior to the import, and setting the LED for any UNAVAIL drives. - Include symlink for vdev_attach-led.sh in Makefile.am. - Print the VDEV path in all-syslog.sh, and fix it so the pool GUID actually prints. Reviewed-by: Don Brady <don.brady@intel.com> Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Tony Hutter <hutter2@llnl.gov> Closes #5716 Closes #5751
This commit is contained in:
Tony Hutter
committed by
Brian Behlendorf
Brian Behlendorf
parent
65a736bc0d
commit
b291029e86
+6
-2
@@ -67,7 +67,9 @@ dist_zedexec_SCRIPTS = \
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zed.d/scrub_finish-notify.sh \
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zed.d/statechange-led.sh \
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zed.d/statechange-notify.sh \
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zed.d/vdev_clear-led.sh
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zed.d/vdev_clear-led.sh \
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zed.d/vdev_attach-led.sh \
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zed.d/pool_import-led.sh
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zedconfdefaults = \
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all-syslog.sh \
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@@ -76,7 +78,9 @@ zedconfdefaults = \
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scrub_finish-notify.sh \
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statechange-led.sh \
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statechange-notify.sh \
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vdev_clear-led.sh
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vdev_clear-led.sh \
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vdev_attach-led.sh \
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pool_import-led.sh
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install-data-hook:
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$(MKDIR_P) "$(DESTDIR)$(zedconfdir)"
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@@ -6,6 +6,7 @@
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. "${ZED_ZEDLET_DIR}/zed-functions.sh"
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zed_log_msg "eid=${ZEVENT_EID}" "class=${ZEVENT_SUBCLASS}" \
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"${ZEVENT_POOL:+"pool=${ZEVENT_POOL}"}" \
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"${ZEVENT_POOL_GUID:+"pool_guid=${ZEVENT_POOL_GUID}"}" \
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"${ZEVENT_VDEV_PATH:+"vdev_path=${ZEVENT_VDEV_PATH}"}" \
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"${ZEVENT_VDEV_STATE_STR:+"vdev_state=${ZEVENT_VDEV_STATE_STR}"}"
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exit 0
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Symlink
+1
@@ -0,0 +1 @@
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statechange-led.sh
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@@ -2,13 +2,19 @@
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#
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# Turn off/on the VDEV's enclosure fault LEDs when the pool's state changes.
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#
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# Turn LED on if the VDEV becomes faulted or degraded, and turn it back off
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# when it's online again. It will also turn on the LED (or keep it on) if
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# the drive becomes unavailable, unless the drive was in was a previously
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# online state (online->unavail is a normal state transition during an
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# autoreplace).
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# Turn the VDEV's fault LED on if it becomes FAULTED, DEGRADED or UNAVAIL.
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# Turn the LED off when it's back ONLINE again.
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#
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# This script requires that your enclosure be supported by the
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# This script run in two basic modes:
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#
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# 1. If $ZEVENT_VDEV_ENC_SYSFS_PATH and $ZEVENT_VDEV_STATE_STR are set, then
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# only set the LED for that particular VDEV. This is the case for statechange
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# events and some vdev_* events.
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#
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# 2. If those vars are not set, then check the state of all VDEVs in the pool,i
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# and set the LEDs accordingly. This is the case for pool_import events.
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#
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# Note that this script requires that your enclosure be supported by the
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# Linux SCSI enclosure services (ses) driver. The script will do nothing
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# if you have no enclosure, or if your enclosure isn't supported.
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#
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@@ -16,8 +22,8 @@
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# 0: enclosure led successfully set
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# 1: enclosure leds not not available
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# 2: enclosure leds administratively disabled
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# 3: ZED didn't pass enclosure sysfs path
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# 4: Enclosure sysfs path doesn't exist
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# 3: The led sysfs path passed from ZFS does not exist
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# 4: $ZPOOL not set
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[ -f "${ZED_ZEDLET_DIR}/zed.rc" ] && . "${ZED_ZEDLET_DIR}/zed.rc"
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. "${ZED_ZEDLET_DIR}/zed-functions.sh"
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@@ -30,15 +36,54 @@ if [ "${ZED_USE_ENCLOSURE_LEDS}" != "1" ] ; then
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exit 2
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fi
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[ -n "${ZEVENT_VDEV_ENC_SYSFS_PATH}" ] || exit 3
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zed_check_cmd "$ZPOOL" || exit 4
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[ -e "${ZEVENT_VDEV_ENC_SYSFS_PATH}/fault" ] || exit 4
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# Global used in set_led debug print
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vdev=""
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# Turn on/off enclosure LEDs
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function led
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# set_led (file)
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#
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# Write an enclosure sysfs file
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#
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# Arguments
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# file: sysfs file to set (like /sys/class/enclosure/0:0:1:0/SLOT 10/fault)
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# val: value to set it to
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#
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# Globals
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# vdev: VDEV name for debug printing
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#
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# Return
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# nothing
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#
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function set_led {
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file="$1"
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val="$2"
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# Set the value twice. I've seen enclosures that were
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# flakey about setting it the first time.
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echo "$val" > "$file"
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echo "$val" > "$file"
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zed_log_msg "vdev $vdev set '$file' LED to $val"
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}
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# check_and_set_led (file, val)
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#
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# Read an enclosure sysfs file, and write it if it's not already set to 'val'
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#
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# Arguments
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# file: sysfs file to set (like /sys/class/enclosure/0:0:1:0/SLOT 10/fault)
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# val: value to set it to
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#
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# Return
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# 0 on success, 3 on missing sysfs path
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#
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function check_and_set_led
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{
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file="$1/fault"
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val=$2
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file="$1"
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val="$2"
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if [ ! -e "$ZEVENT_VDEV_ENC_SYSFS_PATH/fault" ] ; then
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return 3
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fi
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# We want to check the current state first, since writing to the
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# 'fault' entry always always causes a SES command, even if the
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@@ -53,28 +98,88 @@ function led
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fi
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if [ "$current" != "$val" ] ; then
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# Set the value twice. I've seen enclosures that were
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# flakey about setting it the first time.
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echo "$val" > "$file"
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echo "$val" > "$file"
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set_led "$file" "$val"
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fi
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}
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# Decide whether to turn on/off an LED based on the state
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# Pass in path name and fault string ("ONLINE"/"FAULTED"/"DEGRADED"...etc)
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function state_to_val {
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state="$1"
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if [ "$state" == "FAULTED" ] || [ "$state" == "DEGRADED" ] || \
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[ "$state" == "UNAVAIL" ] ; then
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echo 1
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elif [ "$state" == "ONLINE" ] ; then
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echo 0
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fi
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}
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# process_pool ([pool])
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#
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# We only turn on LEDs when a drive becomes FAULTED, DEGRADED, or UNAVAIL and
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# only turn it on when it comes back ONLINE. All other states are ignored, and
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# keep the previous LED state.
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function process {
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path="$1"
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fault=$2
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if [ "$fault" == "FAULTED" ] || [ "$fault" == "DEGRADED" ] || \
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[ "$fault" == "UNAVAIL" ] ; then
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led "$path" 1
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elif [ "$fault" == "ONLINE" ] ; then
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led "$path" 0
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# Iterate through a pool (or pools) and set the VDEV's enclosure slot LEDs to
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# the VDEV's state.
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#
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# Arguments
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# pool: Optional pool name. If not specified, iterate though all pools.
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#
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# Return
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# 0 on success, 3 on missing sysfs path
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#
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function process_pool
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{
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pool="$1"
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rc=0
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# Lookup all the current LED values and paths in parallel
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cmd='echo led_token=$(cat "$VDEV_ENC_SYSFS_PATH/fault"),"$VDEV_ENC_SYSFS_PATH",'
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out=$($ZPOOL status -vc "$cmd" $pool | grep 'led_token=')
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while read -r vdev state read write chksum therest ; do
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# Read out current LED value and path
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tmp=$(echo "$therest" | sed 's/^.*led_token=//g')
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IFS="," read -r current_val vdev_enc_sysfs_path <<< "$tmp"
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if [ -z "$vdev_enc_sysfs_path" ] ; then
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# Skip anything with no sysfs LED entries
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continue
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fi
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# On some enclosures if you write 1 to fault, and read it back,
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# it will return 2. Treat all non-zero values as 1 for
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# simplicity.
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if [ "$current_val" != "0" ] ; then
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current_val=1
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fi
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val=$(state_to_val "$state")
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if [ "$current_val" == "$val" ] ; then
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# LED is already set correctly
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continue
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fi
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if [ ! -e "$vdev_enc_sysfs_path/fault" ] ; then
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rc=1
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zed_log_msg "vdev $vdev '$file/fault' doesn't exist"
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continue;
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fi
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set_led "$vdev_enc_sysfs_path/fault" $val
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done <<< "$out"
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if [ "$rc" == "0" ] ; then
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return 0
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else
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# We didn't see a sysfs entry that we wanted to set
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return 3
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fi
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}
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process "$ZEVENT_VDEV_ENC_SYSFS_PATH" "$ZEVENT_VDEV_STATE_STR"
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if [ ! -z "$ZEVENT_VDEV_ENC_SYSFS_PATH" ] && [ ! -z "$ZEVENT_VDEV_STATE_STR" ] ; then
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# Got a statechange for an individual VDEV
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val=$(state_to_val "$ZEVENT_VDEV_STATE_STR")
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vdev="$(basename $ZEVENT_VDEV_PATH)"
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check_and_set_led "$ZEVENT_VDEV_ENC_SYSFS_PATH/fault" "$val"
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else
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# Process the entire pool
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process_pool $(zed_guid_to_pool $ZEVENT_POOL_GUID)
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fi
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@@ -413,3 +413,25 @@ zed_rate_limit()
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zed_unlock "${lockfile}" "${lockfile_fd}"
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return "${rv}"
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}
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# zed_guid_to_pool (guid)
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#
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# Convert a pool GUID into its pool name (like "tank")
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# Arguments
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# guid: pool GUID (decimal or hex)
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#
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# Return
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# Pool name
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#
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function zed_guid_to_pool
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{
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if [ -z "$1" ] ; then
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return
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fi
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guid=$(printf "%llu" $1)
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if [ ! -z "$guid" ] ; then
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$ZPOOL get -H -ovalue,name guid | awk '$1=='$guid' {print $2}'
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fi
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}
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