| #!/bin/sh |
| # shellcheck disable=SC3014,SC2154,SC2086,SC2034 |
| # |
| # Turn off disk's enclosure slot if it becomes FAULTED. |
| # |
| # Bad SCSI disks can often "disappear and reappear" causing all sorts of chaos |
| # as they flip between FAULTED and ONLINE. If |
| # ZED_POWER_OFF_ENCLOUSRE_SLOT_ON_FAULT is set in zed.rc, and the disk gets |
| # FAULTED, then power down the slot via sysfs: |
| # |
| # /sys/class/enclosure/<enclosure>/<slot>/power_status |
| # |
| # We assume the user will be responsible for turning the slot back on again. |
| # |
| # Note that this script requires that your enclosure be supported by the |
| # Linux SCSI Enclosure services (SES) driver. The script will do nothing |
| # if you have no enclosure, or if your enclosure isn't supported. |
| # |
| # Exit codes: |
| # 0: slot successfully powered off |
| # 1: enclosure not available |
| # 2: ZED_POWER_OFF_ENCLOUSRE_SLOT_ON_FAULT disabled |
| # 3: vdev was not FAULTED |
| # 4: The enclosure sysfs path passed from ZFS does not exist |
| # 5: Enclosure slot didn't actually turn off after we told it to |
| |
| [ -f "${ZED_ZEDLET_DIR}/zed.rc" ] && . "${ZED_ZEDLET_DIR}/zed.rc" |
| . "${ZED_ZEDLET_DIR}/zed-functions.sh" |
| |
| if [ ! -d /sys/class/enclosure ] ; then |
| # No JBOD enclosure or NVMe slots |
| exit 1 |
| fi |
| |
| if [ "${ZED_POWER_OFF_ENCLOUSRE_SLOT_ON_FAULT}" != "1" ] ; then |
| exit 2 |
| fi |
| |
| if [ "$ZEVENT_VDEV_STATE_STR" != "FAULTED" ] ; then |
| exit 3 |
| fi |
| |
| if [ ! -f "$ZEVENT_VDEV_ENC_SYSFS_PATH/power_status" ] ; then |
| exit 4 |
| fi |
| |
| # Turn off the slot and wait for sysfs to report that the slot is off. |
| # It can take ~400ms on some enclosures and multiple retries may be needed. |
| for i in $(seq 1 20) ; do |
| echo "off" | tee "$ZEVENT_VDEV_ENC_SYSFS_PATH/power_status" |
| |
| for j in $(seq 1 5) ; do |
| if [ "$(cat $ZEVENT_VDEV_ENC_SYSFS_PATH/power_status)" == "off" ] ; then |
| break 2 |
| fi |
| sleep 0.1 |
| done |
| done |
| |
| if [ "$(cat $ZEVENT_VDEV_ENC_SYSFS_PATH/power_status)" != "off" ] ; then |
| exit 5 |
| fi |
| |
| zed_log_msg "powered down slot $ZEVENT_VDEV_ENC_SYSFS_PATH for $ZEVENT_VDEV_PATH" |