projects / mirror_zfs.git / blame
| Commit | Line | Data |
|---|---|---|
| d19304ff | 1 | #!/bin/sh |
| 63159e5b | 2 | # shellcheck disable=SC3014,SC2154,SC2086,SC2034 |
| d19304ff TH |
3 | # |
| 4 | # Turn off disk's enclosure slot if it becomes FAULTED. | |
| 5 | # | |
| 6 | # Bad SCSI disks can often "disappear and reappear" causing all sorts of chaos | |
| 7 | # as they flip between FAULTED and ONLINE. If | |
| 8 | # ZED_POWER_OFF_ENCLOUSRE_SLOT_ON_FAULT is set in zed.rc, and the disk gets | |
| 9 | # FAULTED, then power down the slot via sysfs: | |
| 10 | # | |
| 11 | # /sys/class/enclosure/<enclosure>/<slot>/power_status | |
| 12 | # | |
| 13 | # We assume the user will be responsible for turning the slot back on again. | |
| 14 | # | |
| 15 | # Note that this script requires that your enclosure be supported by the | |
| 16 | # Linux SCSI Enclosure services (SES) driver. The script will do nothing | |
| 17 | # if you have no enclosure, or if your enclosure isn't supported. | |
| 18 | # | |
| 19 | # Exit codes: | |
| 20 | # 0: slot successfully powered off | |
| 21 | # 1: enclosure not available | |
| 22 | # 2: ZED_POWER_OFF_ENCLOUSRE_SLOT_ON_FAULT disabled | |
| 23 | # 3: vdev was not FAULTED | |
| 24 | # 4: The enclosure sysfs path passed from ZFS does not exist | |
| 25 | # 5: Enclosure slot didn't actually turn off after we told it to | |
| 26 | ||
| 27 | [ -f "${ZED_ZEDLET_DIR}/zed.rc" ] && . "${ZED_ZEDLET_DIR}/zed.rc" | |
| 28 | . "${ZED_ZEDLET_DIR}/zed-functions.sh" | |
| 29 | ||
| 30 | if [ ! -d /sys/class/enclosure ] ; then | |
| 31 | # No JBOD enclosure or NVMe slots | |
| 32 | exit 1 | |
| 33 | fi | |
| 34 | ||
| 35 | if [ "${ZED_POWER_OFF_ENCLOUSRE_SLOT_ON_FAULT}" != "1" ] ; then | |
| 36 | exit 2 | |
| 37 | fi | |
| 38 | ||
| 39 | if [ "$ZEVENT_VDEV_STATE_STR" != "FAULTED" ] ; then | |
| 40 | exit 3 | |
| 41 | fi | |
| 42 | ||
| 43 | if [ ! -f "$ZEVENT_VDEV_ENC_SYSFS_PATH/power_status" ] ; then | |
| 44 | exit 4 | |
| 45 | fi | |
| 46 | ||
| e99e684b BB |
47 | # Turn off the slot and wait for sysfs to report that the slot is off. |
| 48 | # It can take ~400ms on some enclosures and multiple retries may be needed. | |
| d19304ff | 49 | for i in $(seq 1 20) ; do |
| e99e684b BB |
50 | echo "off" | tee "$ZEVENT_VDEV_ENC_SYSFS_PATH/power_status" |
| 51 | ||
| 52 | for j in $(seq 1 5) ; do | |
| 53 | if [ "$(cat $ZEVENT_VDEV_ENC_SYSFS_PATH/power_status)" == "off" ] ; then | |
| 54 | break 2 | |
| 55 | fi | |
| 56 | sleep 0.1 | |
| 57 | done | |
| d19304ff TH |
58 | done |
| 59 | ||
| 60 | if [ "$(cat $ZEVENT_VDEV_ENC_SYSFS_PATH/power_status)" != "off" ] ; then | |
| 61 | exit 5 | |
| 62 | fi | |
| 63 | ||
| 64 | zed_log_msg "powered down slot $ZEVENT_VDEV_ENC_SYSFS_PATH for $ZEVENT_VDEV_PATH" |