62 lines
1.8 KiB
Bash
62 lines
1.8 KiB
Bash
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#!/bin/sh
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#
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# Turn off disk's enclosure slot if it becomes FAULTED.
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#
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# Bad SCSI disks can often "disappear and reappear" causing all sorts of chaos
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# as they flip between FAULTED and ONLINE. If
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# ZED_POWER_OFF_ENCLOUSRE_SLOT_ON_FAULT is set in zed.rc, and the disk gets
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# FAULTED, then power down the slot via sysfs:
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#
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# /sys/class/enclosure/<enclosure>/<slot>/power_status
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#
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# We assume the user will be responsible for turning the slot back on again.
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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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# Exit codes:
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# 0: slot successfully powered off
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# 1: enclosure not available
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# 2: ZED_POWER_OFF_ENCLOUSRE_SLOT_ON_FAULT disabled
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# 3: vdev was not FAULTED
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# 4: The enclosure sysfs path passed from ZFS does not exist
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# 5: Enclosure slot didn't actually turn off after we told it to
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[ -f "${ZED_ZEDLET_DIR}/zed.rc" ] && . "${ZED_ZEDLET_DIR}/zed.rc"
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. "${ZED_ZEDLET_DIR}/zed-functions.sh"
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if [ ! -d /sys/class/enclosure ] ; then
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# No JBOD enclosure or NVMe slots
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exit 1
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fi
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if [ "${ZED_POWER_OFF_ENCLOUSRE_SLOT_ON_FAULT}" != "1" ] ; then
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exit 2
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fi
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if [ "$ZEVENT_VDEV_STATE_STR" != "FAULTED" ] ; then
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exit 3
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fi
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if [ ! -f "$ZEVENT_VDEV_ENC_SYSFS_PATH/power_status" ] ; then
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exit 4
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fi
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echo "off" | tee "$ZEVENT_VDEV_ENC_SYSFS_PATH/power_status"
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# Wait for sysfs for report that the slot is off. It can take ~400ms on some
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# enclosures.
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for i in $(seq 1 20) ; do
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if [ "$(cat $ZEVENT_VDEV_ENC_SYSFS_PATH/power_status)" == "off" ] ; then
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break
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fi
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sleep 0.1
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done
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if [ "$(cat $ZEVENT_VDEV_ENC_SYSFS_PATH/power_status)" != "off" ] ; then
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exit 5
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fi
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zed_log_msg "powered down slot $ZEVENT_VDEV_ENC_SYSFS_PATH for $ZEVENT_VDEV_PATH"
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