30 lines
782 B
Bash
30 lines
782 B
Bash
#!/usr/bin/bash
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#
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#set -Eeuo pipefail
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#
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MQTT='mosquitto_pub -h mqtt.chaos -t switch_backup/switch'
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BASEDIR="/backup"
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#${MQTT}/debug -m "ARGS: \"$@\""
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#check for an unmount event
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if [[ "$@" == "CHECK-MOUNTS-AND-SHUTDOWN" ]]; then
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OPEN_FILES=$(lsof ${BASEDIR}/* |grep -c ${BASEDIR})
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[[ ${OPEN_FILES} -eq 0 ]] && umount ${BASEDIR}/*
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MOUNTS=$(grep -e ${BASEDIR} /proc/self/mounts | grep -v autofs -c)
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[[ ${MOUNTS} -gt 0 ]] && exit 0 #We still have mounts
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#No mounts left, shutdown disk
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vgchange -an backup >/dev/null
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sync
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sleep 5
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${MQTT}/switch_backup_power/command -m OFF
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exit 0
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fi
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#default case, echo mount string for autofs
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${MQTT}/switch_backup_power/command -m ON
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sleep 15
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vgchange -ay backup >/dev/null
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echo "-fstype=btrfs,defaults,compress=lzo :/dev/backup/${1}"
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