49 lines
1.8 KiB
Bash
Executable File
49 lines
1.8 KiB
Bash
Executable File
#!/usr/bin/env bash
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##
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# Copyright (C) 2013-2016 Janek Bevendorff
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# Website: http://www.refining-linux.org/
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#
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# Utility program. Check if disk has been used since last check and spin it down if not.
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# Some distributions such as Synology DSM implement this by themselves.
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#
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# The MIT License (MIT)
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#
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# Permission is hereby granted, free of charge, to any person obtaining a copy
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# of this software and associated documentation files (the "Software"), to deal
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# in the Software without restriction, including without limitation the rights
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# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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# copies of the Software, and to permit persons to whom the Software is
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# furnished to do so, subject to the following conditions:
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#
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# The above copyright notice and this permission notice shall be included in
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# all copies or substantial portions of the Software.
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#
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# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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# THE SOFTWARE.
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##
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if [ "${1}" == "" ]; then
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echo "Usage: $(basename ${0}) <device file>"
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exit
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fi
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last_state_file="/tmp/storage-state-${1}"
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touch $last_state_file
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chmod 600 $last_state_file
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new_storage_state=$(cat /proc/diskstats | grep "$1")
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old_storage_state=$(cat $last_state_file)
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if [ "$new_storage_state" = "$old_storage_state" ]; then
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sync
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sdparm --flexible --readonly --command=stop /dev/$1 2>&1 > /dev/null
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fi
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echo "$new_storage_state" > $last_state_file
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