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Configuring Watchdog and Automatic Hard Drive Sleep on RPi

2019-11-05

软件安装与配置

RPi

中文版

rpi 3b watchdog

Automatic sleep for idle hard drives

Please modify the watchdog device based on your CPU model#

hdparm#

Install hdparm (omitted)

Test hdparm

hdparm link

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sudo hdparm -y /dev/sda1

If there’s no error, it’s supported

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sudo hdparm -I /dev/sda1|grep cache

If you see ”*”, caching is supported

Edit hdparm

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sudo nano /etc/hdparm.conf

Add

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/dev/sda1 {
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write_cache = on
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spindown_time = 120
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}

If caching isn’t supported, don’t add the write_cache line

The delay below is calculated as: idle sleep time (minutes) * 60 / 5

watchdog#

Install watchdog (omitted)

Load watchdog

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sudo modprobe bcm2835_wdt
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sudo nano /etc/modules
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bcm2835_wdt

Edit the configuration

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sudo /etc/watchdog.conf

Modify

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max-load-1=24
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watchdog-device = /dev/watchdog
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watchdog-timeout=20
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temperature-sensor      = /sys/class/thermal/thermal_zone0/temp
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max-temperature = 85000

Start

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sudo systemctl enable watchdog.service
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sudo chkconfig watchdog on

Bonus: a fork bomb#

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:(){ :|: & };:

Configuring Watchdog and Automatic Hard Drive Sleep on RPi

https://tski.uk/blog/en/rpi-watchdog-config/

作者

Tokisaki Galaxy

发布于

2019-11-05

许可协议

CC BY

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Please modify the watchdog device based on your CPU model