51 lines
1.6 KiB
Markdown
51 lines
1.6 KiB
Markdown
---
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title: "Reduce the writing rate on SD Card"
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date: 2015-04-22
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url: reduce-the-writing-rate-on-sd-card
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layout: post
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category: Hacking
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---
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[](/img/blog/reduce-the-writing-rate-on-sd-card.jpg)
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Firstly, I'd rather tell you that you should have only the boot system on the SD Card, and all the rest on an extern device in order to preserve your card.
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But, when it's not possible, or not handy, you really should reduce the numbers of readings and writings on your device.
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First of all, sometimes the [Swap](http://www.wikiwand.com/en/Swap) is enabled. We'll disable it :
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`# dphys-swapfile swapoff && dphys-swapfile uninstall`
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From now, the file :
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> /var/swap
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... may no longer exists.
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---
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Now, we'll remove the permanent logs system writing, with [Ramlog](http://www.tremende.com/ramlog/).
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Let's install it in one line :
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`# apt-get install rsync lsof && wget http://www.tremende.com/ramlog/download/ramlog_2.0.0_all.deb && dpkg -i ramlog_2.0.0_all.deb`
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We'll add the launching and stopping of the script at the beginning and ending of your session. Edit :
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> /etc/init.d/rsyslog
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... and add the content needed as the following :
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> \# Required-Start: $remote_fs $time ramlog
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> \# Required-Stop: umountnfs $time ramlog
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Set the script at the boot and reboot the system now :
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`# insserv && reboot`
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Check if the program is running with :
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`# /etc/init.d/ramlog status`
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**:warning: If your system is shutting down, for example, due to a supply outage, you won't have any system log of your session saved :warning:**
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