Permamently harddisk activities with XVDR plugin

[dreasb]

The XVDR plugin writes always into the file channelcache.data. Therefore a channelcache.bak file will be created and deleted afterwwards. The periodic timespan is a few seconds, so that my hard drive will never switch to standby mode.

As a proposal: Make it possible to configure the channelcache.data file. So I can move the directory to my ramdisk or move the channelcache.data file to a temp directory like /var/tmp. From my point of view it is not a good idea to keep tmp files in the configuration directory /etc/vdr/plugin/xvdr/...

Tested with:

• Gentoo 64 Bit
• XBMC 12 rc3
• Latest xvdr plugin for vdr
• Latest xvdr plugin with xbmc
• make sure that xbmc is running and watching live-tv
• show the hard disk dump. you must enable it with: echo 1 > /proc/sys/vm/block_dump (you can disable with echo 0), and you will find entries like: kernel: VDR XVDR (channelcache.data.bak) on sda1 kernel: VDR XVDR WRITE block 17044232 on sda1 (128 sectors) in your log file (for me /var/log/messages) depends on your logging system

[pipelka]

Yes. The channel cache file is written every minute (with a connected client). But this is not a temporary file, its an autogenerated configuration file (like channels.conf). It contains channel and stream information to speedup switching times. I could change the code to write it only if there are changes and / or increase the interval (afaik, the channels.conf is written every 10 minutes).

[dreasb]

Can you move the temporary file to the tmp folder? I believe the interval is not the problem and the iterative check if the file was modified is not necessary. My tmp folder is mounted to a ramdisk folder.

[pipelka]

I just found that VDR also defines a "cache" directory. Would this be an option ?

[dreasb]

You mean /var/cache/vdr? Yes this is a good option

[pipelka]

Ok. I'll move it into the cache directory.