On Monday 28 March 2011 09:11:51 Coert Waagmeester wrote: > Hello all, > > Running a box with 2x1TB software raid disks. > A while back I read up about disk write caching and it's pros/cons. > > I then decided to disable it on my box. > Edited /etc/conf.d/hdparm and added -W0 for sata_all_args. > And added it to the default runlevel. > > It works, on bootup it turns off write caching. > But a while later when KDE is up and running and I check with hdparm -W > /dev/sd? write caching is on again. > > Now, I have two questions, > How can I find out what turned it back on, and how can I prevent it? > > Is it necessary/prudent to turn it off in the first place? > > At the moment I run a cron job that checks every 10 minutes and turns it > off if it is enabled. But that feels like a somewhat ugly solution...
Try touch /etc/pm/power.d/harddrive to see if it works. Also read this thread and the bugs mentioned in there: http://thread.gmane.org/gmane.linux.gentoo.user/232788/focus=233098 -- Regards, Mick
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