On 03/28/2011 10:35 AM, Mick wrote: > 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
Great! Thanks. That did indeed solve the problem.
