On Fri, 16 Jul 2004, Bartek Kania wrote: > -----BEGIN PGP SIGNED MESSAGE----- > Hash: SHA1 > > > I'm trying to use laptop_mode to get my disks to stay down to save > > energy in kernel 2.6.7. I used the script from kernel 2.6.7, put it in > > sbin. I also compiled the monitor in laptop_mode.txt too. When I run > > laptop_mode it doesn't seem to help much with the disks. What's the > > problem? > <snipp> > > Using the bit block that reports to dmesg I get kjournald as the process > > that's dirtying the node. > > What filesystems are you using? > Please attach the output from mount before and after running the laptop-mode > script. > When the script runs it should change the commit-time of the filesystem to > something large, to prevent kjournald to flush the journal every couple of > seconds.
A while ago, I looked at the code in one of the filesystems (either ext3 or jfs - the two fs's I use), and I wasn't convinced that the code correctly saved the -o remount,commitinterval value. I convinced myself it only got set at mount time, not at remount time - but I am very likely wrong, given that I am not a kernel hacker, and probably missed some subtlety. I have never had any luck with the laptop mode patches. Dammit. -- TimC -- http://astronomy.swin.edu.au/staff/tconnors/ A sysadmins description of life: Even if the underpowered inter-continental links could take it, you'd see a routing nightmare. BGP packets would be flying around in circles panicking, and any sane network administrator would lock him or herself in a small room and whimper until it was all over.
