Hi, I'm attaching an ebuild for the IBM HDAPS driver currently in development at http://hdaps.sourceforge.net, which is used to enable monitoring of the "IBM Hard Drive Active Protection System" sensor, conmmonly refered to as a "Hard Drive Airbag". The driver is still very young, but it's proving useful for those of us with newer IBM Thinkpads and a yen for the bleeding edge. I suggest putting it into app-laptop where the other Thinkpad-specific drivers reside. My thanks to Henrik Brix Andersen, who took my first attempt and writing an ebuild from scratch and turned it into something useful. Thanks, Josh
Created attachment 64222 [details] HDAPS Alpha driver ebuild hdaps-0.02.ebuild
Created attachment 70018 [details] latest version (20050914-02) of hdaps This is the latest version of hdaps that works fine on my T41p with 2.6.13.
Created attachment 70029 [details] ebuild for hdapsd - the daemon for the hdaps driver The hdaps daemon together with the disk-freeze patch that can be found at the hdaps-devel mailinglist actually makes use out of the hdaps driver. The hdaps daemon can park the hard disk in case the laptop is shaken. I additionally wrote an initscript for hdapsd. In the configuration file for the initscript you can set a threshold for hdapsd. The lower the threshold is the earlier the heads of the disk get parkek. Steps: 1. Patch your kernel with the disk-freeze patch. 2. Install the hdaps kernel driver 3. Extract hdapsd.tar.bz2 into the category "app-laptop" to your overlay unmask hdapsd and emerge it. description of the disk-freeze patch (taken from the hdaps-devel mailinglist): I would like to submit the latest disk protection (a.k.a. parking and freezing) code from the hdaps-devel side for comment, along with a brief overview of what's in the patch - During initialisation, disk drivers with 'protect' helper functions (currently ide and libata) fill in two new function pointers in the queue structure. A sysfs 'protect' queue attribute is then created in the block layer for devices who's lower level drivers have registered these helpers. When a value (in seconds) is written to the protect attribute, the block layer code calls the driver 'protect' helper function. This helper parks/suspends the disk, and then stops the queue. Control then returns to the block layer which re-uses the plugging timer to set an automatic timeout to restart the queue. When 0 is written to the protect attribute, or the timer expires, the queue is restarted using the 'unprotect' helper function, and the plugging timer is restored. This interface is intended to be used by a daemon process, that monitors the hdaps driver output for excessive changes in acceleration, and keeps the device parked and the queue stopped until the values become normal. Patch applies to 2.6.14-rc3 (also 2.6.13.x), and requires libata_passthru.. Regards, Jon.
Created attachment 72872 [details] hdapsd-0.1.tar.bz2
Created attachment 72873 [details] hdapsd-0.1-ebuild.tar.bz2 Updated digest file of ebuild. Extract package to the category app-laptop of your portage overlay.
Comment on attachment 72872 [details] hdapsd-0.1.tar.bz2 hdapsd source
Get the disk-freeze patches from: http://thinkwiki.org/wiki/HDAPS#Security_.26_Safety
hdaps is now part of the mainstream kernel as of 2.6.14 - this ebuild is no longer necessary.
Created attachment 77468 [details] hdapsd-20060117.tar.bz2 Updated daemon from http://www.dresco.co.uk/hdaps and adjusted initscript. Just extract the package to your ${PORTDIR_OVERLAY}/app-laptop and emerge hdapsd.
Created attachment 79112 [details] hdapsd-20060207.tar.bz2 improved version of hdapsd * Better handling of diagonal movement: use Pythagoras's theorem
Created attachment 79112 [details] hdapsd-20060207.tar.bz2 improved version of hdapsd * Better handling of diagonal movement: use Pythagoras's theorem when comparing to threshold. * The kernel patch already handles unfreeze timeout, so rely on it instead of duplicating that functionality (simplifies the code). * Constify some numbers, and increase sampling frequency from 10Hz to 50Hz (IBM says typical laptop falling time is just 200ms, and there's a unloading latency) * Rename sanity_check() to read_protect(), add error checking.
This bug should be reopened (and renamed). This is about hdapsd, a daemon reacting to the disk behaviour, not hdaps reading support (which is in the kernel). Ruben, do you know which patch exactly should be used on the a 2.6.15? Is there still a neccessity for patching it? Maybe we should get that patch in gentoo-sources then.
Please open a seperate enhancement request for the user space hdapsd daemon.
That's bug 119845 then.
*** Bug 137338 has been marked as a duplicate of this bug. ***
