Jesse Guardiani wrote: > Jesse Guardiani wrote: > >> Jesse Guardiani wrote: >> >>> Darryl Okahata wrote: >>> >>>> Jesse Guardiani <jesse_at_wingnet.net> wrote: >> >> [...] >> >>> Now, if I can just get that lousy CD-ROM to not crash my system on >>> resume I'll be a VERY happy man... I did some more testing on this last night, and it appears that the atacontrol detach method _does_ work, but only in specialized circumstances. I have modified my /etc/rc.suspend to call 'atacontrol detach 1' _before_ it calls 'apm -z'. I have also modified my /etc/rc.resume to call 'atacontrol attach 1' _after_ syncing the disks. If anyone wants to have a look at these files, just let me know. When it works: -------------- 1.) I have to be looking at a VTY, not X. (Geez. Just when I thought I got around this with the kernel option SC_NO_SUSPEND_VTYSWITCH...) 2.) The /dev/acd0 device has to be unused, otherwise the kernel panics. This means I have to stop playing any CDs and terminate the CD playing program. I assume this means that the device has to be _not_ open, but I haven't really performed much testing in this area. When it doesn't work: --------------------- 1.) If I try to suspend while looking at X, the kernel panics and auto- reboots. 2.) If I try to suspend while anything is accessing the acd0 device the kernel panics and auto-reboots. Those things aside, I can usually suspend my machine within 8 seconds, as long as the hard disk isn't under high load. And it comes back on-line in under 3 seconds. I've tested this 6 or 7 times in a row, swapping back and forth from X before doing the next suspend, so I'm pretty confident that it's reliable. A plus is that the little green "drive in use" light on the side of my Ultrabay goes off when the machine is in suspend mode, and since I call: atacontrol attach 1 Upon resume from suspend, I could very easily swap out my drives while in suspend mode. I've tested this. Pretty neat! Things I would like to improve upon: ------------------------------------ 1.) I need to find some way to automatically kill any processes that are using (or have opened) the /dev/acd0 device BEFORE executing apm -z from /etc/rc.suspend. If I can accomplish that, then I will have successfully eliminated the "stupid human" factor that sometimes causes me to forget I have a program running that uses the /dev/acd0 device. Does anyone have any ideas here? 2.) I'd love to automate (or do away with) the process of switching to a VTY from X before executing 'atacontrol detach 1'. Can anyone give me a _reason_ why I have to do that? It just seems odd to me. Thanks! -- Jesse Guardiani, Systems Administrator WingNET Internet Services, P.O. Box 2605 // Cleveland, TN 37320-2605 423-559-LINK (v) 423-559-5145 (f) http://www.wingnet.netReceived on Fri Jun 20 2003 - 04:44:25 UTC
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