Messages in this thread | | | Date | Fri, 23 Mar 2001 16:28:02 +0100 | From | David Balazic <> | Subject | Re: Linux should better cope with power failure |
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I had a similar experience: X crashed , hosing the console , so I could not initiate a proper shutdown.
Here I must note that the response you got on linux-kernel is shameful.
What I did was to write a kernel/apmd patch , that performed a proper shutdown when I press the power button ( which luckily works as long as the kernel works ).
Ask me for details, if interested. The patch was for 2.2.x IIRC, so I would have to rewrite it almost from scratch.
Otto Wyss (otto.wyss@bluewin.ch) wrote :
> Lately I had an USB failure, leaving me without any access to my system > since I only use an USB-keyboard/-mouse. All I could do in that > situation was switching power off and on after a few minutes of > inactivity. From the impression I got during the following startup, I > assume Linux (2.4.2, EXT2-filesystem) is not very suited to any power > failiure or manually switching it off. Not even if there wasn't any > activity going on. > > Shouldn't a good system allways try to be on the save side? Shouldn't > Linux try to be more fail save? There is currently much work done in > getting high performance during high activity but it seems there is no > work done at all in getting a save system during low/no activity. I > think this is a major drawback and should be addressed as fast as > possible. Bringing a system to save state should allway have a high priority. > > How could this be accomplished: > 1. Flush any dirty cache pages as soon as possible. There may not be any > dirty cache after a certain amount of idle time. > 2. Keep open files in a state where it doesn't matter if they where > improperly closed (if possible). > 3. Swap may not contain anything which can't be discarded. Otherwise > swap has to be treated as ordinary disk space. > > These actions are not filesystem dependant. It might be that certain > filesystem cope better with power failiure than others but still it's > much better not to have errors instead to fix them. > > Don't we tell children never go close to any abyss or doesn't have > alpinist a saying "never go to the limits"? So why is this simple rule > always broken with computers? > > O. Wyss
-- David Balazic -------------- "Be excellent to each other." - Bill & Ted - - - - - - - - - - - - - - - - - - - - - - - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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