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.
You're not using the filesystem the way you should, if you expect to be
able to kill the power and not lose data.
> 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.
Mount the filesystem sychronously if you want this.
> 2. Keep open files in a state where it doesn't matter if they where
> improperly closed (if possible).
Mount the filesystem read-only if you want this.
> 3. Swap may not contain anything which can't be discarded. Otherwise
> swap has to be treated as ordinary disk space.
The kernel doesn't care about what's in swap. Fix your applications if they
do.
Charles
-- ----------------------------------------------------------------------- Charles Cazabon <linux@discworld.dyndns.org> GPL'ed software available at: http://www.qcc.sk.ca/~charlesc/software/ Any opinions expressed are just that -- my opinions. ----------------------------------------------------------------------- - 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/
This archive was generated by hypermail 2b29 : Fri Mar 23 2001 - 21:00:12 EST