Messages in this thread | | | Date | Mon, 22 May 2006 12:54:51 +0200 (MEST) | From | Jan Engelhardt <> | Subject | Re: [IDEA] Poor man's UPS |
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>> You really want a system, which freezes for 10-20 seconds every 5 minutes, >> and thaws again when the image is written? > > The snapshot could be taken in the background, by marking all pages read-only, > starting a thread to write them to disk, and continuing normal processing. > > Such systems have been implemented in the past, see for example > http://www.eros-os.org/. >
Another one is VMware's background snapshot feature. Granted, it writes "quite much" (IMO) to disk, but it's better than a foreground snapshot. :)
Jan Engelhardt -- - 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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