Linked by Thom Holwerda on Thu 26th Mar 2009 17:07 UTC, submitted by Anil Gulecha
Sun Solaris, OpenSolaris ZFS and unbreakable upgrades were introduced in an earlier article. XercesTech has written a detailed article on how apt-get and zfs join forces to provide a worry-free upgrade experience. "While some operating systems provide the ability to roll back changes, they usually require significant time, or an experienced user with some external repair tools. The goal here is to be instant, if something goes wrong with an upgrade, it should be possible to boot into the old system without running any terminal commands, booting any rescue system or installation disc, or otherwise manually rolling things back."
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RE[4]: Comment by Laurence
by Slapo on Fri 27th Mar 2009 06:53 UTC in reply to "RE[3]: Comment by Laurence"
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Maybe Debian GNU/kFreeBSD could fit the bill?

I'm itching to try it on a test box, I just need to get my hands on one.
VirtualBox isn't quite it if I want to actually use it.

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