On Sun, 2011-11-13 at 15:58 +0100, Reindl Harald wrote: > > yes, this should be only a option and never made as default > > LVM is for most peopole not useful especially on a notebook > where you have nothing to extend with a second disk and > remember that you have lost the game if you extend a LVM o > over several disks and of them dies without RAID Rubbish. I've use LVM on notebooks for years now and used it with success. LVM is more than a "partition emulator". It gives you cloning, snapshots and much more at your finger tips, to make creating VMs and backups a lot easier. I've seen so many misconceptions being communicated about LVM here and other mailing lists. Usually done in ways that directly contradicts basic features of LVM. Some features that you may not be aware of: Striping and mirroring can be done through LVM alone. Another misconception is performance is degregated. No - LVM is not "another" layer. It's replacing the layer you have. There's no new layer with the device mapper - it doesn't first map LVM then your partition. Performance numbers being publishes have proven that you're not having a penalty. And if the benchmark for usability ARE laptops - what IO performance are you talking about that can be measured? http://lists-archives.org/linux-kernel/27323152-ext4-is-faster-with-lvm-than-without-and-other-filesystem-benchmarks.html All in all - I'm not opposed to having LVM as an option. But it should be discouraged. There's no real penalty of using LVM but there's a lot by NOT using it. From better backups, to being able to test changes without risking loosing it all. I would argue that anaconda by default shouldn't allocate the whole VG but leave some room for snapshots. Otherwise you don't give people the chance of actually using some of the very cool LVM features that help even us laptop users. -- Best Regards Peter Larsen Wise words of the day: Problem solving under Linux has never been the circus that it is under AIX. -- Pete Ehlke in comp.unix.aix
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