On Friday 02 April 2010 14:45:29 Volker Armin Hemmann wrote: > On Freitag 02 April 2010, meino.cra...@gmx.de wrote: > > Neil Bothwick <n...@digimed.co.uk> [10-04-02 14:08]: > > > On Fri, 2 Apr 2010 13:04:53 +0200, meino.cra...@gmx.de wrote: > > > > only to be sure to have understood everything correctly: > > > > Suggestion is to create for example one root partition and a swap > > > > partion. And I will create on big "rest of the disk"-partition. > > > > The last one will be subdivided with LVM into portions as needed. > > > > > > Yes. > > > > > > > Since the last big partition is big due to physical reasons (not for > > > > logical one): What will happen, if -- for example -- one portion will > > > > be not unmounted cleanly and while booting/checking fails to recover? > > > > Are all others damaged/lost? > > > > > > No, because the failure you describe is at the filesystem level. Even > > > the volume containing that filesystem will retain integrity, only the > > > filesystem itself will be corrupted. As you have left free space on > > > the volume group, you can just create a new volume, format it and copy > > > over everything you can recover from the broken filesystem before > > > deleting it. > > > > Hi Neil, > > > > yes, sounds good, very good. > > Last question: How heavy is the performance impact of such a setup ? > > seriously lvm sounds nice. But it isn't. It easily breaks.
Can you back that up with some facts? I use LVM on many machines and have never had it breaks. I'm also quite ruthless on some machines with how I use it - manipulating volumes with apparently gay abandon. I attribute this lack of failure to me understanding how LVm works and using it as designed, without trying to be cute and/or clever. > You want a save setup? Go raid5 or raid6. As a bonus - you can get more > space if you need it by just adding another disk. And you are not > depending on some complex stuff to get it working. The various raid levels do not address the problem that LVM solves - how to rapidly create and manipulate sub-volumes. If your /var/log fills up, how would you add an extra 10G to it to gain breathing space without using something LVM-like (evms is for example LVM-like. So are the native HP-UX tools)? -- alan dot mckinnon at gmail dot com
