[EMAIL PROTECTED] writes: > >Instead, PPs on AIX are a way to segment storage on a single disk so > >that you can grow LVs when you need to and without dedicating storage > >to them ahead of time. > > I understand that bit; it's just that we never like to fragment our data > that way.
As far as a user is concerned, there's no noticable fragmentation. > You can more or less safely grow ufs filesystems now too; Only if you've got unallocated contiguous cylinders past the end of the existing UFS partition. If you don't (and, by default, most users don't have this), then there's nothing much you can do. You can unmount, backup, redo everything, and restore. You might have some luck with third-party tools that can copy Solaris partitions around. But nothing comes with the system that'll help. > I know that > this was one of the drawbacks of Solaris over AIX; however, it always > seemed silly to reserve space outside partitions, especially since > having as few partitions as possible seems better from a maintenance > standpoint. Sure; I agree that having a single partition (if you can manage it) is probably best. But _if_ you've decided that you want multiple partitions, you're usually pretty stuck. > And not having the intermediate layer doesn't give you the additional > fragmentation headache; that's a problem when assigned fixed bits of > storage to the filesystem and when you do not allow the filesystem to > know about the layering (not sure what AIX allows there). "Headache?" I'm not sure I follow. You just assign PPs to LVs. The assignment is essentially arbitrary, and is normally just done automatically -- the OS chooses a strategy for allocating them and can try to fit contiguous ones if it wants to. The only "headache" I see here is that if you have Solaris UFS partitions, and you didn't plan for slice 0 to grow past (say) 3GB but you now need it to do that in order to perform an upgrade, you're in pretty deep. -- James Carlson, KISS Network <[EMAIL PROTECTED]> Sun Microsystems / 1 Network Drive 71.232W Vox +1 781 442 2084 MS UBUR02-212 / Burlington MA 01803-2757 42.496N Fax +1 781 442 1677 _______________________________________________ opensolaris-discuss mailing list [email protected]
