Ok, my existing share is NOT LVM. Is it possible to convert a non-LVM into an LVM without backing up the data? (I don't have anywhere big enough to save the data to for a backup -- my new storage is only half the size of my old storage).
On Wed, Jul 14, 2010 at 2:11 PM, Emmanuel Florac <[email protected]> wrote: > Le Wed, 14 Jul 2010 09:42:26 -0700 vous écriviez: > >> Question is: >> 1) should I try and expand the existing RAID6 volume (over 15 740GB >> disks presently), or just add a second volume? > > It's risky to expand a single volume across several physical device. > >> 2) If I add a second volume, how best do I tell pvfs2 to use this? Or >> should I try and LVM it with the old volume? (Can I even do that?) > > Yes, definitely use LVM to aggregate the various volume. Don't stripe > across volumes, so that an unavailable/failed device doesn't fail the > whole setup. > >> 3) Do I need to mess with the MetaHnadle ranges? (The amount of space >> will be the same on all 3 servers) > > If you simply extend existing PVFS2 underlying volumes, you don't need > to change anything. > >> 4) is there any manual rebalancing I need to do? > > If you create new pvfs storage space (not recommended), you'd need to > scan all files, run pvfs2-stat on them, and defragment them if their > number of datafiles is less than the number of pvfs2 devices. > > That's precisely why it's better to simply expand the existing > volumes... :) > > -- > ------------------------------------------------------------------------ > Emmanuel Florac | Direction technique > | Intellique > | <[email protected]> > | +33 1 78 94 84 02 > ------------------------------------------------------------------------ > _______________________________________________ Pvfs2-users mailing list [email protected] http://www.beowulf-underground.org/mailman/listinfo/pvfs2-users
