This data is really not important. When I tried to remove it I keep getting, "Numerical result out of range".
Is there something else I can do? On Wed, Mar 25, 2009 at 12:50 PM, Brian J. Murrell <[email protected]> wrote: > On Wed, 2009-03-25 at 11:29 -0500, Robert Olson wrote: >> I thought I had read at some point that there is a performance hit >> associated with putting the OST on a LV; > > There is nothing particular about an OST on an LV that makes it perform > any worse than anything else on an LV. That said I don't know what > overhead there is in using an LV over a raw block device. I've been > using LVs exclusively on all of my (non Lustre) systems for many many > years and I've never felt that they were unacceptably slow. > > You might want to benchmark just to have hard numbers on your side. > Benchmarking LVs against the raw block device should be trivial. > >> or is that just the case when there are snapshots in play? > > Yes, there is definitely a penalty when snapshots are in play since > every write to a block on the origin that has not been written since the > snapshot is actually two writes to copy (or move -- I'm not sure) the > block to the snapshot before writing the new data in the origin. > >> Do you recommend using LV's in general when configuring the OST? > > We don't recommend one way or the other. It's really a matter of > personal choice. > > b. > > > > _______________________________________________ > Lustre-discuss mailing list > [email protected] > http://lists.lustre.org/mailman/listinfo/lustre-discuss > > _______________________________________________ Lustre-discuss mailing list [email protected] http://lists.lustre.org/mailman/listinfo/lustre-discuss
