On 6/15/2011 5:56 PM, John R. Dennison wrote:
On Wed, Jun 15, 2011 at 05:46:20PM -0500, Les Mikesell wrote:
I've seen vmware disk emulation -> LVM -> partitions run very, very slowly. Didn't diagnose it beyond thinking "if it hurts, don't do it", though. And I don't remember if it was a sparse disk or not, but it probably was. Could have been an issue in the way the growing drive space is allocated on the physical side.
Trainwreck and should not be done in production environments; if this is indeed the cause of "1-hour" installs alternatives should be found as that is simply too pathetic for mere words.
Agreed, but testing something on vmware is a likely first step toward production and bad performance on the first look can warp your opinions. I've mostly avoided LVM since seeing that (and, I think, early problems with duplicate volume names when moving disks around) but it could easily have been the physical seek pattern created when the space was allocated on use in the underlying file.