[Lustre-discuss] Question about "lfs find"

[Michael Barnes]

Lustre users,

With lfs find, is it faster/better to do multiple lfs find's with one --obd or one lfs find with multiple --obd flags?

I ask, because I made a mistake and ran a lone lfs with a single --obd argument on an OST that I didn't intend to drain, and the erroneous lfs find was *much* quicker at migrating data then the lfs find with multiple --obd flags pointing to different OSTs.

Is this just a fluke or does lfs find work better with single --obd flag vs multiple ones?

Before my mistake, I would assume that they would be the same or that a lfs find with multiple --obd flags would be faster, but it seems as though the evidence points to the contrary.

Does anyone have any experience or knowledge of lfs find and what is the best way to migrate data off of multiple OST/OSSes?

TIA,

-mb

--
+-----------------------------------------------
| Michael Barnes
|
| Thomas Jefferson National Accelerator Facility
| Scientific Computing Group
| 12000 Jefferson Ave.
| Newport News, VA 23606
| (757) 269-7634
+-----------------------------------------------