[dm-devel] [PATCH 0/4] scsi_dh: Make scsi_dh_activate asynchronous

[Christoph Hellwig]

On Wed, Oct 21, 2009 at 09:22:40AM -0700, Chandra Seetharaman wrote:
> Hello All,
> 
> Currently, device handlers process path activation in series. This leads
> to a lot of time delay when more than 100 luns are involved. For example,
> with lsi rdac 100+ luns take about 12-15 minutes. This was found by Moger
> Babu of LSI.

So what happened to the suggestion to just switch over per target
instead of per lun?   It's the obviously much better way to do, and
unless there are bugs in the hardware preventing it from working it
should be the way to go.