Christof Schmitt wrote:
zfcp is one of the drivers that don't have ramp-up/down mechanism in
place. And i am trying to understand what is required here. Is there
currently work being done to get queue_depth ramp-up/down in the
midlayer?
No work started - but desired.
I'd recommend, rather than implementing it in zfcp, implement it in the
midlayer for everyone.
If we moved code like that to the scsi layer, then is all the is needed
is a interface to config this?
Yep. As mentioned, figuring out what algorithm, for what device and
configuration, will be the more interesting thing.
If the LLDs that currently have a private ramp-up/down mechanism in
place use a similar strategy, would it make sense to first move them
to common code that can be activated from a LLD? And later refine it
with device-specific behaviour?
Yes.
-- james s
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