add BIO_NORETRY flag, implement support in ata_da, use in ZFS vdev_geom
julian at freebsd.org
Fri Dec 29 05:29:00 UTC 2017
On 24/11/17 6:30 pm, Andriy Gapon wrote:
> Anyone interested is welcome to join the review.
I see you closed the review.
However don't stop working with that problem..
It's still something that a worth a solution, even if not exactly That
Maybe a generic idea through the block IO layer of transaction
We did face this issue in a BSD4.3 variant in 1990 where a single disk
would result in a cascading shockwave of slowdowns that took some time
The issue even comes up in networking too, especially with realtime video
where "don't bother, we missed the window" comes into play.
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