add BIO_NORETRY flag, implement support in ata_da, use in ZFS vdev_geom
Julian Elischer
julian at freebsd.org
Fri Dec 29 05:29:00 UTC 2017
On 24/11/17 6:30 pm, Andriy Gapon wrote:
> https://reviews.freebsd.org/D13224
>
> Anyone interested is welcome to join the review.
> Thanks.
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
solution.
Maybe a generic idea through the block IO layer of transaction
requirements.
We did face this issue in a BSD4.3 variant in 1990 where a single disk
error
would result in a cascading shockwave of slowdowns that took some time
to resolve.
The issue even comes up in networking too, especially with realtime video
where "don't bother, we missed the window" comes into play.
More information about the freebsd-fs
mailing list