Hello Martin,
That is exactly the reason why we would need to modularise this. Access
characteristics between different transport protocols can differ
significantly and thus are susceptible to different indicators,
tolerances and other variations that would need a different config
setup. You
eed to dive into the stacks or seek help from the maintainers
of these code-bases to know more of what the options are.
Cheers
Erwin
On Tue, 2021-12-07 at 09:11 +, Martin Wilck wrote:
> On Tue, 2021-12-07 at 09:19 +1000, Erwin van Londen wrote:
> > Hello Martin, Muneendra.
> >
Hello Martin, Muneendra.
As I kicked this discussion off in the beginning of the year and seeing
the Muneendra and the broadcom people have come up with the first
iteration I can only applaud the efforts. On behalf of all storage and
linux administrators I would say "Thank you".
As for your
On Tue, 2021-05-11 at 00:15 +, Chaitanya Kulkarni wrote:
> Hi,
>
> * Background :-
> -
> --
>
> Copy offload is a feature that allows file-systems or storage devices
> to be instructed to copy files/logical blocks without
On Fri, 2021-04-30 at 19:44 -0400, Ewan D. Milne wrote:
> On Wed, 2021-04-28 at 10:09 +1000, Erwin van Londen wrote:
> > > >
>
> Perhaps an array might abort I/Os it has received in the Device
> Server when
> something changes. I have no idea if mos
On Wed, 2021-04-28 at 06:34 +, Martin Wilck wrote:
> On Wed, 2021-04-28 at 11:01 +1000, Erwin van Londen wrote:
> >
> > The way out of this is to chuck the array in the bin. As I mentioned
> > in one of my other emails when a scenario happens as you described
> &g
On Tue, 2021-04-27 at 10:21 +0200, Hannes Reinecke wrote:
> On 4/27/21 10:10 AM, Martin Wilck wrote:
> > On Tue, 2021-04-27 at 13:48 +1000, Erwin van Londen wrote:
> > > >
> > > > Wrt 1), we can only hope that it's the case. But 2) and 3) need
> > > &g
On Tue, 2021-04-27 at 16:41 -0400, Ewan D. Milne wrote:
> On Tue, 2021-04-27 at 20:33 +, Martin Wilck wrote:
> > On Tue, 2021-04-27 at 16:14 -0400, Ewan D. Milne wrote:
> > >
> > > There's no way to do that, in principle. Because there could be
> > > other I/Os in flight. You might
On Mon, 2021-04-26 at 13:16 +, Martin Wilck wrote:
> On Mon, 2021-04-26 at 13:14 +0200, Ulrich Windl wrote:
> > > >
> > >
> > > While we're at it, I'd like to mention another issue: WWID
> > > changes.
> > >
> > > This is a big problem for multipathd. The gist is that the device
> > >
Hello Muneendra,
On Mon, 2021-04-05 at 11:00 +0530, Muneendra Kumar M wrote:
> Hi Erwin,
> Below are my replies.
>
> On Thu, 2021-04-01 at 10:16 +, Martin Wilck wrote:
> > On Thu, 2021-04-01 at 12:48 +1000, Erwin van Londen wrote:
> > > >
> > > >
Hello Martin,
On Thu, 2021-04-01 at 10:16 +, Martin Wilck wrote:
> On Thu, 2021-04-01 at 12:48 +1000, Erwin van Londen wrote:
> > >
> > > Benjamin has added a marginal_path group(multipath marginal
> > > pathgroups) in
> > > the dm-multipath.
> &
Hello Muneendra
On Wed, 2021-03-31 at 16:18 +0530, Muneendra Kumar M wrote:
> Hi Martin,
> Below are my replies.
>
>
> > If there was any discussion, I haven't been involved :-)
>
> > I haven't looked into FPIN much so far. I'm rather sceptic with
> > it's
> usefulness for dm-multipath. Being
Hello Hannes,
Thanks for responding.
On Wed, 2021-03-31 at 09:25 +0200, Hannes Reinecke wrote:
> Hi Erwin,
>
> On 3/31/21 2:22 AM, Erwin van Londen wrote:
> > Hello Muneendra, benjamin,
> >
> > The fpin options that are developed do have a whole plethora of
> &
and improve overall
performance.
Regards,
Erwin
On Fri, 2021-03-26 at 16:45 +0530, Muneendra Kumar M wrote:
> Hi Benjamin,
> My replies are below
>
>
> On Tue, Mar 23, 2021 at 05:52:33PM +1000, Erwin van Londen wrote:
> > > Hello All,
> > >
> > > Just wonder
Hello All,
Just wondering if there were any plans to incorporate FPIN
congestion/latency notifications in dm-multipath to disperse IO over
non-affected paths.
Regards,
Erwin van Londen
--
Kind regards,
Erwin van Londen
http://erwinvanlonden.net
PGP key: http://erwinvanlonden.net/pgp-key-id
I've been doing SAN troubleshooting for 20 years and the majority of
the problems is related to these intermittent issues of frame
corruption and/or discards. Actual flipping paths where a target goes
into and offline/online state is far less common.
Your feedback is appreciated.
Thank you
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