On Wed, 2009-07-22 at 18:16 -0700, Ian Forde wrote:
> On Wed, 2009-07-22 at 11:16 +0200, Coert Waagmeester wrote:
> > The highest speed I can get through that link with drbd is 11 MB/sec
> > (megabytes)
>
> Not good...
>
> > But if I copy a 1 gig file over that link I get 110 MB/sec.
>
> That tells me that the network connection is fine. The issue is at a
> higher layer...
>
> > Why is DRBD so slow?
>
> Let's see...
>
> > common {
> > protocol C;
> > syncer { rate 80M; }
> > net {
> > allow-two-primaries;
> > }
> > }
>
> You want allow-two-primaries? That implies that you're using something
> like ocfs2, but that's probably immaterial to the discussion... Here's a
> question - do you have another syncer statement in the resource
> definition that's set to a lower number? That would definitely throttle
> the sync rate...
>
> -I
I occasionally do migration from one dom0 to the other
I do not have clustered file sytems, so I make sure that two are only
primary during the migration.
I have no automation yet, I do it all manually to be sure.
I only have one syncer defenition, and according to the drbd manual that
is the rate for full resyncs?
>
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