ZVOL with volblocksize=64k+ results in data corruption [was Re: Resolving errors with ZVOL-s]

[Wiktor Niesiobedzki]

2017-09-22 10:46 GMT+02:00 Andriy Gapon <avg at freebsd.org>:

> On 21/09/2017 23:00, Wiktor Niesiobedzki wrote:
> > And gave them more than 24h of work with no apparent errors (I also moved
> > other volumes to 4k and they did not show any checksum errors for more
> than
> > 2 weeks).
> >
> > I was running with volblocksize=128k from January this year. The problem
> > started to appear only after I updated from 11.0 to 11.1.
> >
> > Should I file bug report for this? What additional information should I
> > gather?
>
> Are you able to patch your version of FreeBSD?
> Could you please try https://svnweb.freebsd.org/changeset/base/323918
> and see if it makes things better?
>
>
My tests are running for more than 48h and no errors till now. Usually
after 6 hours I already saw failures so I it looks like you've nailed it.

Thanks,

Wiktor