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Date: Thu, 30 Aug 2018 20:04:06 -0700
From: "M. Casper Lewis" <mclewis@genomecenter.ucdavis.edu>
To: Grant Gray <grant@gray.id.au>
Cc: freebsd-fs@freebsd.org
Subject: Re: Failing ZFS log devices/panic
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On Thu, Aug 30, 2018 at 07:58:05PM -0700, M. Casper Lewis wrote:
> On Fri, Aug 31, 2018 at 11:35:12AM +1000, Grant Gray wrote:
> > I've currently got an issue between some HGST SATA disks and a SAS3008 HBA
> > where mixing SAS and SATA disks on the same port results in intermittent
> > I/O errors on the HGST SATA disks, but not other SAS devices.
> 
> This sounds like what we are seeing, but we're not mixing SAS and SATA.

I forgot to add:  Why are the log devices showing problems and not the
cache devices?  Same drives, same bus.  Different access pattern, sure.

-- 
M. Casper Lewis                     |   mclewis@ucdavis.edu
Systems Administrator               |   Voice: (530) 754-7978
Genome Center                       |
University of California, Davis     |