N-way mirror read speedup in zfsonlinux

[Steven Hartland]

----- Original Message ----- 
From: "Will Andrews" <will at firepipe.net>
To: "Steven Hartland" <killing at multiplay.co.uk>
Cc: "Matthew Ahrens" <mahrens at delphix.com>; <zfs-devel at freebsd.org>; "Xin Li" <delphij at freebsd.org>
Sent: Friday, August 16, 2013 11:14 PM
Subject: Re: N-way mirror read speedup in zfsonlinux


> On Fri, Aug 16, 2013 at 11:36 AM, Steven Hartland
> <killing at multiplay.co.uk> wrote:
>>> We have a vdev_geom_attrchanged() in our tree as well, to support
>>> physical path management (an early version of which is in the zfsd
>>> project branch; commits to HEAD are still pending).  So, my request
>>> would be that you change vdev_geom_attrchanged() to execute
>>> vdev_geom_set_rotating() explicitly only if the attribute matches, to
>>> ease merging.
>>
>>
>> Sure no problem done.
>
> Thanks, I've made a similar change locally.
>
>>> Does the change pass a STF run on a DEBUG build?
>>
>>
>> I'll look at getting STF installed on this test box to confirm, do you have
>> an updated version with the various issues I raised when testing it
>> a while back?
>
> I thought most if not all the issues you raised were due to
> differences in the ZFS implementation, not test case issues.  We do
> have some updates for the test suite itself, but mostly in response to
> more fixes that have not been pushed out yet.
>
> I'm currently working to push out some of the fixes.

It looks like the version of STF no longer builds under head all I get is:-
make
MAKEOBJDIRPREFIX=
Doing nothing for objlink
echo "PWD=`pwd` STF_TOOLS="/usr/home/smh/freebsd/base/head/tools/regression/stc/src/tools"/stf/ 
CHECKENV="/usr/home/smh/freebsd/base/head/tools/regression/stc/src/tools"/checkenv/"
PWD=/usr/obj/usr/home/smh/freebsd/base/head/tools/regression/stc 
STF_TOOLS=/usr/home/smh/freebsd/base/head/tools/regression/stc/src/tools/stf/ 
CHECKENV=/usr/home/smh/freebsd/base/head/tools/regression/stc/src/tools/checkenv/
make[1]: don't know how to make sh. Stop

make[1]: stopped in /usr/home/smh/freebsd/base/head/tools/regression/stc/src/tools/stf
*** Error code 2

    Regards
    Steve

Stop.
make: stopped in /usr/home/smh/freebsd/base/head/tools/regression/stc 


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