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Re: kern/52700: Testbed VMs hang on wd1 access since recent ATA changes
The following reply was made to PR kern/52700; it has been noted by GNATS.
From: =?UTF-8?B?SmFyb23DrXIgRG9sZcSNZWs=?= <jaromir.dolecek%gmail.com@localhost>
To: gnats-bugs%netbsd.org@localhost
Cc: mlelstv%netbsd.org@localhost, gnats-admin%netbsd.org@localhost, netbsd-bugs%netbsd.org@localhost,
Andreas Gustafsson <gson%gson.org@localhost>
Subject: Re: kern/52700: Testbed VMs hang on wd1 access since recent ATA changes
Date: Sun, 5 Nov 2017 14:57:10 +0100
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There was a fix for wdbiorestart(), but that should not affect normal
operation.
I had a brief look into wd.c, seems after the dksubrification, the wddone()
no longer calls ata_channel_start(), which likely will cause I/O to stall
on machines with port multiplier. This should be fixed of course, but I
don't think it causes this issue.
Jaromir
2017-11-05 14:40 GMT+01:00 Martin Husemann <martin%duskware.de@localhost>:
> The following reply was made to PR kern/52700; it has been noted by GNATS.
>
> From: Martin Husemann <martin%duskware.de@localhost>
> To: gnats-bugs%NetBSD.org@localhost
> Cc:
> Subject: Re: kern/52700: Testbed VMs hang on wd1 access since recent ATA
> changes
> Date: Sun, 5 Nov 2017 14:36:10 +0100
>
> On Sun, Nov 05, 2017 at 01:20:01PM +0000, Andreas Gustafsson wrote:
> > >Number: 52700
> > >Category: kern
> > >Synopsis: Testbed VMs hang on wd1 access since recent ATA changes
> > >Confidential: no
> > >Severity: critical
> > >Priority: high
> > >Responsible: kern-bug-people
> > >State: open
> > >Class: sw-bug
> > >Submitter-Id: net
> > >Arrival-Date: Sun Nov 05 13:20:00 +0000 2017
> > >Originator: Andreas Gustafsson
> > >Release: NetBSD-current, source date >= 2017.11.01.19.34.46
> > >Organization:
> >
> > >Environment:
> > System: NetBSD
> > Architecture: i386
> > Machine: i386
> > >Description:
> >
> > The test results at
> >
> > http://releng.netbsd.org/b5reports/i386/commits-2017.
> 11.html#2017.11.01.19.15.31
> >
> > include "ATF output: raw, xml, html" links as expected up to
> > and including source date 2017.11.01.19.15.31:
> >
> > build: OK with 483383 lines of log, install: OK, tests: 6004 passed,
> 173 skipped, 123 expected_failure, 8 failed, ATF output: raw, xml, html
> >
> > but they are missing from the next run, of source date
> > 2017.11.01.21.13.26, and subsequent ones:
> >
> > build: OK with 484342 lines of log, install: OK, tests: 6004 passed,
> 173 skipped, 123 expected_failure, 8 failed
> >
> > Since the ATF output files are exported from the test VM using a
> > secondary virtual hard disk (wd1), it seems likely that this is
> > related to the ATA changes committed between these two dates:
> >
> > commit 2017.11.01.19.34.45 mlelstv src/sys/dev/files.dev 1.4
>
> There have been follow-up fixes on 2017.11.03, didn't those make this
> work again?
>
> Martin
>
>
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<div dir=3D"ltr">There was a fix for wdbiorestart(), but that should not af=
fect normal operation.<div><br></div><div>I had a brief look into wd.c, see=
ms after the dksubrification, the wddone() no longer calls ata_channel_star=
t(), which likely will cause I/O to stall on machines with port multiplier.=
This should be fixed of course, but I don't think it causes this issue=
.</div><div><br></div><div>Jaromir</div></div><div class=3D"gmail_extra"><b=
r><div class=3D"gmail_quote">2017-11-05 14:40 GMT+01:00 Martin Husemann <sp=
an dir=3D"ltr"><<a href=3D"mailto:martin%duskware.de@localhost"; target=3D"_blank">=
martin%duskware.de@localhost</a>></span>:<br><blockquote class=3D"gmail_quote" sty=
le=3D"margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">The fo=
llowing reply was made to PR kern/52700; it has been noted by GNATS.<br>
<br>
From: Martin Husemann <<a href=3D"mailto:martin%duskware.de@localhost";>martin@dusk=
ware.de</a>><br>
To: gnats-bugs%NetBSD.org@localhost<br>
Cc:<br>
Subject: Re: kern/52700: Testbed VMs hang on wd1 access since recent ATA<br=
>
=C2=A0changes<br>
Date: Sun, 5 Nov 2017 14:36:10 +0100<br>
<div><div class=3D"h5"><br>
=C2=A0On Sun, Nov 05, 2017 at 01:20:01PM +0000, Andreas Gustafsson wrote:<b=
r>
=C2=A0> >Number:=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A052700<br>
=C2=A0> >Category:=C2=A0 =C2=A0 =C2=A0 =C2=A0kern<br>
=C2=A0> >Synopsis:=C2=A0 =C2=A0 =C2=A0 =C2=A0Testbed VMs hang on wd1 =
access since recent ATA changes<br>
=C2=A0> >Confidential:=C2=A0 =C2=A0no<br>
=C2=A0> >Severity:=C2=A0 =C2=A0 =C2=A0 =C2=A0critical<br>
=C2=A0> >Priority:=C2=A0 =C2=A0 =C2=A0 =C2=A0high<br>
=C2=A0> >Responsible:=C2=A0 =C2=A0 kern-bug-people<br>
=C2=A0> >State:=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 open<br>
=C2=A0> >Class:=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 sw-bug<br>
=C2=A0> >Submitter-Id:=C2=A0 =C2=A0net<br>
=C2=A0> >Arrival-Date:=C2=A0 =C2=A0Sun Nov 05 13:20:00 +0000 2017<br>
=C2=A0> >Originator:=C2=A0 =C2=A0 =C2=A0Andreas Gustafsson<br>
=C2=A0> >Release:=C2=A0 =C2=A0 =C2=A0 =C2=A0 NetBSD-current, source d=
ate >=3D 2017.11.01.19.34.46<br>
=C2=A0> >Organization:<br>
=C2=A0><br>
=C2=A0> >Environment:<br>
=C2=A0> System: NetBSD<br>
=C2=A0> Architecture: i386<br>
=C2=A0> Machine: i386<br>
=C2=A0> >Description:<br>
=C2=A0><br>
=C2=A0> The test results at<br>
=C2=A0><br>
=C2=A0>=C2=A0 =C2=A0<a href=3D"http://releng.netbsd.org/b5reports/i386/c=
ommits-2017.11.html#2017.11.01.19.15.31" rel=3D"noreferrer" target=3D"_blan=
k">http://releng.netbsd.org/<wbr>b5reports/i386/commits-2017.<wbr>11.html#2=
017.11.01.19.15.31</a><br>
=C2=A0><br>
=C2=A0> include "ATF output: raw, xml, html" links as expected=
up to<br>
=C2=A0> and including source date 2017.11.01.19.15.31:<br>
=C2=A0><br>
=C2=A0>=C2=A0 =C2=A0build: OK with 483383 lines of log, install: OK, tes=
ts: 6004 passed, 173 skipped, 123 expected_failure, 8 failed, ATF output: r=
aw, xml, html<br>
=C2=A0><br>
=C2=A0> but they are missing from the next run, of source date<br>
=C2=A0> 2017.11.01.21.13.26, and subsequent ones:<br>
=C2=A0><br>
=C2=A0>=C2=A0 =C2=A0build: OK with 484342 lines of log, install: OK, tes=
ts: 6004 passed, 173 skipped, 123 expected_failure, 8 failed<br>
=C2=A0><br>
=C2=A0> Since the ATF output files are exported from the test VM using a=
<br>
=C2=A0> secondary virtual hard disk (wd1), it seems likely that this is<=
br>
=C2=A0> related to the ATA changes committed between these two dates:<br=
>
=C2=A0><br>
=C2=A0>=C2=A0 =C2=A0commit 2017.11.01.19.34.45 mlelstv src/sys/dev/files=
.dev 1.4<br>
<br>
</div></div>=C2=A0There have been follow-up fixes on 2017.11.03, didn't=
those make this<br>
=C2=A0work again?<br>
<span class=3D"HOEnZb"><font color=3D"#888888"><br>
=C2=A0Martin<br>
<br>
</font></span></blockquote></div><br></div>
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