kern/147086: AHCI not being enabled on PC
ryan at ryanholt.net
ryan at ryanholt.net
Thu May 27 14:00:17 UTC 2010
The following reply was made to PR kern/147086; it has been noted by GNATS.
From: "ryan at ryanholt.net" <ryan at ryanholt.net>
To: Alexander Motin <mav at FreeBSD.org>
Cc: bug-followup at freebsd.org, Garrett Cooper <yanefbsd at gmail.com>
Subject: Re: kern/147086: AHCI not being enabled on PC
Date: Thu, 27 May 2010 09:55:56 -0400 (EDT)
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OK I got mvs compiled and the drives are using it now. Tested hot swap; rem=
oved
and replaced drives while writing data to the ZFS pool sitting atop. One is=
sue I
noticed is that the glabels don't seem to be read once I insert the disk ba=
ck
into the server. Seems like I need to re-label the drive and then replace i=
t
back into the zpool using zpool replace. Would this be an issue with ZFS an=
d not
the mvs driver?
=C2=A0
Additionally, this might be a cabling issue or an issue with my drive cage,=
but
when I place a disk in slot 0 (port 0 on AOC-SAT2-MV8) I get mvsch0 timeout
errors and the whole box locks up requiring a hard reboot. Placing the driv=
e in
slot 4 and utilizing slots 2-5 instead of 1-4 allows the server to boot up =
fine
/ run fine.
=C2=A0
Also, the drive pool seems a bit slow. Using the command...
=C2=A0
dd if=3D/dev/urandom (and /dev/zero) of=3D/tank/test.file bs=3D1024 count=
=3D102400=C2=A0
=C2=A0
Seems to indicate that I get somwhere between 15MB/sec (urandom) and 30 mb/=
sec
(zero). This card is on a PCI bus and therefore will be somewhat restricted=
, but
should it be reasonable to expect better performance than this out of a 4 d=
isk
Hitachi 1TB 7200 RPM 32mb cache raidz1 pool? Are there any other recommende=
d
tests to benchmark performance?
=C2=A0
Thanks again for all your help!
Ryan
=C2=A0
On May 26, 2010 at 7:20 PM Alexander Motin <mav at FreeBSD.org> wrote:
> ryan at ryanholt.net wrote:
> > OK Great. Should I re-compile my kernel with mvs as a device option?
>
> As you wish. Module should also be fine.
>
> --
> Alexander Motin
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<p style="margin: 0px;">OK I got mvs compiled and the drives are using it now. Tested hot swap; removed and replaced drives while writing data to the ZFS pool sitting atop. One issue I noticed is that the glabels don't seem to be read once I insert the disk back into the server. Seems like I need to re-label the drive and then replace it back into the zpool using zpool replace. Would this be an issue with ZFS and not the mvs driver?<span></span></p>
<p style="margin: 0px;"> </p>
<p style="margin: 0px;">Additionally, this might be a cabling issue or an issue with my drive cage, but when I place a disk in slot 0 (port 0 on AOC-SAT2-MV8) I get mvsch0 timeout errors and the whole box locks up requiring a hard reboot. Placing the drive in slot 4 and utilizing slots 2-5 instead of 1-4 allows the server to boot up fine / run fine.</p>
<p style="margin: 0px;"> </p>
<p style="margin: 0px;">Also, the drive pool seems a bit slow. Using the command...</p>
<p style="margin: 0px;"> </p>
<p style="margin: 0px;">dd if=/dev/urandom (and /dev/zero) of=/tank/test.file bs=1024 count=102400 </p>
<p style="margin: 0px;"> </p>
<p style="margin: 0px;">Seems to indicate that I get somwhere between 15MB/sec (urandom) and 30 mb/sec (zero). This card is on a PCI bus and therefore will be somewhat restricted, but should it be reasonable to expect better performance than this out of a 4 disk Hitachi 1TB 7200 RPM 32mb cache raidz1 pool? Are there any other recommended tests to benchmark performance?</p>
<p style="margin: 0px;"> </p>
<p style="margin: 0px;">Thanks again for all your help!</p>
<p style="margin: 0px;">Ryan</p>
<p> </p>
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On May 26, 2010 at 7:20 PM Alexander Motin <mav at FreeBSD.org> wrote:<br />
<br />
> ryan at ryanholt.net wrote:<br />
> > OK Great. Should I re-compile my kernel with mvs as a device option?<br />
><br />
> As you wish. Module should also be fine.<br />
><br />
> --<br />
> Alexander Motin<br />
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