Date: Thu, 4 Dec 2014 12:26:37 -0800 From: "David P. Discher" <dpd@dpdtech.com> To: =?iso-8859-1?Q?Roger_Pau_Monn=E9?= <roger.pau@citrix.com> Cc: freebsd-xen@freebsd.org Subject: Re: Attempting to Get Xen FreeBSD Dom0 working Message-ID: <C56B19DD-B001-4AB6-A296-EC221C58297C@dpdtech.com> In-Reply-To: <54801F77.5050700@citrix.com> References: <481F7D02-BFE9-4E35-A475-5A8A05A801CE@dpdtech.com> <547DFCC0.6030003@citrix.com> <DCB954B5-0E45-4DE6-AAC4-C5ACF7FD90A7@dpdtech.com> <547F1476.8080305@citrix.com> <29437DB9-7DC8-47A8-8FC4-2BFDE736B5BC@dpdtech.com> <547F59B4.1010105@citrix.com> <2DDCAA68-3B11-4E3C-AE61-EAD8CEEF1E2D@dpdtech.com> <547F6AC1.9060709@citrix.com> <BBBFE7EC-BB42-4514-9A68-437ECAB8E640@dpdtech.com> <7C356027-01D8-4800-B211-282566BC9871@dpdtech.com> <54801F77.5050700@citrix.com>
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--Apple-Mail=_BB983AE6-9E20-42E0-80EF-26175E3A7F27 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=windows-1252 On Dec 4, 2014, at 12:46 AM, Roger Pau Monn=E9 <roger.pau@citrix.com> = wrote: > Hello, >=20 > El 04/12/14 a les 3.27, David P. Discher ha escrit: >> So, the =93working=94 part =85 the hypervisor up, and Dom0 running, = is correct. >>=20 >> However, after ~5 minutes, the AHCI buses timeout. This seems to be = constantly=20 >> reproducible via Dom0. FreeBSD on the this bare metal does=92t have = this issue. >=20 > If you boot Xen with iommu=3Ddebug, do you see any messages on the Xen > console? >=20 > My test boxes also use AHCI, but the chipset is not exactly the same > (mine is ICH8, yours is ICH10). Do you do anything specific to trigger > the timeout, or just leaving Dom0 in an idle state also triggers this? >=20 > Could you switch to the Xen console and post the output of the "i" = debug > key when this happens? >=20 > Also, you can try to play with the AHCI driver sysctls, to see if some > of them have any effect. I would recommend trying to disable MSI > interrupts (hint.ahci.X.msi=3D0) and power control = (hint.ahcich.X.pm_level=3D0). Yes, ICH10. I=92m not sure if an idle Dom0 does this, however limited = access to the disks, even just editing things like /boot/loader.conf and = /etc/rc.conf will eventually hang. But I=92m also trying to launch a = DomU, and for the convince of a documented process, I=92m following your = debian steps =85 and the debian installer is running. I=92m running a = zpool mirror across 4k aligned GPT partitions for the root drive. I=92ll = also attempt to break break the mirror, as I don=92t remember this being = a problem with a single drive.=20 As first step last night, I actually moved the msi interrupts to =3D 2, = instead of fully disabled. And this helped a little. It seemed to = allow the AHCI driver to recovered after the first several timeouts. I = will try disabling MSI as well and well as iommu debug. However, I=92m = still without a Xen console. Durning the ACPI/pci probing =85 my console = over SOL com3 cuts out. I haven=92t try to recover it yet. I will see = what I can do. However, from what it looks like, Xen kernel is latching = on the com port, and freebsd sees it as =93busy=94. I=92ll see what I = can figure out. I believe the pm_level is default to 0, but will double = check that. - David P. Discher http://davidpdischer.com/ AIM: DavidDPD | Y!M: daviddpdz=20 --Apple-Mail=_BB983AE6-9E20-42E0-80EF-26175E3A7F27 Content-Transfer-Encoding: 7bit Content-Disposition: attachment; filename=signature.asc Content-Type: application/pgp-signature; name=signature.asc Content-Description: Message signed with OpenPGP using GPGMail -----BEGIN PGP SIGNATURE----- Comment: GPGTools - https://gpgtools.org iQEcBAEBCgAGBQJUgMN+AAoJEEmwU6XuhYWO87EH/3r3tyXFiZXB7mnc3JLU1T+O UN9M0MCE91sjfJDEoTH+Phh1uY40sRFvChZ3raOl1SWRSZzKQz15pqiOIoSKgBsx kS8GP/7EERxWzYKpipKbh4f78KRvDfq07xdmKomg5gj0jS1rzn9NDhRDdIDgkxi6 NKhkR+An+OnAWM/+Fn8BjxrkP95jD5thBx2/9sCpnrfhr6u5piAgF8pIGkVeKxVb HxKEmbFazl7s2rMWnyhsT3l6NGFBjuVVcF5S6M33fMCkI1b8FSX76EJz0eFZ+muU diEB1m+BmOfrxmNJDH8hsMUBuvDkNG1qkw0obbAPJfoU4BE5h4h5FQz9Qm7lPl8= =S2pq -----END PGP SIGNATURE----- --Apple-Mail=_BB983AE6-9E20-42E0-80EF-26175E3A7F27--
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