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[Qemu-devel] [Bug 1395217] Re: Networking in qemu 2.0.0 and beyond is no
From: |
Tim Dawson |
Subject: |
[Qemu-devel] [Bug 1395217] Re: Networking in qemu 2.0.0 and beyond is not compatible with Open Solaris (Illumos) 5.11 |
Date: |
Wed, 26 Nov 2014 19:04:21 -0000 |
Note that this Illumos image is certified/runs cleanly on Intel hardware
from the last 5 years when natively on it. I doubt that it is a kernel
problem with Illumos with regard to the actual CPU architecture. Older
releases that are OpenSolaris based also see the problem.
Generally speaking, I don't think that an issue of this nature has ever
been seen with this OS image on any Intel or AMD CPU ever tested . . .
so unless there is something in Illumos that is only triggered by qemu,
I find it hard to imagine it being an Illumos bug, but then again, it's
not like oddities like this never happen . . .
And thanks for all the quick attention! If nothing else, it got me to a
point whereby I can work around the problem, and not be stuck on older
builds that virt-manager hates . . . .
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https://bugs.launchpad.net/bugs/1395217
Title:
Networking in qemu 2.0.0 and beyond is not compatible with Open
Solaris (Illumos) 5.11
Status in QEMU:
New
Bug description:
The networking code in qemu in versions 2.0.0 and beyond is non-
functional with Solaris/Illumos 5.11 images.
Building 1.7.1, 2.0.0, 2.0.2, 2.1.2,and 2.2.0rc1with the following
standard Slackware config:
# From Slackware build tree . . .
./configure \
--prefix=/usr \
--libdir=/usr/lib64 \
--sysconfdir=/etc \
--localstatedir=/var \
--enable-gtk \
--enable-system \
--enable-kvm \
--disable-debug-info \
--enable-virtfs \
--enable-sdl \
--audio-drv-list=alsa,oss,sdl,esd \
--enable-libusb \
--disable-vnc \
--target-list=x86_64-linux-user,i386-linux-user,x86_64-softmmu,i386-softmmu
\
--enable-spice \
--enable-usb-redir
And attempting to run the same VM image with the following command (or via
virt-manager):
macaddress="DE:AD:BE:EF:3F:A4"
qemu-system-x86_64 nex4x -cdrom /dev/cdrom -name "Nex41" -cpu Westmere
-machine accel=kvm -smp 2 -m 4000 -net nic,macaddr=$macaddress -net
bridge,br=b
r0 -net dump,file=/usr1/tmp/<FILENAME> -drive file=nex4x_d1 -drive
file=nex4x_d2
-enable-kvm
Gives success on 1.7.1, and a deaf VM on all subsequent versions.
Notable in validating my config, is that a Windows 7 image runs
cleanly with networking on *all* builds, so my configuration appears
to be good - qemu just hates Solaris at this point.
Watching with wireshark (as well as pulling network traces from qemu
as noted above) it appears that the notable difference in the two
configs is that for some reason, Solaris gets stuck arping for it's
own interface on startup, and never really comes on line on the
network. If other hosts attempt to ping the Solaris instance, they
can successfully arp the bad VM, but not the other way around.
To manage notifications about this bug go to:
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- [Qemu-devel] [PATCH v8 00/10] block: Incremental backup series, John Snow, 2014/11/26
- [Qemu-devel] [PATCH v8 02/10] qmp: Add block-dirty-bitmap-add and block-dirty-bitmap-remove, John Snow, 2014/11/26
- [Qemu-devel] [PATCH v8 07/10] qmp: Add support of "dirty-bitmap" sync mode for drive-backup, John Snow, 2014/11/26
- [Qemu-devel] [PATCH v8 05/10] block: Add bdrv_copy_dirty_bitmap and bdrv_reset_dirty_bitmap, John Snow, 2014/11/26
- [Qemu-devel] [PATCH v8 04/10] hbitmap: Add hbitmap_copy, John Snow, 2014/11/26
- [Qemu-devel] [PATCH v8 06/10] qmp: Add block-dirty-bitmap-enable and block-dirty-bitmap-disable, John Snow, 2014/11/26
- [Qemu-devel] [PATCH v8 08/10] qapi: Add transaction support to block-dirty-bitmap-{add, enable, disable}, John Snow, 2014/11/26
- [Qemu-devel] [PATCH v8 09/10] qmp: Add dirty bitmap 'enabled' field in query-block, John Snow, 2014/11/26
- [Qemu-devel] [PATCH v8 10/10] qemu-iotests: Add tests for drive-backup sync=dirty-bitmap, John Snow, 2014/11/26
- [Qemu-devel] [PATCH v8 03/10] block: Introduce bdrv_dirty_bitmap_granularity(), John Snow, 2014/11/26
- [Qemu-devel] [PATCH v8 01/10] qapi: Add optional field "name" to block dirty bitmap, John Snow, 2014/11/26