Re: [Qemu-devel] qemu/qemu-kvm floppy regression brought by 212ec7baa28cc9d819234fed1541fc1423cfe3d8

[Zhi Yong Wu]

On Fri, Oct 28, 2011 at 6:24 PM, Zhi Yong Wu <address@hidden> wrote:
> On Fri, Oct 28, 2011 at 10:20 AM, Lucas Meneghel Rodrigues
> <address@hidden> wrote:
>> On Thu 27 Oct 2011 11:17:48 PM BRST, Zhi Yong Wu wrote:
>>>
>>> On Fri, Oct 28, 2011 at 2:57 AM, Lucas Meneghel Rodrigues
>>> <address@hidden>  wrote:
>>>>
>>>> On 10/27/2011 05:17 AM, Stefan Hajnoczi wrote:
>>>>>
>>>>> On Wed, Oct 26, 2011 at 03:19:17PM -0200, Lucas Meneghel Rodrigues
>>>>> wrote:
>>>>>>
>>>>>> On 10/26/2011 01:47 PM, Kevin Wolf wrote:
>>>>>>>
>>>>>>> Am 26.10.2011 16:41, schrieb Lucas Meneghel Rodrigues:
>>>>>>>>
>>>>>>>> Hi folks:
>>>>>>>>
>>>>>>>> We've captured a regression with floppy disk on recent qemu (and
>>>>>>>> qemu-kvm, after a code merge). We bisected it to be caused by:
>>>>>>>>
>>>>>>>> commit 212ec7baa28cc9d819234fed1541fc1423cfe3d8
>>>>>>>> Author: Richard Henderson<address@hidden>
>>>>>>>> Date:   Mon Aug 15 15:08:45 2011 -0700
>>>>>>>>
>>>>>>>>      fdc: Convert to isa_register_portio_list
>>>>>>>>
>>>>>>>>      Signed-off-by: Richard Henderson<address@hidden>
>>>>>>>>      Signed-off-by: Avi Kivity<address@hidden>
>>>>>>>>
>>>>>>>> Since this commit, the guest doesn't see a floppy disk attached to it
>>>>>>>> anymore, blocking kvm autotest ability to install windows guests
>>>>>>>> automatically. This is a big deal for kvm autotest (ruins our
>>>>>>>> automated
>>>>>>>> regression jobs), so please take a look at it.
>>>>>>>
>>>>>>> Can you please try again with the latest block branch? I think there
>>>>>>> is
>>>>>>> a patch queued that will fix it.
>>>>>>
>>>>>> Kevin, I did try with HEAD of your repo:
>>>>>>
>>>>>> git://repo.or.cz/qemu/kevin.git
>>>>>>
>>>>>> address@hidden qemu-kwolf]$ git branch -r
>>>>>>   origin/HEAD ->    origin/master
>>>>>>   origin/blkqueue
>>>>>>   origin/blkqueue-v1
>>>>>>   origin/block
>>>>>>   origin/coroutine
>>>>>>   origin/coroutine-block
>>>>>>   origin/coroutine-devel
>>>>>>   origin/devel
>>>>>>   origin/ehci
>>>>>>   origin/for-anthony
>>>>>>   origin/for-stable-0.14
>>>>>>   origin/inplace-conversion
>>>>>>   origin/master
>>>>>>
>>>>>> With this repo, master branch, the problem persists. With the block
>>>>>> branch, the problem persists.
>>>>>>
>>>>>> Now, with the blkqueue branch the problem is resolved. Cleber had
>>>>>> the same results booting a FreeDOS floppy. So the fix is indeed in
>>>>>> blkqueue.
>>>>>>
>>>>>> Oh, you might want to check the blkqueue branch, it does have quite
>>>>>> a bunch of set but unused variables, which will cause compilation
>>>>>> errors unless --disable-werror is passed to the configure script.
>>>>>
>>>>> I think blkqueue is an older development branch of the "block queue"
>>>>> feature that Kevin was working on.  It is not Kevin's block tree (see
>>>>> his "block" branch).
>>>>
>>>> So no, the block branch does not resolve the floppy access problem.
>>>>
>>>> Well, considering the tests of the stable set I'm running against qemu
>>>> right
>>>> now, this is not the biggest of our problems... I'm verifying qemu is
>>>> segfaulting on nearly every prolonged attempt of doing migration... I'm
>>>> about to write an email about it.
>>>
>>> What is the OS of your guest? fedora16 or RHEL6? I would like recently
>>> to use floppy device in guest.
>>
>> Fedora 15.
And on one host with OS Fedora 15, after floppy.ko is loaded, i have
not seen its device file /dev/fd0.

On one guest with RH6 or Fedora 14, it fails to load floppy.ko.


> Just i tried to use Fedora-15-x86_64-DVD.iso to install one guest, but  hang 
> up.
>
> My qemu.git/HEAD is 9f60639b848944200c3d33a89233d808de0b5a43.
>
> While it can work when using ./Fedora-14-x86_64-DVD.iso.
>
>>Regards,
>>
>
>
>
> --
> Regards,
>
> Zhi Yong Wu
>



-- 
Regards,

Zhi Yong Wu