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Re: [Qemu-devel] [PATCH v2 3/3] raw-posix: Re-open host CD-ROM after med
From: |
Stefan Hajnoczi |
Subject: |
Re: [Qemu-devel] [PATCH v2 3/3] raw-posix: Re-open host CD-ROM after media change |
Date: |
Tue, 5 Apr 2011 06:33:36 +0100 |
On Mon, Apr 4, 2011 at 6:54 PM, David Ahern <address@hidden> wrote:
>
>
> On 04/04/11 07:38, Anthony Liguori wrote:
>> On 04/04/2011 08:22 AM, Avi Kivity wrote:
>>> On 04/03/2011 02:57 PM, Stefan Hajnoczi wrote:
>>>> In order for media change to work with Linux host CD-ROM it is
>>>> necessary to reopen the file (otherwise the inode size will not
>>>> refresh, this is an issue with existing kernels).
>>>>
>>>
>>> Maybe we should fix the bug in Linux (and backport as necessary)?
>>>
>>> I think cd-rom assignment is sufficiently obscure that we can require
>>> a fixed kernel instead of providing a workaround.
>>
>> Do reads fail after CD change? Or do they succeed and the size is just
>> reported incorrectly?
>>
>> If it's the later, I'd agree that it needs fixing in the kernel. If
>> it's the former, I'd say it's clearly a feature.
>
> In January 2010 I was seeing old data -- data from the prior CD -- in
> the guest after the media change.
Yikes. Is there a bug report for this? What are the steps to reproduce it?
Stefan
- Re: [Qemu-devel] [PATCH v2 3/3] raw-posix: Re-open host CD-ROM after media change, (continued)
- Re: [Qemu-devel] [PATCH v2 3/3] raw-posix: Re-open host CD-ROM after media change, Avi Kivity, 2011/04/05
- Re: [Qemu-devel] [PATCH v2 3/3] raw-posix: Re-open host CD-ROM after media change, Amit Shah, 2011/04/05
- Re: [Qemu-devel] [PATCH v2 3/3] raw-posix: Re-open host CD-ROM after media change, Avi Kivity, 2011/04/05
- Re: [Qemu-devel] [PATCH v2 3/3] raw-posix: Re-open host CD-ROM after media change, Amit Shah, 2011/04/05
- Re: [Qemu-devel] [PATCH v2 3/3] raw-posix: Re-open host CD-ROM after media change, Avi Kivity, 2011/04/05
- Re: [Qemu-devel] [PATCH v2 3/3] raw-posix: Re-open host CD-ROM after media change, Amit Shah, 2011/04/05
- Re: [Qemu-devel] [PATCH v2 3/3] raw-posix: Re-open host CD-ROM after media change, Amit Shah, 2011/04/06
- Re: [Qemu-devel] [PATCH v2 3/3] raw-posix: Re-open host CD-ROM after media change, Stefan Hajnoczi, 2011/04/05
- Re: [Qemu-devel] [PATCH v2 3/3] raw-posix: Re-open host CD-ROM after media change, Amit Shah, 2011/04/05
- Re: [Qemu-devel] [PATCH v2 3/3] raw-posix: Re-open host CD-ROM after media change, David Ahern, 2011/04/04
- Re: [Qemu-devel] [PATCH v2 3/3] raw-posix: Re-open host CD-ROM after media change,
Stefan Hajnoczi <=
- Re: [Qemu-devel] [PATCH v2 3/3] raw-posix: Re-open host CD-ROM after media change, David Ahern, 2011/04/05
- Re: [Qemu-devel] [PATCH v2 3/3] raw-posix: Re-open host CD-ROM after media change, Stefan Hajnoczi, 2011/04/05