Re: git snapshot can open readonly vm image

[John Wong <johnw@wonghome.net>]

Avi Kivity 提到:
> On 01/26/2010 10:49 AM, John Wong wrote:
>   
>> Hi, after upgrade to current qemu-kvm (download from
>> http://git.kernel.org/?p=virt/kvm/qemu-kvm.git;a=snapshot;h=34f6b13147766789fc2ef289f5b420f85e51d049;sf=tgz),
>> i can not open the readonly vm image, it can work before.
>>
>> please help, thank you.
>>   
>>     
>
> It's impossible to understand what's wrong without a lot more details.
>
>   
Sorry, i try to more details.

After upgrade to current qemu-kvm
(http://git.kernel.org/?p=virt/kvm/qemu-kvm.git;a=snapshot;h=34f6b13147766789fc2ef289f5b420f85e51d049;sf=tgz),
i can not open the vm image, which only have read only (0644) permission
for my login ID.

And i can do that with qemu-kvm ( download from git.kernel.org at
10-jan-2010 ),
both use same kernel modules (2.6.32 from debian kernel package).

my system is debian/sid/amd64.
uname -a: Linux retro 2.6.32-trunk-amd64 #1 SMP Sun Jan 10 22:40:40 UTC
2010 x86_64 GNU/Linux
ls -l image.qcow2: -rw-r--r-- 1 root root 3235643392 2010-01-11 16:24
image.qcow2
kvm-qemu error message like this: qemu: could not open disk image
/home/root/kvm/winxp-hkjc-full.qcow2: Permission denied


And i noticed, after upgrade to current qemu-kvm, i see a lot of warning
message like this:
QEMU 0.12.50 monitor - type 'help' for more information
(qemu) BUG: kvm_dirty_pages_log_enable_slot: invalid parameters
BUG: kvm_dirty_pages_log_disable_slot: invalid parameters
BUG: kvm_dirty_pages_log_enable_slot: invalid parameters
BUG: kvm_dirty_pages_log_disable_slot: invalid parameters
BUG: kvm_dirty_pages_log_enable_slot: invalid parameters

Please help, thank you.