* [Qemu-devel] [question] block: do we have any consideration about adding retry support in error handling?
@ 2014-12-25 1:57 Bin Wu
2014-12-25 2:42 ` Fam Zheng
0 siblings, 1 reply; 5+ messages in thread
From: Bin Wu @ 2014-12-25 1:57 UTC (permalink / raw)
To: qemu-devel
Cc: Kevin Wolf, pbonzini@redhat.com >> Paolo Bonzini,
Stefan Hajnoczi
Hi,
When IO error happens in physical device, qemu block layer supports error
reporting, error ignoring and error stoping(for example, virtio-blk). Can we
have any way to resend the error IO?
thanks
--
Bin Wu
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: [Qemu-devel] [question] block: do we have any consideration about adding retry support in error handling?
2014-12-25 1:57 [Qemu-devel] [question] block: do we have any consideration about adding retry support in error handling? Bin Wu
@ 2014-12-25 2:42 ` Fam Zheng
2014-12-25 3:46 ` Bin Wu
0 siblings, 1 reply; 5+ messages in thread
From: Fam Zheng @ 2014-12-25 2:42 UTC (permalink / raw)
To: Bin Wu
Cc: Kevin Wolf, pbonzini@redhat.com >> Paolo Bonzini,
qemu-devel, Stefan Hajnoczi
On Thu, 12/25 09:57, Bin Wu wrote:
> Hi,
>
> When IO error happens in physical device, qemu block layer supports error
> reporting, error ignoring and error stoping(for example, virtio-blk). Can we
> have any way to resend the error IO?
With error stop, the request is retried after resume.
Fam
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: [Qemu-devel] [question] block: do we have any consideration about adding retry support in error handling?
2014-12-25 2:42 ` Fam Zheng
@ 2014-12-25 3:46 ` Bin Wu
2014-12-25 7:19 ` Fam Zheng
0 siblings, 1 reply; 5+ messages in thread
From: Bin Wu @ 2014-12-25 3:46 UTC (permalink / raw)
To: Fam Zheng
Cc: Kevin Wolf, pbonzini@redhat.com >> Paolo Bonzini,
qemu-devel, Stefan Hajnoczi
On 2014/12/25 10:42, Fam Zheng wrote:
> On Thu, 12/25 09:57, Bin Wu wrote:
>> Hi,
>>
>> When IO error happens in physical device, qemu block layer supports error
>> reporting, error ignoring and error stoping(for example, virtio-blk). Can we
>> have any way to resend the error IO?
>
> With error stop, the request is retried after resume.
>
> Fam
>
>
Thank you very much, Fam, I see. Another question: I think error stop is not the
default error handling strategy, how can we configure error stop in the VM XML
file? Can you just show me some example? Thanks again:>
--
Bin Wu
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: [Qemu-devel] [question] block: do we have any consideration about adding retry support in error handling?
2014-12-25 3:46 ` Bin Wu
@ 2014-12-25 7:19 ` Fam Zheng
2014-12-25 9:19 ` Bin Wu
0 siblings, 1 reply; 5+ messages in thread
From: Fam Zheng @ 2014-12-25 7:19 UTC (permalink / raw)
To: Bin Wu
Cc: Kevin Wolf, pbonzini@redhat.com >> Paolo Bonzini,
qemu-devel, Stefan Hajnoczi
On Thu, 12/25 11:46, Bin Wu wrote:
> On 2014/12/25 10:42, Fam Zheng wrote:
> > On Thu, 12/25 09:57, Bin Wu wrote:
> >> Hi,
> >>
> >> When IO error happens in physical device, qemu block layer supports error
> >> reporting, error ignoring and error stoping(for example, virtio-blk). Can we
> >> have any way to resend the error IO?
> >
> > With error stop, the request is retried after resume.
> >
> > Fam
> >
> >
>
> Thank you very much, Fam, I see. Another question: I think error stop is not the
> default error handling strategy, how can we configure error stop in the VM XML
> file? Can you just show me some example? Thanks again:>
This is a question for libvirt, look for "error_policy":
https://libvirt.org/formatdomain.html
Fam
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: [Qemu-devel] [question] block: do we have any consideration about adding retry support in error handling?
2014-12-25 7:19 ` Fam Zheng
@ 2014-12-25 9:19 ` Bin Wu
0 siblings, 0 replies; 5+ messages in thread
From: Bin Wu @ 2014-12-25 9:19 UTC (permalink / raw)
To: Fam Zheng
Cc: Kevin Wolf, pbonzini@redhat.com >> Paolo Bonzini,
qemu-devel, Stefan Hajnoczi
On 2014/12/25 15:19, Fam Zheng wrote:
> On Thu, 12/25 11:46, Bin Wu wrote:
>> On 2014/12/25 10:42, Fam Zheng wrote:
>>> On Thu, 12/25 09:57, Bin Wu wrote:
>>>> Hi,
>>>>
>>>> When IO error happens in physical device, qemu block layer supports error
>>>> reporting, error ignoring and error stoping(for example, virtio-blk). Can we
>>>> have any way to resend the error IO?
>>>
>>> With error stop, the request is retried after resume.
>>>
>>> Fam
>>>
>>>
>>
>> Thank you very much, Fam, I see. Another question: I think error stop is not the
>> default error handling strategy, how can we configure error stop in the VM XML
>> file? Can you just show me some example? Thanks again:>
>
> This is a question for libvirt, look for "error_policy":
>
> https://libvirt.org/formatdomain.html
>
> Fam
>
>
yes,
...
<driver name='qemu' type='qcow2' cache='none' error_policy='stop' io='native'/>
...
--
Bin Wu
^ permalink raw reply [flat|nested] 5+ messages in thread
end of thread, other threads:[~2014-12-25 9:20 UTC | newest]
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2014-12-25 1:57 [Qemu-devel] [question] block: do we have any consideration about adding retry support in error handling? Bin Wu
2014-12-25 2:42 ` Fam Zheng
2014-12-25 3:46 ` Bin Wu
2014-12-25 7:19 ` Fam Zheng
2014-12-25 9:19 ` Bin Wu
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