Re: [Qemu-devel] Boot Problems Windows XP guest

[Paolo Bonzini <pbonzini@redhat.com>]

Il 29/08/2013 16:51, Erik Rull ha scritto:
> 
> 
>> On August 29, 2013 at 11:25 AM Benoît Canet <benoit.canet@irqsave.net> wrote:
>>
>>
>>> My commandline section is (I played with bps between 0.5 and 2.0 MB/sec and
>>> iops
>>> with 1000 and 500):
>>> -drive file=/dev/sda2,cache=none,bps=548576,bps_max=1,iops_max=1000
>>> Within qemu it looks like that:
>>> QEMU 1.6.50 monitor - type 'help' for more information
>>> (qemu) info block
>>> ide0-hd0: /dev/sda2 (raw)
>>>     I/O throttling:   bps=548576 bps_rd=0 bps_wr=0 bps_max=1 bps_rd_max=0
>>> bps_wr_max=0 iops=0 iops_rd=0 iops_wr=0 iops_max=1000 iops_rd_max=0
>>> iops_wr_max=0 iops_size=0
>>> (qemu)
>>
>> Why did you set iops_max but not iops ?
>>
>> Best regards
>>
>> Benoît
>>
> 
> Good point, I added that, but it still keeps rebooting:
> (qemu) info block
> ide0-hd0: /dev/sda2 (raw)
>     I/O throttling:   bps=548576 bps_rd=0 bps_wr=0 bps_max=1 bps_rd_max=0
> bps_wr_max=0 iops=500 iops_rd=0 iops_wr=0 iops_max=500 iops_rd_max=0
> iops_wr_max=0 iops_size=0

Too bad.

But iops_max w/o iops makes sense: it means no more than 1000 iops will
be in flight at the same time.  Note that "s" is a plural in "*s_max",
not "per seconds". :)

You could try iops_max=1 and make it higher if it works.

Paolo