[sheepdog] RFT: locking issue of qemu-img and qemu-io

[徐小龙]

oh, yeah, of course :-)

Thanks,
Xiaolong Xu

On Thu, Jan 22, 2015 at 10:52 PM, Hitoshi Mitake <mitake.hitoshi at gmail.com>
wrote:

> On Thu, Jan 22, 2015 at 11:24 PM, 徐小龙 <nxtxiaolong at gmail.com> wrote:
> > Xiaolong Xu <nxtxiaolong at gmail.com>
> >
> > Thanks,
> > xiaolong xu
>
> Thanks for your tag. From next time, could you reply to the list, too?
>
> Thanks,
> Hitoshi
>
> >
> > On Thu, Jan 22, 2015 at 10:15 PM, Hitoshi Mitake <
> mitake.hitoshi at gmail.com>
> > wrote:
> >>
> >> At Thu, 22 Jan 2015 19:43:08 +0800,
> >> 徐小龙 wrote:
> >> >
> >> > hi,hitoshi,
> >> >    I have tested this patch using branch
> >> > https://github.com/sheepdog/qemu/tree/locking
> >> > with follow methods and results:
> >> >
> >> > 1、test qemu-img
> >> > root at hty-compute1:~# ./qemu-locking/qemu-img create -f raw
> sheepdog:test
> >> > 1G
> >> > Formatting 'sheepdog:test', fmt=raw size=1073741824
> >> >
> >> > root at hty-compute1:~# ./qemu-locking/qemu-img snapshot -c test-snap
> >> > sheepdog:test
> >> > WARNING: Image format was not specified for 'sheepdog:test' and
> probing
> >> > guessed raw.
> >> >          Automatically detecting the format is dangerous for raw
> images,
> >> > write operations on block 0 will be restricted.
> >> >          Specify the 'raw' format explicitly to remove the
> restrictions.
> >> >
> >> > root at hty-compute1:~# ./qemu-locking/qemu-img create -b
> >> > sheepdog:test:test-snap sheepdog:test-c 1G
> >> > Formatting 'sheepdog:test-c', fmt=raw size=1073741824
> >> > backing_file='sheepdog:test:test-snap'
> >> >
> >> > 2、test qemu-io
> >> > root at hty-compute1:~# ./qemu-locking/qemu-io -c "write 0 4096"
> >> > sheepdog:test
> >> > wrote 4096/4096 bytes at offset 0
> >> > 4 KiB, 1 ops; 0.0334 sec (119.435 KiB/sec and 29.8588 ops/sec)
> >> >
> >> > root at hty-compute1:~# ./qemu-locking/qemu-io -c "write 0 4096"
> >> > sheepdog:test-c
> >> > wrote 4096/4096 bytes at offset 0
> >> > 4 KiB, 1 ops; 0.2805 sec (14.257 KiB/sec and 3.5641 ops/sec)
> >> >
> >> > root at hty-compute1:~# ./qemu-locking/qemu-io -c "read 0 4096"
> >> > sheepdog:test-c
> >> > read 4096/4096 bytes at offset 0
> >> > 4 KiB, 1 ops; 0.0001 sec (21.823 MiB/sec and 5586.5922 ops/sec)
> >> >
> >> > root at hty-compute1:~# ./qemu-locking/qemu-io -c "read 0 4096"
> >> > sheepdog:test
> >> > read 4096/4096 bytes at offset 0
> >> > 4 KiB, 1 ops; 0.0002 sec (17.058 MiB/sec and 4366.8122 ops/sec)
> >> >
> >> > seems work fine.
> >>
> >> Xiaolong, thanks a lot for testing. Could you give me your Tested-by
> >> tag? I want to add your tag to the patch when I post it to QEMU list.
> >>
> >> Thanks,
> >> Hitoshi
> >>
> >> >
> >> > Thanks&Best Regards,
> >> > Xiaolong Xu
> >> >
> >> > On Thu, Jan 22, 2015 at 5:26 PM, Hitoshi Mitake <
> >> > mitake.hitoshi at lab.ntt.co.jp> wrote:
> >> >
> >> > >
> >> > > Hi Jinzhi and Xiaolong,
> >> > >
> >> > > I created a patch for the locking problem of qemu-img and qemu-io.
> It
> >> > > can be found here:
> >> > > https://github.com/sheepdog/qemu/tree/locking
> >> > > # It depends on ongoing patchset, so I cannot post immediately
> >> > >
> >> > > Could you test the branch and report your result?
> >> > >
> >> > > Thanks,
> >> > > Hitoshi
> >> > >
> >
> >
>
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