On Fri, May 25, 2012 at 10:20 AM, Charles.Tsai-蔡清海-研究發展部
wrote:
> Stefan,
>
>I made two test cases here.
>
>1) case one:
>A 32-bit Windows 7 VM with 8G virtual disk size.
>In this test, the virtual disk is almost full.
>Like what you
On Thu, May 24, 2012 at 11:40 AM, Charles.Tsai-蔡清海-研究發展部
wrote:
> Stefan,
>
>Can you explain why a 64KB could be allocated for each sector write?
The default cluster size in qcow2 is 64 KB. qcow2 manages space in 64
KB pieces. Therefore, when you write to a region of the image that
has
On Wed, May 23, 2012 at 2:11 PM, Michael Tokarev wrote:
> On 23.05.2012 16:57, Stefan Hajnoczi wrote:
> []
>> However, the qcow2 file should not grow much beyond its virtual disk
>> size. So if you find the qcow2 is 3G but the virtual disk size is 1G,
>> then there is a bug. But from what you've
:41 PM
To: 'Stefan Hajnoczi'
Cc: qemu-devel@nongnu.org; Jonah.Wu-吳君勉-研究發展部
Subject: RE: [Qemu-devel] The image size of instance VM keeps growing
Stefan,
Can you explain why a 64KB could be allocated for each sector write?
Right now, I am testing a VM with 8G virtual
.
-Original Message-
From: Stefan Hajnoczi [mailto:stefa...@gmail.com]
Sent: Wednesday, May 23, 2012 8:57 PM
To: Charles.Tsai-蔡清海-研究發展部
Cc: qemu-devel@nongnu.org; Jonah.Wu-吳君勉-研究發展部
Subject: Re: [Qemu-devel] The image size of instance VM keeps growing
On Wed, May 23, 2012 at 11:47 AM, Charles.Tsai-蔡清海
Thanks. Good alternative view.
-Original Message-
From: Michael Tokarev [mailto:m...@tls.msk.ru]
Sent: Wednesday, May 23, 2012 9:11 PM
To: Stefan Hajnoczi
Cc: Charles.Tsai-蔡清海-研究發展部; Jonah.Wu-吳君勉-研究發展部; qemu-devel@nongnu.org
Subject: Re: [Qemu-devel] The image size of instance VM keeps
: Wednesday, May 23, 2012 8:57 PM
To: Charles.Tsai-蔡清海-研究發展部
Cc: qemu-devel@nongnu.org; Jonah.Wu-吳君勉-研究發展部
Subject: Re: [Qemu-devel] The image size of instance VM keeps growing
On Wed, May 23, 2012 at 11:47 AM, Charles.Tsai-蔡清海-研究發展部
wrote:
>After the VM ran for overnight, the image size
greater than default system I/O.
>
>
> -Original Message-
> From: Stefan Hajnoczi [mailto:stefa...@gmail.com]
> Sent: Monday, May 21, 2012 9:24 PM
> To: Charles.Tsai-蔡清海-研究發展部
> Cc: qemu-devel@nongnu.org; Jonah.Wu-吳君勉-研究發展部
> Subject: Re: [Qemu-devel] The image size of instan
On Mon, May 21, 2012 at 07:47:49AM +, Charles.Tsai-蔡清海-研究發展部 wrote:
>
>
> We created a qcow2 based-image for a VM whose size is big when it is created.
> When a VM is launched, it is a instance VM image which refers to the
> based-image. Initially, the image size of instance VM is smaller t
On 23.05.2012 16:57, Stefan Hajnoczi wrote:
[]
> However, the qcow2 file should not grow much beyond its virtual disk
> size. So if you find the qcow2 is 3G but the virtual disk size is 1G,
> then there is a bug. But from what you've posted so far I suspect the
> guest is simply writing to the di
On Wed, May 23, 2012 at 11:47 AM, Charles.Tsai-蔡清海-研究發展部
wrote:
>After the VM ran for overnight, the image size for the running VM grew
> up to 3G bytes.
What is the size of the backing file? 3G is small for a Windows
guest. Any sector that is written to could cause 64 KB to be
allocat
-蔡清海-研究發展部
Cc: qemu-devel@nongnu.org; Jonah.Wu-吳君勉-研究發展部
Subject: Re: [Qemu-devel] The image size of instance VM keeps growing
On Mon, May 21, 2012 at 10:08 AM, Charles.Tsai-蔡清海-研究發展部
wrote:
> We can run a tool to see if there is any active I/O or not. Does the image
> size shrink back if
: [Qemu-devel] The image size of instance VM keeps growing
On Mon, May 21, 2012 at 10:08 AM, Charles.Tsai-蔡清海-研究發展部
wrote:
> We can run a tool to see if there is any active I/O or not. Does the image
> size shrink back if an I/O activity stops?
> What we found here is that the image
On Mon, May 21, 2012 at 10:08 AM, Charles.Tsai-蔡清海-研究發展部
wrote:
> We can run a tool to see if there is any active I/O or not. Does the image
> size shrink back if an I/O activity stops?
> What we found here is that the image size kept growing. If this problem
> persists, it could eat up the enti
Hajnoczi [mailto:stefa...@gmail.com]
Sent: Monday, May 21, 2012 4:44 PM
To: Charles.Tsai-蔡清海-研究發展部
Cc: qemu-devel@nongnu.org; Jonah.Wu-吳君勉-研究發展部
Subject: Re: [Qemu-devel] The image size of instance VM keeps growing
On Mon, May 21, 2012 at 8:47 AM, Charles.Tsai-蔡清海-研究發展部
wrote:
> Ideally, the image s
On Mon, May 21, 2012 at 8:47 AM, Charles.Tsai-蔡清海-研究發展部
wrote:
> Ideally, the image size of instance VM is supposed to remain in a smaller
> size than the based-image. Why does it keep growing in size which is even
> bigger than that of based-image? Our VM, in fact, did nothing during the
> idle s
We created a qcow2 based-image for a VM whose size is big when it is created.
When a VM is launched, it is a instance VM image which refers to the
based-image. Initially, the image size of instance VM is smaller than that of
the based-mage. But we found the image size of the instance VM kept g
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