Re: [Qemu-devel] [PATCH v3] qemu-img: Implement 'diff' operation.

2012-05-21 Thread Kevin Wolf
Am 21.05.2012 17:30, schrieb Eric Blake: > On 05/21/2012 07:59 AM, Richard W.M. Jones wrote: > >>> >>> Hm, I'm wondering... If I have a command line like this: >>> >>> qemu-img diff -b base.img modified.img diff.qcow2 >>> >>> Would this be equivalent to this sequence? >>> >>> qemu-img create -

Re: [Qemu-devel] [PATCH v3] qemu-img: Implement 'diff' operation.

2012-05-21 Thread Eric Blake
On 05/21/2012 07:59 AM, Richard W.M. Jones wrote: >> >> Hm, I'm wondering... If I have a command line like this: >> >> qemu-img diff -b base.img modified.img diff.qcow2 >> >> Would this be equivalent to this sequence? >> >> qemu-img create -f qcow2 -b modified.img diff.qcow2 >> qemu-img reba

Re: [Qemu-devel] [PATCH v3] qemu-img: Implement 'diff' operation.

2012-05-21 Thread Kevin Wolf
Am 21.05.2012 15:59, schrieb Richard W.M. Jones: > On Mon, May 21, 2012 at 03:29:22PM +0200, Kevin Wolf wrote: >> Am 17.05.2012 17:34, schrieb Richard W.M. Jones: >>> From: "Richard W.M. Jones" >>> >>> This produces a qcow2 file which is the difference between >>> two disk images. ie, if: >>> >>>

Re: [Qemu-devel] [PATCH v3] qemu-img: Implement 'diff' operation.

2012-05-21 Thread Richard W.M. Jones
On Mon, May 21, 2012 at 03:29:22PM +0200, Kevin Wolf wrote: > Am 17.05.2012 17:34, schrieb Richard W.M. Jones: > > From: "Richard W.M. Jones" > > > > This produces a qcow2 file which is the difference between > > two disk images. ie, if: > > > > base.img - is a disk image (in any format)

Re: [Qemu-devel] [PATCH v3] qemu-img: Implement 'diff' operation.

2012-05-21 Thread Kevin Wolf
Am 17.05.2012 17:34, schrieb Richard W.M. Jones: > From: "Richard W.M. Jones" > > This produces a qcow2 file which is the difference between > two disk images. ie, if: > > base.img - is a disk image (in any format) > modified.img - is base.img, copied and modified > > then: > > qemu

Re: [Qemu-devel] [PATCH v3] qemu-img: Implement 'diff' operation.

2012-05-17 Thread Eric Blake
On 05/17/2012 09:34 AM, Richard W.M. Jones wrote: > From: "Richard W.M. Jones" > > This produces a qcow2 file which is the difference between > two disk images. ie, if: > > base.img - is a disk image (in any format) > modified.img - is base.img, copied and modified > > then: > > qem

[Qemu-devel] [PATCH v3] qemu-img: Implement 'diff' operation.

2012-05-17 Thread Richard W.M. Jones
From: "Richard W.M. Jones" This produces a qcow2 file which is the difference between two disk images. ie, if: base.img - is a disk image (in any format) modified.img - is base.img, copied and modified then: qemu-img diff -b base.img modified.img diff.qcow2 creates 'diff.qcow2' whi