Am 01.09.2011 17:56, schrieb Christoph Hellwig:
> On Thu, Sep 01, 2011 at 03:27:35PM +0100, Daniel P. Berrange wrote:
>> One other question too, when creating a qcow2 image via 'qemu-img create'
>> you can specify a 'prealloc' option to require metadata to be allocated
>> at time of creation.
>>
>>
On Thu, Sep 01, 2011 at 05:55:43PM +0200, Christoph Hellwig wrote:
> Please try the attached (untested) patch:
Yes, this patch worked succesfully with the following test case:
$ dd if=/dev/zero of=loop.img bs=1M seek=100 count=0
$ losetup -f loop.img
$ ./x86_64-softmmu/qemu-system-x86_64 -
On Thu, Sep 01, 2011 at 03:27:35PM +0100, Daniel P. Berrange wrote:
> One other question too, when creating a qcow2 image via 'qemu-img create'
> you can specify a 'prealloc' option to require metadata to be allocated
> at time of creation.
>
> Should we have the same control at time of resize too
Please try the attached (untested) patch:
Index: qemu/block/raw-posix.c
===
--- qemu.orig/block/raw-posix.c 2011-09-01 17:37:42.579651525 +0200
+++ qemu/block/raw-posix.c 2011-09-01 17:43:28.882967337 +0200
@@ -645,10 +645,23 @@
On Thu, Sep 01, 2011 at 04:05:26PM +0200, Christoph Hellwig wrote:
> On Thu, Sep 01, 2011 at 02:27:55PM +0100, Daniel P. Berrange wrote:
> > I see two likely approaches:
> >
> > 1. Add a parameter to the existing 'block_resize' command
> > 'refreshonly=true|false'
> >
> > 2. Add a separate
On Thu, Sep 01, 2011 at 02:27:55PM +0100, Daniel P. Berrange wrote:
> We want to support online resize of guest disks in the libvirt API for
> QEMU, and had intended to use the fairly recently added 'block_resize'
> command:
>
> commit db97ee6a976bacbb0d18818e951cfc41b39269a7
> Author: Christo
On Thu, Sep 01, 2011 at 02:27:55PM +0100, Daniel P. Berrange wrote:
> I see two likely approaches:
>
> 1. Add a parameter to the existing 'block_resize' command
> 'refreshonly=true|false'
>
> 2. Add a separate command 'block_refresh'
I think all that you need is a to implement a bdrv_trun
We want to support online resize of guest disks in the libvirt API for
QEMU, and had intended to use the fairly recently added 'block_resize'
command:
commit db97ee6a976bacbb0d18818e951cfc41b39269a7
Author: Christoph Hellwig
Date: Mon Jan 24 13:32:41 2011 +0100
block: tell drivers a
