Il 13/09/2013 21:48, Peter Lieven ha scritto:
> Am 13.09.2013 20:25, schrieb Eric Blake:
>> On 09/13/2013 04:36 AM, Paolo Bonzini wrote:
>>> Il 13/09/2013 12:25, Peter Lieven ha scritto:
if the target has_zero_init = 0, but supports efficiently
writing zeroes by unmapping we call bdrv_zer
On 09/13/2013 01:48 PM, Peter Lieven wrote:
+flags = BDRV_O_RDWR | BDRV_O_UNMAP;
>>> I think this should be a new command-line flag.
>> I agree - while 'sparse by default' may be reasonable, it is also
>> feasible to want a mode that guarantees expansion rather than unmapped
>> or sparse.
Am 13.09.2013 20:25, schrieb Eric Blake:
> On 09/13/2013 04:36 AM, Paolo Bonzini wrote:
>> Il 13/09/2013 12:25, Peter Lieven ha scritto:
>>> if the target has_zero_init = 0, but supports efficiently
>>> writing zeroes by unmapping we call bdrv_zeroize to
>>> avoid fully allocating the target. this
On 09/13/2013 04:36 AM, Paolo Bonzini wrote:
> Il 13/09/2013 12:25, Peter Lieven ha scritto:
>> if the target has_zero_init = 0, but supports efficiently
>> writing zeroes by unmapping we call bdrv_zeroize to
>> avoid fully allocating the target. this currently
>> is designed especially for iscsi.
Il 13/09/2013 12:46, Peter Lieven ha scritto:
>>>
>>> -flags = BDRV_O_RDWR;
>>> +flags = BDRV_O_RDWR | BDRV_O_UNMAP;
>> I think this should be a new command-line flag.
> In an earlier version there where no objections. I think it would
> make the usage of qemu-img convert more complicated
On 13.09.2013 12:36, Paolo Bonzini wrote:
Il 13/09/2013 12:25, Peter Lieven ha scritto:
if the target has_zero_init = 0, but supports efficiently
writing zeroes by unmapping we call bdrv_zeroize to
avoid fully allocating the target. this currently
is designed especially for iscsi.
Signed-off-by
Il 13/09/2013 12:25, Peter Lieven ha scritto:
> if the target has_zero_init = 0, but supports efficiently
> writing zeroes by unmapping we call bdrv_zeroize to
> avoid fully allocating the target. this currently
> is designed especially for iscsi.
>
> Signed-off-by: Peter Lieven
> ---
> qemu-img
if the target has_zero_init = 0, but supports efficiently
writing zeroes by unmapping we call bdrv_zeroize to
avoid fully allocating the target. this currently
is designed especially for iscsi.
Signed-off-by: Peter Lieven
---
qemu-img.c | 22 --
1 file changed, 16 insertion
