Daniel P. Berrange wrote:
> On Tue, Feb 17, 2009 at 09:44:24AM -0500, Cole Robinson wrote:
>> Jim Meyering wrote:
>>> Russell <russellhaering@xxxxxxxxx> wrote:
>>>> Line 1133 of storage_backend_fs.c in 0.6.0:
>>>>
>>>> if (vol->target.backingStore != NULL) {
>>>> virStorageReportError(conn, VIR_ERR_NO_SUPPORT,
>>>> _("copy-on-write image not supported with "
>>>> "qcow-create"));
>>>> return -1;
>>>> }
>>>>
>>>> virStorageVolTarget has no member called backingStore, resulting in
>>>> compile errors.
>>> Thanks for the report.
>>> Here's a patch:
>>>
>>> >From 5ba834b615a90df49da46d3f3c74cee1f9a5adec Mon Sep 17 00:00:00 2001
>>> From: Jim Meyering <meyering@xxxxxxxxxx>
>>> Date: Tue, 17 Feb 2009 11:05:41 +0100
>>> Subject: [PATCH] fix compile-error when configured without qemu-img
>>>
>>> * src/storage_backend_fs.c (virStorageBackendFileSystemVolCreate):
>>> Test vol->target.path, not vol->target.backingStore.
>>> Reported by Russell Haering.
>>> ---
>>> src/storage_backend_fs.c | 2 +-
>>> 1 files changed, 1 insertions(+), 1 deletions(-)
>>>
>>> diff --git a/src/storage_backend_fs.c b/src/storage_backend_fs.c
>>> index 240de96..488f578 100644
>>> --- a/src/storage_backend_fs.c
>>> +++ b/src/storage_backend_fs.c
>>> @@ -1130,7 +1130,7 @@ virStorageBackendFileSystemVolCreate(virConnectPtr conn,
>>> vol->target.format);
>>> return -1;
>>> }
>>> - if (vol->target.backingStore != NULL) {
>>> + if (vol->target.path != NULL) {
>>> virStorageReportError(conn, VIR_ERR_NO_SUPPORT,
>>> _("copy-on-write image not supported with "
>>> "qcow-create"));
>> That will fix the compilation failure, but doesn't match the error
>> message. I think the correct fix is:
>>
>> - if (vol->target.backingStore != NULL) {
>> + if (vol->backingStore != NULL) {
>
> No, it should be
>
> if (vol->backingStore.path != NULL) {
>
>
> Both 'backingStore' and 'target are embedded instances of virStorageVolTarget
> struct, so you have to check the 'path' field of that struct for NULL
>
Ahh, yes that's right. I wasn't thinking clearly. ACK to the above.
- Cole
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