On Wed, May 16, 2012 at 12:55:13AM +0200, Marc-André Lureau wrote:
> Use preallocation mode specified in volume XML format when running
> qemu-img.
> ---
> src/storage/storage_backend.c | 70 +++++++++++++++++++++++++++++++++++------
> 1 file changed, 60 insertions(+), 10 deletions(-)
>
> diff --git a/src/storage/storage_backend.c b/src/storage/storage_backend.c
> index caac2f8..8b31823 100644
> --- a/src/storage/storage_backend.c
> +++ b/src/storage/storage_backend.c
> @@ -645,6 +645,38 @@ cleanup:
> return ret;
> }
>
> +static char *
> +virStorageQemuImgOptionsStr(virStorageVolDefPtr vol)
> +{
> + virBuffer buf = VIR_BUFFER_INITIALIZER;
> + bool do_encryption = (vol->target.encryption != NULL);
> + const char *backingType = vol->backingStore.path ?
> + virStorageFileFormatTypeToString(vol->backingStore.format) : NULL;
> + bool comma = false;
> + const char *preallocation = vol->preallocation != VIR_STORAGE_PREALLOCATION_NONE ?
> + virStoragePreallocationModeTypeToString(vol->preallocation) : NULL;
> +
> + if (backingType) {
> + virBufferAddLit(&buf, "backing_fmt=");
> + virBufferAdd(&buf, backingType, -1);
> + comma = true;
> + }
> +
> + if (do_encryption) {
> + virBufferAdd(&buf, comma ? "," : "", -1);
> + virBufferAddLit(&buf, "encryption=on");
> + comma = true;
> + }
> +
> + if (preallocation) {
> + virBufferAdd(&buf, comma ? "," : "", -1);
> + virBufferAddLit(&buf, "preallocation=");
> + virBufferAdd(&buf, preallocation, -1);
> + comma = true;
> + }
> +
> + return virBufferContentAndReset(&buf);
> +}
>
> static int
> virStorageBackendCreateQemuImg(virConnectPtr conn,
> @@ -658,7 +690,9 @@ virStorageBackendCreateQemuImg(virConnectPtr conn,
> int imgformat = -1;
> virCommandPtr cmd = NULL;
> bool do_encryption = (vol->target.encryption != NULL);
> + bool with_preallocation = (vol->preallocation != VIR_STORAGE_PREALLOCATION_NONE);
> unsigned long long int size_arg;
> + char *options;
>
> virCheckFlags(0, -1);
>
> @@ -689,6 +723,12 @@ virStorageBackendCreateQemuImg(virConnectPtr conn,
> return -1;
> }
>
> + if (vol->target.format != VIR_STORAGE_FILE_QCOW2 && with_preallocation) {
> + virStorageReportError(VIR_ERR_INTERNAL_ERROR,
> + _("Preallocation is only available with qcow2"));
This is not an internal error since it's caused by user xml input. The rest
of the code seems to be using VIR_ERR_CONFIG_UNSUPPORTED in similar cases.
ACK with that fixed.
Christophe
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