Re: [libvirt PATCH 1/2] qemu_snapshot: create: refactor external snapshot detection

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On Tue, Jan 30, 2024 at 12:33:50 +0100, Pavel Hrdina wrote:
> Introduce new function qemuSnapshotCreateUseExternal() that will return
> true if we will use external snapshots as default location.
> 
> Signed-off-by: Pavel Hrdina <phrdina@xxxxxxxxxx>
> ---
>  src/qemu/qemu_snapshot.c | 34 +++++++++++++++++++++++++---------
>  1 file changed, 25 insertions(+), 9 deletions(-)
> 
> diff --git a/src/qemu/qemu_snapshot.c b/src/qemu/qemu_snapshot.c
> index 73ff533827..ab7b47319b 100644
> --- a/src/qemu/qemu_snapshot.c
> +++ b/src/qemu/qemu_snapshot.c
> @@ -1576,6 +1576,20 @@ qemuSnapshotCreateXMLValidateDef(virDomainObj *vm,
>  }
>  
>  

Please document the desired logic behind the return value.

> +static bool
> +qemuSnapshotCreateUseExternal(virDomainSnapshotDef *def,
> +                              unsigned int flags)
> +{
> +    if (flags & VIR_DOMAIN_SNAPSHOT_CREATE_DISK_ONLY)
> +        return true;
> +
> +    if (def->memory == VIR_DOMAIN_SNAPSHOT_LOCATION_EXTERNAL)
> +        return true;
> +
> +    return false;
> +}
> +
> +
>  static int
>  qemuSnapshotCreateAlignDisks(virDomainObj *vm,
>                               virDomainSnapshotDef *def,

Reviewed-by: Peter Krempa <pkrempa@xxxxxxxxxx>
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