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Re: [PATCH v2 4/7] qemu: Transient option gets avaiable for qcow2 and raw format disk



On Fri, Aug 28, 2020 at 10:08:33 -0400, Masayoshi Mizuma wrote:
> From: Masayoshi Mizuma <m mizuma jp fujitsu com>
> 
> Signed-off-by: Masayoshi Mizuma <m mizuma jp fujitsu com>
> ---
>  src/qemu/qemu_validate.c | 9 ++++++---
>  1 file changed, 6 insertions(+), 3 deletions(-)
> 
> diff --git a/src/qemu/qemu_validate.c b/src/qemu/qemu_validate.c
> index 488f258d00..82818a4fdc 100644
> --- a/src/qemu/qemu_validate.c
> +++ b/src/qemu/qemu_validate.c
> @@ -2166,9 +2166,12 @@ qemuValidateDomainDeviceDefDiskFrontend(const virDomainDiskDef *disk,
>      }
>  
>      if (disk->transient) {
> -        virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
> -                       _("transient disks not supported yet"));
> -        return -1;
> +        if ((disk->src->format != VIR_STORAGE_FILE_QCOW2) &&
> +            (disk->src->format != VIR_STORAGE_FILE_RAW)) {

This needs a check that QEMU_CAPS_BLOCKDEV is available as it won't
really work properly in pre-blockdev config. Also here you
should reject any other unsupported configuration rather than in the
code.

> +            virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
> +                           _("transient disks not supported yet"));
> +            return -1;
> +        }
>      }
>  
>      if (disk->iomode == VIR_DOMAIN_DISK_IO_NATIVE &&
> -- 
> 2.27.0
> 


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