[libvirt] [PATCH 2/2] qemu: don't log error for missing optional sources on start

[John Ferlan]

$SUBJ

"storage sources"

On 11/12/18 7:58 AM, Nikolay Shirokovskiy wrote:
> Because missing optional source is not error. The patch
> address only local files. Fixing other cases is a bit ugly.
> 
> Signed-off-by: Nikolay Shirokovskiy <nshirokovskiy at virtuozzo.com>
> ---
>  src/qemu/qemu_process.c | 3 ++-
>  1 file changed, 2 insertions(+), 1 deletion(-)
> 
> diff --git a/src/qemu/qemu_process.c b/src/qemu/qemu_process.c
> index 802274e..5e04bf9 100644
> --- a/src/qemu/qemu_process.c
> +++ b/src/qemu/qemu_process.c
> @@ -6100,7 +6100,8 @@ qemuProcessPrepareHostStorage(virQEMUDriverPtr driver,
>          if (!blockdev)
>              virStorageSourceBackingStoreClear(disk->src);
>  
> -        if (qemuDomainDetermineDiskChain(driver, vm, disk, true) >= 0)
> +        if (!qemuProcessMissingLocalOptionalDisk(disk) &&
> +            qemuDomainDetermineDiskChain(driver, vm, disk, true) >= 0)

Although it makes more sense for this path to use the startupPolicy, I
will point out that the first thing qemuDomainDetermineDiskChain does is
filter on virStorageSourceIsEmpty, so regardless of whether the
startupPolicy is optional or not, not much is happening for empty
sources.  So in essence unnecessary at least from my read.

John

>              continue;
>  
>          if (qemuDomainCheckDiskStartupPolicy(driver, vm, idx, cold_boot) >= 0)
>