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Re: [libvirt PATCH] util: Fix logic in virFileSetCOW



On Wed, Aug 05, 2020 at 10:33:21AM +0200, Jiri Denemark wrote:
> When COW is not explicitly requested to be disabled or enabled, the
> function is supposed to do nothing on non-BTRFS file systems.
> 
> Fixes commit 7230bc95aa78379c9ee20cf59394c5fc4305b75b.
> 
> https://bugzilla.redhat.com/show_bug.cgi?id=1866157
> 
> Signed-off-by: Jiri Denemark <jdenemar redhat com>
> ---
>  src/util/virfile.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/src/util/virfile.c b/src/util/virfile.c
> index 6ada3a708c..7f22884b07 100644
> --- a/src/util/virfile.c
> +++ b/src/util/virfile.c
> @@ -4522,7 +4522,7 @@ virFileSetCOW(const char *path,
>      }
>  
>      if (buf.f_type != BTRFS_SUPER_MAGIC) {
> -        if (state == VIR_TRISTATE_BOOL_ABSENT) {
> +        if (state != VIR_TRISTATE_BOOL_ABSENT) {
>              virReportSystemError(ENOSYS,
>                                   _("unable to control COW flag on '%s', not btrfs"),
>                                   path);

/facepalm

Reviewed-by: Daniel P. Berrangé <berrange redhat com>



Regards,
Daniel
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