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(a)redhat.com&gt; --- 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);