- improved ioctl fallback

diff --git a/snapper/Filesystem.cc b/snapper/Filesystem.cc
index a7cf34fa1dfbaad9357a51fd07482550c9003fcd..526a0e70916ce6d2f0dd3d3adf607f7fad5a6910 100644 (file)
--- a/snapper/Filesystem.cc
+++ b/snapper/Filesystem.cc
@@ -376,7 +376,7 @@ namespace snapper
 
        if (ioctl(fddst, BTRFS_IOC_SNAP_CREATE_V2, &args_v2) == 0)
            return true;
-       else if (errno != EINVAL)
+       else if (errno != ENOTTY && errno != EINVAL)
            return false;
 
        struct btrfs_ioctl_vol_args args;