On Thu, Sep 01, 2016 at 10:22:41AM +1000, Dave Chinner wrote: > On Tue, Aug 09, 2016 at 07:16:21PM +0800, Eryu Guan wrote: > > When copying up a directory with opaque xattr set, the xattr was > > copied up as well, after a remount the opaque flag is honored so the > > copied-up directory is treated as opaque, which causes files created > > in the lowerdir to be hidden when using multiple lower directories. > > > > This is fixed by "ovl: don't copy up opaqueness". > .... > > +_scratch_mkfs > > + > > +# Create multiple lowerdirs and upperdir, workdir, and testdir on lowerdir > > +lowerdir1=$SCRATCH_DEV/lower1 > > +lowerdir2=$SCRATCH_DEV/lower2 > > +upperdir=$SCRATCH_DEV/upper > > +workdir=$SCRATCH_DEV/workdir > > +mkdir -p $lowerdir1 $lowerdir2 $upperdir $workdir > > +mkdir -p $lowerdir1/testdir/d > > + > > +# mount overlay with $lowerdir2 as upperdir, and remove & recreate testdir, > > +# make testdir on $lowerdir2 opaque > > +_overlay_mount_dirs $lowerdir1 $lowerdir2 $workdir none $SCRATCH_MNT > > What is the "none" here? If _overlay_mount_dirs() doesn't require > this parameter to have a specifically valid value, then why are > we passing it in at all? It's place-holder for device to be mounted, for overlayfs this can be any string but cannot be omitted. I probably should use $SCRATCH_DEV instead, like what _scratch_mount does on overlayfs, so helpers like _fs_type and _df_device that look for mounted device could work correctly. Thanks for the review! Eryu -- To unsubscribe from this list: send the line "unsubscribe linux-unionfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
