On Fri, Dec 06, 2024 at 03:30:16PM -0800, Darrick J. Wong wrote: > From: Darrick J. Wong <djwong@xxxxxxxxxx> > > Document the -n parent option to mkfs.xfs so that users will actually > know how to turn on directory parent pointers. > > Signed-off-by: "Darrick J. Wong" <djwong@xxxxxxxxxx> Ooooops. I forgot that hch already RVB'd this: https://lore.kernel.org/linux-xfs/Z0fkd5si2ibRhehu@xxxxxxxxxxxxx/ --D > --- > man/man8/mkfs.xfs.8.in | 12 ++++++++++++ > 1 file changed, 12 insertions(+) > > > diff --git a/man/man8/mkfs.xfs.8.in b/man/man8/mkfs.xfs.8.in > index a854b0e87cb1a2..e56c8f31a52c78 100644 > --- a/man/man8/mkfs.xfs.8.in > +++ b/man/man8/mkfs.xfs.8.in > @@ -902,6 +902,18 @@ .SH OPTIONS > enabled, and cannot be turned off. > .IP > In other words, this option is only tunable on the deprecated V4 format. > +.TP > +.BI parent= value > +This feature creates back references from child files to parent directories > +so that online repair can reconstruct broken directory files. > +The value is either 0 to disable the feature, or 1 to create parent pointers. > + > +By default, > +.B mkfs.xfs > +will not create parent pointers. > +This feature is only available for filesystems created with the (default) > +.B \-m crc=1 > +option set. > .RE > .PP > .PD 0 > >
