The chattr(1) manpage suffers from the same problems mount(1)
had: many options listed, not kept up to date for various
filesystems.
I've submitted a manpage update for chattr(1) which says to
refer to filesystem-specific manpages for supported attributes;
this patch updates btrfs(5) to list the attributes supported
by btrfs.
Signed-off-by: Eric Sandeen <sand...@redhat.com>
---
diff --git a/Documentation/btrfs-mount.txt b/Documentation/btrfs-mount.txt
index 4433a78..c38e80a 100644
--- a/Documentation/btrfs-mount.txt
+++ b/Documentation/btrfs-mount.txt
@@ -3,7 +3,7 @@ btrfs-mount(5)
NAME
----
-btrfs-mount - mount options for the btrfs filesystem
+btrfs-mount - mount options and supported file attributes for the btrfs
filesystem
DESCRIPTION
-----------
@@ -179,8 +179,20 @@ MOUNT OPTIONS
*user_subvol_rm_allowed*::
Allow subvolumes to be deleted by a non-root user. Use with caution.
+FILE ATTRIBUTES
+---------------
+The btrfs filesystem supports setting the following file
+attributes the `chattr`(1) utility
+append only (a), no atime updates (A), compressed (c), no copy on write (C),
+no dump (d), synchronous directory updates (d), immutable (i),
+synchronous updates (S), and no compression (X).
+
+For descriptions of these attribute flags, please refer to the
+`chattr`(1) man page.
+
SEE ALSO
--------
+`chattr`(1),
`mkfs.btrfs`(8),
`mount`(8),
`btrfs`(8)
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