Description of problem:

xfsdump/xfsrestore: suggest recovery for false roots may be possible using -x

Description of problem:

Some versions of xfsdump may produce archives that cannot be restored correctly
problems with bind mounts identified in Bug 1698057, a fix to restore these
archives was made in Bug 2034327.

This fix uses a new option `-x` to allow archives to be restored, unfortunately
for the case where an archive causes xfsrestore to fail with an assert there's
no direction given to the user that recovery may be possible.

Version-Release number of selected component (if applicable):

xfsdump-3.1.10-1.el9.x86_64

Steps to Reproduce:
Using the xfsdump attached to the bz

mkdir /tmp/test
xfsrestore -f bind_mount-xfsdump-3.1.4-1.el7.x86_64.dump /tmp/test

Actual results:
xfsrestore: using file dump (drive_simple) strategy
xfsrestore: version 3.1.10 (dump format 3.0) - type ^C for status and control
xfsrestore: searching media for dump
xfsrestore: examining media file 0
xfsrestore: dump description:
xfsrestore: hostname: rhel-7_2
xfsrestore: mount point: /mnt2
xfsrestore: volume: /dev/loop0
xfsrestore: session time: Sat Mar 12 11:36:41 2022
xfsrestore: level: 0
xfsrestore: session label: "bind mount"
xfsrestore: media label: "test"
xfsrestore: file system id: 9327a140-79c1-4c02-9478-7f699c562409
xfsrestore: session id: 7e3f9f99-928c-40fe-ae65-93ba72387b1e
xfsrestore: media id: d486cf35-b15c-480c-885d-20d7fe755a7d
xfsrestore: searching media for directory dump
xfsrestore: reading directories
xfsrestore: tree.c:757: tree_begindir: Assertion `ino != persp->p_rootino || hardh == persp->p_rooth' failed.
Aborted (core dumped)

Expected results:

xfsrestore: ERROR: tree.c:791: tree_begindir: Assertion `ino != persp->p_rootino || hardh == persp->p_rooth` failed.
xfsrestore: ERROR: False root detected. Recovery may be possible using the `-x` option
Aborted

Additional info:

Upstream: https://lore.kernel.org/linux-xfs/20230824020704.1893521-1-ddouwsma@redhat.com