xfs/111: make it work better

xfs/111: make it work better

xfs/111 is failing today, primarily because it obliterates the
root inode chunk and the verifiers fail the mount - i.e. the test
fails to properly test the thing it's meant to test.

Change the test so that the induced corruption is further into the
filesystem, but still hitting the inodes which have been created
for the test, so that the fs can mount and continue.

This requires that the helper binary (itrash) take an offset, which
we will figure out by using xfs_db.

This changes the locations of the inodes we hit; we're not really
going to be able to predict that terribly well, so remove the
output which shows inode offsets, and just keep track of whether
we managed to obliterate any at all.

The test still fails, because the fs is corrupted; this was done
intentionally, so run xfs_repair before the test exits to fix
things up.

(This test doesn't run often; it's not in the auto group, and
all the failures are extremely noisy and time consuming...)

Signed-off-by: Eric Sandeen <sandeen@redhat.com>
Reviewed-by: Brian Foster <bfoster@redhat.com>
Signed-off-by: Dave Chinner <david@fromorbit.com>