Re: updating direct from 5 to 9?

[Martin Husemann <martin%duskware.de@localhost>]

On Sat, Aug 20, 2022 at 07:08:07PM -0500, Christopher Pinnock wrote:
> There is a change of file system superblock format between 7 and 8
> iirc which may need some attention.

I would like to hear details of this (as we are currently struggling
with a similar issue for the NetBSD 10 branch).

The only thing I found is in CHANGES-7.1:

sbin/fsdb/fsdb.c                                1.49
sys/ufs/ffs/ffs_vfsops.c                        1.340
usr.sbin/quot/quot.c                            1.34

        The superblock field that distinguishes between 4.2BSD and
        4.4BSD inodes is really only relevant on a UFS1 file system.
        Make sure that it is a UFS1 fs before using fs_old_inodefmt.

        Note that the NetBSD newfs and mkfs utilities initialize
        fs_old_inodefmt even for UFS2, so problems were apparent only
        on file systems created by other operating systems, for example,
        FreeBSD.


Martin