f0b8f9c13b
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.