> In Solaris 8 the mnttab is no longer writeable like in 7 and below. NBU
> wants to change the access time for purposes of incremental backups, but
> can't. And you can't make mnttab writeable even if you wanted to, it's
> not a real file anymore.
There is a special filsystem type `mntfs'. What is happening is that a
kernel data structure is being mounted as a filesystem/file. This idea
of mounting kernel data structures as file systems, was first done, to
my knowledge, in Ninth Edition Unix, ~1988.
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