Mailinglist Archive: opensuse (3318 mails)

[Bill Anderson <bill@xxxxxxxxxxxxxxxxx>]

Carlos E. R. wrote:
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> The Tuesday 2008-01-08 at 13:30 -0000, Dave Howorth wrote:
>
> > Bill Anderson wrote:
> > > Insults are much easier than courtesy.
> >
> > You've been suffering a lot from insults and disbelievers and I don't
> > understand why :(
> >
> > I didn't post before because I thought I didn't have access to a Unix
> > box. Then I remembered that there is some old iron here. FWIW, here are
> > some samples from a session I just ran:
> >
> > Compaq Tru64 UNIX V5.1B (Rev. 2650); Tue Sep  2 17:51:37 BST 2003
> >
> > % ls -ld /bin
> > lrwxr-xr-x   1 root     system         7 Aug 22  2003 /bin@ -> usr/bin/
> >
> > % ls -l /bin/sh
> > -rwxr-xr-x   2 bin      bin       149840 Apr 15  2003 /bin/sh*
> >
> > % df -h
> > Filesystem         Size        Used   Available Capacity  Mounted on
> > /dev/disk/dsk0a    240M        208M       7666K    97%    /
> > /dev/disk/dsk0g   1923M       1335M        395M    78%    /usr
>
>
> Ok, question then.
>
> What will happen during boot, if partition /usr fails the initial 
> filecheck? It can not be mounted, it has to be repaired first; but the 
> system can not drop you into a repair mode with a shell, because the 
> shell resides in /usr/bin/
Unix admins do not normally create a separate partition for /usr. In 
Unix, it is a relatively static directory. Also, you need to kick the 
partition thing, it is an x86ism. Under AIX, there is a root logical 
volume. One could create separate LVs for /tmp, /var, and /home. Under 
Solaris, it is slices, and one could create a separate slice for /usr 
and /home, under the default setup.

If you cannot mount /usr, then you get a mount failure. Depending on the 
machine, one could a console message, or one just get to read the 
numbers on an RS6000. To correct problems, I can always boot into the 
firmware.
> What does that unix do? Does it mount /usr readonly?
The boot halts.
Under ForPro (another version of Unix for those who remember Fortune 
Systems), the solution was that /usr/bin had a minimum set of utilities. 
Of course, the mount of another "partition" on /usr meant then overlaid 
those utilities.

Anyway, discussion of Unix is OT.
> - -- Cheers,
>        Carlos E. R.
>
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