Bill Anderson wrote:

Carlos E. R. wrote:

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The Tuesday 2008-01-08 at 13:30 -0000, Dave Howorth wrote:

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Bill Anderson wrote:

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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.

Strange...we've done that at various Fortune 50 companies that I've worked at.

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.

But AIX is full of all sorts of weirdness ported over from their mainframe systems, especially their god-forsaken "stanza" format replacements for such things as /etc/fstab (/etc/vfstab in HP-UX) for no other reason than to make AIX feel "familiar" to people used to administrating mainframes.

Under Solaris, it is slices, and one could create a separate slice for

Slices are just another name for partitions...sheesh!

/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.

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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.

That method is sane, at least.

Of course, the mount of another "partition" on /usr meant then overlaid those utilities.

Anyway, discussion of Unix is OT.

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