Gentoo Archives: gentoo-user

From: "Canek Peláez Valdés" <caneko@×××××.com>
To: gentoo-user@l.g.o
Subject: Re: [gentoo-user] Re: LVM, /usr and really really bad thoughts.
Date: Tue, 13 Mar 2012 07:40:00
Message-Id: CADPrc81X-sXxLg=DNH6gxtqeG1Umt=Z8tJhLnVQax=8+1bTT5w@mail.gmail.com
In Reply to: Re: [gentoo-user] Re: LVM, /usr and really really bad thoughts. by Pandu Poluan
1 On Tue, Mar 13, 2012 at 1:31 AM, Pandu Poluan <pandu@××××××.info> wrote:
2 >
3 > On Mar 13, 2012 2:19 PM, "Alan McKinnon" <alan.mckinnon@×××××.com> wrote:
4 >>
5 >> On Tue, 13 Mar 2012 11:54:58 +0700
6 >> Pandu Poluan <pandu@××××××.info> wrote:
7 >>
8 >> > > The idea of trying to launch udevd and initialize devices without
9 >> > > the software, installed in /usr, which is required by those devices
10 >> > > is a configuration that causes problems in many real-world,
11 >> > > practical situations.
12 >> > >
13 >> > > The requirement of having /usr on the same partition as / is also a
14 >> > > configuration that causes problems in many real-world, practical
15 >> > > situations.
16 >> > >
17 >> >
18 >> > I quite often read about this, and after some thinking, I have to
19 >> > ask: why?
20 >> >
21 >>
22 >> I've also thought about this and I also want to ask why?
23 >>
24 >> I stopped using a separate /usr on my workstations a long time ago when
25 >> I realized it was pointless. The days of 5M hard disks when the entire
26 >> OS didn't fit on one are long gone. The days of my software going tits
27 >> up at the drop of a hat requiring a minimal repair environment to fix
28 >> it at boot are also long gone (my desk is littered with LiveCDs and
29 >> bootable flash drives).
30 >>
31 >> So I can't find a single good reason why /usr *must* be separate and my
32 >> workstations are the only machines that will ever have hotplug booting
33 >> issues.
34 >>
35 >> I'm even considering changing the install standards for the company
36 >> servers to dispense with separate /usr, as long as there are safeguards
37 >> against clowns who don't read INSTALL files and happily
38 >> accept /usr/local/<package>/var as a storage area.
39 >>
40 >
41 > I just did some more thinking, and *maybe* the reason is to prevent
42 > something under /usr (src and share comes to mind) from growing too big and
43 > messes up the root filesystem.
44 >
45 > Place the offenders on a separate partition, then mount them under /usr, and
46 > all should be well...
47
48 The always used example is to have /usr shared as a read only NFS
49 partition among several workstations. In corporate environments it is
50 certainly used this way (or at least it was when I worked, and the way
51 I used it in my office seven or eight years ago).
52
53 Of course, for a normal desktop user, a separate /usr is basically useless.
54
55 Regards.
56 --
57 Canek Peláez Valdés
58 Posgrado en Ciencia e Ingeniería de la Computación
59 Universidad Nacional Autónoma de México

Replies

Subject Author
Re: [gentoo-user] Re: LVM, /usr and really really bad thoughts. Pandu Poluan <pandu@××××××.info>
Re: [gentoo-user] Re: LVM, /usr and really really bad thoughts. Neil Bothwick <neil@××××××××××.uk>