Re: Learning about the Kernal

From	Aragorn <thorongil@telenet.be.invalid>
Newsgroups	comp.os.linux.misc
Subject	Re: Learning about the Kernal
Followup-To	comp.os.linux.misc
Date	2015-03-22 21:52 +0100
Organization	A noiseless patient Strider
Message-ID	<mena1d$thr$1@dont-email.me> (permalink)
References	(9 earlier) <mel14i$evu$14@reader1.panix.com> <mel1e8$ivr$1@dont-email.me> <melbtp$lov$1@reader1.panix.com> <melcd5$6b9$1@dont-email.me> <memfhu$f4e$1@reader1.panix.com>

Followups directed to: comp.os.linux.misc

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On Sunday 22 March 2015 14:19, ruben safir conveyed the following to 
comp.os.linux.misc...

> On Sun, 22 Mar 2015 04:20:54 +0100, Aragorn wrote:
> 
>>> The naming scheme was designed by individuals who want to drive
>>> people away from their computers.
>> 
>> That's not the point.
> 
> my dear friend - that is the only point.  All the other ones you
> mention are irrelevent.  /dev/sda1 MEANS something to the humans

No, that's the irrelevant part.  Your contention was that PARTUUIDs and 
UUIDs are not guaranteed to consistent, while in reality, it is 
/dev/sda1 (or any other such designation) which is inconsistent, and 
particularly so in machines which have more than one hard disk 
installed.

> UUID=22171af4-2b9c-4b5c-a53c-7cbb927f0a75 / reiserfs defaults 0 1
> 
> is meaningless.

Then use a LABEL.  Example follows.

   # Device         Mountpoint    FSTYPE   OPTIONS    DUMP  FSCK

   LABEL=rootfs     /             xfs      defaults   0     0

Nevertheless, the above is moot as this is a sample /etc/fstab entry.  
Telling the kernel what device to mount as the root filesystem in GRUB 
is an entirely different matter.  The kernel does not recognize UUIDs or 
LABELs, so if you want to provide for a persistent device name in GRUB ─ 
and again, /dev/sda1 is not guaranteed to be persistent ─ you'll need to 
either have an initramfs created with dracut (which will include the 
tools necessary to recognize and mount devices based upon a UUID or a 
LABEL) or if you don't want an initramfs then you need a GPT 
partitioning scheme and use the PARTUUID.

It's that simple.

-- 
= Aragorn =

         http://www.linuxcounter.net - registrant #223157

Thread

Learning about the Kernal ruben safir <ruben@mrbrklyn.com> - 2015-03-14 19:59 -0400
  Re: Learning about the Kernal Xavier Roche <xroche@free.fr.NOSPAM.invalid> - 2015-03-15 11:11 +0100
    Re: Learning about the Kernal ruben <nowhere@nowhere.nor> - 2015-03-15 21:14 +0000
      Re: Learning about the Kernal Tauno Voipio <tauno.voipio@notused.fi.invalid> - 2015-03-16 10:02 +0200
        Re: Learning about the Kernal Ruben Safir <mrbrklyn@panix.com> - 2015-03-17 00:18 +0000
          Re: Learning about the Kernal Bobbie Sellers <bliss-sf4ever@dslextreme.com> - 2015-03-16 20:53 -0700
            Re: Learning about the Kernal ruben safir <dont@email.me> - 2015-03-17 05:14 +0000
            Re: Learning about the Kernal ruben safir <dont@email.me> - 2015-03-17 05:23 +0000
      Re: Learning about the Kernal Dan Espen <despen@verizon.net> - 2015-03-16 21:58 -0400
        Re: Learning about the Kernal ruben safir <dont@email.me> - 2015-03-17 05:21 +0000
          Re: Learning about the Kernal Rich <rich@example.invalid> - 2015-03-17 10:51 +0000
          Re: Learning about the Kernal Dan Espen <despen@verizon.net> - 2015-03-17 09:10 -0400
            Re: Learning about the Kernal ruben safir <ruben@mrbrklyn.com> - 2015-03-17 14:12 -0400
              Re: Learning about the Kernal William Unruh <unruh@invalid.ca> - 2015-03-17 19:03 +0000
                Re: Learning about the Kernal ruben safir <dont@email.me> - 2015-03-17 19:08 +0000
                Re: Learning about the Kernal Dan Espen <despen@verizon.net> - 2015-03-17 15:17 -0400
                Re: Learning about the Kernal ruben safir <dont@email.me> - 2015-03-20 01:06 +0000
                Re: Learning about the Kernal Dan Espen <despen@verizon.net> - 2015-03-19 23:52 -0400
                Re: Learning about the Kernal Rich <rich@example.invalid> - 2015-03-20 10:52 +0000
                Re: Learning about the Kernal Jerry Peters <jerry@example.invalid> - 2015-03-20 20:33 +0000
                Re: Learning about the Kernal ruben safir <ruben@mrbrklyn.com> - 2015-04-20 09:48 -0400
              Re: Learning about the Kernal Dan Espen <despen@verizon.net> - 2015-03-17 15:08 -0400
                Re: Learning about the Kernal ruben safir <dont@email.me> - 2015-03-18 03:36 +0000
                Re: Learning about the Kernal Dan Espen <despen@verizon.net> - 2015-03-18 10:09 -0400
                Re: Learning about the Kernal ruben safir <dont@email.me> - 2015-03-20 01:04 +0000
                Re: Learning about the Kernal Rich <rich@example.invalid> - 2015-03-20 10:58 +0000
                Re: Learning about the Kernal Dan Espen <despen@verizon.net> - 2015-03-20 09:22 -0400
                Re: Learning about the Kernal ruben safir <dont@email.me> - 2015-03-20 18:39 +0000
                Re: Learning about the Kernal Rich <rich@example.invalid> - 2015-03-20 20:04 +0000
                Re: Learning about the Kernal Dan Espen <despen@verizon.net> - 2015-03-20 21:10 -0400
                Re: Learning about the Kernal ruben safir <dont@email.me> - 2015-03-21 05:03 +0000
                Re: Learning about the Kernal ruben safir <dont@email.me> - 2015-03-20 18:42 +0000
                Re: Learning about the Kernal Dan Espen <despen@verizon.net> - 2015-03-20 15:31 -0400
                Re: Learning about the Kernal ruben safir <dont@email.me> - 2015-03-21 05:13 +0000
                Re: Learning about the Kernal The Natural Philosopher <tnp@invalid.invalid> - 2015-03-21 09:13 +0000
                Re: Learning about the Kernal ruben <nowhere@nowhere.nor> - 2015-03-21 14:40 +0000
                Re: Learning about the Kernal Michael Black <et472@ncf.ca> - 2015-03-21 12:20 -0400
                Re: Learning about the Kernal ruben safir <dont@email.me> - 2015-03-21 19:54 +0000
                Re: Learning about the Kernal Baho Utot <baho-utot@columbus.rr.com> - 2015-03-21 17:56 -0400
                Re: Learning about the Kernal ruben safir <dont@email.me> - 2015-03-21 19:56 +0000
                Re: Learning about the Kernal Richard Kettlewell <rjk@greenend.org.uk> - 2015-03-21 16:18 +0000
          Re: Learning about the Kernal Tauno Voipio <tauno.voipio@notused.fi.invalid> - 2015-03-17 16:10 +0200
            Re: Learning about the Kernal ruben safir <ruben@mrbrklyn.com> - 2015-03-17 14:06 -0400
              Re: Learning about the Kernal William Unruh <unruh@invalid.ca> - 2015-03-17 19:00 +0000
                Re: Learning about the Kernal Tim Watts <tw_usenet@dionic.net> - 2015-03-17 19:05 +0000
                Re: Learning about the Kernal Bobbie Sellers <bliss-sf4ever@dslextreme.com> - 2015-03-17 14:17 -0700
                Re: Learning about the Kernal William Unruh <unruh@invalid.ca> - 2015-03-19 06:04 +0000
                Re: Learning about the Kernal ruben safir <dont@email.me> - 2015-03-21 08:45 +0000
                Re: Learning about the Kernal ruben safir <dont@email.me> - 2015-03-21 08:20 +0000
                Re: Learning about the Kernal Rich <rich@example.invalid> - 2015-03-21 16:09 +0000
                Re: Learning about the Kernal ruben safir <dont@email.me> - 2015-03-21 20:10 +0000
              Re: Learning about the Kernal Tauno Voipio <tauno.voipio@notused.fi.invalid> - 2015-03-17 22:39 +0200
          Re: Learning about the Kernal Chick Tower <c.tower@deadspam.com> - 2015-03-18 03:35 +0000
            Re: Learning about the Kernal ruben safir <dont@email.me> - 2015-03-21 08:47 +0000
              Re: Learning about the Kernal Jerry Peters <jerry@example.invalid> - 2015-03-21 20:19 +0000
                Re: Learning about the Kernal ruben safir <dont@email.me> - 2015-03-21 20:30 +0000
                Re: Learning about the Kernal Jerry Peters <jerry@example.invalid> - 2015-03-22 20:05 +0000
                Re: Learning about the Kernal ruben safir <ruben@mrbrklyn.com> - 2015-03-23 01:16 -0400
                Re: Learning about the Kernal Jerry Peters <jerry@example.invalid> - 2015-03-23 20:27 +0000
                Re: Learning about the Kernal ruben safir <dont@email.me> - 2015-03-25 02:57 +0000
                Re: Learning about the Kernal ruben safir <dont@email.me> - 2015-03-25 02:59 +0000
                Re: Learning about the Kernal Jerry Peters <jerry@example.invalid> - 2015-03-25 20:59 +0000
                Re: Learning about the Kernal ruben safir <ruben@mrbrklyn.com> - 2015-04-20 09:44 -0400
                Re: Learning about the Kernal Aragorn <thorongil@telenet.be.invalid> - 2015-03-22 00:07 +0100
                Re: Learning about the Kernal ruben safir <dont@email.me> - 2015-03-22 00:07 +0000
                Re: Learning about the Kernal Aragorn <thorongil@telenet.be.invalid> - 2015-03-22 01:13 +0100
                Re: Learning about the Kernal ruben safir <dont@email.me> - 2015-03-22 03:11 +0000
                Re: Learning about the Kernal Aragorn <thorongil@telenet.be.invalid> - 2015-03-22 04:20 +0100
                Re: Learning about the Kernal ruben safir <dont@email.me> - 2015-03-22 13:19 +0000
                Re: Learning about the Kernal Rich <rich@example.invalid> - 2015-03-22 15:13 +0000
                Re: Learning about the Kernal Aragorn <thorongil@telenet.be.invalid> - 2015-03-22 21:52 +0100
                Re: Learning about the Kernal Jerry Peters <jerry@example.invalid> - 2015-03-22 20:13 +0000
                Re: Learning about the Kernal Aragorn <thorongil@telenet.be.invalid> - 2015-03-22 22:01 +0100
              Re: Learning about the Kernal Chick Tower <c.tower@deadspam.com> - 2015-03-23 04:02 +0000
                Re: Learning about the Kernal Aragorn <thorongil@telenet.be.invalid> - 2015-03-23 05:13 +0100
                Re: Learning about the Kernal ruben <ceo@iran.gov> - 2015-04-12 13:03 +0000
      Re: Learning about the Kernal ruben safir <dont@email.me> - 2015-03-17 05:18 +0000
      Re: Learning about the Kernal ruben safir <ruben@mrbrklyn.com> - 2015-03-17 01:52 -0400

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