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Re: Linux Wheezy just compiled 3.2.65 kernel does not see UUID of my 1st partition anymore.

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On Saturday 28 February 2015 14:29, Pascal Hambourg conveyed the 
following to comp.os.linux.misc...

> Aragorn a écrit :
>> On Friday 27 February 2015 21:47, Pascal Hambourg conveyed the
>> following to comp.os.linux.misc...
>> 
>>> Aragorn a écrit :
>>>
>>>> The kernel does not by itself support UUIDs or LABELs.
>>> The kernel does not support filesystem-level UUIDs. While replying
>>> to the OP's same question in another newsgroup, I found out that
>>> since version 2.6.37 the kernel supports *partition* UUIDs for
>>> partition schemes which have them, such as GPT. Since version 3.8 it
>>> can emulate partition UUIDs for legacy MBR/MS-DOS partition scheme
>>> by combining the disk signature and partition number. The syntax to
>>> specify the root by its partition UUID is
>>> "root=PARTUUID=<part_uuid>".
>> 
>> That is certainly useful information - I have no experience yet with
>> GPT
> 
> You should really give it a try. GPT is not reserved for modern UEFI
> systems or disks larger than 2 TiB.
> 
>> - especially for those of us who wish to roll their own kernel and
>> refuse to use an initrd. [*]
>> 
>> [*] Well, provided that you're not using systemd, of course, because
>>     if you are and you have /usr on a separate partition, you'll
>>     still need an initrd on RedHat/CentOS, Fedora, Mageia, Mandriva
>>     and possibly openSUSE.
> 
> Actually the separate /usr issue has nothing to do with systemd.
> Systemd itself works fine with a separate /usr mounted late (according
> to systemd developpers [*]). The main issue is that other software
> such as all the stuff which may be run by udev need /usr to be mounted
> early, before filesystems in fstab are mounted.
> 
> [*]
> http://freedesktop.org/wiki/Software/systemd/separate-usr-is-broken/

I hear what you're saying, but the distributions I've listed higher up 
are making /bin, /lib{,64} and /sbin into symbolic links to their 
counterparts under /usr.  This was a RedHat initiative which the others 
─ as RedHat spin-offs ─ have inherited.  So the systems based upon 
RedHat and having systemd will have systemd itself parked under /usr as 
well, plus everything else that used to be on the root filesystem.

Ergo, so long as one does not have /usr as a separate filesystem, those 
distributions can be booted without an initramfs ─ provided of course 
that every module needed is built into the kernel statically ─ and if 
/usr is on a separate filesystem, then an initramfs is required to be 
able to properly initiate userspace.

It may not be systemd-specific, but it's either way related to RedHat, 
as systemd itself is (and as freedesktop.org is, for that matter).

-- 
= Aragorn =

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

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Linux Wheezy just compiled 3.2.65 kernel does not see UUID of my 1st partition anymore. Pim <moi@free.fr> - 2015-02-23 14:18 +0000
  Re: Linux Wheezy just compiled 3.2.65 kernel does not see UUID of my 1st partition anymore. Aragorn <thorongil@telenet.be.invalid> - 2015-02-23 18:37 +0100
    Re: Linux Wheezy just compiled 3.2.65 kernel does not see UUID of my 1st partition anymore. Pim <moi@free.fr> - 2015-02-23 18:32 +0000
      Re: Linux Wheezy just compiled 3.2.65 kernel does not see UUID of my 1st partition anymore. Aragorn <thorongil@telenet.be.invalid> - 2015-02-23 19:43 +0100
        Re: Linux Wheezy just compiled 3.2.65 kernel does not see UUID of my 1st partition anymore. Pim <moi@free.fr> - 2015-02-23 19:30 +0000
          Re: Linux Wheezy just compiled 3.2.65 kernel does not see UUID of my 1st partition anymore. Aragorn <thorongil@telenet.be.invalid> - 2015-02-24 09:08 +0100
      Re: Linux Wheezy just compiled 3.2.65 kernel does not see UUID of my 1st partition anymore. "David W. Hodgins" <dwhodgins@nomail.afraid.org> - 2015-02-23 17:50 -0500
        Re: Linux Wheezy just compiled 3.2.65 kernel does not see UUID of my 1st partition anymore. Pim <moi@free.fr> - 2015-02-24 02:41 +0000
          Re: Linux Wheezy just compiled 3.2.65 kernel does not see UUID of my 1st partition anymore. "David W. Hodgins" <dwhodgins@nomail.afraid.org> - 2015-02-24 01:29 -0500
            Re: Linux Wheezy just compiled 3.2.65 kernel does not see UUID of my 1st partition anymore. Pim <moi@free.fr> - 2015-02-24 18:32 +0000
            Re: Linux Wheezy just compiled 3.2.65 kernel does not see UUID of my 1st partition anymore. Jerry Peters <jerry@example.invalid> - 2015-02-24 21:16 +0000
    Re: Linux Wheezy just compiled 3.2.65 kernel does not see UUID of my 1st partition anymore. Pascal Hambourg <boite-a-spam@plouf.fr.eu.org> - 2015-02-27 21:47 +0100
      Re: Linux Wheezy just compiled 3.2.65 kernel does not see UUID of my 1st partition anymore. Pim <moi@free.fr> - 2015-02-27 23:43 +0000
      Re: Linux Wheezy just compiled 3.2.65 kernel does not see UUID of my 1st partition anymore. Aragorn <thorongil@telenet.be.invalid> - 2015-02-28 00:44 +0100
        Re: Linux Wheezy just compiled 3.2.65 kernel does not see UUID of my 1st partition anymore. Pascal Hambourg <boite-a-spam@plouf.fr.eu.org> - 2015-02-28 14:29 +0100
          Re: Linux Wheezy just compiled 3.2.65 kernel does not see UUID of my 1st partition anymore. Aragorn <thorongil@telenet.be.invalid> - 2015-02-28 21:10 +0100
            Re: Linux Wheezy just compiled 3.2.65 kernel does not see UUID of my 1st partition anymore. Pascal Hambourg <boite-a-spam@plouf.fr.eu.org> - 2015-03-01 10:40 +0100

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