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From: "Robin H. Johnson" <robbat2@gentoo.org>
To: gentoo-dev@lists.gentoo.org
Subject: Re: [gentoo-dev] Re: newsitem: unmasking udev-181
Date: Sun, 11 Mar 2012 22:57:33 +0000	[thread overview]
Message-ID: <robbat2-20120311T224413-086212141Z@orbis-terrarum.net> (raw)
In-Reply-To: <CAGfcS_nj8=1grGw6C4K8yFoJeUg0PiycbxiWOhbgS=vYQDgYbg@mail.gmail.com>

On Sat, Mar 10, 2012 at 09:53:25PM -0500, Rich Freeman wrote:
> On Sat, Mar 10, 2012 at 9:27 PM, William Hubbs <williamh@gentoo.org> wrote:
> > here is the udev 181 unmasking news item.
> >
> > If all goes well, this will be committed to the tree ?on 3/14 UTC.
> 
> I guess this might be OK for unstable, but before this goes stable we
> really need to improve the docs around this.  As far as I can tell
> neither the genkernel nor dracut docs have specific instructions about
> how to handle mounting /usr.  Since having a separate /usr is often
> the result of having a more complex configuration (nfs, lvm, mdraid,
> etc), instructions explaining how things work and how to handle
> variations is pretty important.  Perhaps genkernel automagically does
> the right thing in some cases, but I know that dracut does not unless
> you properly configure it.  I doubt either tool will handle more
> complex situations without some scripting.
With the new versions of genkernel as specified in the news item, you do
NOT need any specific instructions about /usr. Just upgrade your
genkernel and openrc, and (re)build your initramfs, done.

> Again, this is likely more of a concern before this is stabilized.
> However, knowing what I went through to get my bind-mounted /usr on
> LVM+mdraid working with dracut, I can imagine that any unstable users
> with tricky setups could face a fun weekend.
Your bind-mount /usr and a symlink at /usr to /home/usr are the most
troublesome cases for genkernel that I'm aware of.

For both of those cases, just add extra lines to /etc/initramfs.mounts
should suffice your needs. I realized that I hadn't given much
documentation in that file, so I added a much more detailed example in
genkernel-3.4.25-r1.

If you could please test your LVM+MDRAID+bind-mount setup with
genkernel-3.4.25-r1, I'd like to know your results.
genkernel --lvm --mdadm should cover most of it.

-- 
Robin Hugh Johnson
Gentoo Linux: Developer, Trustee & Infrastructure Lead
E-Mail     : robbat2@gentoo.org
GnuPG FP   : 11ACBA4F 4778E3F6 E4EDF38E B27B944E 34884E85



  parent reply	other threads:[~2012-03-11 22:58 UTC|newest]

Thread overview: 165+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-03-11  2:27 [gentoo-dev] newsitem: unmasking udev-181 William Hubbs
2012-03-11  2:53 ` [gentoo-dev] " Rich Freeman
2012-03-11  3:28   ` Luca Barbato
2012-03-11  3:50     ` Rich Freeman
2012-03-11  5:12       ` Luca Barbato
2012-03-11 17:33     ` William Hubbs
2012-03-11 17:35       ` Samuli Suominen
2012-03-11 18:00         ` Michał Górny
2012-03-13  1:22       ` [gentoo-dev] Let's redesign the entire filesystem! [was newsitem: unmasking udev-181] Joshua Kinard
2012-03-13  1:37         ` Kent Fredric
2012-03-13  2:16           ` Joshua Kinard
2012-03-13  2:33         ` Ian Stakenvicius
2012-03-13  3:14           ` Joshua Kinard
2012-03-13  3:53             ` Robin H. Johnson
2012-03-13  5:17               ` Luca Barbato
2012-03-14  0:20                 ` Joshua Kinard
2012-03-14  0:52                   ` Rich Freeman
2012-03-13 13:36             ` Ian Stakenvicius
2012-03-13 10:31         ` Jeroen Roovers
2012-03-13 11:54         ` James Broadhead
2012-03-14  0:16           ` Joshua Kinard
2012-03-14  8:39             ` [gentoo-dev] " Duncan
2012-03-14 12:40               ` [gentoo-dev] Re: Let's redesign the entire filesystem! Joshua Kinard
2012-03-14 14:41                 ` Greg KH
2012-03-14 14:51                   ` Philip Webb
2012-03-14 15:04                     ` Greg KH
2012-03-14 15:08                       ` Ciaran McCreesh
2012-03-14 15:22                         ` Greg KH
2012-03-14 15:59                           ` Ciaran McCreesh
2012-03-14 21:00                             ` Greg KH
2012-03-14 16:28                           ` Matthew Summers
2012-03-15 13:22                             ` Joshua Kinard
2012-03-14 17:11                           ` Maxim Kammerer
2012-03-14 17:29                             ` Zac Medico
2012-03-14 17:58                               ` Matthew Summers
2012-03-14 18:04                                 ` Ciaran McCreesh
2012-03-14 18:36                                 ` Maxim Kammerer
2012-03-14 18:56                                   ` Zac Medico
2012-03-14 19:14                                     ` Michael Orlitzky
2012-03-14 19:26                                       ` Zac Medico
2012-03-14 19:57                                     ` David Leverton
2012-03-14 21:04                                       ` Greg KH
2012-03-14 22:14                                         ` David Leverton
2012-03-14 22:51                                           ` Greg KH
2012-03-14 23:21                                             ` David Leverton
2012-03-14 23:44                                               ` Greg KH
2012-03-14 23:58                                                 ` Richard Yao
2012-03-15  0:07                                                   ` Greg KH
2012-03-15  0:29                                                 ` David Leverton
2012-03-15 11:20                                                   ` Stelian Ionescu
2012-03-15 12:23                                                     ` Joshua Kinard
2012-03-15 14:01                                                 ` Joshua Kinard
2012-03-14 23:47                                               ` Zac Medico
2012-03-15  0:36                                                 ` David Leverton
2012-03-15  0:45                                                   ` Zac Medico
2012-03-15  0:49                                                     ` David Leverton
2012-03-15 12:27                                                     ` Joshua Kinard
2012-03-15 15:29                                                       ` Zac Medico
2012-03-15  0:58                                                   ` Richard Yao
2012-03-15  1:06                                                     ` Zac Medico
2012-03-15  1:49                                                       ` Richard Yao
2012-03-16 23:29                                                         ` Zac Medico
2012-03-16 23:29                                                         ` Zac Medico
2012-03-15 12:16                                             ` Joshua Kinard
2012-03-15 12:09                                           ` Joshua Kinard
2012-03-14 22:39                                         ` Richard Yao
2012-03-14 22:49                                           ` Greg KH
2012-03-14 23:27                                             ` Richard Yao
2012-03-14 23:37                                               ` Greg KH
2012-03-14 23:51                                                 ` Richard Yao
2012-03-15  1:07                                                   ` Rich Freeman
2012-03-15  1:37                                                     ` Zac Medico
2012-03-15  1:44                                                     ` Richard Yao
2012-03-16  1:17                                                     ` Canek Peláez Valdés
2012-03-16  1:18                                                       ` Canek Peláez Valdés
2012-03-15  5:18                                                 ` Luca Barbato
2012-03-15  8:13                                                 ` Martin Gysel
2012-03-15 12:40                                                 ` Joshua Kinard
2012-03-15 20:44                                                   ` Richard Yao
2012-03-17  7:12                                                     ` Walter Dnes
2012-03-19  5:21                                                       ` Walter Dnes
2012-03-15 12:34                                               ` Joshua Kinard
2012-03-15 20:45                                                 ` Richard Yao
2012-03-15 21:49                                                   ` Maxim Kammerer
2012-03-14 20:03                                     ` Richard Yao
2012-03-14 20:55                                       ` Zac Medico
2012-03-14 21:05                                         ` Richard Yao
2012-03-15  4:10                                           ` Zac Medico
2012-03-15 12:47                                         ` Joshua Kinard
2012-03-15 13:36                                     ` Joshua Kinard
2012-03-14 19:30                                 ` Jeroen Roovers
2012-03-15  5:04                                 ` Luca Barbato
2012-03-14 17:59                               ` Rich Freeman
2012-03-15  5:24                                 ` Luca Barbato
2012-03-15 12:51                                 ` Joshua Kinard
2012-03-14 20:12                       ` Walter Dnes
2012-03-15 11:04                       ` Joshua Kinard
2012-03-15 12:30                         ` Rich Freeman
2012-03-15 13:05                           ` Joshua Kinard
2012-03-15 14:42                           ` Greg KH
2012-03-15 19:04                             ` Rich Freeman
2012-03-15 19:17                               ` [gentoo-dev] /dev/serial/ (was "Let's redesign the entire filesystem!") Greg KH
2012-03-15 19:41                                 ` Rich Freeman
2012-03-15 14:41                         ` [gentoo-dev] Re: Let's redesign the entire filesystem! Greg KH
2012-03-16  0:47                           ` Joshua Kinard
2012-03-16  2:43                             ` Greg KH
2012-03-16  3:01                               ` Richard Yao
2012-03-16 15:18                                 ` Greg KH
2012-03-16 17:00                                   ` Michael Orlitzky
     [not found]                                 ` <7c08803524244ff0808d16539b8f9926@HUBCAS2.cs.stonybrook.edu>
2012-03-16 22:41                                   ` Richard Yao
2012-03-13 14:41         ` [gentoo-dev] Let's redesign the entire filesystem! [was newsitem: unmasking udev-181] Marc Schiffbauer
2012-03-13 23:12           ` James Broadhead
2012-03-14 12:00           ` James Cloos
2012-03-14 17:52             ` Zac Medico
2012-03-14 18:48               ` [gentoo-dev] " Duncan
2012-03-14 20:10                 ` Kent Fredric
2012-03-15  6:33                   ` Duncan
2012-03-15 13:07                   ` Joshua Kinard
2012-03-13  5:11       ` [gentoo-dev] Re: newsitem: unmasking udev-181 Luca Barbato
2012-03-14  0:13         ` Joshua Kinard
2012-03-14  8:03           ` Duncan
2012-03-14 12:07             ` Joshua Kinard
2012-03-14 18:43               ` Duncan
2012-03-14 21:13               ` Walter Dnes
2012-03-15 13:10                 ` Joshua Kinard
2012-03-15 21:49                   ` Robin H. Johnson
2012-03-11  3:44   ` Dale
2012-03-11  5:48   ` Duncan
2012-03-11 11:03   ` Petteri Räty
2012-03-11 15:33     ` Zac Medico
2012-03-11 21:28       ` Petteri Räty
2012-03-11 21:43         ` William Hubbs
2012-03-11 21:48           ` Petteri Räty
2012-03-11 23:15             ` William Hubbs
2012-03-12 12:37               ` Rich Freeman
2012-03-12 17:01                 ` Matthias Hanft
2012-03-12 19:32                   ` Robin H. Johnson
2012-03-13 14:34               ` Petteri Räty
2012-03-11 22:57   ` Robin H. Johnson [this message]
2012-03-13  8:43   ` Walter Dnes
2012-03-13  9:14     ` Canek Peláez Valdés
2012-03-14  0:29       ` Joshua Kinard
2012-03-14  0:36         ` Stelian Ionescu
2012-03-14  1:04         ` Maxim Kammerer
2012-03-14  1:14         ` Robin H. Johnson
2012-03-14 13:02         ` Rich Freeman
2012-03-13 10:32     ` Robin H. Johnson
2012-03-11  6:49 ` Ryan Hill
2012-03-11 21:08   ` Robin H. Johnson
2012-03-11 23:03     ` Duncan
2012-03-11 23:14       ` Robin H. Johnson
2012-03-12  9:02         ` Duncan
2012-03-12 14:09     ` Marc Schiffbauer
2012-03-12 19:41       ` Robin H. Johnson
2012-03-13  2:06     ` Ryan Hill
2012-03-12 18:34   ` Sven Vermeulen
2012-03-13  2:04     ` Ryan Hill
2012-03-11  8:06 ` [gentoo-dev] " Neil Bothwick
2012-03-11  8:41   ` Michał Górny
2012-03-11  9:36     ` Neil Bothwick
2012-03-11 10:43       ` Michał Górny
2012-03-11 17:26 ` William Hubbs
2012-03-11 18:08   ` Ulrich Mueller
2012-03-11 23:09   ` [gentoo-dev] " Duncan
2012-03-12 20:50   ` [gentoo-dev] " Robin H. Johnson

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