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alastairII
n00b
Joined: 02 Jul 2004
Posts: 67
Location: Berkeley, CA
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 Posted: Sun Jan 22, 2006 2:36 am Post subject: |
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| Since this seems to be a problem in Portage, perhaps one of the mods should move it to the Portage forum. |
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glober
Tux's lil' helper
Joined: 20 Oct 2002
Posts: 77
Location: Vancouver, Canada
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| Posted: Sun Jan 22, 2006 3:35 am Post subject: |
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| mwojc wrote: | I think, you should recompile your kernel with the options:
| Code: | File systems --->
Pseudo Filesystems --->
[*] /dev file system support (OBSOLETE)
[ ] Automatically mount at boot |
where 'Automatically mount at boot' HAVE TO BE DISABLED. See http://www.gentoo.org/doc/en/udev-guide.xml
This change in my kernel configuration helped, and the usual names of the devices are still in my /etc/fstab... |
I tried this and it doesn't work for me. When I uncheck "Automaticaly mount at boot" X doesn't start because there is a problem loading the mouse, saying that "core device is missing" or some such message. |
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Genone
Retired Dev
Joined: 14 Mar 2003
Posts: 9611
Location: beyond the rim
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| Posted: Sun Jan 22, 2006 7:15 am Post subject: |
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| Did anyone file a bugreport about this yet? |
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glober
Tux's lil' helper
Joined: 20 Oct 2002
Posts: 77
Location: Vancouver, Canada
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| Posted: Sun Jan 22, 2006 9:40 am Post subject: |
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| created bugreport #119894 just now |
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Paapaa
l33t
Joined: 14 Aug 2005
Posts: 955
Location: Finland
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| Posted: Sun Jan 22, 2006 1:15 pm Post subject: |
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| glober wrote: | | created bugreport #119894 just now |
I added my case (x86/stable) there:
- I'm using baselayout-1.11.14-r2
- I'm using udev-079-r1
- Everything works fine with gentoo-sources-2.6.14-r5
I get the error only with gentoo-sources-2.6.15-r1. So this might be a kernel issue also? |
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[vector]
Apprentice
Joined: 02 Nov 2004
Posts: 170
Location: France, Le Havre
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| Posted: Sun Jan 22, 2006 10:04 pm Post subject: |
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Exaclty same problem, all works fine with baselayout-1.11.14-r2, udev-079-r1 AND kernel-2.6.14-r5 but boot fails with
| Code: | | /dev/hda6 no such file or directory |
if i try kernel-2.6.15-r1.
_________________
[Gentoo 2.6.10-r6 + WinXP] - [Gentoo 2.6.10-r9 + Win98]
Admon - Dernière capture d'écran - Jabber : vector@jabber.fr |
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glober
Tux's lil' helper
Joined: 20 Oct 2002
Posts: 77
Location: Vancouver, Canada
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| Posted: Mon Jan 23, 2006 3:38 am Post subject: |
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| glober wrote: | | mwojc wrote: | I think, you should recompile your kernel with the options:
| Code: | File systems --->
Pseudo Filesystems --->
[*] /dev file system support (OBSOLETE)
[ ] Automatically mount at boot |
where 'Automatically mount at boot' HAVE TO BE DISABLED. See http://www.gentoo.org/doc/en/udev-guide.xml
This change in my kernel configuration helped, and the usual names of the devices are still in my /etc/fstab... |
I tried this and it doesn't work for me. When I uncheck "Automaticaly mount at boot" X doesn't start because there is a problem loading the mouse, saying that "core device is missing" or some such message. |
It turns out that disabling 'Automatically mount at boot' does fix the problem with using a newer baselayout. I had to change my xorg.conf file form /dev/mouse to /dev/input/mice to take care of the X problem, but after that I emerged baselayout 1.11.14-r2 , and all is working now. Thankyou mwojc |
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Paapaa
l33t
Joined: 14 Aug 2005
Posts: 955
Location: Finland
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| Posted: Mon Jan 23, 2006 12:21 pm Post subject: |
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| glober wrote: | | It turns out that disabling 'Automatically mount at boot' does fix the problem with using a newer baselayout. I had to change my xorg.conf file form /dev/mouse to /dev/input/mice to take care of the X problem, but after that I emerged baselayout 1.11.14-r2 , and all is working now. Thankyou mwojc |
Yes, but you are using a very old kernel without udev. That option is no longer present in newer kernels.
There is, however, still the issue with 2.6.15-r1 and latest udev. I'll report a bug if noone has done that already.
Basically:
baselayout-1.11.14-r2 + udev-079-r1 + gentoo-sources-2.6.15-r1 == won't work.
baselayout-1.11.14-r2 + udev-070-r1 + gentoo-sources-2.6.15-r1 == works.
baselayout-1.11.14-r2 + udev-079-r1 + gentoo-sources-2.6.14-r5 == works.
I don't know if baselayout version has anything to do with this. |
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minaguib
n00b
Joined: 03 Nov 2003
Posts: 35
Location: Montréal
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| Posted: Mon Jan 23, 2006 6:10 pm Post subject: |
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| I've just updateded bug #119894 with some more details regarding this. |
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chance2105
Tux's lil' helper
Joined: 10 Jun 2004
Posts: 112
Location: Norman, OK USA
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| Posted: Mon Jan 23, 2006 7:19 pm Post subject: |
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Yeah .. the bug on b.g.o was closed:
| Quote: |
------- Comment #10 From Greg Kroah-Hartman 2006-01-22 21:03 PST [reply] -------
That means that you are using devfs (or were using devfs), so why
were you trying to use udev?
Anyway, am closing this.
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This is totally a bug somebody needs to look at. It is not a "mystery" of "misconfiguration" bug. DEVFS isn't even an *option* in newer kernels. |
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minaguib
n00b
Joined: 03 Nov 2003
Posts: 35
Location: Montréal
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| Posted: Mon Jan 23, 2006 8:09 pm Post subject: |
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| chance2105 wrote: | Yeah .. the bug on b.g.o was closed:
| Quote: |
------- Comment #10 From Greg Kroah-Hartman 2006-01-22 21:03 PST [reply] -------
That means that you are using devfs (or were using devfs), so why
were you trying to use udev?
Anyway, am closing this.
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This is totally a bug somebody needs to look at. It is not a "mystery" of "misconfiguration" bug. DEVFS isn't even an *option* in newer kernels. |
Re-check the bug report.
Enabling HOTPLUG support in the kernel fixed it for me and at least one other person. |
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Paapaa
l33t
Joined: 14 Aug 2005
Posts: 955
Location: Finland
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| Posted: Mon Jan 23, 2006 9:24 pm Post subject: |
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| minaguib wrote: | | Enabling HOTPLUG support in the kernel fixed it for me and at least one other person. |
Is that a proper fix or a workaround? Why did it work without HOTPLUG in 2.6.14 and why is it now required? Will an updated udev remove the need for HOTPLUG? |
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Paapaa
l33t
Joined: 14 Aug 2005
Posts: 955
Location: Finland
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| Posted: Mon Jan 23, 2006 10:26 pm Post subject: |
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| Paapaa wrote: | | Is that a proper fix or a workaround? Why did it work without HOTPLUG in 2.6.14 and why is it now required? Will an updated udev remove the need for HOTPLUG? |
This is from http://www.kernel.org/pub/linux/utils/kernel/hotplug/udev.html:
| Quote: | | It (udev) requires a 2.6 Linux kernel with CONFIG_HOTPLUG enabled to run. It is recommended that you also have the Linux Hotplug scripts installed, but it is not necessary for it to work properly. |
So yes, Hotplug support is required to be able to use udev. I wonder why udev worked without Hotplug in 2.6.14? |
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chance2105
Tux's lil' helper
Joined: 10 Jun 2004
Posts: 112
Location: Norman, OK USA
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| Posted: Mon Jan 23, 2006 11:46 pm Post subject: |
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| Code: | chance@hoss / $ cat /usr/src/linux-2.6.15.1/.config |grep HOTPLUG
CONFIG_HOTPLUG=y
chance@hoss / $ uname -a
Linux hoss 2.6.15.1 #3 SMP PREEMPT Tue Jan 17 11:24:22 CST 2006 sparc64 sun4u TI UltraSparc II (BlackBird) GNU/Linux
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Well, it's enabled in my config. Although it seems unlikely, maybe this is an exception for my architecture (new udev+baselayout not working with 2.6.15 kernels). |
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chance2105
Tux's lil' helper
Joined: 10 Jun 2004
Posts: 112
Location: Norman, OK USA
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| Posted: Tue Jan 24, 2006 12:13 am Post subject: |
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Ok, so I reviewed everything in my setup, looking at http://www.gentoo.org/doc/en/udev-guide.xml
The following are enabled in my kernel config:
| Code: | General setup --->
[*] Support for hot-pluggable devices
File systems --->
Pseudo filesystems --->
[*] /proc file system support
[*] Virtual memory file system support (former shm fs) |
.. exactly as listed. I can't enable DEVFS because it's non-existant in this kernel.
The guide then goes on to list "Known Issues: Missing device node files at boot", and gives as an exaple /dev/null and /dev/console missing giving trouble on boot. So I followed the next little snippet to check what /dev/ nodes are available at boot:
| Code: | # mkdir test
# mount --bind / test
# cd test/dev
# ls |
.. and all /dev/sdaX nodes are there. I noticed when I had trouble booting, that in /dev/ I had sda10-sda15, but not sda1-sda9.
The other section deals with coldplug and hotplug. I have neither installed on my system, but if I'm correct, neither of them have any bearing on the root filesystem mounting (is this true?).
Other than that, I'm not sure what to check out. Am I missing something obvious? |
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lost-distance
n00b
Joined: 10 Apr 2003
Posts: 73
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| Posted: Tue Jan 24, 2006 12:01 pm Post subject: |
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This morning I also found my system to be broken when booting up. I quickly determined that the /dev/hda and /dev/hda[1-4] nodes were missing. These are precisely the nodes present under /sys/block/hda. Strangely, all other /dev/hd* nodes were present, even /dev/hda5 onwards. I use udev with Linux 2.6.15.
I fixed my system by setting RC_DEVICES="static" in /etc/conf.d/rc and thus falling back to static /dev nodes.
What had changed? Yesterday I had updated udev to udev-079-r1. So my feeling is that udev-079-r1 is the culprit. |
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Paapaa
l33t
Joined: 14 Aug 2005
Posts: 955
Location: Finland
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| Posted: Tue Jan 24, 2006 12:41 pm Post subject: |
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| lost-distance wrote: | | This morning I also found my system to be broken when booting up. I quickly determined that the /dev/hda and /dev/hda[1-4] nodes were missing. These are precisely the nodes present under /sys/block/hda. Strangely, all other /dev/hd* nodes were present, even /dev/hda5 onwards. I use udev with Linux 2.6.15. |
Just to make sure: do you have Hotplug support enabled in kernel? |
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chance2105
Tux's lil' helper
Joined: 10 Jun 2004
Posts: 112
Location: Norman, OK USA
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| Posted: Tue Jan 24, 2006 1:19 pm Post subject: |
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| lost-distance wrote: | | This morning I also found my system to be broken when booting up. I quickly determined that the /dev/hda and /dev/hda[1-4] nodes were missing. These are precisely the nodes present under /sys/block/hda. Strangely, all other /dev/hd* nodes were present, even /dev/hda5 onwards. I use udev with Linux 2.6.15.. |
That sounds strikingly familiar to my post immediately prior to yours -- the /dev/ nodes that are needed are missing, but the *others* are present. Do check to make sure CONFIG_HOTPLUG is enabled in your kernel, and follow the advice in the Gentoo UDEV guide.
I haven't tried it yet, but this evening when I get home (gah, the day job) I'll give my system a shot with a 2.6.14 kernel, to see if there's any difference for myself -- others have reported it works, but the fix others are using on their systems (enable CONFIG_HOTPLUG) with 2.6.15 doesn't help me since it was already enabled .. |
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lost-distance
n00b
Joined: 10 Apr 2003
Posts: 73
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| Posted: Tue Jan 24, 2006 3:08 pm Post subject: |
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| My 2.6.15 kernel didn't have CONFIG_HOTPLUG set. So I set it, and udev-079-r1 now works properly. Thanks guys. |
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