* /dev/root changes with 3.17-rc
@ 2014-09-11 14:45 Norbert Preining
2014-10-10 12:40 ` Pavel Machek
0 siblings, 1 reply; 5+ messages in thread
From: Norbert Preining @ 2014-09-11 14:45 UTC (permalink / raw)
To: linux-kernel
Hi everyone,
(please cc)
I am not sure whether this is a kernel bug, but:
- booting with 3.16 I get
/ mounted on /dev/sda6
- booting with 3.17-rc* I get
/ mounted on /dev/root
The later case disturbs grub (cannot find root device) as there
is no /dev/root.
I normally to make oldconfig when compiling a new kernel, all of
the above are self-compiled.
Thanks
Norbert
------------------------------------------------------------------------
PREINING, Norbert http://www.preining.info
JAIST, Japan TeX Live & Debian Developer
GPG: 0x860CDC13 fp: F7D8 A928 26E3 16A1 9FA0 ACF0 6CAC A448 860C DC13
------------------------------------------------------------------------
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: /dev/root changes with 3.17-rc
2014-09-11 14:45 /dev/root changes with 3.17-rc Norbert Preining
@ 2014-10-10 12:40 ` Pavel Machek
2014-10-10 12:52 ` Norbert Preining
2014-10-12 19:55 ` Rafael J. Wysocki
0 siblings, 2 replies; 5+ messages in thread
From: Pavel Machek @ 2014-10-10 12:40 UTC (permalink / raw)
To: Norbert Preining, Rafael J. Wysocki; +Cc: linux-kernel
Hi!
> (please cc)
Rafael, as he tracks regressions.
> I am not sure whether this is a kernel bug, but:
> - booting with 3.16 I get
> / mounted on /dev/sda6
> - booting with 3.17-rc* I get
> / mounted on /dev/root
Where do you see the this? /proc/mounts?
Pavel
--
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: /dev/root changes with 3.17-rc
2014-10-10 12:40 ` Pavel Machek
@ 2014-10-10 12:52 ` Norbert Preining
2014-10-10 13:36 ` Pavel Machek
2014-10-12 19:55 ` Rafael J. Wysocki
1 sibling, 1 reply; 5+ messages in thread
From: Norbert Preining @ 2014-10-10 12:52 UTC (permalink / raw)
To: Pavel Machek; +Cc: Rafael J. Wysocki, linux-kernel
On Fri, 10 Oct 2014, Pavel Machek wrote:
> > I am not sure whether this is a kernel bug, but:
> > - booting with 3.16 I get
> > / mounted on /dev/sda6
> > - booting with 3.17-rc* I get
> > / mounted on /dev/root
>
> Where do you see the this? /proc/mounts?
After loads of testing I found out what is the problem: initramfs.
I normally compile my own kernel with all the drivers built-in,
and no initramfs ... and in this case, without initrd, it seems that
/ is somehow not remounted to a proper scsi device, but remains
at /dev/root.
Hope that helps
Norbert
------------------------------------------------------------------------
PREINING, Norbert http://www.preining.info
JAIST, Japan TeX Live & Debian Developer
GPG: 0x860CDC13 fp: F7D8 A928 26E3 16A1 9FA0 ACF0 6CAC A448 860C DC13
------------------------------------------------------------------------
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: /dev/root changes with 3.17-rc
2014-10-10 12:52 ` Norbert Preining
@ 2014-10-10 13:36 ` Pavel Machek
0 siblings, 0 replies; 5+ messages in thread
From: Pavel Machek @ 2014-10-10 13:36 UTC (permalink / raw)
To: Norbert Preining; +Cc: Rafael J. Wysocki, linux-kernel
On Fri 2014-10-10 21:52:57, Norbert Preining wrote:
> On Fri, 10 Oct 2014, Pavel Machek wrote:
> > > I am not sure whether this is a kernel bug, but:
> > > - booting with 3.16 I get
> > > / mounted on /dev/sda6
> > > - booting with 3.17-rc* I get
> > > / mounted on /dev/root
> >
> > Where do you see the this? /proc/mounts?
>
> After loads of testing I found out what is the problem: initramfs.
>
> I normally compile my own kernel with all the drivers built-in,
> and no initramfs ... and in this case, without initrd, it seems that
> / is somehow not remounted to a proper scsi device, but remains
> at /dev/root.
But that was always the case, no? Yes, it would be nice to
print real root device name in /proc/mounts, but it was
"broken" for as far as I can remember...
Pavel
--
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: /dev/root changes with 3.17-rc
2014-10-10 12:40 ` Pavel Machek
2014-10-10 12:52 ` Norbert Preining
@ 2014-10-12 19:55 ` Rafael J. Wysocki
1 sibling, 0 replies; 5+ messages in thread
From: Rafael J. Wysocki @ 2014-10-12 19:55 UTC (permalink / raw)
To: Pavel Machek; +Cc: Norbert Preining, linux-kernel
On Friday, October 10, 2014 02:40:12 PM Pavel Machek wrote:
> Hi!
>
> > (please cc)
>
> Rafael, as he tracks regressions.
I've not been doing that for quite some time now (like a couple of years) ...
^ permalink raw reply [flat|nested] 5+ messages in thread
end of thread, other threads:[~2014-10-12 19:34 UTC | newest]
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2014-09-11 14:45 /dev/root changes with 3.17-rc Norbert Preining
2014-10-10 12:40 ` Pavel Machek
2014-10-10 12:52 ` Norbert Preining
2014-10-10 13:36 ` Pavel Machek
2014-10-12 19:55 ` Rafael J. Wysocki
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