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Blaisorblade | 1 Apr 2006 02:45
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Re: [uml-user] 2.6.16-bb1 patch

On Friday 31 March 2006 18:47, Wesley Emeneker wrote:
> 64-bit kernel, gcc 3.4.4-2, Centos 4.2

Ah, ok, then the key is in the CentOS kernel headers, which are different from 
normal ones (they use linux-libc-headers IIRC). Will put the proper patch in 
next -bb.

> Blaisorblade wrote:
> >On Friday 31 March 2006 02:52, Wesley Emeneker wrote:
> >>I just downloaded the 2.6.16-bb1 patch and tried to compile against
> >> 2.6.16. I encountered a problem in arch/um/drivers/cow_sys.h,cow.h, and
> >> cow_user.c
> >>
> >>arch/um/drivers/cow_sys.h: In function `cow_file_size':
> >>arch/um/drivers/cow_sys.h:33: warning: passing arg 2 of `os_file_size'
> >>from incompatible pointer type
> >>arch/um/drivers/cow_user.c: In function `write_cow_header':
> >>arch/um/drivers/cow_user.c:232: warning: passing arg 2 of
> >>`cow_file_size' from incompatible pointer type
> >>arch/um/drivers/cow_user.c: At top level:
> >>arch/um/drivers/cow_user.c:274: error: conflicting types for
> >>'read_cow_header'
> >>arch/um/drivers/cow.h:50: error: previous declaration of
> >>'read_cow_header' was here
> >>arch/um/drivers/cow_user.c:274: error: conflicting types for
> >>'read_cow_header'
> >>arch/um/drivers/cow.h:50: error: previous declaration of
> >>'read_cow_header' was here
> >>
> >>
(Continue reading)

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xpto09 | 1 Apr 2006 02:50
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[uml-user] descriptor referring to the console


I have finished the linux from scratch.
So I have started a root_fs from scratch too.

When I run the command:

loadkeys br-abnt2.map.gz

There is the message:

couldnt get a descriptor referring to the console

I found a possible solution:
chmod u+s loadkeys

However, this not solved the error.

The list of the /dev is:


drwxr-xr-x   2 root root  1024 2006-03-31 21:51 .
drwxr-xr-x  17 root root  1024 2006-03-31 20:43 ..
crw-------   1 root root  5, 1 2006-03-31 20:43 console
lrwxrwxrwx   1 root root    11 2006-03-31 20:43 core -> /proc/kcore
-rw-r--r--   1 root root     0 2006-03-31 21:52 dev.txt
crw-r--r--   1 root root 14, 3 2006-03-31 20:43 dsp
brw-r--r--   1 root root  2, 0 2006-03-31 20:43 fd0
brw-r-----   1 root root  3, 0 2006-03-31 20:43 hda
brw-r-----   1 root root  3, 1 2006-03-31 20:43 hda1
brw-r-----   1 root root  3, 2 2006-03-31 20:43 hda2
brw-r-----   1 root root  3, 3 2006-03-31 20:43 hda3
brw-r-----   1 root root  3, 4 2006-03-31 20:43 hda4
prw-------   1 root root     0 2006-03-31 21:51 initctl
crw-r--r--   1 root root 14, 0 2006-03-31 20:43 mixer
crw-r--r--   1 root root  1, 3 2006-03-31 20:43 null
crw-r--r--   1 root root  5, 2 2006-03-31 20:43 ptmx
brw-------   1 root root  1, 0 2006-03-31 20:43 ram0
brw-r--r--   1 root root  1, 1 2006-03-31 20:43 ram1
brw-r--r--   1 root root  1, 2 2006-03-31 20:43 ram2
brw-r--r--   1 root root  1, 3 2006-03-31 20:43 ram3
crw-r--r--   1 root root  1, 8 2006-03-31 20:43 random
brw-r-----   1 root root  8, 0 2006-03-31 20:43 sda
brw-r-----   1 root root  8, 1 2006-03-31 20:43 sda1
brw-r-----   1 root root  8, 2 2006-03-31 20:43 sda2
brw-r-----   1 root root  8, 3 2006-03-31 20:43 sda3
brw-r-----   1 root root  8, 4 2006-03-31 20:43 sda4
lrwxrwxrwx   1 root root    15 2006-03-31 20:43 stderr -> /proc/self/fd/2
lrwxrwxrwx   1 root root    15 2006-03-31 20:43 stdin -> /proc/self/fd/0
lrwxrwxrwx   1 root root    15 2006-03-31 20:43 stdout -> /proc/self/fd/1
crw-r--r--   1 root root  5, 0 2006-03-31 20:43 tty
crw-r--r--   1 root root  4, 0 2006-03-31 20:43 tty0
crw-------   1 root root  4, 1 2006-03-31 21:27 tty1
crw-------   1 root root  4, 2 2006-03-31 21:27 tty2
crw-------   1 root root  4, 3 2006-03-31 20:43 tty3
crw-------   1 root root  4, 4 2006-03-31 20:43 tty4
crw-------   1 root root  4, 5 2006-03-31 20:43 tty5
crw-------   1 root root  4, 6 2006-03-31 20:43 tty6
crw-------   1 root root  4, 7 2006-03-31 20:43 tty7
crw-------   1 root root  4, 8 2006-03-31 20:43 tty8
crw-------   1 root root  4, 9 2006-03-31 20:43 tty9
cr--r--r--   1 root root  1, 9 2006-03-31 20:43 urandom
crw-------   1 root root  7, 0 2006-03-31 20:43 vcs
crw-r--r--   1 root root  1, 5 2006-03-31 20:43 zero


How can I solve this?

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Blaisorblade | 1 Apr 2006 02:53
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Re: [uml-user] sharing file system when usinf more than one UML

On Friday 31 March 2006 16:07, maheswar reddy wrote:
> <P>hi</P>
> <P>&nbsp;</P>
> <P>i am able 2 run one lUML with out any problem.</P>
> <P>while running second UML ,i am getting error like&nbsp;&nbsp; select
> proper&nbsp; roo_fs .</P> <P>how can i run more than one UML&nbsp; ?</P>

Use COW files, read docs for that at:

http://user-mode-linux.sourceforge.net/shared_fs.html 

> <P>please try 2 help </P>
> <P>byeeee</P>

--

-- 
Inform me of my mistakes, so I can keep imitating Homer Simpson's "Doh!".
Paolo Giarrusso, aka Blaisorblade (Skype ID "PaoloGiarrusso", ICQ 215621894)
http://www.user-mode-linux.org/~blaisorblade

	

	
		
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maheswar reddy | 1 Apr 2006 12:32
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[uml-user] Running Multiple UMLs

 
hi

for running Multi UML, can i maintain  that many seperate kernel pool and file systems.

i come 2 know that we can share file systems between virtual machine but what about kernel software.

whether i should maintain kernel software for each of virtual machine ?



please expain me
byee



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David Arendt | 1 Apr 2006 18:02

[uml-user] recommended host linux 64bit/32bit

Hi,

I am migrating my dedicated server to a Pentium D820 2.8 ghz CPU (dual 
core). This cpu supports EM64T. This machine would only be used to run 
user-mode linuxes. No software (except ssh) would run on the host linux. 
As skas3 seems to be not fully supported on 64bit systems, would you 
suggest installing a 32-bit or a 64-bit linux as host. Will skas3 
support for 64-bit host linux soon be fully supported ? I am asking this 
because due to the fact the server is running at a remote location, 
having someone installing me another host os would be costly.

Thanks in advance
Bye,
David Arendt

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Matt Palmer | 1 Apr 2006 21:41
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[uml-user] Re: Running Multiple UMLs

On Sat, Apr 01, 2006 at 10:32:31AM -0000, maheswar reddy wrote:
> for running Multi UML, can i maintain  that many seperate kernel pool and file systems.
> 
> i come 2 know that we can share file systems between virtual machine but what about kernel software.
> 
> whether i should maintain kernel software for each of virtual machine ?

Uhm, I *think* the answer to your question is "no, unless you want to run
different kernel versions in different UMLs".

- Matt

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Blaisorblade | 4 Apr 2006 02:43
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Re: [uml-user] descriptor referring to the console

On Saturday 01 April 2006 02:50, xpto09 wrote:
> I have finished the linux from scratch.
> So I have started a root_fs from scratch too.
>
> When I run the command:
>
> loadkeys br-abnt2.map.gz
>
> There is the message:
>
> couldnt get a descriptor referring to the console
>
> I found a possible solution:
> chmod u+s loadkeys

loadkeys isn't supposed to work in UML. We don't implement font switching 
(consolefonts handling), and we don't interact at all with the keybord. 
That's all.
--

-- 
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Paolo Giarrusso, aka Blaisorblade (Skype ID "PaoloGiarrusso", ICQ 215621894)
http://www.user-mode-linux.org/~blaisorblade

	
	
		
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Blaisorblade | 4 Apr 2006 02:48
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Re: [uml-user] recommended host linux 64bit/32bit

On Saturday 01 April 2006 18:02, David Arendt wrote:
> Hi,
>
> I am migrating my dedicated server to a Pentium D820 2.8 ghz CPU (dual
> core). This cpu supports EM64T. This machine would only be used to run
> user-mode linuxes. No software (except ssh) would run on the host linux.
> As skas3 seems to be not fully supported on 64bit systems, would you
> suggest installing a 32-bit or a 64-bit linux as host. Will skas3
> support for 64-bit host linux soon be fully supported ?

Well, we've just discovered that the most important part (for performance) of 
SKAS3 *is* supported (instead of "mode=skas0"/"skas0" pass simply "noprocmm", 
the UML will run happily).

I don't have data about the performance loss, but I think on this side it'd be 
not big.

However, the SYSEMU code isn't implemented for x86_64. And that is a bigger 
problem indeed for performance. Look at the end of

http://sysemu.sourceforge.net/

But ignore the "60%" number since it's a micro-benchmark (i.e. unlikely to 
represent a real application). The 33% one is more realistic.

> I am asking this 
> because due to the fact the server is running at a remote location,
> having someone installing me another host os would be costly.

--

-- 
Inform me of my mistakes, so I can keep imitating Homer Simpson's "Doh!".
Paolo Giarrusso, aka Blaisorblade (Skype ID "PaoloGiarrusso", ICQ 215621894)
http://www.user-mode-linux.org/~blaisorblade

	

	
		
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Nicolas Boullis | 4 Apr 2006 11:42
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[uml-user] UML + iSCSI

Hi,

I'm willing to play with iSCSI, but lacking physical machines, I thought
I could play with iSCSI with UML hosts. Unfortunately, while iSCSI is
supported with 2.6.15.4 i386 kernels, it is not supported with 2.6.15.4
UML kernels. Is it supposed not to work or is the option simply lacking
in the configuration?

If it is supposed to work, would it be possible to add the otion to the
configuration for 2.6.17 (or 2.6.18 if it's too late)? I think iSCSI is
as useful as nbd, which seems to be supported.

Thanks,

Nicolas Boullis

PS: I'm not subscribed to this list; please CC your replies to me.

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Phill Wombat | 4 Apr 2006 15:59

[uml-user] FC5 anybody?

It's here..... anyone have it running under UML?

Cheers
Phill.

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Gmane