[uml-devel] Which version to use

[uml-devel] Which version to use

[Alejandro Liu]

Hi,

What is a "current" version of UML to use as a guest?  I am currently using 
the one that comes with the vanilla 2.6.17.6 kernel and trying to use hostfs 
as root and found a number of bugs.

Of course I went ahead and fixed those bugs but I don't know if I should 
send the patches somewhere or if these bugs were fixed in some "secret" 
development version of UML.

PS: Actually I did not set out to do bug hunting, I was just adding some 
features to hostfs that I wanted to use.  The bug fixing was just a side 
effect.

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Re: [uml-devel] Which version to use

[Blaisorblade]

On Tuesday 08 August 2006 06:52, Alejandro Liu wrote:
> Hi,
>
> What is a "current" version of UML to use as a guest?  I am currently using
> the one that comes with the vanilla 2.6.17.6 kernel and trying to use
> hostfs as root and found a number of bugs.

> Of course I went ahead and fixed those bugs but I don't know if I should
> send the patches somewhere 

Yes, thanks. To this list, Jeff Dike and me (and if you want LKML, but don't 
do that if you're shy or not entirely sure).

> or if these bugs were fixed in some "secret" 
> development version of UML.

No. hostfs is _at the moment_ unmaintained. There is a rewrite of hostfs 
(based on the new externfs), but it is nowhere near merging (it's under slow 
development since at least an year).

You can find the development tree here:
http://user-mode-linux.sourceforge.net/patches.html

> PS: Actually I did not set out to do bug hunting, I was just adding some
> features to hostfs that I wanted to use.
You could maybe post them too.
> The bug fixing was just a side 
> effect.
-- 
Inform me of my mistakes, so I can keep imitating Homer Simpson's "Doh!".
Paolo Giarrusso, aka Blaisorblade
http://www.user-mode-linux.org/~blaisorblade
Chiacchiera con i tuoi amici in tempo reale! 
 http://it.yahoo.com/mail_it/foot/*http://it.messenger.yahoo.com 


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Re: [uml-devel] Which version to use

[Alejandro Liu]

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Since I am shy, I am posting this here (and not to the LKML).

I am including to patch files:

    patch-hostfsfix.gz

This one fixes a crash when trying to mount hostfs, an error on how the 
mount options were
passed and fixed the setattr to set the time correctly (touch command works 
now).

   patch-frhost.gz

This is a hack of hostfs.  Essentially it adds a new filesystem type to UML, 
frhost.  This
filesystem is nearly identical to hostfs except one big difference:  It 
stores and uses file ownership,
permissions and mknod data from an external ".meta" file.  All files under 
frhost are created using
0700 mode and owned by the UID of the UML process, however, internally, 
these files may be owned by the UML users.  I guess this is similar to HUMFS 
(but I couldn't find it before I made my own).

BTW, frhost is limited to run over filesystems that use real i-node numbers. 
  So it will not work over FAT file systems, for example.

PS: I have succesfully tested frhost as root file system and also compiling 
the linux kernel.

>From: Blaisorblade <blaisorblade@yahoo.it>
>To: user-mode-linux-devel@lists.sourceforge.net
>CC: "Alejandro Liu" <alejandro_liu@hotmail.com>
>Subject: Re: [uml-devel] Which version to use
>Date: Tue, 8 Aug 2006 20:29:53 +0200
>
>On Tuesday 08 August 2006 06:52, Alejandro Liu wrote:
> > Hi,
> >
> > What is a "current" version of UML to use as a guest?  I am currently 
>using
> > the one that comes with the vanilla 2.6.17.6 kernel and trying to use
> > hostfs as root and found a number of bugs.
>
> > Of course I went ahead and fixed those bugs but I don't know if I should
> > send the patches somewhere
>
>Yes, thanks. To this list, Jeff Dike and me (and if you want LKML, but 
>don't
>do that if you're shy or not entirely sure).
>
> > or if these bugs were fixed in some "secret"
> > development version of UML.
>
>No. hostfs is _at the moment_ unmaintained. There is a rewrite of hostfs
>(based on the new externfs), but it is nowhere near merging (it's under 
>slow
>development since at least an year).
>
>You can find the development tree here:
>http://user-mode-linux.sourceforge.net/patches.html
>
> > PS: Actually I did not set out to do bug hunting, I was just adding some
> > features to hostfs that I wanted to use.
>You could maybe post them too.
> > The bug fixing was just a side
> > effect.
>--
>Inform me of my mistakes, so I can keep imitating Homer Simpson's "Doh!".
>Paolo Giarrusso, aka Blaisorblade
>http://www.user-mode-linux.org/~blaisorblade
>Chiacchiera con i tuoi amici in tempo reale!
>  http://it.yahoo.com/mail_it/foot/*http://it.messenger.yahoo.com

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[-- Attachment #5: Type: text/plain, Size: 194 bytes --]

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