[ help! ] tools/libxl/libxl.c is of no use?

[ help! ] tools/libxl/libxl.c is of no use?

[Li Yechen]

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my xen version is 4.2.1
not matter how I modify the function : libxl_set_memory_target
in libxl.c, ie: add return 0, or assert ...
the xl command behaves the same.


an example is:
run a guest domain, and use command: xl mem-set GUESTID 33333333
then it will output an error as: libxl: error:
libxl.c:3455:libxl_set_memory_target: memory_dynamic_max must be less than
or equal to memory_static_max

this error message is in tools/libxl/libxl.c, near LINE 3428, in the if
(new_target_memkb > memorykb){LIBXL__LOG.}

change the message to any characters, recompile and install xen, reboot
xl mem-set GUESTID 33333333, the original message come out again!

I have been trapped in this for ten hours. Has anyone ever modified the
libxl.c successfully?



-- 
Yechen Li

Team of System Virtualization and Cloud Computing
School of Electronic Engineering  and Computer Science,
Peking University, China

Nothing is impossible because impossible itself  says: " I'm possible "
lccycc From PKU

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Re: [ help! ] tools/libxl/libxl.c is of no use?

[Wei Liu]

On Mon, Aug 05, 2013 at 08:15:37AM +0800, Li Yechen wrote:
> my xen version is 4.2.1
> not matter how I modify the function : libxl_set_memory_target
> in libxl.c, ie: add return 0, or assert ...
> the xl command behaves the same.
> 
> 
> an example is:
> run a guest domain, and use command: xl mem-set GUESTID 33333333
> then it will output an error as: libxl: error:
> libxl.c:3455:libxl_set_memory_target: memory_dynamic_max must be less than
> or equal to memory_static_max
> 
> this error message is in tools/libxl/libxl.c, near LINE 3428, in the if
> (new_target_memkb > memorykb){LIBXL__LOG.}
> 
> change the message to any characters, recompile and install xen, reboot

What do you mean by "install xen"?

You need to reinstall the tools, not the hypervisor. You can try running
"make install" in libxl directory.


Wei.

> xl mem-set GUESTID 33333333, the original message come out again!
> 
> I have been trapped in this for ten hours. Has anyone ever modified the
> libxl.c successfully?
> 
> 
> 
> -- 
> Yechen Li
> 
> Team of System Virtualization and Cloud Computing
> School of Electronic Engineering  and Computer Science,
> Peking University, China
> 
> Nothing is impossible because impossible itself  says: " I'm possible "
> lccycc From PKU

> _______________________________________________
> Xen-devel mailing list
> Xen-devel@lists.xen.org
> http://lists.xen.org/xen-devel

Re: [ help! ] tools/libxl/libxl.c is of no use?

[Andrew Cooper]

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On 05/08/13 01:15, Li Yechen wrote:
> my xen version is 4.2.1
> not matter how I modify the function : libxl_set_memory_target 
> in libxl.c, ie: add return 0, or assert ...
> the xl command behaves the same.
>
>
> an example is:
> run a guest domain, and use command: xl mem-set GUESTID 33333333
> then it will output an error as: libxl: error:
> libxl.c:3455:libxl_set_memory_target: memory_dynamic_max must be less
> than or equal to memory_static_max
>
> this error message is in tools/libxl/libxl.c, near LINE 3428, in the
> if (new_target_memkb > memorykb){LIBXL__LOG.}
>
> change the message to any characters, recompile and install xen, reboot
> xl mem-set GUESTID 33333333, the original message come out again!
>
> I have been trapped in this for ten hours. Has anyone ever modified
> the libxl.c successfully?
>

libxl.c forms part of libxenlight.so.$VERSION, so unless you are
reinstalling your librarys rather than just reinstalling `xl`, you
really wont see any difference.

~Andrew

>
>
> -- 
> Yechen Li
>
> Team of System Virtualization and Cloud Computing 
> School of Electronic Engineering  and Computer Science, 
> Peking University, China
>
> Nothing is impossible because impossible itself  says: " I'm possible "
> lccycc From PKU
>
>
> _______________________________________________
> Xen-devel mailing list
> Xen-devel@lists.xen.org
> http://lists.xen.org/xen-devel


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