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*SOLVED* Make Kernel Module ztdummy available in VE [message #16155]

Fri, 24 August 2007 12:55

schogge
Messages: 19
Registered: July 2007

Junior Member

Hi,

I have installed and loaded the kernel module ztdummy (include in zaptel) on HN and want to give VE access to it.

My system:
Host: CentOS 5
Kernel: 2.6.18-8.1.4.el5.028stab035.1
Guest: CentOS 4
zaptel: zaptel-1.2.20.1

The test utility zttest shows this on HN:

# zttest 
Opened pseudo zap interface, measuring accuracy...
99.975586% 99.926758% 99.975586% 99.975586% 99.926758%

I also gave VE access to /dev/zap by running

for x in `ls /dev/zap`; do /usr/sbin/vzctl set 200 --devnodes zap/${x}:rw --save; done

ls /dev/zap inside VE shows

ls /dev/zap/
channel  ctl  pseudo  timer  transcode

However asterisk is compiling without its conferencing tool MeetMe, which means ztdummy is missing on the system.

Is their a way to check if ztdummy works correctly in VE?

Any idea to get it running?

Thanks,
schogge

[Updated on: Fri, 21 December 2007 07:25] by Moderator

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Re: Make Kernel Module ztdummy available in VE [message #21296 is a reply to message #16155]

Thu, 04 October 2007 15:01

Alexandr Andreev
Messages: 35
Registered: October 2006

Member

1. Had you solve the problem?

Quote:

However asterisk is compiling without its conferencing tool MeetMe, which means ztdummy is missing on the system.

2. Probably you compiled zaptel in VE0, installed kernel modules, gave access to /dev/zap to VE's, and then entered VE, and tried to compile asteriks.

If so, you should also build and install zaptel inside VE, because asterisk requires zaptel headers and libraries to enable MeetMe support.

3. To check whether ztdummy loaded successful, run in your VE

# ztcfg -v
# ztcfg -d
# cat /proc/zaptel/1

Here is all asterisk features, depending on ZAPTEL:

# grep ZAPTEL menuselect.makedeps
MENUSELECT_DEPENDS_app_flash=ZAPTEL
MENUSELECT_DEPENDS_app_meetme=ZAPTEL
MENUSELECT_DEPENDS_app_page=ZAPTEL APP_MEETME
MENUSELECT_DEPENDS_app_rpt=ZAPTEL TONEZONE
MENUSELECT_DEPENDS_app_zapbarge=ZAPTEL
MENUSELECT_DEPENDS_app_zapras=ZAPTEL
MENUSELECT_DEPENDS_app_zapscan=ZAPTEL
MENUSELECT_DEPENDS_chan_iax2=ZAPTEL
MENUSELECT_DEPENDS_chan_zap=RES_SMDI ZAPTEL_VLDTMF ZAPTEL TONEZONE PRI
MENUSELECT_DEPENDS_codec_zap=ZAPTEL_TRANSCODE ZAPTEL
MENUSELECT_DEPENDS_res_musiconhold=ZAPTEL

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Re: Make Kernel Module ztdummy available in VE [message #23388 is a reply to message #16155]

Fri, 16 November 2007 10:20

Emiliano
Messages: 4
Registered: November 2007

Junior Member

Sorry guys to reopen this topic but I had the same problem.

Compiling zaptel on HN and VE was a success, but issuing modprobe on VE yields:

idra / # modprobe -v ztdummy
insmod /lib/modules/2.6.18-028stab027/misc/zaptel.ko
WARNING: Error inserting zaptel (/lib/modules/2.6.18-028stab027/misc/zaptel.ko): Operation not permitted
insmod /lib/modules/2.6.18-028stab027/misc/ztdummy.ko
FATAL: Error inserting ztdummy (/lib/modules/2.6.18-028stab027/misc/ztdummy.ko): Operation not permitted

The VE is a Gentoo system with kernel version 2.6.18-028stab027.

Any help is appreciable! Very Happy

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Re: Make Kernel Module ztdummy available in VE [message #23400 is a reply to message #23388]

Fri, 16 November 2007 10:48

khorenko
Messages: 533
Registered: January 2006
Location: Moscow, Russia

Senior Member

Well, loading modules from inside VE is prohibited, you have to load modules from HN (Hardware Node).

If your problem is solved - please, report it!
It's even more important than reporting the problem itself...

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Re: Make Kernel Module ztdummy available in VE [message #23413 is a reply to message #16155]

Fri, 16 November 2007 13:18

Emiliano
Messages: 4
Registered: November 2007

Junior Member

Thanks for your reply.

Is it considered a bug or a known limitation of the OpenVZ architecture?

Tha is: is there anyone going to correct this? Razz

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Re: Make Kernel Module ztdummy available in VE [message #23416 is a reply to message #23413]

Fri, 16 November 2007 13:47

khorenko
Messages: 533
Registered: January 2006
Location: Moscow, Russia

Senior Member

Emiliano wrote on Fri, 16 November 2007 16:18

Is it considered a bug or a known limitation of the OpenVZ architecture?

This is both limitation and the power of the OpenVZ. As all the VEs use the same kernel (OS level virtualization http://wiki.openvz.org/Introduction_to_virtualization), just imagine how simple is to write a bad kernel module, load it in any VE and crash the whole Node (Hardware Node)?
So this "limitation" defends VEs from each other.

So, this is not a bug, but the feature. Smile

If your problem is solved - please, report it!
It's even more important than reporting the problem itself...

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Re: Make Kernel Module ztdummy available in VE [message #25133 is a reply to message #23416]

Sat, 15 December 2007 04:37

anishb
Messages: 1
Registered: December 2007

Junior Member

Hi,

I am trying to compile zaptel inside a centos-4-minimal virtual environment so that Asterisk will compile with app_meetme. I am getting the following error:

[root@pbx zaptel-1.2.22.1]# make

make -C /usr/src/linux SUBDIRS=/usr/local/src/zaptel-1.2.22.1 HOTPLUG_FIRMWARE=yes modules
make[1]: Entering directory `/usr/src/kernels/2.6.18-53.el5.028stab051.1-i686'
CC [M] /usr/local/src/zaptel-1.2.22.1/zaptel-base.o
/usr/local/src/zaptel-1.2.22.1/zaptel-base.c:188: warning: 'fcstab' defined but not used
/bin/sh: line 1: 5234 Done(2) gcc -m32 -E -D__GENKSYMS__ -Wp,-MD,/usr/local/src/zaptel-1.2.22.1/.zaptel-base.o.d -nostdinc -isystem /usr/lib/gcc/i386-redhat-linux/3.4.6/include -D__KERNEL__ -Iinclude -include include/linux/autoconf.h -Wall -Wundef -Wstrict-prototypes -Wno-trigraphs -fno-strict-aliasing -fno-common -Wstrict-prototypes -Wundef -Werror-implicit-function-declaration -Os -pipe -msoft-float -fno-builtin-sprintf -fno-builtin-log2 -fno-builtin-puts -mpreferred-stack-boundary=2 -fno-unit-at-a-time -march=i686 -mregparm=3 -ffreestanding -Iinclude/asm-i386/mach-generic -Iinclude/asm-i386/mach-default -fomit-frame-pointer -Wdeclaration-after-statement -DSTANDALONE_ZAPATA -DBUILDING_TONEZONE -DHOTPLUG_FIRMWARE -I/usr/local/src/zaptel-1.2.22.1 -DMODULE -D"KBUILD_STR(s)=#s" -D"KBUILD_BASENAME=KBUILD_STR(zaptel_base)" -D"KBUILD_MODNAME=KBUILD_STR(zaptel)" /usr/local/src/zaptel-1.2.22.1/zaptel-base.c
5236 Floating point exception| scripts/genksyms/genksyms -a i386 >/usr/local/src/zaptel-1.2.22.1/.tmp_zaptel-base.ver
make[2]: *** [/usr/local/src/zaptel-1.2.22.1/zaptel-base.o] Error 136
make[1]: *** [_module_/usr/local/src/zaptel-1.2.22.1] Error 2
make[1]: Leaving directory `/usr/src/kernels/2.6.18-53.el5.028stab051.1-i686'
make: *** [modules] Error 2

Anyone have any idea what the problem could be?

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Re: Make Kernel Module ztdummy available in VE [message #25200 is a reply to message #25133]

Mon, 17 December 2007 14:34

khorenko
Messages: 533
Registered: January 2006
Location: Moscow, Russia

Senior Member

Hi.

i think this wiki will answer your question:
http://wiki.openvz.org/Building_LKM_against_OpenVZ_kernel_fr om_RPM

--
Konstantin.

If your problem is solved - please, report it!
It's even more important than reporting the problem itself...

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Re: Make Kernel Module ztdummy available in VE [message #26586 is a reply to message #23388]

Tue, 29 January 2008 07:59

ricoche
Messages: 17
Registered: January 2008
Location: Nagano Japan

Junior Member

Emiliano wrote on Fri, 16 November 2007 05:20

Compiling zaptel on HN and VE was a success,

I understand and successfully compiled Zaptel on the HN, but how does one do the same for VE when you cannot access the Kernel Source required to compile. Or can you?

Thanks,

Jim

[Updated on: Tue, 29 January 2008 07:59]

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Re: Make Kernel Module ztdummy available in VE [message #26587 is a reply to message #21296]

Tue, 29 January 2008 08:13

ricoche
Messages: 17
Registered: January 2008
Location: Nagano Japan

Junior Member

Alexandr Andreev wrote on Thu, 04 October 2007 11:01

This is exactly what I did, but I am not sure how to install zaptel inside VE because it requires access to the Kernel souce which I can't seem to install using "yum install ovzkernel-devel". I did this on the HN and it worked, but what to do with regards to the VE I am unsure.

Thanks,

Jim

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