[Xen-devel] XenTrace
Hello All, I am not able to run Xentrace. I am using FreeBSD as Dom0. I have given size and event in command line parameters during boot also. Please help me !!! Thankyou in Advance ___ Xen-devel mailing list Xen-devel@lists.xen.org http://lists.xen.org/xen-devel
Re: [Xen-devel] Log Messages ....
And it is from the Dom0 the logs of both DomUs and hypervisor are recorded ryt? Correct me if I am wrong. My Dom0 is FreeBSD11 On 3 December 2015 at 11:17, kumara rathnavel wrote: > Hello George, > > Is there any way to enable xentrace..I am not able to get any > logs...I am using xentrace_format to view the output .. > > Thankyou, > Kumar > > On 3 December 2015 at 10:22, kumara rathnavel > wrote: > >> Thanks a lot George!!!Hope XENTRACE will help me!!! >> >> On 2 December 2015 at 22:25, George Dunlap >> wrote: >> >>> On 02/12/15 16:48, kumara rathnavel wrote: >>> > Hello George, >>> > >>> > Thanks a lot. One more question if I connect serial port will I be >>> able to >>> > see what is happening in xenwithout using xen trace >>> >>> Please don't top-post. :-) >>> >>> If you set up a serial console you'll be able to get the same output as >>> "xl dmesg". >>> >>> Here's a guide for serial consoles in Xen in case you need it: >>> >>> http://wiki.xenproject.org/wiki/Xen_Serial_Console >>> >>> -George >>> >>> > On 2 Dec 2015 19:34, "George Dunlap" >>> wrote: >>> > >>> >> On Wed, Dec 2, 2015 at 1:49 PM, kumara rathnavel < >>> kumara@gmail.com> >>> >> wrote: >>> >>> Hello All, >>> >>> >>> >>> I require logs of the Hypercalls made from Guest to the Hypervisor >>> after >>> >> the >>> >>> boot, as xl dmesg provides me with the log messages during the >>> >>> initialisation. >>> >> >>> >> One thing you could look at is xentrace and xenalyze. You can find a >>> >> brief introduction here: >>> >> >>> >> >>> https://blog.xenproject.org/2012/09/27/tracing-with-xentrace-and-xenalyze/ >>> >> >>> >> You can enable Xen tracing on the Xen command-line using the >>> >> "tbuf_size" and "tevt_mask" parameters described here: >>> >> >>> >> >>> http://xenbits.xenproject.org/docs/unstable/misc/xen-command-line.html >>> >> >>> >> -George >>> >> >>> > >>> >>> >> > ___ Xen-devel mailing list Xen-devel@lists.xen.org http://lists.xen.org/xen-devel
Re: [Xen-devel] Log Messages ....
Hello George, Is there any way to enable xentrace..I am not able to get any logs...I am using xentrace_format to view the output .. Thankyou, Kumar On 3 December 2015 at 10:22, kumara rathnavel wrote: > Thanks a lot George!!!Hope XENTRACE will help me!!! > > On 2 December 2015 at 22:25, George Dunlap > wrote: > >> On 02/12/15 16:48, kumara rathnavel wrote: >> > Hello George, >> > >> > Thanks a lot. One more question if I connect serial port will I be >> able to >> > see what is happening in xenwithout using xen trace >> >> Please don't top-post. :-) >> >> If you set up a serial console you'll be able to get the same output as >> "xl dmesg". >> >> Here's a guide for serial consoles in Xen in case you need it: >> >> http://wiki.xenproject.org/wiki/Xen_Serial_Console >> >> -George >> >> > On 2 Dec 2015 19:34, "George Dunlap" >> wrote: >> > >> >> On Wed, Dec 2, 2015 at 1:49 PM, kumara rathnavel > > >> >> wrote: >> >>> Hello All, >> >>> >> >>> I require logs of the Hypercalls made from Guest to the Hypervisor >> after >> >> the >> >>> boot, as xl dmesg provides me with the log messages during the >> >>> initialisation. >> >> >> >> One thing you could look at is xentrace and xenalyze. You can find a >> >> brief introduction here: >> >> >> >> >> https://blog.xenproject.org/2012/09/27/tracing-with-xentrace-and-xenalyze/ >> >> >> >> You can enable Xen tracing on the Xen command-line using the >> >> "tbuf_size" and "tevt_mask" parameters described here: >> >> >> >> http://xenbits.xenproject.org/docs/unstable/misc/xen-command-line.html >> >> >> >> -George >> >> >> > >> >> > ___ Xen-devel mailing list Xen-devel@lists.xen.org http://lists.xen.org/xen-devel
Re: [Xen-devel] Log Messages ....
Thanks a lot George!!!Hope XENTRACE will help me!!! On 2 December 2015 at 22:25, George Dunlap wrote: > On 02/12/15 16:48, kumara rathnavel wrote: > > Hello George, > > > > Thanks a lot. One more question if I connect serial port will I be able > to > > see what is happening in xenwithout using xen trace > > Please don't top-post. :-) > > If you set up a serial console you'll be able to get the same output as > "xl dmesg". > > Here's a guide for serial consoles in Xen in case you need it: > > http://wiki.xenproject.org/wiki/Xen_Serial_Console > > -George > > > On 2 Dec 2015 19:34, "George Dunlap" > wrote: > > > >> On Wed, Dec 2, 2015 at 1:49 PM, kumara rathnavel > >> wrote: > >>> Hello All, > >>> > >>> I require logs of the Hypercalls made from Guest to the Hypervisor > after > >> the > >>> boot, as xl dmesg provides me with the log messages during the > >>> initialisation. > >> > >> One thing you could look at is xentrace and xenalyze. You can find a > >> brief introduction here: > >> > >> > https://blog.xenproject.org/2012/09/27/tracing-with-xentrace-and-xenalyze/ > >> > >> You can enable Xen tracing on the Xen command-line using the > >> "tbuf_size" and "tevt_mask" parameters described here: > >> > >> http://xenbits.xenproject.org/docs/unstable/misc/xen-command-line.html > >> > >> -George > >> > > > > ___ Xen-devel mailing list Xen-devel@lists.xen.org http://lists.xen.org/xen-devel
Re: [Xen-devel] Log Messages ....
Hello George, Thanks a lot. One more question if I connect serial port will I be able to see what is happening in xenwithout using xen trace On 2 Dec 2015 19:34, "George Dunlap" wrote: > On Wed, Dec 2, 2015 at 1:49 PM, kumara rathnavel > wrote: > > Hello All, > > > > I require logs of the Hypercalls made from Guest to the Hypervisor after > the > > boot, as xl dmesg provides me with the log messages during the > > initialisation. > > One thing you could look at is xentrace and xenalyze. You can find a > brief introduction here: > > https://blog.xenproject.org/2012/09/27/tracing-with-xentrace-and-xenalyze/ > > You can enable Xen tracing on the Xen command-line using the > "tbuf_size" and "tevt_mask" parameters described here: > > http://xenbits.xenproject.org/docs/unstable/misc/xen-command-line.html > > -George > ___ Xen-devel mailing list Xen-devel@lists.xen.org http://lists.xen.org/xen-devel
[Xen-devel] Log Messages ....
Hello All, I require logs of the Hypercalls made from Guest to the Hypervisor after the boot, as xl dmesg provides me with the log messages during the initialisation. This would be a very great help! Thanks in advance !! Thanking you, Kumar ___ Xen-devel mailing list Xen-devel@lists.xen.org http://lists.xen.org/xen-devel
Re: [Xen-devel] Fwd: Fwd: LibXL
Hello Ian, As requested I have attached the gdb output of the code. On 22 September 2015 at 15:21, Ian Campbell wrote: > On Tue, 2015-09-22 at 14:50 +0530, kumara rathnavel wrote: > > > > I have attached my code. I have also attached the system call traces > file > > > which was generated by the command truss for the command that was > > > successful through XL and the other one that failed where I used the > call > > > directly. > > I'm afraid that truss is of very little use for debugging these sorts of > issues. > > What you need is to run the program under a debugger (such as gdb) and to > get a stack trace from the point of the segfault. > > Ian. > > > [root@snw-xen ~/test]# gdb exec exec.core GNU gdb 6.1.1 [FreeBSD] Copyright 2004 Free Software Foundation, Inc. GDB is free software, covered by the GNU General Public License, and you are welcome to change it and/or distribute copies of it under certain conditions. Type "show copying" to see the conditions. There is absolutely no warranty for GDB. Type "show warranty" for details. This GDB was configured as "amd64-marcel-freebsd"... Core was generated by `exec'. Program terminated with signal 11, Segmentation fault. Reading symbols from /usr/local/lib/libxenlight.so.4.5...Error while reading shared library symbols: Dwarf Error: wrong version in compilation unit header (is 4, should be 2) [in module /usr/local/lib/libxenlight.so.4.5] Reading symbols from /usr/local/lib/libxlutil.so.4.3...Error while reading shared library symbols: Dwarf Error: wrong version in compilation unit header (is 4, should be 2) [in module /usr/local/lib/libxlutil.so.4.3] Reading symbols from /lib/libc.so.7...done. Loaded symbols for /lib/libc.so.7 Reading symbols from /usr/local/lib/libxenctrl.so.4.5...Error while reading shared library symbols: Dwarf Error: wrong version in compilation unit header (is 4, should be 2) [in module /usr/local/lib/libxenctrl.so.4.5] Reading symbols from /usr/local/lib/libxenguest.so.4.5...Error while reading shared library symbols: Dwarf Error: wrong version in compilation unit header (is 4, should be 2) [in module /usr/local/lib/libxenguest.so.4.5] Reading symbols from /usr/local/lib/libxenstore.so.3.0...Error while reading shared library symbols: Dwarf Error: wrong version in compilation unit header (is 4, should be 2) [in module /usr/local/lib/libxenstore.so.3.0] Reading symbols from /lib/libutil.so.9...done. Loaded symbols for /lib/libutil.so.9 Reading symbols from /usr/local/lib/libyajl.so.2...done. Loaded symbols for /usr/local/lib/libyajl.so.2 Reading symbols from /lib/libthr.so.3...done. Loaded symbols for /lib/libthr.so.3 Reading symbols from /usr/lib/libbz2.so.4...done. Loaded symbols for /usr/lib/libbz2.so.4 Reading symbols from /usr/lib/liblzma.so.5...done. Loaded symbols for /usr/lib/liblzma.so.5 Reading symbols from /usr/local/lib/liblzo2.so.2...done. Loaded symbols for /usr/local/lib/liblzo2.so.2 Reading symbols from /lib/libz.so.6...done. Loaded symbols for /lib/libz.so.6 Reading symbols from /libexec/ld-elf.so.1...done. Loaded symbols for /libexec/ld-elf.so.1 #0 0x000801060679 in ?? () from /usr/local/lib/libxenctrl.so.4.5 [New Thread 802c06400 (LWP 100075/)] (gdb) bt #0 0x000801060679 in ?? () from /usr/local/lib/libxenctrl.so.4.5 #1 0x0008008816cf in ?? () from /usr/local/lib/libxenlight.so.4.5 #2 0x0001 in ?? () #3 0x0008008816cf in ?? () from /usr/local/lib/libxenlight.so.4.5 #4 0x00080087e03e in ?? () from /usr/local/lib/libxenlight.so.4.5 #5 0x000800880c90 in ?? () from /usr/local/lib/libxenlight.so.4.5 #6 0x in ?? () (gdb) run Starting program: /root/test/exec Error while reading shared library symbols: Dwarf Error: wrong version in compilation unit header (is 4, should be 2) [in module /usr/local/lib/libxenlight.so.4.5] Error while reading shared library symbols: Dwarf Error: wrong version in compilation unit header (is 4, should be 2) [in module /usr/local/lib/libxlutil.so.4.3] Error while reading shared library symbols: Dwarf Error: wrong version in compilation unit header (is 4, should be 2) [in module /usr/local/lib/libxenctrl.so.4.5] Error while reading shared library symbols: Dwarf Error: wrong version in compilation unit header (is 4, should be 2) [in module /usr/local/lib/libxenguest.so.4.5] Error while reading shared library symbols: Dwarf Error: wrong version in compilation unit header (is 4, should be 2) [in module /usr/local/lib/libxenstore.so.3.0] Program received signal SIGSEGV, Segmentation fault. 0x000801060679 in ?? () from /usr/local/lib/libxenctrl.so.4.5 (gdb) ___ Xen-devel mailing list Xen-devel@lists.xen.org http://lists.xen.org/xen-devel
[Xen-devel] Fwd: Fwd: LibXL
>
>
> Hello All,
>
> I am not able to use the library functions provided by the LibXenlight
> though I am able to use it through XL. I am in need to develop my own CLI
> . I am able to perform few basic operations like listing the VM, reboot
> and all. But the calls that require a structure to be filled is not
> functioning . I am getting a segmentation fault.
>
> I have attached my code. I have also attached the system call traces file
> which was generated by the command truss for the command that was
> successful through XL and the other one that failed where I used the call
> directly.
>
> Thank you
>
#include
#include
#include
#include
#include
#include
#include
#include
#define INVALID_DOMID 0
#define LIBXL__DEFBOOL_FALSE (-1)
#define LIBXL__DEFBOOL_TRUE (1)
int
main(
int argc,
char **argv
)
{
libxl_ctx *ctx;
int rc = 0;
libxl_device_nic nic;
int domid = 0;
char *bridge = NULL;
bridge = "bridge0";
libxl_device_nic_init(&nic);
domid = 2; //Have a domain running with ID 2.
rc = libxl_ctx_alloc(&ctx, LIBXL_VERSION, 0, NULL);
if (rc < 0) {
perror("ctx alloc failed.");
return rc;
}
nic.devid = -1;
nic.bridge = bridge;
nic.nictype = LIBXL_NIC_TYPE_VIF;
rc = libxl_device_nic_add(ctx, domid, &nic, 0);
if(rc != 0 ) {
printf("Attach Failed\n");
}
libxl_ctx_free(ctx);
return rc;
}
xlout
Description: Binary data
eout
Description: Binary data
___
Xen-devel mailing list
Xen-devel@lists.xen.org
http://lists.xen.org/xen-devel
[Xen-devel] libxen-light
Hello, I do not find any proper documentation regarding API provided by the Libxenlight. All I find is the documentation for the xl that in turn uses Libxl Library. But I would like to use the library calls directly, I am able to basic operations like listing vm, reboot and all those . But when it comes to creation of domain or attaching device , I am filling the structures the same way as xl is doing. But I get a Seg Fault. Can you share some documentation on the Libxenlight API if possible or guidance would do,,. Thank you, Kumar,... ___ Xen-devel mailing list Xen-devel@lists.xen.org http://lists.xen.org/xen-devel
