Re: problems with lttng-0.5.1/ltt-control-0.5/linux-2.6.14.1

Hi Mathieu,

This is an old version, I think it was using Relayfs instead of debugfs. 
Regarding: 
> Reading from relayfs directory : /media/debugfs/
Could Relayfs cause the problem? 

Parissa. 

> Hi Martin,
>
> * Martin Robb ([email protected]) wrote:
> > I am trying to use lttng with a Linux 2.6.14 kernel. I applied
> > patch-2.6.14-lttng-0.5.1. I compiled ltt-control-0.5-06042006. However,
> > I'm getting some run time errors. I've not used lttng before, so I'm
> > probably just misunderstanding something. Any help on this would be most
> > welcome.
> >
> > When I run the command:
> >
> > sudo lttctl -n trace -d -l /media/debugfs/ltt -t /tmp/trace
>
> This command looks ok
>
> > I get the error:
> >
> > Linux Trace Toolkit Trace Control
> > Controlling trace : trace
> > Create Trace Error: Failed to send netlink message: Connection refused
>
> It normally happen if the ltt-control.ko is not loaded/not builtin. It
> is the netlink based control module.
>
> > Thinking that it may need some sort of daemon, and noticing an lttd
> > command, I then tried:
> >
> > sudo lttd -t /tmp/trace -c /media/debugfs/
>
> This one should read "-c /media/debugfs/ltt", so you would not try files
> outside of LTTng's realm.
>
> Please check if your ltt-control module is loaded appropriately and if
> the ltt-control (userspace package) and lttng version match (see the
> compatibility list on http://ltt.polymtl.ca). Since you are using an old
> LTTng version, you might want to get a newer one and backport it, since
> a _lot_ of things happened since then.
>
> Regards,
>
> Mathieu
>
> > Linux Trace Toolkit Trace Daemon
> >
> > Reading from relayfs directory : /media/debugfs/
> >
> > Writing to trace directory : /tmp/trace
> >
> > Creating trace subdirectory /tmp/trace
> >
> > Channel file : /media/debugfs//uhci
> >
> > Entering channel subdirectory...
> >
> > Creating trace subdirectory /tmp/trace/uhci
> >
> > Channel file : /media/debugfs//uhci/0000:00:1d.1
> >
> > Opening file.
> >
> > Channel file : /media/debugfs//uhci/0000:00:1d.0
> >
> > Opening file.
> >
> > Channel file : /media/debugfs//usbmon
> >
> > Entering channel subdirectory...
> >
> > Creating trace subdirectory /tmp/trace/usbmon
> >
> > Channel file : /media/debugfs//usbmon/3s
> >
> > Opening file.
> >
> > Channel file : /media/debugfs//usbmon/3t
> >
> > Opening file.
> >
> > Channel file : /media/debugfs//usbmon/2s
> >
> > Opening file.
> >
> > Channel file : /media/debugfs//usbmon/2t
> >
> > Opening file.
> >
> > Channel file : /media/debugfs//usbmon/1s
> >
> > Opening file.
> >
> > Channel file : /media/debugfs//usbmon/1t
> >
> > Opening file.
> >
> > Error in getting the number of subbuffers: Inappropriate ioctl for device
> >
> > I presume the ioctl error is the key. Here is the relevant configuration
> > from my kernel .config file:
> >
> > #
> >
> > # Instrumentation Support
> >
> > #
> >
> > CONFIG_LTT=y
> >
> > CONFIG_LTT_TRACER=y
> >
> > CONFIG_LTT_ALIGNMENT=y
> >
> > CONFIG_LTT_HEARTBEAT=y
> >
> > CONFIG_LTT_FACILITY_CORE=y
> >
> > CONFIG_LTT_FACILITY_FS=y
> >
> > CONFIG_LTT_FACILITY_IPC=y
> >
> > CONFIG_LTT_FACILITY_KERNEL=y
> >
> > CONFIG_LTT_FACILITY_KERNEL_ARCH=y
> >
> > CONFIG_LTT_FACILITY_MEMORY=y
> >
> > CONFIG_LTT_FACILITY_NETWORK=y
> >
> > CONFIG_LTT_FACILITY_PROCESS=y
> >
> > CONFIG_LTT_FACILITY_SOCKET=y
> >
> > CONFIG_LTT_FACILITY_STATEDUMP=y
> >
> > CONFIG_LTT_FACILITY_TIMER=y
> >
> > ...
> >
> > #
> >
> > # Kernel hacking
> >
> > #
> >
> > # CONFIG_PRINTK_TIME is not set
> >
> > CONFIG_DEBUG_KERNEL=y
> >
> > CONFIG_MAGIC_SYSRQ=y
> >
> > CONFIG_LOG_BUF_SHIFT=17
> >
> > CONFIG_DETECT_SOFTLOCKUP=y
> >
> > # CONFIG_SCHEDSTATS is not set
> >
> > # CONFIG_DEBUG_SLAB is not set
> >
> > CONFIG_DEBUG_SPINLOCK=y
> >
> > CONFIG_DEBUG_SPINLOCK_SLEEP=y
> >
> > # CONFIG_DEBUG_KOBJECT is not set
> >
> > CONFIG_DEBUG_HIGHMEM=y
> >
> > CONFIG_DEBUG_BUGVERBOSE=y
> >
> > CONFIG_DEBUG_INFO=y
> >
> > CONFIG_DEBUG_FS=y
> >
> > # CONFIG_FRAME_POINTER is not set
> >
> > CONFIG_EARLY_PRINTK=y
> >
> > CONFIG_DEBUG_STACKOVERFLOW=y
> >
> > CONFIG_KPROBES=y
> >
> > CONFIG_DEBUG_STACK_USAGE=y
> >
> > # CONFIG_DEBUG_PAGEALLOC is not set
> >
> > CONFIG_4KSTACKS=y
> >
> > CONFIG_X86_FIND_SMP_CONFIG=y
> >
> > CONFIG_X86_MPPARSE=y
> >
> >
> > Thanks,
> > Martin Robb
> >
> >
> >
> > _______________________________________________
> > Ltt-dev mailing list
> > [email protected]
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