[ltt-dev] LTT Userspace problems

[ltt-dev] LTT Userspace problems

[Naren]

Hi,

I've been facing problems with userspace tracing. During the execution of
the sample file, i am getting the error as specified in the link.

http://pastebin.ca/1765208

Linux: Ubuntu 9.1

Kernel Version: 2.6.30

Lttng Version: 0.159

UST version: 0.1

Lttv version : 0.12.20

For the sample test c code , click this link http://pastebin.ca/1765210

Regards
Naren
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[ltt-dev] LTT Userspace problems

[Naren]

Hi,

I've been facing problems with userspace tracing. During the execution of
the sample file, i am getting the error as specified in the link.

http://pastebin.ca/1765208

Linux: Ubuntu 9.1

Kernel Version: 2.6.30

Lttng Version: 0.159

UST version: 0.1

Lttv version : 0.12.20

For the sample test c code , click this link http://pastebin.ca/1765210

Regards
Naren
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[ltt-dev] LTT Userspace problems

[Naren]

Hi,

I've been facing problems with userspace tracing. During the execution of
the sample file, i am getting the error as specified in the link.

http://pastebin.ca/1765208

Linux: Ubuntu 9.1

Kernel Version: 2.6.30

Lttng Version: 0.159

UST version: 0.1

Lttv version : 0.12.20

For the sample test c code , click this link http://pastebin.ca/1765210

Regards
Naren
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[ltt-dev] LTT Userspace problems

[Mathieu Desnoyers]

I'm forwarding this to Pierre-Marc.

Thanks for the report,

Mathieu

* Naren (tracemein at gmail.com) wrote:
> Hi,
> 
> I've been facing problems with userspace tracing. During the execution of
> the sample file, i am getting the error as specified in the link.
> 
> http://pastebin.ca/1765208
> 
> Linux: Ubuntu 9.1
> 
> Kernel Version: 2.6.30
> 
> Lttng Version: 0.159
> 
> UST version: 0.1
> 
> Lttv version : 0.12.20
> 
> For the sample test c code , click this link http://pastebin.ca/1765210
> 
> Regards
> Naren

> _______________________________________________
> ltt-dev mailing list
> ltt-dev at lists.casi.polymtl.ca
> http://lists.casi.polymtl.ca/cgi-bin/mailman/listinfo/ltt-dev


-- 
Mathieu Desnoyers
OpenPGP key fingerprint: 8CD5 52C3 8E3C 4140 715F  BA06 3F25 A8FE 3BAE 9A68

[ltt-dev] LTT Userspace problems

[Pierre-Marc Fournier]

As the message says:
Error initializing named socket (/tmp/socks/12293). Check that directory
exists and that it is writable.

Are you sure /tmp/socks exists and that it is writable?

pmf

Mathieu Desnoyers wrote:
> I'm forwarding this to Pierre-Marc.
> 
> Thanks for the report,
> 
> Mathieu
> 
> * Naren (tracemein at gmail.com) wrote:
>> Hi,
>>
>> I've been facing problems with userspace tracing. During the execution of
>> the sample file, i am getting the error as specified in the link.
>>
>> http://pastebin.ca/1765208
>>
>> Linux: Ubuntu 9.1
>>
>> Kernel Version: 2.6.30
>>
>> Lttng Version: 0.159
>>
>> UST version: 0.1
>>
>> Lttv version : 0.12.20
>>
>> For the sample test c code , click this link http://pastebin.ca/1765210
>>
>> Regards
>> Naren
> 
>> _______________________________________________
>> ltt-dev mailing list
>> ltt-dev at lists.casi.polymtl.ca
>> http://lists.casi.polymtl.ca/cgi-bin/mailman/listinfo/ltt-dev
> 
> 

[ltt-dev] LTT Userspace problems

[Naren]

Hi,

Yes, it worked after the creation of "socks" directory under "tmp".

1. I presume that tmp/socks will be automatically created by UST unlike the
manual creation done by me to make it   work.
2. Every time, the system restarts, the user created folders are deleted
hence the need to create the socks directory after every restart.

Can you clarify on the above mentioned points and whether it is by purpose
that tmp/socks directory needs to be created manually or is there something
wrong with the UST installation.

Regards,
Naren

On Wed, Jan 27, 2010 at 6:43 PM, Pierre-Marc Fournier <
pierre-marc.fournier at polymtl.ca> wrote:

> As the message says:
> Error initializing named socket (/tmp/socks/12293). Check that directory
> exists and that it is writable.
>
> Are you sure /tmp/socks exists and that it is writable?
>
> pmf
>
> Mathieu Desnoyers wrote:
> > I'm forwarding this to Pierre-Marc.
> >
> > Thanks for the report,
> >
> > Mathieu
> >
> > * Naren (tracemein at gmail.com) wrote:
> >> Hi,
> >>
> >> I've been facing problems with userspace tracing. During the execution
> of
> >> the sample file, i am getting the error as specified in the link.
> >>
> >> http://pastebin.ca/1765208
> >>
> >> Linux: Ubuntu 9.1
> >>
> >> Kernel Version: 2.6.30
> >>
> >> Lttng Version: 0.159
> >>
> >> UST version: 0.1
> >>
> >> Lttv version : 0.12.20
> >>
> >> For the sample test c code , click this link http://pastebin.ca/1765210
> >>
> >> Regards
> >> Naren
> >
> >> _______________________________________________
> >> ltt-dev mailing list
> >> ltt-dev at lists.casi.polymtl.ca
> >> http://lists.casi.polymtl.ca/cgi-bin/mailman/listinfo/ltt-dev
> >
> >
>
>
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[ltt-dev] LTT Userspace problems

[Naren]

Hi,

Yes, it worked after the creation of "socks" directory under "tmp".

1. I presume that tmp/socks will be automatically created by UST unlike the
manual creation done by me to make it   work.
2. Every time, the system restarts, the user created folders are deleted
hence the need to create the socks directory after every restart.

Can you clarify on the above mentioned points and whether it is by purpose
that tmp/socks directory needs to be created manually or is there something
wrong with the UST installation.

Regards,
Naren

On Wed, Jan 27, 2010 at 6:43 PM, Pierre-Marc Fournier <
pierre-marc.fournier at polymtl.ca> wrote:

> As the message says:
> Error initializing named socket (/tmp/socks/12293). Check that directory
> exists and that it is writable.
>
> Are you sure /tmp/socks exists and that it is writable?
>
> pmf
>
> Mathieu Desnoyers wrote:
> > I'm forwarding this to Pierre-Marc.
> >
> > Thanks for the report,
> >
> > Mathieu
> >
> > * Naren (tracemein at gmail.com) wrote:
> >> Hi,
> >>
> >> I've been facing problems with userspace tracing. During the execution
> of
> >> the sample file, i am getting the error as specified in the link.
> >>
> >> http://pastebin.ca/1765208
> >>
> >> Linux: Ubuntu 9.1
> >>
> >> Kernel Version: 2.6.30
> >>
> >> Lttng Version: 0.159
> >>
> >> UST version: 0.1
> >>
> >> Lttv version : 0.12.20
> >>
> >> For the sample test c code , click this link http://pastebin.ca/1765210
> >>
> >> Regards
> >> Naren
> >
> >> _______________________________________________
> >> ltt-dev mailing list
> >> ltt-dev at lists.casi.polymtl.ca
> >> http://lists.casi.polymtl.ca/cgi-bin/mailman/listinfo/ltt-dev
> >
> >
>
>
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[ltt-dev] LTT Userspace problems

[Naren]

Hi,

Yes, it worked after the creation of "socks" directory under "tmp".

1. I presume that tmp/socks will be automatically created by UST unlike the
manual creation done by me to make it   work.
2. Every time, the system restarts, the user created folders are deleted
hence the need to create the socks directory after every restart.

Can you clarify on the above mentioned points and whether it is by purpose
that tmp/socks directory needs to be created manually or is there something
wrong with the UST installation.

Regards,
Naren

On Wed, Jan 27, 2010 at 6:43 PM, Pierre-Marc Fournier <
pierre-marc.fournier at polymtl.ca> wrote:

> As the message says:
> Error initializing named socket (/tmp/socks/12293). Check that directory
> exists and that it is writable.
>
> Are you sure /tmp/socks exists and that it is writable?
>
> pmf
>
> Mathieu Desnoyers wrote:
> > I'm forwarding this to Pierre-Marc.
> >
> > Thanks for the report,
> >
> > Mathieu
> >
> > * Naren (tracemein at gmail.com) wrote:
> >> Hi,
> >>
> >> I've been facing problems with userspace tracing. During the execution
> of
> >> the sample file, i am getting the error as specified in the link.
> >>
> >> http://pastebin.ca/1765208
> >>
> >> Linux: Ubuntu 9.1
> >>
> >> Kernel Version: 2.6.30
> >>
> >> Lttng Version: 0.159
> >>
> >> UST version: 0.1
> >>
> >> Lttv version : 0.12.20
> >>
> >> For the sample test c code , click this link http://pastebin.ca/1765210
> >>
> >> Regards
> >> Naren
> >
> >> _______________________________________________
> >> ltt-dev mailing list
> >> ltt-dev at lists.casi.polymtl.ca
> >> http://lists.casi.polymtl.ca/cgi-bin/mailman/listinfo/ltt-dev
> >
> >
>
>
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[ltt-dev] LTT Userspace problems

[Douglas Santos]

Quoting Naren <tracemein at gmail.com>:
> 2. Every time, the system restarts, the user created folders are deleted
> hence the need to create the socks directory after every restart.

this is because your system cleans /tmp after each reboot.

[ltt-dev] LTT Userspace problems

[Naren]

Yes.. precisely..
my question is, whether we have to create that folder manually after restart
or will it be created automatically by UST?

On Wed, Jan 27, 2010 at 11:16 PM, Douglas Santos
<douglas.santos at polymtl.ca>wrote:

> Quoting Naren <tracemein at gmail.com>:
> > 2. Every time, the system restarts, the user created folders are deleted
> > hence the need to create the socks directory after every restart.
>
> this is because your system cleans /tmp after each reboot.
>
>
> _______________________________________________
> ltt-dev mailing list
> ltt-dev at lists.casi.polymtl.ca
> http://lists.casi.polymtl.ca/cgi-bin/mailman/listinfo/ltt-dev
>
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[ltt-dev] LTT Userspace problems

[Naren]

Yes.. precisely..
my question is, whether we have to create that folder manually after restart
or will it be created automatically by UST?

On Wed, Jan 27, 2010 at 11:16 PM, Douglas Santos
<douglas.santos at polymtl.ca>wrote:

> Quoting Naren <tracemein at gmail.com>:
> > 2. Every time, the system restarts, the user created folders are deleted
> > hence the need to create the socks directory after every restart.
>
> this is because your system cleans /tmp after each reboot.
>
>
> _______________________________________________
> ltt-dev mailing list
> ltt-dev at lists.casi.polymtl.ca
> http://lists.casi.polymtl.ca/cgi-bin/mailman/listinfo/ltt-dev
>
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[ltt-dev] LTT Userspace problems

[Naren]

Yes.. precisely..
my question is, whether we have to create that folder manually after restart
or will it be created automatically by UST?

On Wed, Jan 27, 2010 at 11:16 PM, Douglas Santos
<douglas.santos at polymtl.ca>wrote:

> Quoting Naren <tracemein at gmail.com>:
> > 2. Every time, the system restarts, the user created folders are deleted
> > hence the need to create the socks directory after every restart.
>
> this is because your system cleans /tmp after each reboot.
>
>
> _______________________________________________
> ltt-dev mailing list
> ltt-dev at lists.casi.polymtl.ca
> http://lists.casi.polymtl.ca/cgi-bin/mailman/listinfo/ltt-dev
>
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[ltt-dev] LTT Userspace problems

[Mathieu Desnoyers]

It should clearly be created automatically by UST.

Pierre-Marc, can you add this to your todo list ?

If other people find time to prepare a patch, I am sure it would be very
welcome.

Thanks,

Mathieu

* Naren (tracemein at gmail.com) wrote:
> Yes.. precisely..
> my question is, whether we have to create that folder manually after restart
> or will it be created automatically by UST?
> 
> On Wed, Jan 27, 2010 at 11:16 PM, Douglas Santos
> <douglas.santos at polymtl.ca>wrote:
> 
> > Quoting Naren <tracemein at gmail.com>:
> > > 2. Every time, the system restarts, the user created folders are deleted
> > > hence the need to create the socks directory after every restart.
> >
> > this is because your system cleans /tmp after each reboot.
> >
> >
> > _______________________________________________
> > ltt-dev mailing list
> > ltt-dev at lists.casi.polymtl.ca
> > http://lists.casi.polymtl.ca/cgi-bin/mailman/listinfo/ltt-dev
> >

> _______________________________________________
> ltt-dev mailing list
> ltt-dev at lists.casi.polymtl.ca
> http://lists.casi.polymtl.ca/cgi-bin/mailman/listinfo/ltt-dev


-- 
Mathieu Desnoyers
OpenPGP key fingerprint: 8CD5 52C3 8E3C 4140 715F  BA06 3F25 A8FE 3BAE 9A68

[ltt-dev] LTT Userspace problems

[Douglas Santos]

Quoting Mathieu Desnoyers <compudj at krystal.dyndns.org>:
> It should clearly be created automatically by UST.

here you are

--- usttrace.orig	2009-11-13 14:35:47.000000000 -0500
+++ usttrace	2010-01-28 10:24:20.000000000 -0500
@@ -78,6 +78,18 @@
 OUTDIR="$BASE_TRACE_DIR/$DATESTRING"
 mkdir -p "$OUTDIR"

+# create socks directory
+SOCKSDIR=/tmp/socks
+if [ ! -d $SOCKSDIR ]
+then
+	echo "Creating $SOCKSDIR"
+	mkdir -p "$SOCKSDIR"
+ 	if [ $? -ne 0 ]
+	then
+		exit 1
+	fi
+fi
+
 # Choose socket path
 SOCKPATH="/tmp/ust-sock-$$"

[ltt-dev] LTT Userspace problems

[Pierre-Marc Fournier]

Naren wrote:
> Hi,
> 
> Yes, it worked after the creation of "socks" directory under "tmp".
> 
> 1. I presume that tmp/socks will be automatically created by UST unlike
> the manual creation done by me to make it   work. 
> 2. Every time, the system restarts, the user created folders are deleted
> hence the need to create the socks directory after every restart.
>
> Can you clarify on the above mentioned points and whether it is by
> purpose that tmp/socks directory needs to be created manually or is
> there something wrong with the UST installation.
>

This was a problem in version 0.1. Just pushed commit dce0b474515 which
automatically creates the app socket directory.

Thanks for the feedback.

pmf

[ltt-dev] LTT Userspace problems

[Mathieu Desnoyers]

* Douglas Santos (douglas.santos at polymtl.ca) wrote:
> Quoting Mathieu Desnoyers <compudj at krystal.dyndns.org>:
> > It should clearly be created automatically by UST.
> 
> here you are

It looks like there was already a pending commit to fix this. Thanks for
the patch anyway, it's very appreciated.

Mathieu

> 
> --- usttrace.orig	2009-11-13 14:35:47.000000000 -0500
> +++ usttrace	2010-01-28 10:24:20.000000000 -0500
> @@ -78,6 +78,18 @@
>  OUTDIR="$BASE_TRACE_DIR/$DATESTRING"
>  mkdir -p "$OUTDIR"
> 
> +# create socks directory
> +SOCKSDIR=/tmp/socks
> +if [ ! -d $SOCKSDIR ]
> +then
> +	echo "Creating $SOCKSDIR"
> +	mkdir -p "$SOCKSDIR"
> + 	if [ $? -ne 0 ]
> +	then
> +		exit 1
> +	fi
> +fi
> +
>  # Choose socket path
>  SOCKPATH="/tmp/ust-sock-$$"
> 
> 

-- 
Mathieu Desnoyers
OpenPGP key fingerprint: 8CD5 52C3 8E3C 4140 715F  BA06 3F25 A8FE 3BAE 9A68

[ltt-dev] LTT Userspace problems

[Pierre-Marc Fournier]

Douglas Santos wrote:
> Quoting Mathieu Desnoyers <compudj at krystal.dyndns.org>:
>> It should clearly be created automatically by UST.
> 
> here you are
> 
> --- usttrace.orig	2009-11-13 14:35:47.000000000 -0500
> +++ usttrace	2010-01-28 10:24:20.000000000 -0500
> @@ -78,6 +78,18 @@
>  OUTDIR="$BASE_TRACE_DIR/$DATESTRING"
>  mkdir -p "$OUTDIR"
> 
> +# create socks directory
> +SOCKSDIR=/tmp/socks
> +if [ ! -d $SOCKSDIR ]
> +then
> +	echo "Creating $SOCKSDIR"
> +	mkdir -p "$SOCKSDIR"
> + 	if [ $? -ne 0 ]
> +	then
> +		exit 1
> +	fi
> +fi
> +
>  # Choose socket path
>  SOCKPATH="/tmp/ust-sock-$$"
> 
> 

Thanks. Not a bad idea, however it doesn't cover all the cases. When ust
is used in manual mode (no usttrace), the directory still need to be
created. The patch I applied changes the behavior in libustcomm directly.

pmf