[Pvfs2-developers] Hang at server shutdown

[Sam Lang]

I'm a little skeptical that this is a bug outside of mx or ib.  Scott  
do you get the same behavior from valgrind if you use tcp?  Or even  
get the same hang on sighup if you use tcp?

-sam

On Jan 18, 2007, at 3:33 PM, Murali Vilayannur wrote:

> Hi Scott,
> Just a shot into the wild...
> Can you do
> % mv /lib/tls /lib/tls.old
>
> and then rerun the server with valgrind..
> Quite possibly this is a valid bug in pvfs2, just wanted to find out
> if the error message is any different after you do the above..
> Don't forget to revert the rename
> % mv /lib/tls.old /lib/tls
> after you are done.
> thanks,
> Murali
>
> On 1/18/07, Scott Atchley <atchley at myri.com> wrote:
>> On Jan 18, 2007, at 3:07 PM, Sam Lang wrote:
>>
>> >> To answer my own question, send a HUP, then continue the process
>> >> in GDB. :-)
>> >
>> > You can also do 'signal SIGHUP' at the gdb prompt.
>>
>> That is good to know. Thanks.
>>
>> > So this looks like its just related to the invalid free in the mx
>> > code (and the ib code I guess).  You could run it in valgrind to
>> > verify that probably.  Can you set the map pointer to null and
>> > check on the next attempt to free it?
>> >
>> > -sam
>>
>> When I try to use valgrind, the server fails to start with:
>>
>> ...
>> [D 01/18 15:35] bmi_mx: memory used at end of initialization  
>> 17200540.
>> [D 01/18 15:35] bmi_mx: entering BMI_mx_set_info.
>> [D 01/18 15:35] bmi_mx: leaving BMI_mx_set_info.
>> [D 01/18 15:35] bmi_mx: entering BMI_mx_set_info.
>> [D 01/18 15:35] bmi_mx: leaving BMI_mx_set_info.
>> [E 01/18 15:35] TROVE:DBPF:Berkeley DB: read: 0x1f9fc7f0, 4096: Bad
>> address <-----------
>> [E 01/18 15:35] TROVE:DBPF:Berkeley DB: //scratch/atchley/4e901077/
>> collection_attributes.db: Bad address
>> [E 01/18 15:35] src/server/pvfs2-server.c line 1077: Error
>> initializing filesystem pvfs2-fs
>> [E 01/18 15:35]         [bt] ./sbin/pvfs2-server [0x8054db6]
>> [E 01/18 15:35]         [bt] ./sbin/pvfs2-server [0x8054661]
>> [E 01/18 15:35]         [bt] ./sbin/pvfs2-server(main+0x4b0)  
>> [0x8054048]
>> [E 01/18 15:35]         [bt] /lib/tls/libc.so.6(__libc_start_main
>> +0xf4) [0x1ba42974]
>> [E 01/18 15:35]         [bt] ./sbin/pvfs2-server(aio_cancel64+0x69)
>> [0x8053971]
>> [E 01/18 15:35] Error: Could not initialize server interfaces;  
>> aborting.
>> [E 01/18 15:35] Error: Could not initialize server; aborting.
>> [D 01/18 15:35] bmi_mx: entering BMI_mx_finalize.
>> ...
>>
>> Setting the inout_parameter pointer to NULL has no effect.
>>
>> Scott
>>
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>