[Ocfs2-devel] [2.6.6 svn 1364]System hang randomly when writing to the same file from different processes of the same node

[Chen, Yukun]

Hi Mark

I checked the version and found 1364 on both nodes. Also, I attached the test cases for duplicating such bug.

The steps to run the test case:

1. make sure you have setup the tvs environment

2. make sure the two test machine can ssh each other as root without password 

3.update the variable OCFSDEV in test.config to the device name of your ocfs2 partition

4.update the variable REMOTE in setup.sh to the remote machine name

5.make sure you have created dir /ocfs (I will updated it later to an arbitrary dir which the user can change in the latter version)

6.run "test_filelock.sh"

Feel free let me if you have any problems. 
Thanx.

Aaron

-----Original Message-----
From: Mark Fasheh [mailto:mark.fasheh at oracle.com] 
Sent: 2004Äê8ÔÂ21ÈÕ 1:43
To: Chen, Yukun
Cc: ocfs2-devel at oss.oracle.com
Subject: Re: [Ocfs2-devel] [2.6.6 svn 1364]System hang randomly when writing to the same file from different processes of the same node


Are all your nodes updated to r1364 btw? That'd make a big difference as the
voting flags got juggled around a bit (sorry!) Otherwise it looks like it's
hung doing a TRUNCATE_PAGES message which would be very troubling indeed. If
both nodes *are* in fact, running 1364, you mind posting your test code up
so I can give it a try? Thanks,
	--Mark

On Fri, Aug 20, 2004 at 04:24:37PM +0800, Chen, Yukun wrote:
> Hi all
>
> 
> Steps to duplicate:
> 
> 1.Do some operation ,such as mkdir&touch , on node A and node B
> 
>  
> 
> 2.on node A process1  write to a file at a specific position(such as offset
> 1000) ,100 times
> 
>  
> 
> 2.also on node A, at the same time , process2 write to the same file at the
> 
>  
> 
> same position, 100 times
> 
>  
> 
> Repeat step 1-2 several times, system will hang with the following message
> found in node A:
> 
>  
> 
> state=1, lockid=22765568, flags = 0x1000, asked type = 5 master = 1, state =
> 0x0, type = 5
> 
> (18397) ERROR at /tmp/trunk/src/dlm.c, 461: status = -110
> 
> (18397) ERROR at /tmp/trunk/src/vote.c, 910: inode 5558, vote_status=0,
> vote_state=1, lockid=22765568, flags = 0x1000, asked type = 5 master = 1, state
> = 0x0, type = 5
> 
> ...
> 
>  
> 
> on node B , error message with dmesg:
> 
> Call Trace:
> 
> recalc_task_prio
> 
> shedule
> 
> ocfs_comm_process_msg
> 
> ocfs_dlm_recv_msg
> 
> worker_thread
> 
> ocfs_dlm_recv_msg
> 
> default_wake_function
> 
> ....
> 
>  
> 
> Any ideas on it? thanx.
> 
>  
> 
> Aaron
> 
> Intel China Software Lab
> 
> Tel:  8621-52574545 Ext.1587
> 
> E_mail:yukun.chen at intel.com
> 
>  
> 

> _______________________________________________
> Ocfs2-devel mailing list
> Ocfs2-devel at oss.oracle.com
> http://oss.oracle.com/mailman/listinfo/ocfs2-devel

--
Mark Fasheh
Software Developer, Oracle Corp
mark.fasheh at oracle.com
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