[Ocfs2-devel] dlm stress test hangs OCFS2

[Coly Li]

Sunil Mushran Wrote:
> So the thread is removing the lockres from the list (thus making
> the count 0), and then calling ocfs2_process_blocked_lock() which
> is adding that lockres back in the list (thus 1).
> 
> Trace ocfs2_process_blocked_lock() to see as to why it is putting it
> back on the list.
>> 2) when the blocking happens, the number sequence of
>> osb->blocked_lock_count is
>> always like this,
>> ocfs2_downconvert_thread_do_work:3725: osb->blocked_lock_count: 0
>> ocfs2_downconvert_thread_do_work:3725: osb->blocked_lock_count: 1
>> ocfs2_downconvert_thread_do_work:3725: osb->blocked_lock_count: 0
>> ocfs2_downconvert_thread_do_work:3725: osb->blocked_lock_count: 1
>> ocfs2_downconvert_thread_do_work:3725: osb->blocked_lock_count: 0
>> ocfs2_downconvert_thread_do_work:3725: osb->blocked_lock_count: 1
>> ocfs2_downconvert_thread_do_work:3725: osb->blocked_lock_count: 0
>> ocfs2_downconvert_thread_do_work:3725: osb->blocked_lock_count: 1
>> ocfs2_downconvert_thread_do_work:3725: osb->blocked_lock_count: 0
>> ocfs2_downconvert_thread_do_work:3725: osb->blocked_lock_count: 1
>> ocfs2_downconvert_thread_do_work:3725: osb->blocked_lock_count: 0
>> ocfs2_downconvert_thread_do_work:3725: osb->blocked_lock_count: 1
>> ocfs2_downconvert_thread_do_work:3725: osb->blocked_lock_count: 0
>> ocfs2_downconvert_thread_do_work:3725: osb->blocked_lock_count: 1
>> ocfs2_downconvert_thread_do_work:3725: osb->blocked_lock_count: 0
>> ocfs2_downconvert_thread_do_work:3725: osb->blocked_lock_count: 1
>> ocfs2_downconvert_thread_do_work:3725: osb->blocked_lock_count: 0
>> ocfs2_downconvert_thread_do_work:3725: osb->blocked_lock_count: 1
>> (all are 0-1-0-1-0-1-... in a regular sequence)
>>

I also observed even when no file is created or unlinked, I did nothing. From
dmesg output, the above information still infinite running, on both nodes.



-- 
Coly Li
SuSE Labs