From: Sunil Mushran <sunil.mushran@oracle.com>
To: ocfs2-devel@oss.oracle.com
Subject: [Ocfs2-devel] dlm stress test hangs OCFS2
Date: Thu, 03 Sep 2009 09:24:12 -0700 [thread overview]
Message-ID: <4A9FEDAC.50704@oracle.com> (raw)
In-Reply-To: <4A9FEDA8.3080108@suse.de>
You will have to trace thru process_blocked_lock() to make sense of this.
Coly Li wrote:
> 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.
>
>
>
>
next prev parent reply other threads:[~2009-09-03 16:24 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-08-18 19:26 [Ocfs2-devel] dlm stress test hangs OCFS2 Coly Li
2009-08-18 19:34 ` David Teigland
2009-08-19 3:06 ` Sunil Mushran
2009-09-02 17:11 ` Coly Li
2009-09-02 22:01 ` Sunil Mushran
2009-09-03 16:24 ` Coly Li
2009-09-03 16:24 ` Sunil Mushran [this message]
2009-09-09 20:07 ` Coly Li
2009-09-09 21:42 ` Sunil Mushran
2009-09-10 5:38 ` Coly Li
2009-09-11 22:57 ` Sunil Mushran
2009-09-13 14:08 ` Coly Li
2009-09-14 19:30 ` Sunil Mushran
2009-09-14 20:23 ` Coly Li
2009-09-14 23:57 ` Sunil Mushran
2009-09-15 7:11 ` Coly Li
2009-09-16 0:49 ` Sunil Mushran
2009-09-21 17:25 ` Coly Li
2009-09-21 17:25 ` Sunil Mushran
2009-09-21 17:31 ` Sunil Mushran
2009-09-21 17:43 ` Coly Li
2009-09-21 19:03 ` Coly Li
2009-09-23 6:32 ` [Ocfs2-devel] questions of AST and BAST (was Re: dlm stress test hangs OCFS2) Coly Li
2009-09-23 18:21 ` Sunil Mushran
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