[Ocfs2-devel] [PATCH v2] ocfs2: Try to free truncate log when meeting ENOSPC in write.

[Sunil Mushran]

On 12/07/2010 05:58 PM, Joel Becker wrote:
> On Thu, Nov 04, 2010 at 03:14:11PM +0800, Tao Ma wrote:
>> Recently, one of our colleagues meet with a problem that if we
>> write/delete a 32mb files repeatly, we will get an ENOSPC in
>> the end. And the corresponding bug is 1288.
>> http://oss.oracle.com/bugzilla/show_bug.cgi?id=1288
>>
>> The real problem is that although we have freed the clusters,
>> they are in truncate log and they will be summed up so that
>> we can free them once in a whole.
>>
>> So this patch just try to resolve it. In case we see -ENOSPC
>> in ocfs2_write_begin_no_lock, we will check whether the truncate
>> log has enough clusters for our need, if yes, we will try to
>> flush the truncate log at that point and try again. This method
>> is inspired by Mark Fasheh<mfasheh at suse.com>. Thanks.
> 	I think I like this.  Anyone have any objections?

Looks good.