CentOS - Dec 2009 - Cnetos 5.4 ext3 question...

I could find this out but at the moment I dont have a copy of 5.4 running,
can anyone tell me for a default centos5.4 install are ext3 barriers on by
default?  Thanks in advance...
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On Mon, Dec 28, 2009 at 10:25:01AM -0600, Tom Bishop
wrote:
> I could find this out but at the moment I dont have a copy of 5.4 running,
> can anyone tell me for a default centos5.4 install are ext3 barriers on by
> default?  Thanks in advance...
Pretty sure they are off by default (and were on the box I just checked
against).

Ray

Ross Walker wrote:
> On Dec 28, 2009, at 1:41 PM, Les Mikesell <lesmikesell at gmail.com>
wrote:
> 
>> Did linux ever get a working fsync() or does it still flush the entire
>> filesystem buffer?
> 
> Working, meaning reliable, or the ability to sync a memory range  
> instead of the whole file system? There is sync_page_range() to only  
> sync only a range, but I think the biggest issue is whether it  
> actually assures it makes it to disk or just out of memory.
I mean the ability to sync only the buffer associated with the single file 
specified by the file descriptor in the argument - without waiting for a bunch 
of other unrelated and irrelevant data to sync along with it.

-- 
   Les Mikesell
    lesmikesell at gmail.com