[Ocfs-users] Back to the Async I/O questions/issues

[Sunil Mushran]

debugocfs -f /filepath_without_mountpath  /dev/sdX
will list the fileentry.

1. granularity should be -1 (and local_ext=true).
2. only extents[0] should have values.
        extent[0].file_off = 0
        extent[0].num_bytes = 106496
        extent[0].disk_off = 181178368

All log files need to be contiguous. You can do that manually by
creating a file using dd and then reusing the file as a log file.
ocfsextfinder shows the largest free contiguous blocks available.

On Wed, 2004-06-16 at 06:58, David McWhinnie wrote:
> Sunil Wrote:
> "So, if anyone were to ask, does ocfs support asyncio,
> the easier answer is no. However, if someone
> persisted, the answer is, only if your logfiles are
> contiguous. And as that gets into reading debugocfs
> outputs, the user has to make the determination, if
> the effort is worth the gain in performance."
> 
> I guess I am persisting.  We are seeing some
> performace issues and would like to turn on Async I/O.
>  Any advice for turning on and reading the debugocfs
> outputs?
> 
> 
> 
> 		
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