[Lustre-devel] accessing object version from user space?

Erich Focht efocht at gmail.com
Wed May 4 09:36:36 PDT 2011

On 05/03/2011 09:35 PM, Andreas Dilger wrote:
> On May 3, 2011, at 06:46, Erich Focht wrote:
>> is there a way to access the file objects version information (epoch, transno, whatever is used
>> for version based recovery) from user space? If yes, is that possible for lustre 1.8.x, too?
>> Looking for a way to check (quickly) whether a file has changed while copying it away...
> Comparing the ctime at the start/end of the copy should be enough for that.

You mean ctime of Lustre file, or ctime of file objects on OSTs? Is there a nice way to access those?
Maybe I'm a bit paranoid, but what if a client loses connection to MDS while continuing to write to
OSTs? Just a thought...

Thanks & best regards,

More information about the lustre-devel mailing list