Re: [PATCH] xfsrestore: use utimensat() to provide atime/mtime with ns resolution

[Dave Chinner <david@xxxxxxxxxxxxx>]

On Thu, Sep 04, 2014 at 12:38:28PM -0400, Brian Foster wrote:
> xfsdump encodes and stores the full atime and mtime for each file with
> nanosecond resolution. xfsrestore uses utime() to set the times of each
> file that is restored. The latter supports resolution of 1 second, thus
> sub-second timestamp data is lost on restore.

That doesn't seem like a big deal. What sort of problems does this
actually cause?

FYI, many linux filesystems only have second resolution timestamps
and hence applications can't rely on sub-second timestamp resolution
to actually mean anything useful....

Cheers,

Dave.
-- 
Dave Chinner
david@xxxxxxxxxxxxx