On Thu, 28 Jul 2011 10:09:39 -0400 Jeffrey Altman <[email protected]> wrote:
> File systems do not copy this information to each other directly. All > metadata is copied through an operating system VFS layer. Are there > any VFS layers that actually provide better than 100ns resolution? I've been told verbally (informally) that z/OS offers ns-granular timestamp information. I can't find documentation confirming that, but I'm not really sure where to look, either. It's also not strictly true that we always go through a VFS layer, since we could be translating directly to/from NFS, or there could be a userspace application that speaks those protocols directly. Going through an OS VFS is certainly the vast vast majority of cases, though. I'm not saying that means we care, but I believe those are some cases where we would lose precision. -- Andrew Deason [email protected] _______________________________________________ AFS3-standardization mailing list [email protected] http://lists.openafs.org/mailman/listinfo/afs3-standardization
