[dm-devel] [PATCH] dm-statistics: report precise timestamps and histogram

[Bryn M. Reeves]

On Tue, Aug 18, 2015 at 04:26:16PM -0400, Mikulas Patocka wrote:
> If the user selected precise timestamps or histogram, report it in the
> output of the @stats_list message.
> 
> If the user didn't select these options, no extra tokens are reported,
> thus it is backward compatible with old software that doesn't know about
> precise timestamps and histogram.

It's not strictly backwards compatible in that someone mixing old and
new code could have a situation where "old" dm-stats parsing code could
see entries in list output created using "new" features.

This would only affect users not implementing program_id filtering (or
using it in broken ways) though so it's probably insignificant enough to
be ignored.

Regards,
Bryn.