Re: [Libguestfs] [PATCH nbdkit v5 FINAL 14/19] data, memory: Implement extents.

> But since then, we've fixed the truncate filter to allocate a second > extents bounded by the truncation size to hand to next_ops->extents, so > even if the plugin calls nbdkit_add_extent with information beyond the > length that the truncation filter cares about, the result is still > bounded to the truncation's choice of end offset. So I think we have > indeed fixed the initial problem. I moved the clamp as originally suggested in your email here: https://www.redhat.com/archives/libguestfs/2019-March/msg00126.html The output from the commands above is the same and the tests pass. Patch is below. Rich. >From a2b7ce7538742fa703d06d78b4159f0705775256 Mon Sep 17 00:00:00 2001 From: "Richard W.M. Jones" <rjones(a)redhat.com&gt; Date: Wed, 24 Apr 2019 12:24:07 +0100 Subject: [PATCH] common/sparse: Return the maximum amount of information about sparseness. By moving the clamp we can return more information about sparseness that we have but which was not requested. This is permitted and can improve the efficiency of clients. See: https://www.redhat.com/archives/libguestfs/2019-April/msg00192.html