From: Eric Blake <eblake@redhat.com>
Date: Fri, 25 Oct 2019 21:15:51 +0000 (-0500)
Subject: Tweak minimum version of nbdkit to match fast-zero and reflection demos.
X-Git-Url: http://git.annexia.org/?a=commitdiff_plain;h=8e9df69ffa18953218f9b7dd69ebe789117e0bed;p=libguestfs-talks.git

Tweak minimum version of nbdkit to match fast-zero and reflection demos.
---

diff --git a/2019-kvm-forum/9000-final.html b/2019-kvm-forum/9000-final.html
index 75b0faf..1bcf7d0 100644
--- a/2019-kvm-forum/9000-final.html
+++ b/2019-kvm-forum/9000-final.html
@@ -14,9 +14,9 @@
 <h2>Get it</h2>
 
 <ul>
-<li> nbdkit &ge; 1.14 (released, available on rawhide).
+<li> nbdkit &ge; 1.15.6
  <a href="https://github.com/libguestfs/nbdkit">https://github.com/libguestfs/nbdkit</a>
-<li> libnbd &ge; 1.2 (not yet released).
+<li> libnbd &ge; 1.1.5
  <a href="https://github.com/libguestfs/libnbd">https://github.com/libguestfs/libnbd</a>
 <li> qemu &ge; 4.2 (not yet released).
  <a href="https://qemu.org/">https://qemu.org</a>
diff --git a/2019-kvm-forum/code.js b/2019-kvm-forum/code.js
index a418c8d..ccbe20a 100644
--- a/2019-kvm-forum/code.js
+++ b/2019-kvm-forum/code.js
@@ -2,7 +2,7 @@ function plugins ()
 {
     document.write ("\
 <div class=\"plugins\"> \
-<p id=\"caption\">plugins available in nbdkit 1.14</p> \
+<p id=\"caption\">plugins available in nbdkit 1.15.6</p> \
 <ul> \
 <li id=\"plugin-curl\"> curl \
 <li id=\"plugin-data\"> data \
@@ -12,6 +12,7 @@ function plugins ()
 <li id=\"plugin-full\"> full \
 <li id=\"plugin-guestfs\"> guestfs \
 <li id=\"plugin-gzip\"> gzip \
+<li id=\"plugin-info\"> info \
 <li id=\"plugin-iso\"> iso \
 <li id=\"plugin-libvirt\"> libvirt \
 <li id=\"plugin-linuxdisk\"> linuxdisk \
@@ -43,7 +44,7 @@ function filters (layer)
 {
     document.write ("\
 <div class=\"filters\"> \
-<p class=\"filtercaption\">filters available in nbdkit 1.14</p> \
+<p class=\"filtercaption\">filters available in nbdkit 1.15.6</p> \
 <ul> \
 <li id=\"filter" + layer + "-blocksize\"> blocksize \
 <li id=\"filter" + layer + "-cache\"> cache \
@@ -61,6 +62,7 @@ function filters (layer)
 <li id=\"filter" + layer + "-partition\"> partition \
 <li id=\"filter" + layer + "-rate\"> rate \
 <li id=\"filter" + layer + "-readahead\"> readahead \
+<li id=\"filter" + layer + "-retry\"> retry \
 <li id=\"filter" + layer + "-stats\"> stats \
 <li id=\"filter" + layer + "-truncate\"> truncate \
 <li id=\"filter" + layer + "-xz\"> xz \
diff --git a/2019-kvm-forum/notes-04-fast-zero b/2019-kvm-forum/notes-04-fast-zero
index 989e800..19622d0 100644
--- a/2019-kvm-forum/notes-04-fast-zero
+++ b/2019-kvm-forum/notes-04-fast-zero
@@ -113,17 +113,18 @@ of the box.
 - 4700- nbdkit filters/plugins that were adjusted
 
 The qemu implementation was quite trivial (map the new NBD flag to the
-existing BDRV_REQ_NO_FALLBACK flag, in both client and server).  But
-to actually get the NBD extension into the protocol, it's better to
-prove that the extension will be interoperable with other NBD
-implementations.  So, the obvious second implementation is libnbd for
-a client (adding a new flag to nbd_zero, and support for mapping a new
-errno value, due out in 1.2), and nbdkit for a server (adding a new
-.can_fast_zero callback for plugins and filters, then methodically
-patching all in-tree files where it can be reasonably implemented,
-released in 1.14).  Among other things, the nbdkit changes to the
-nozero filter added the parameters I used in my demo for controlling
-whether to advertise and/or honor the semantics of the new flag.
+existing BDRV_REQ_NO_FALLBACK flag, in both client and server, due out
+in qemu 4.2).  But to actually get the NBD extension into the
+protocol, it's better to prove that the extension will be
+interoperable with other NBD implementations.  So, the obvious second
+implementation is libnbd for a client (adding a new flag to nbd_zero,
+and support for mapping a new errno value, due out in 1.2), and nbdkit
+for a server (adding a new .can_fast_zero callback for plugins and
+filters, then methodically patching all in-tree files where it can be
+reasonably implemented, due out in 1.16).  Among other things, the
+nbdkit changes to the nozero filter added the parameters I used in my
+demo for controlling whether to advertise and/or honor the semantics
+of the new flag.
 
 [if time:] Note that the file plugin was not touched in the initial
 patches. This is because accurate support is harder than it looks:
diff --git a/2019-kvm-forum/run b/2019-kvm-forum/run
index 6c04a17..feafd8c 100755
--- a/2019-kvm-forum/run
+++ b/2019-kvm-forum/run
@@ -21,7 +21,7 @@ mkdir 6200-vddk.d/mp
 #rm -f 6200-vddk.d/fedora.vmdk
 #unxz --keep 6200-vddk.d/fedora.vmdk.xz
 
-# Run techtalk.  The demos require nbdkit 1.14, libnbd 1.1.5, and qemu 4.2,
+# Run techtalk.  The demos require nbdkit 1.15.6, libnbd 1.1.5, and qemu 4.2,
 # which are not present in Fedora 30, so point to self-built versions.
 export PATH=$HOME/d/nbdkit:$HOME/d/qemu:$PATH
 $HOME/d/libnbd/run techtalk-pse