Start 2019 FOSDEM talk about NBD.

diff --git a/2019-fosdem/.gitignore b/2019-fosdem/.gitignore
new file mode 100644 (file)
index 0000000..4148a9c
--- /dev/null
+++ b/2019-fosdem/.gitignore
@@ -0,0 +1,11 @@
+/bindings
+/history
+/1000-loopback-mounting.d/fedora-29.img
+/2000-xz-compressed.d/Fedora-Cloud-Base-29-1.2.x86_64.raw.xz
+/3500-partitioning.d/boot.img
+/3500-partitioning.d/.root.img
+/3500-partitioning.d/root.img
+/3500-partitioning.d/swap.img
+/nbdview/error?
+/nbdview/log?
+/nbdview/sock?
\ No newline at end of file

diff --git a/2019-fosdem/0000-introduction.html b/2019-fosdem/0000-introduction.html
new file mode 100644 (file)
index 0000000..671e7be
--- /dev/null
+++ b/2019-fosdem/0000-introduction.html
@@ -0,0 +1,22 @@
+<meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
+<link rel="stylesheet" href="style.css" type="text/css"/>
+<script src="code.js" type="text/javascript"></script>
+
+<div id="titlepage">
+  <p class="title">
+    Better loopback mounts with NBD &mdash; <br/>
+    <small>Take your loopback mounts to the next level with nbdkit</small>
+  </p>
+  <p><author>
+      Richard W.M. Jones <br/>
+      <small>rjones @ redhat.com</small>
+  </author></p>
+  <p>
+    <b>Loopback devices</b> let you turn a raw file into a device.
+    <b>Loopback mounts</b> let you mount filesystems from a raw file.
+    <b>Network Block Device</b> with the <b>nbdkit</b> server takes
+    this concept to the next level, elegantly solving simple problems
+    like how to mount filesystems from a compressed file, but as we
+    shall see in this talk offering far, far more ...
+  </p>
+</div>

diff --git a/2019-fosdem/1000-loopback-mounting.d/.stamp b/2019-fosdem/1000-loopback-mounting.d/.stamp
new file mode 100644 (file)
index 0000000..e69de29

diff --git a/2019-fosdem/1000-loopback-mounting.term b/2019-fosdem/1000-loopback-mounting.term
new file mode 100755 (executable)
index 0000000..9302414
--- /dev/null
+++ b/2019-fosdem/1000-loopback-mounting.term
@@ -0,0 +1,18 @@
+#!/bin/bash -
+
+source functions
+
+# History.
+remember 'sudo losetup --list'
+remember 'ls -lh fedora-29.img'
+remember 'sudo losetup /dev/loop0 fedora-29.img'
+remember 'sudo kpartx -av /dev/loop0'
+remember 'sudo mount /dev/mapper/loop0p4 /tmp/mnt'
+remember 'ls -l /tmp/mnt'
+
+echo "Loopback mounting"
+
+./restore
+pushd 1000-loopback-mounting.d >/dev/null
+terminal
+popd >/dev/null

diff --git a/2019-fosdem/2000-xz-compressed.d/.stamp b/2019-fosdem/2000-xz-compressed.d/.stamp
new file mode 100644 (file)
index 0000000..e69de29

diff --git a/2019-fosdem/2000-xz-compressed.term b/2019-fosdem/2000-xz-compressed.term
new file mode 100755 (executable)
index 0000000..f73a32e
--- /dev/null
+++ b/2019-fosdem/2000-xz-compressed.term
@@ -0,0 +1,18 @@
+#!/bin/bash -
+
+source functions
+
+# History.
+remember 'ls -lh Fedora-Cloud-Base-29-1.2.x86_64.raw.xz'
+remember 'nbdkit xz Fedora-Cloud-Base-29-1.2.x86_64.raw.xz'
+remember 'ps ax | grep nbdkit'
+remember 'sudo nbd-client -b 512 localhost /dev/nbd0'
+remember 'sudo mount /dev/nbd0p1 /tmp/mnt'
+remember 'ls -l /tmp/mnt'
+
+echo "XZ compressed image"
+
+./restore
+pushd 2000-xz-compressed.d >/dev/null
+terminal
+popd >/dev/null

diff --git a/2019-fosdem/2100-xz-writable.term b/2019-fosdem/2100-xz-writable.term
new file mode 100755 (executable)
index 0000000..41816bb
--- /dev/null
+++ b/2019-fosdem/2100-xz-writable.term
@@ -0,0 +1,19 @@
+#!/bin/bash -
+
+source functions
+
+# History.
+remember 'ls -lh Fedora-Cloud-Base-29-1.2.x86_64.raw.xz'
+remember 'nbdkit --filter=cow xz Fedora-Cloud-Base-29-1.2.x86_64.raw.xz'
+remember 'ps ax | grep nbdkit'
+remember 'sudo nbd-client -b 512 localhost /dev/nbd0'
+remember 'sudo mount /dev/nbd0p1 /tmp/mnt'
+remember 'ls -l /tmp/mnt'
+remember 'sudo touch /tmp/mnt/hello-fosdem'
+
+echo "XZ with a writable filter"
+
+./restore
+pushd 2000-xz-compressed.d >/dev/null
+terminal
+popd >/dev/null

diff --git a/2019-fosdem/2500-about-nbdkit.html b/2019-fosdem/2500-about-nbdkit.html
new file mode 100644 (file)
index 0000000..b403f01
--- /dev/null
+++ b/2019-fosdem/2500-about-nbdkit.html
@@ -0,0 +1,42 @@
+<meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
+<link rel="stylesheet" href="style.css" type="text/css"/>
+<script src="code.js" type="text/javascript"></script>
+
+<h1>nbdkit &mdash; plugins</h1>
+
+<!-- note: div must have position: relative so child elements position
+     is correct -->
+<div style="background: #ccf; border: 1px solid rgb(204,0,0);
+            position:relative;
+            width: 800px; height: 400px;">
+  <code style="position: absolute; top: 1px; left: 10px;">curl</code>
+  <code style="position: absolute; top: 50px; left: 20px;">data</code>
+  <code style="position: absolute; top: 100px; left: 10px;">ext2</code>
+  <code style="position: absolute; top: 120px; left: 140px;">file</code>
+  <code style="position: absolute; top: 150px; left: 10px;">floppy</code>
+  <code style="position: absolute; top: 200px; left: 20px;">guestfs</code>
+  <code style="position: absolute; top: 250px; left: 10px;">gzip</code>
+  <code style="position: absolute; top: 280px; left: 150px;">iso</code>
+  <code style="position: absolute; top: 350px; left: 10px;">libvirt</code>
+
+  <code style="position: absolute; top: 5px; left: 340px;">lua</code>
+  <code style="position: absolute; top: 55px; left: 380px;">memory</code>
+  <code style="position: absolute; top: 105px; left: 340px;">nbd</code>
+  <code style="position: absolute; top: 125px; left: 450px;">null</code>
+  <code style="position: absolute; top: 155px; left: 340px;">ocaml</code>
+  <code style="position: absolute; top: 185px; left: 160px;">partitioning</code>
+  <code style="position: absolute; top: 240px; left: 380px;">pattern</code>
+  <code style="position: absolute; top: 300px; left: 320px;">perl</code>
+  <code style="position: absolute; top: 340px; left: 280px;">python</code>
+
+  <code style="position: absolute; top: 10px; left: 600px;">random</code>
+  <code style="position: absolute; top: 60px; left: 600px;">ruby</code>
+  <code style="position: absolute; top: 90px; left: 700px;">sh</code>
+  <code style="position: absolute; top: 130px; left: 590px;">split</code>
+  <code style="position: absolute; top: 180px; left: 600px;">streaming</code>
+  <code style="position: absolute; top: 190px; left: 450px;">tar</code>
+  <code style="position: absolute; top: 230px; left: 580px;">tcl</code>
+  <code style="position: absolute; top: 260px; left: 650px;">vddk</code>
+  <code style="position: absolute; top: 290px; left: 600px;">xz</code>
+  <code style="position: absolute; top: 320px; left: 600px;">zero</code>
+</div>

diff --git a/2019-fosdem/2510-about-nbdkit-today.html b/2019-fosdem/2510-about-nbdkit-today.html
new file mode 100644 (file)
index 0000000..6bde71e
--- /dev/null
+++ b/2019-fosdem/2510-about-nbdkit-today.html
@@ -0,0 +1,51 @@
+<meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
+<link rel="stylesheet" href="style.css" type="text/css"/>
+<script src="code.js" type="text/javascript"></script>
+
+<h1>nbdkit &mdash; plugins</h1>
+
+<style>
+b {
+    border: 1px solid rgb(204,0,0);
+    background: #eef;
+    padding: 5px;
+    border-radius: 15px;
+}
+</style>
+
+<!-- note: div must have position: relative so child elements position
+     is correct -->
+<div style="background: #ccf; border: 1px solid rgb(204,0,0);
+            position:relative;
+            width: 800px; height: 400px;">
+  <code style="position: absolute; top: 1px; left: 10px;">curl</code>
+  <code style="position: absolute; top: 50px; left: 20px;">data</code>
+  <code style="position: absolute; top: 100px; left: 10px;">ext2</code>
+  <code style="position: absolute; top: 120px; left: 140px;"><b>file</b></code>
+  <code style="position: absolute; top: 150px; left: 10px;">floppy</code>
+  <code style="position: absolute; top: 200px; left: 20px;">guestfs</code>
+  <code style="position: absolute; top: 250px; left: 10px;">gzip</code>
+  <code style="position: absolute; top: 280px; left: 150px;">iso</code>
+  <code style="position: absolute; top: 350px; left: 10px;">libvirt</code>
+
+  <code style="position: absolute; top: 5px; left: 340px;">lua</code>
+  <code style="position: absolute; top: 55px; left: 380px;"><b>memory</b></code>
+  <code style="position: absolute; top: 105px; left: 340px;">nbd</code>
+  <code style="position: absolute; top: 125px; left: 450px;">null</code>
+  <code style="position: absolute; top: 155px; left: 340px;">ocaml</code>
+  <code style="position: absolute; top: 185px; left: 160px;"><b>partitioning</b></code>
+  <code style="position: absolute; top: 240px; left: 380px;">pattern</code>
+  <code style="position: absolute; top: 300px; left: 320px;">perl</code>
+  <code style="position: absolute; top: 340px; left: 280px;">python</code>
+
+  <code style="position: absolute; top: 10px; left: 600px;">random</code>
+  <code style="position: absolute; top: 60px; left: 600px;">ruby</code>
+  <code style="position: absolute; top: 90px; left: 700px;"><b>sh</b></code>
+  <code style="position: absolute; top: 130px; left: 590px;">split</code>
+  <code style="position: absolute; top: 180px; left: 600px;">streaming</code>
+  <code style="position: absolute; top: 190px; left: 450px;">tar</code>
+  <code style="position: absolute; top: 230px; left: 580px;">tcl</code>
+  <code style="position: absolute; top: 260px; left: 650px;"><b>vddk</b></code>
+  <code style="position: absolute; top: 290px; left: 600px;"><b>xz</b></code>
+  <code style="position: absolute; top: 320px; left: 600px;">zero</code>
+</div>

diff --git a/2019-fosdem/2520-about-nbdkit-langs.html b/2019-fosdem/2520-about-nbdkit-langs.html
new file mode 100644 (file)
index 0000000..11f6033
--- /dev/null
+++ b/2019-fosdem/2520-about-nbdkit-langs.html
@@ -0,0 +1,51 @@
+<meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
+<link rel="stylesheet" href="style.css" type="text/css"/>
+<script src="code.js" type="text/javascript"></script>
+
+<h1>nbdkit &mdash; plugins</h1>
+
+<style>
+b {
+    border: 1px solid rgb(204,0,0);
+    background: #eef;
+    padding: 5px;
+    border-radius: 15px;
+}
+</style>
+
+<!-- note: div must have position: relative so child elements position
+     is correct -->
+<div style="background: #ccf; border: 1px solid rgb(204,0,0);
+            position:relative;
+            width: 800px; height: 400px;">
+  <code style="position: absolute; top: 1px; left: 10px;">curl</code>
+  <code style="position: absolute; top: 50px; left: 20px;">data</code>
+  <code style="position: absolute; top: 100px; left: 10px;">ext2</code>
+  <code style="position: absolute; top: 120px; left: 140px;">file</code>
+  <code style="position: absolute; top: 150px; left: 10px;">floppy</code>
+  <code style="position: absolute; top: 200px; left: 20px;">guestfs</code>
+  <code style="position: absolute; top: 250px; left: 10px;">gzip</code>
+  <code style="position: absolute; top: 280px; left: 150px;">iso</code>
+  <code style="position: absolute; top: 350px; left: 10px;">libvirt</code>
+
+  <code style="position: absolute; top: 5px; left: 340px;"><b>lua</b></code>
+  <code style="position: absolute; top: 55px; left: 380px;">memory</code>
+  <code style="position: absolute; top: 105px; left: 340px;">nbd</code>
+  <code style="position: absolute; top: 125px; left: 450px;">null</code>
+  <code style="position: absolute; top: 155px; left: 340px;"><b>ocaml</b></code>
+  <code style="position: absolute; top: 185px; left: 160px;">partitioning</code>
+  <code style="position: absolute; top: 240px; left: 380px;">pattern</code>
+  <code style="position: absolute; top: 300px; left: 320px;"><b>perl</b></code>
+  <code style="position: absolute; top: 340px; left: 280px;"><b>python</b></code>
+
+  <code style="position: absolute; top: 10px; left: 600px;">random</code>
+  <code style="position: absolute; top: 60px; left: 600px;"><b>ruby</b></code>
+  <code style="position: absolute; top: 90px; left: 700px;"><b>sh</b></code>
+  <code style="position: absolute; top: 130px; left: 590px;">split</code>
+  <code style="position: absolute; top: 180px; left: 600px;">streaming</code>
+  <code style="position: absolute; top: 190px; left: 450px;">tar</code>
+  <code style="position: absolute; top: 230px; left: 580px;"><b>tcl</b></code>
+  <code style="position: absolute; top: 260px; left: 650px;">vddk</code>
+  <code style="position: absolute; top: 290px; left: 600px;">xz</code>
+  <code style="position: absolute; top: 320px; left: 600px;">zero</code>
+</div>

diff --git a/2019-fosdem/2530-about-nbdkit-filters.html b/2019-fosdem/2530-about-nbdkit-filters.html
new file mode 100644 (file)
index 0000000..36f2583
--- /dev/null
+++ b/2019-fosdem/2530-about-nbdkit-filters.html
@@ -0,0 +1,64 @@
+<meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
+<link rel="stylesheet" href="style.css" type="text/css"/>
+<script src="code.js" type="text/javascript"></script>
+
+<h1>nbdkit &mdash; filters</h1>
+
+<!-- note: div must have position: relative so child elements position
+     is correct -->
+<div style="background: #cfc; border: 1px solid rgb(204,0,0);
+            position:relative;
+            width: 800px; height: 220px;">
+  <code style="position: absolute; top: 1px; left: 50px;">blocksize</code>
+  <code style="position: absolute; top: 50px; left: 100px;">cache</code>
+  <code style="position: absolute; top: 80px; left: 115px;">cow</code>
+  <code style="position: absolute; top: 140px; left: 10px;">delay</code>
+  <code style="position: absolute; top: 180px; left: 100px;">error</code>
+
+  <code style="position: absolute; top: 10px; left: 400px;">fua</code>
+  <code style="position: absolute; top: 60px; left: 600px;">log</code>
+  <code style="position: absolute; top: 90px; left: 250px;">nozero</code>
+  <code style="position: absolute; top: 130px; left: 530px;">offset</code>
+  <code style="position: absolute; top: 150px; left: 280px;">partition</code>
+  <code style="position: absolute; top: 180px; left: 480px;">truncate</code>
+</div>
+
+<p></p>
+
+<!-- note: div must have position: relative so child elements position
+     is correct -->
+<div style="background: #ccf; border: 2px solid rgb(204,0,0);
+            position:relative;
+            width: 800px; height: 400px;
+            transform: translate(-100px,-50px) scale(0.75,0.75);">
+  <code style="position: absolute; top: 1px; left: 10px;">curl</code>
+  <code style="position: absolute; top: 50px; left: 20px;">data</code>
+  <code style="position: absolute; top: 100px; left: 10px;">ext2</code>
+  <code style="position: absolute; top: 120px; left: 140px;">file</code>
+  <code style="position: absolute; top: 150px; left: 10px;">floppy</code>
+  <code style="position: absolute; top: 200px; left: 20px;">guestfs</code>
+  <code style="position: absolute; top: 250px; left: 10px;">gzip</code>
+  <code style="position: absolute; top: 280px; left: 150px;">iso</code>
+  <code style="position: absolute; top: 350px; left: 10px;">libvirt</code>
+
+  <code style="position: absolute; top: 5px; left: 340px;">lua</code>
+  <code style="position: absolute; top: 55px; left: 380px;">memory</code>
+  <code style="position: absolute; top: 105px; left: 340px;">nbd</code>
+  <code style="position: absolute; top: 125px; left: 450px;">null</code>
+  <code style="position: absolute; top: 155px; left: 340px;">ocaml</code>
+  <code style="position: absolute; top: 185px; left: 160px;">partitioning</code>
+  <code style="position: absolute; top: 240px; left: 380px;">pattern</code>
+  <code style="position: absolute; top: 300px; left: 320px;">perl</code>
+  <code style="position: absolute; top: 340px; left: 280px;">python</code>
+
+  <code style="position: absolute; top: 10px; left: 600px;">random</code>
+  <code style="position: absolute; top: 60px; left: 600px;">ruby</code>
+  <code style="position: absolute; top: 90px; left: 700px;">sh</code>
+  <code style="position: absolute; top: 130px; left: 590px;">split</code>
+  <code style="position: absolute; top: 180px; left: 600px;">streaming</code>
+  <code style="position: absolute; top: 190px; left: 450px;">tar</code>
+  <code style="position: absolute; top: 230px; left: 580px;">tcl</code>
+  <code style="position: absolute; top: 260px; left: 650px;">vddk</code>
+  <code style="position: absolute; top: 290px; left: 600px;">xz</code>
+  <code style="position: absolute; top: 320px; left: 600px;">zero</code>
+</div>

diff --git a/2019-fosdem/2540-about-nbdkit-filters-today.html b/2019-fosdem/2540-about-nbdkit-filters-today.html
new file mode 100644 (file)
index 0000000..5a508e6
--- /dev/null
+++ b/2019-fosdem/2540-about-nbdkit-filters-today.html
@@ -0,0 +1,73 @@
+<meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
+<link rel="stylesheet" href="style.css" type="text/css"/>
+<script src="code.js" type="text/javascript"></script>
+
+<h1>nbdkit &mdash; filters</h1>
+
+<style>
+b {
+    border: 1px solid rgb(204,0,0);
+    background: #eef;
+    padding: 5px;
+    border-radius: 15px;
+}
+</style>
+
+<!-- note: div must have position: relative so child elements position
+     is correct -->
+<div style="background: #cfc; border: 1px solid rgb(204,0,0);
+            position:relative;
+            width: 800px; height: 220px;">
+  <code style="position: absolute; top: 1px; left: 50px;">blocksize</code>
+  <code style="position: absolute; top: 50px; left: 100px;">cache</code>
+  <code style="position: absolute; top: 80px; left: 115px;"><b>cow</b></code>
+  <code style="position: absolute; top: 140px; left: 10px;"><b>delay</b></code>
+  <code style="position: absolute; top: 180px; left: 100px;"><b>error</b></code>
+
+  <code style="position: absolute; top: 10px; left: 400px;">fua</code>
+  <code style="position: absolute; top: 60px; left: 600px;"><b>log</b></code>
+  <code style="position: absolute; top: 90px; left: 250px;">nozero</code>
+  <code style="position: absolute; top: 130px; left: 530px;">offset</code>
+  <code style="position: absolute; top: 150px; left: 280px;">partition</code>
+  <code style="position: absolute; top: 180px; left: 480px;">truncate</code>
+</div>
+
+<p></p>
+
+<!-- note: div must have position: relative so child elements position
+     is correct -->
+<div style="background: #ccf; border: 2px solid rgb(204,0,0);
+            position:relative;
+            width: 800px; height: 400px;
+            transform: translate(-100px,-50px) scale(0.75,0.75);">
+  <code style="position: absolute; top: 1px; left: 10px;">curl</code>
+  <code style="position: absolute; top: 50px; left: 20px;">data</code>
+  <code style="position: absolute; top: 100px; left: 10px;">ext2</code>
+  <code style="position: absolute; top: 120px; left: 140px;">file</code>
+  <code style="position: absolute; top: 150px; left: 10px;">floppy</code>
+  <code style="position: absolute; top: 200px; left: 20px;">guestfs</code>
+  <code style="position: absolute; top: 250px; left: 10px;">gzip</code>
+  <code style="position: absolute; top: 280px; left: 150px;">iso</code>
+  <code style="position: absolute; top: 350px; left: 10px;">libvirt</code>
+
+  <code style="position: absolute; top: 5px; left: 340px;">lua</code>
+  <code style="position: absolute; top: 55px; left: 380px;">memory</code>
+  <code style="position: absolute; top: 105px; left: 340px;">nbd</code>
+  <code style="position: absolute; top: 125px; left: 450px;">null</code>
+  <code style="position: absolute; top: 155px; left: 340px;">ocaml</code>
+  <code style="position: absolute; top: 185px; left: 160px;">partitioning</code>
+  <code style="position: absolute; top: 240px; left: 380px;">pattern</code>
+  <code style="position: absolute; top: 300px; left: 320px;">perl</code>
+  <code style="position: absolute; top: 340px; left: 280px;">python</code>
+
+  <code style="position: absolute; top: 10px; left: 600px;">random</code>
+  <code style="position: absolute; top: 60px; left: 600px;">ruby</code>
+  <code style="position: absolute; top: 90px; left: 700px;">sh</code>
+  <code style="position: absolute; top: 130px; left: 590px;">split</code>
+  <code style="position: absolute; top: 180px; left: 600px;">streaming</code>
+  <code style="position: absolute; top: 190px; left: 450px;">tar</code>
+  <code style="position: absolute; top: 230px; left: 580px;">tcl</code>
+  <code style="position: absolute; top: 260px; left: 650px;">vddk</code>
+  <code style="position: absolute; top: 290px; left: 600px;">xz</code>
+  <code style="position: absolute; top: 320px; left: 600px;">zero</code>
+</div>

diff --git a/2019-fosdem/2550-about-nbdkit-layers.html b/2019-fosdem/2550-about-nbdkit-layers.html
new file mode 100644 (file)
index 0000000..9b114f6
--- /dev/null
+++ b/2019-fosdem/2550-about-nbdkit-layers.html
@@ -0,0 +1,104 @@
+<meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
+<link rel="stylesheet" href="style.css" type="text/css"/>
+<script src="code.js" type="text/javascript"></script>
+
+<h1>nbdkit &mdash; layers</h1>
+
+<style>
+b {
+    border: 1px solid rgb(204,0,0);
+    background: #eef;
+    padding: 5px;
+    border-radius: 15px;
+}
+</style>
+
+<div style="background: #cfc; border: 2px solid rgb(204,0,0);
+            position: absolute; top: 80px; left: 32px;
+            width: 800px; height: 220px;
+            transform: translate(-100px,-25px) scale(0.75,0.75);">
+  <code style="position: absolute; top: 1px; left: 50px;">blocksize</code>
+  <code style="position: absolute; top: 50px; left: 100px;">cache</code>
+  <code style="position: absolute; top: 80px; left: 115px;"><b>cow</b></code>
+  <code style="position: absolute; top: 140px; left: 10px;">delay</code>
+  <code style="position: absolute; top: 180px; left: 100px;">error</code>
+
+  <code style="position: absolute; top: 10px; left: 400px;">fua</code>
+  <code style="position: absolute; top: 60px; left: 600px;">log</code>
+  <code style="position: absolute; top: 90px; left: 250px;">nozero</code>
+  <code style="position: absolute; top: 130px; left: 530px;">offset</code>
+  <code style="position: absolute; top: 150px; left: 280px;">partition</code>
+  <code style="position: absolute; top: 180px; left: 480px;">truncate</code>
+</div>
+
+<div style="background: #cfc; border: 2px solid rgb(204,0,0);
+            position: absolute; top: 250px; left: 32px;
+            width: 800px; height: 220px;
+            transform: translate(-100px,-25px) scale(0.75,0.75);">
+  <code style="position: absolute; top: 1px; left: 50px;">blocksize</code>
+  <code style="position: absolute; top: 50px; left: 100px;">cache</code>
+  <code style="position: absolute; top: 80px; left: 115px;">cow</code>
+  <code style="position: absolute; top: 140px; left: 10px;"><b>delay</b></code>
+  <code style="position: absolute; top: 180px; left: 100px;">error</code>
+
+  <code style="position: absolute; top: 10px; left: 400px;">fua</code>
+  <code style="position: absolute; top: 60px; left: 600px;">log</code>
+  <code style="position: absolute; top: 90px; left: 250px;">nozero</code>
+  <code style="position: absolute; top: 130px; left: 530px;">offset</code>
+  <code style="position: absolute; top: 150px; left: 280px;">partition</code>
+  <code style="position: absolute; top: 180px; left: 480px;">truncate</code>
+</div>
+
+<div style="background: #cfc; border: 2px solid rgb(204,0,0);
+            position: absolute; top: 420px; left: 32px;
+            width: 800px; height: 220px;
+            transform: translate(-100px,-25px) scale(0.75,0.75);">
+  <code style="position: absolute; top: 1px; left: 50px;">blocksize</code>
+  <code style="position: absolute; top: 50px; left: 100px;">cache</code>
+  <code style="position: absolute; top: 80px; left: 115px;">cow</code>
+  <code style="position: absolute; top: 140px; left: 10px;">delay</code>
+  <code style="position: absolute; top: 180px; left: 100px;">error</code>
+
+  <code style="position: absolute; top: 10px; left: 400px;">fua</code>
+  <code style="position: absolute; top: 60px; left: 600px;">log</code>
+  <code style="position: absolute; top: 90px; left: 250px;">nozero</code>
+  <code style="position: absolute; top: 130px; left: 530px;">offset</code>
+  <code style="position: absolute; top: 150px; left: 280px;"><b>partition</b></code>
+  <code style="position: absolute; top: 180px; left: 480px;">truncate</code>
+</div>
+
+<div style="background: #ccf; border: 2px solid rgb(204,0,0);
+            position: absolute; top: 595px; left: 32px;
+            width: 800px; height: 400px;
+            transform: translate(-100px,-50px) scale(0.75,0.75);">
+  <code style="position: absolute; top: 1px; left: 10px;">curl</code>
+  <code style="position: absolute; top: 50px; left: 20px;">data</code>
+  <code style="position: absolute; top: 100px; left: 10px;">ext2</code>
+  <code style="position: absolute; top: 120px; left: 140px;">file</code>
+  <code style="position: absolute; top: 150px; left: 10px;">floppy</code>
+  <code style="position: absolute; top: 200px; left: 20px;">guestfs</code>
+  <code style="position: absolute; top: 250px; left: 10px;">gzip</code>
+  <code style="position: absolute; top: 280px; left: 150px;">iso</code>
+  <code style="position: absolute; top: 350px; left: 10px;">libvirt</code>
+
+  <code style="position: absolute; top: 5px; left: 340px;">lua</code>
+  <code style="position: absolute; top: 55px; left: 380px;">memory</code>
+  <code style="position: absolute; top: 105px; left: 340px;">nbd</code>
+  <code style="position: absolute; top: 125px; left: 450px;">null</code>
+  <code style="position: absolute; top: 155px; left: 340px;">ocaml</code>
+  <code style="position: absolute; top: 185px; left: 160px;">partitioning</code>
+  <code style="position: absolute; top: 240px; left: 380px;">pattern</code>
+  <code style="position: absolute; top: 300px; left: 320px;">perl</code>
+  <code style="position: absolute; top: 340px; left: 280px;">python</code>
+
+  <code style="position: absolute; top: 10px; left: 600px;">random</code>
+  <code style="position: absolute; top: 60px; left: 600px;">ruby</code>
+  <code style="position: absolute; top: 90px; left: 700px;">sh</code>
+  <code style="position: absolute; top: 130px; left: 590px;">split</code>
+  <code style="position: absolute; top: 180px; left: 600px;">streaming</code>
+  <code style="position: absolute; top: 190px; left: 450px;">tar</code>
+  <code style="position: absolute; top: 230px; left: 580px;">tcl</code>
+  <code style="position: absolute; top: 260px; left: 650px;">vddk</code>
+  <code style="position: absolute; top: 290px; left: 600px;"><b>xz</b></code>
+  <code style="position: absolute; top: 320px; left: 600px;">zero</code>
+</div>

diff --git a/2019-fosdem/2560-about-nbdkit-layers-command.html b/2019-fosdem/2560-about-nbdkit-layers-command.html
new file mode 100644 (file)
index 0000000..c8f477e
--- /dev/null
+++ b/2019-fosdem/2560-about-nbdkit-layers-command.html
@@ -0,0 +1,127 @@
+<meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
+<link rel="stylesheet" href="style.css" type="text/css"/>
+<script src="code.js" type="text/javascript"></script>
+
+<h1>nbdkit &mdash; layers</h1>
+
+<style>
+b {
+    border: 1px solid rgb(204,0,0);
+    background: #eef;
+    padding: 5px;
+    border-radius: 15px;
+}
+</style>
+
+<div style="background: #cfc; border: 2px solid rgb(204,0,0);
+            position: absolute; top: 80px; left: 32px;
+            width: 800px; height: 220px;
+            transform: translate(-100px,-25px) scale(0.75,0.75);">
+  <code style="position: absolute; top: 1px; left: 50px;">blocksize</code>
+  <code style="position: absolute; top: 50px; left: 100px;">cache</code>
+  <code style="position: absolute; top: 80px; left: 115px;"><b>cow</b></code>
+  <code style="position: absolute; top: 140px; left: 10px;">delay</code>
+  <code style="position: absolute; top: 180px; left: 100px;">error</code>
+
+  <code style="position: absolute; top: 10px; left: 400px;">fua</code>
+  <code style="position: absolute; top: 60px; left: 600px;">log</code>
+  <code style="position: absolute; top: 90px; left: 250px;">nozero</code>
+  <code style="position: absolute; top: 130px; left: 530px;">offset</code>
+  <code style="position: absolute; top: 150px; left: 280px;">partition</code>
+  <code style="position: absolute; top: 180px; left: 480px;">truncate</code>
+</div>
+
+<div style="background: #cfc; border: 2px solid rgb(204,0,0);
+            position: absolute; top: 250px; left: 32px;
+            width: 800px; height: 220px;
+            transform: translate(-100px,-25px) scale(0.75,0.75);">
+  <code style="position: absolute; top: 1px; left: 50px;">blocksize</code>
+  <code style="position: absolute; top: 50px; left: 100px;">cache</code>
+  <code style="position: absolute; top: 80px; left: 115px;">cow</code>
+  <code style="position: absolute; top: 140px; left: 10px;"><b>delay</b></code>
+  <code style="position: absolute; top: 180px; left: 100px;">error</code>
+
+  <code style="position: absolute; top: 10px; left: 400px;">fua</code>
+  <code style="position: absolute; top: 60px; left: 600px;">log</code>
+  <code style="position: absolute; top: 90px; left: 250px;">nozero</code>
+  <code style="position: absolute; top: 130px; left: 530px;">offset</code>
+  <code style="position: absolute; top: 150px; left: 280px;">partition</code>
+  <code style="position: absolute; top: 180px; left: 480px;">truncate</code>
+</div>
+
+<div style="background: #cfc; border: 2px solid rgb(204,0,0);
+            position: absolute; top: 420px; left: 32px;
+            width: 800px; height: 220px;
+            transform: translate(-100px,-25px) scale(0.75,0.75);">
+  <code style="position: absolute; top: 1px; left: 50px;">blocksize</code>
+  <code style="position: absolute; top: 50px; left: 100px;">cache</code>
+  <code style="position: absolute; top: 80px; left: 115px;">cow</code>
+  <code style="position: absolute; top: 140px; left: 10px;">delay</code>
+  <code style="position: absolute; top: 180px; left: 100px;">error</code>
+
+  <code style="position: absolute; top: 10px; left: 400px;">fua</code>
+  <code style="position: absolute; top: 60px; left: 600px;">log</code>
+  <code style="position: absolute; top: 90px; left: 250px;">nozero</code>
+  <code style="position: absolute; top: 130px; left: 530px;">offset</code>
+  <code style="position: absolute; top: 150px; left: 280px;"><b>partition</b></code>
+  <code style="position: absolute; top: 180px; left: 480px;">truncate</code>
+</div>
+
+<div style="background: #ccf; border: 2px solid rgb(204,0,0);
+            position: absolute; top: 595px; left: 32px;
+            width: 800px; height: 400px;
+            transform: translate(-100px,-50px) scale(0.75,0.75);">
+  <code style="position: absolute; top: 1px; left: 10px;">curl</code>
+  <code style="position: absolute; top: 50px; left: 20px;">data</code>
+  <code style="position: absolute; top: 100px; left: 10px;">ext2</code>
+  <code style="position: absolute; top: 120px; left: 140px;">file</code>
+  <code style="position: absolute; top: 150px; left: 10px;">floppy</code>
+  <code style="position: absolute; top: 200px; left: 20px;">guestfs</code>
+  <code style="position: absolute; top: 250px; left: 10px;">gzip</code>
+  <code style="position: absolute; top: 280px; left: 150px;">iso</code>
+  <code style="position: absolute; top: 350px; left: 10px;">libvirt</code>
+
+  <code style="position: absolute; top: 5px; left: 340px;">lua</code>
+  <code style="position: absolute; top: 55px; left: 380px;">memory</code>
+  <code style="position: absolute; top: 105px; left: 340px;">nbd</code>
+  <code style="position: absolute; top: 125px; left: 450px;">null</code>
+  <code style="position: absolute; top: 155px; left: 340px;">ocaml</code>
+  <code style="position: absolute; top: 185px; left: 160px;">partitioning</code>
+  <code style="position: absolute; top: 240px; left: 380px;">pattern</code>
+  <code style="position: absolute; top: 300px; left: 320px;">perl</code>
+  <code style="position: absolute; top: 340px; left: 280px;">python</code>
+
+  <code style="position: absolute; top: 10px; left: 600px;">random</code>
+  <code style="position: absolute; top: 60px; left: 600px;">ruby</code>
+  <code style="position: absolute; top: 90px; left: 700px;">sh</code>
+  <code style="position: absolute; top: 130px; left: 590px;">split</code>
+  <code style="position: absolute; top: 180px; left: 600px;">streaming</code>
+  <code style="position: absolute; top: 190px; left: 450px;">tar</code>
+  <code style="position: absolute; top: 230px; left: 580px;">tcl</code>
+  <code style="position: absolute; top: 260px; left: 650px;">vddk</code>
+  <code style="position: absolute; top: 290px; left: 600px;"><b>xz</b></code>
+  <code style="position: absolute; top: 320px; left: 600px;">zero</code>
+</div>
+
+<pre
+style="position: absolute;
+       top: 80px;
+       left: 650px;"
+>nbdkit --filter=cow \</pre>
+<pre
+style="position: absolute;
+       top: 250px;
+       left: 650px;"
+>       --filter=delay \</pre>
+<pre
+style="position: absolute;
+       top: 420px;
+       left: 650px;"
+>       --filter=partition \</pre>
+<pre
+style="position: absolute;
+       top: 595px;
+       left: 650px;"
+>       xz file.xz \<br/>
+       partition=1 \<br/>
+       rdelay=20ms</pre>

diff --git a/2019-fosdem/3000-vmware.d/mystery.vmdk b/2019-fosdem/3000-vmware.d/mystery.vmdk
new file mode 100755 (executable)
index 0000000..8790aba
Binary files /dev/null and b/2019-fosdem/3000-vmware.d/mystery.vmdk differ

diff --git a/2019-fosdem/3000-vmware.term b/2019-fosdem/3000-vmware.term
new file mode 100755 (executable)
index 0000000..5524760
--- /dev/null
+++ b/2019-fosdem/3000-vmware.term
@@ -0,0 +1,19 @@
+#!/bin/bash -
+
+source functions
+
+# History.
+remember 'ls'
+remember 'LD_LIBRARY_PATH=~/tmp/vddk/vmware-vix-disklib-distrib/lib64 nbdkit vddk file=$PWD/mystery.vmdk'
+remember 'ps ax | grep nbdkit'
+remember 'sudo nbd-client -b 512 localhost /dev/nbd0'
+remember 'ls -l /dev/nbd0*'
+remember 'sudo mount /dev/nbd0p2 /tmp/mnt'
+remember 'ls -l /tmp/mnt'
+
+echo "VMware (VDDK)"
+
+./restore
+pushd 3000-vmware.d >/dev/null
+terminal
+popd >/dev/null

diff --git a/2019-fosdem/3500-partitioning.d/.stamp b/2019-fosdem/3500-partitioning.d/.stamp
new file mode 100644 (file)
index 0000000..e69de29

diff --git a/2019-fosdem/3500-partitioning.term b/2019-fosdem/3500-partitioning.term
new file mode 100755 (executable)
index 0000000..4f216dc
--- /dev/null
+++ b/2019-fosdem/3500-partitioning.term
@@ -0,0 +1,21 @@
+#!/bin/bash -
+
+source functions
+
+# History.
+remember 'ls'
+remember 'nbdkit partitioning boot.img mbr-id=0x82 swap.img mbr-id=0x83 root.img'
+remember 'sudo nbd-client -b 512 localhost /dev/nbd0'
+remember 'ls -l /dev/nbd0*'
+remember 'sudo fdisk -l /dev/nbd0'
+remember 'sudo mount /dev/nbd0p3 /tmp/mnt'
+remember 'ls -l /tmp/mnt'
+remember 'cat /tmp/mnt/etc/fedora-release'
+remember 'touch /tmp/mnt/hello-fosdem'
+
+echo "Create partitions"
+
+./restore
+pushd 3500-partitioning.d >/dev/null
+terminal
+popd >/dev/null

diff --git a/2019-fosdem/4000-giant.term b/2019-fosdem/4000-giant.term
new file mode 100755 (executable)
index 0000000..b55eafb
--- /dev/null
+++ b/2019-fosdem/4000-giant.term
@@ -0,0 +1,17 @@
+#!/bin/bash -
+
+source functions
+
+# History.
+remember 'nbdkit memory size=$(( 2**63 - 1 ))'
+remember 'sudo nbd-client -b 512 localhost /dev/nbd0'
+remember 'sudo fdisk /dev/nbd0'
+remember 'sudo gdisk /dev/nbd0'
+remember 'sudo mkfs.btrfs -K /dev/nbd0p1'
+remember 'sudo mount /dev/nbd0p1 /tmp/mnt'
+remember 'df -h /tmp/mnt'
+
+echo "Giant disks"
+
+./restore
+terminal

diff --git a/2019-fosdem/4500-testing.html b/2019-fosdem/4500-testing.html
new file mode 100644 (file)
index 0000000..a4cd003
--- /dev/null
+++ b/2019-fosdem/4500-testing.html
@@ -0,0 +1,72 @@
+<meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
+<link rel="stylesheet" href="style.css" type="text/css"/>
+<script src="code.js" type="text/javascript"></script>
+
+<h1>Useful nbdkit plugins and filters for testing filesystems</h1>
+
+<style>
+b {
+    border: 1px solid rgb(204,0,0);
+    background: #eef;
+    padding: 5px;
+    border-radius: 15px;
+}
+</style>
+
+<!-- note: div must have position: relative so child elements position
+     is correct -->
+<div style="background: #ccf; border: 1px solid rgb(204,0,0);
+            position:relative;
+            width: 800px; height: 400px;">
+  <code style="position: absolute; top: 1px; left: 10px;">curl</code>
+  <code style="position: absolute; top: 50px; left: 20px;"><b>data</b></code>
+  <code style="position: absolute; top: 100px; left: 10px;">ext2</code>
+  <code style="position: absolute; top: 120px; left: 140px;"><b>file</b></code>
+  <code style="position: absolute; top: 150px; left: 10px;"><b>floppy</b></code>
+  <code style="position: absolute; top: 200px; left: 20px;">guestfs</code>
+  <code style="position: absolute; top: 250px; left: 10px;">gzip</code>
+  <code style="position: absolute; top: 280px; left: 150px;"><b>iso</b></code>
+  <code style="position: absolute; top: 350px; left: 10px;">libvirt</code>
+
+  <code style="position: absolute; top: 5px; left: 340px;">lua</code>
+  <code style="position: absolute; top: 55px; left: 380px;"><b>memory</b></code>
+  <code style="position: absolute; top: 105px; left: 340px;">nbd</code>
+  <code style="position: absolute; top: 125px; left: 450px;">null</code>
+  <code style="position: absolute; top: 155px; left: 340px;">ocaml</code>
+  <code style="position: absolute; top: 185px; left: 160px;">partitioning</code>
+  <code style="position: absolute; top: 240px; left: 380px;">pattern</code>
+  <code style="position: absolute; top: 300px; left: 320px;">perl</code>
+  <code style="position: absolute; top: 340px; left: 280px;">python</code>
+
+  <code style="position: absolute; top: 10px; left: 600px;">random</code>
+  <code style="position: absolute; top: 60px; left: 600px;">ruby</code>
+  <code style="position: absolute; top: 90px; left: 700px;"><b>sh</b></code>
+  <code style="position: absolute; top: 130px; left: 590px;">split</code>
+  <code style="position: absolute; top: 180px; left: 600px;">streaming</code>
+  <code style="position: absolute; top: 190px; left: 450px;">tar</code>
+  <code style="position: absolute; top: 230px; left: 580px;">tcl</code>
+  <code style="position: absolute; top: 260px; left: 650px;">vddk</code>
+  <code style="position: absolute; top: 290px; left: 600px;">xz</code>
+  <code style="position: absolute; top: 320px; left: 600px;">zero</code>
+</div>
+
+<p></p>
+
+<!-- note: div must have position: relative so child elements position
+     is correct -->
+<div style="background: #cfc; border: 1px solid rgb(204,0,0);
+            position:relative;
+            width: 800px; height: 220px;">
+  <code style="position: absolute; top: 1px; left: 50px;">blocksize</code>
+  <code style="position: absolute; top: 50px; left: 100px;">cache</code>
+  <code style="position: absolute; top: 80px; left: 115px;">cow</code>
+  <code style="position: absolute; top: 140px; left: 10px;"><b>delay</b></code>
+  <code style="position: absolute; top: 180px; left: 100px;"><b>error</b></code>
+
+  <code style="position: absolute; top: 10px; left: 400px;">fua</code>
+  <code style="position: absolute; top: 60px; left: 600px;"><b>log</b></code>
+  <code style="position: absolute; top: 90px; left: 250px;">nozero</code>
+  <code style="position: absolute; top: 130px; left: 530px;">offset</code>
+  <code style="position: absolute; top: 150px; left: 280px;">partition</code>
+  <code style="position: absolute; top: 180px; left: 480px;">truncate</code>
+</div>

diff --git a/2019-fosdem/4600-testing-delay.html b/2019-fosdem/4600-testing-delay.html
new file mode 100644 (file)
index 0000000..e0ba6c5
--- /dev/null
+++ b/2019-fosdem/4600-testing-delay.html
@@ -0,0 +1,47 @@
+<meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
+<link rel="stylesheet" href="style.css" type="text/css"/>
+<script src="code.js" type="text/javascript"></script>
+
+<h1>Useful nbdkit filters: the delay filter</h1>
+
+<style>
+b {
+    border: 1px solid rgb(204,0,0);
+    background: #eef;
+    padding: 5px;
+    border-radius: 15px;
+}
+</style>
+
+<pre>
+nbdkit --filter=delay <i>[...]</i> rdelay=1
+
+nbdkit --filter=delay <i>[...]</i> rdelay=100ms wdelay=50ms
+</pre>
+
+<ul>
+<li> Injects delays into requests.
+<li> Delays can be specified in seconds or milliseconds.
+<li> <code>rdelay</code>: read operations
+<li> <code>wdelay</code>: write or zero operations
+<li> Requests handled in parallel are delayed in parallel, as expected.
+</ul>
+
+<!-- note: div must have position: relative so child elements position
+     is correct -->
+<div style="background: #cfc; border: 1px solid rgb(204,0,0);
+            position:relative;
+            width: 800px; height: 220px;">
+  <code style="position: absolute; top: 1px; left: 50px;">blocksize</code>
+  <code style="position: absolute; top: 50px; left: 100px;">cache</code>
+  <code style="position: absolute; top: 80px; left: 115px;">cow</code>
+  <code style="position: absolute; top: 140px; left: 10px;"><b>delay</b></code>
+  <code style="position: absolute; top: 180px; left: 100px;">error</code>
+
+  <code style="position: absolute; top: 10px; left: 400px;">fua</code>
+  <code style="position: absolute; top: 60px; left: 600px;">log</code>
+  <code style="position: absolute; top: 90px; left: 250px;">nozero</code>
+  <code style="position: absolute; top: 130px; left: 530px;">offset</code>
+  <code style="position: absolute; top: 150px; left: 280px;">partition</code>
+  <code style="position: absolute; top: 180px; left: 480px;">truncate</code>
+</div>

diff --git a/2019-fosdem/4700-testing-error.html b/2019-fosdem/4700-testing-error.html
new file mode 100644 (file)
index 0000000..36e90f1
--- /dev/null
+++ b/2019-fosdem/4700-testing-error.html
@@ -0,0 +1,48 @@
+<meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
+<link rel="stylesheet" href="style.css" type="text/css"/>
+<script src="code.js" type="text/javascript"></script>
+
+<h1>Useful nbdkit filters: the error filter</h1>
+
+<style>
+b {
+    border: 1px solid rgb(204,0,0);
+    background: #eef;
+    padding: 5px;
+    border-radius: 15px;
+}
+</style>
+
+<pre>
+nbdkit --filter=error <i>[...]</i> error=EIO error-rate=10%
+
+nbdkit --filter=error <i>[...]</i> error-rate=100% error-file=/tmp/inject
+</pre>
+
+<ul>
+<li> Errors can be injected randomly with a uniform distribution.
+<li> More usefully you can trigger errors from the presence of
+an error file.
+<li> NBD protocol only supports: <code>EPERM</code>, <code>EIO</code>,
+<code>ENOMEM</code>, <code>EINVAL</code>, <code>ENOSPC</code> or
+<code>ESHUTDOWN</code>.
+</ul>
+
+<!-- note: div must have position: relative so child elements position
+     is correct -->
+<div style="background: #cfc; border: 1px solid rgb(204,0,0);
+            position:relative;
+            width: 800px; height: 220px;">
+  <code style="position: absolute; top: 1px; left: 50px;">blocksize</code>
+  <code style="position: absolute; top: 50px; left: 100px;">cache</code>
+  <code style="position: absolute; top: 80px; left: 115px;">cow</code>
+  <code style="position: absolute; top: 140px; left: 10px;">delay</code>
+  <code style="position: absolute; top: 180px; left: 100px;"><b>error</b></code>
+
+  <code style="position: absolute; top: 10px; left: 400px;">fua</code>
+  <code style="position: absolute; top: 60px; left: 600px;">log</code>
+  <code style="position: absolute; top: 90px; left: 250px;">nozero</code>
+  <code style="position: absolute; top: 130px; left: 530px;">offset</code>
+  <code style="position: absolute; top: 150px; left: 280px;">partition</code>
+  <code style="position: absolute; top: 180px; left: 480px;">truncate</code>
+</div>

diff --git a/2019-fosdem/4800-testing-log.html b/2019-fosdem/4800-testing-log.html
new file mode 100644 (file)
index 0000000..13f3f1a
--- /dev/null
+++ b/2019-fosdem/4800-testing-log.html
@@ -0,0 +1,51 @@
+<meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
+<link rel="stylesheet" href="style.css" type="text/css"/>
+<script src="code.js" type="text/javascript"></script>
+
+<h1>Useful nbdkit filters: the log filter</h1>
+
+<style>
+b {
+    border: 1px solid rgb(204,0,0);
+    background: #eef;
+    padding: 5px;
+    border-radius: 15px;
+}
+</style>
+
+<pre>
+nbdkit --filter=log <i>[...]</i> logfile=/tmp/log
+</pre>
+
+<pre>
+2018-11-16 10:55:19.411474 connection=2 Connect size=0x6400000 write=1 flush=0 rotational=0 trim=1 zero=1 fua=0
+2018-11-16 10:55:19.478631 connection=2 Read id=1 offset=0x0 count=0x200 ...
+2018-11-16 10:55:19.478664 connection=2 ...Read id=1 return=0 (Success)
+2018-11-16 10:55:20.844193 connection=2 Read id=2 offset=0x0 count=0x1000 ...
+2018-11-16 10:55:20.844234 connection=2 ...Read id=2 return=0 (Success)
+2018-11-16 10:55:20.844767 connection=2 Read id=3 offset=0x1000 count=0x1000 ...
+2018-11-16 10:55:20.844823 connection=2 ...Read id=3 return=0 (Success)
+2018-11-16 10:55:21.446872 connection=2 Read id=4 offset=0x63f0000 count=0x1000 ...
+2018-11-16 10:55:21.446930 connection=2 ...Read id=4 return=0 (Success)
+2018-11-16 10:55:21.447175 connection=2 Read id=5 offset=0x63fe000 count=0x1000 ...
+2018-11-16 10:55:21.447197 connection=2 ...Read id=5 return=0 (Success)
+</pre>
+
+<!-- note: div must have position: relative so child elements position
+     is correct -->
+<div style="background: #cfc; border: 1px solid rgb(204,0,0);
+            position:relative;
+            width: 800px; height: 220px;">
+  <code style="position: absolute; top: 1px; left: 50px;">blocksize</code>
+  <code style="position: absolute; top: 50px; left: 100px;">cache</code>
+  <code style="position: absolute; top: 80px; left: 115px;">cow</code>
+  <code style="position: absolute; top: 140px; left: 10px;">delay</code>
+  <code style="position: absolute; top: 180px; left: 100px;">error</code>
+
+  <code style="position: absolute; top: 10px; left: 400px;">fua</code>
+  <code style="position: absolute; top: 60px; left: 600px;"><b>log</b></code>
+  <code style="position: absolute; top: 90px; left: 250px;">nozero</code>
+  <code style="position: absolute; top: 130px; left: 530px;">offset</code>
+  <code style="position: absolute; top: 150px; left: 280px;">partition</code>
+  <code style="position: absolute; top: 180px; left: 480px;">truncate</code>
+</div>

diff --git a/2019-fosdem/4900-testing-log-2.html b/2019-fosdem/4900-testing-log-2.html
new file mode 100644 (file)
index 0000000..d32a407
--- /dev/null
+++ b/2019-fosdem/4900-testing-log-2.html
@@ -0,0 +1,12 @@
+<meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
+<link rel="stylesheet" href="style.css" type="text/css"/>
+<script src="code.js" type="text/javascript"></script>
+
+<h1>Useful nbdkit filters: the log filter</h1>
+
+<pre>
+nbdkit --filter=log <i>[...]</i> logfile=/tmp/log
+</pre>
+
+<!--<img src="4900-testing-log-2.svg" width="900" />-->
+<img src="4900-testing-log-2.svg.png" />

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new file mode 100644 (file)
index 0000000..bb3e6ee
--- /dev/null
+++ b/2019-fosdem/4900-testing-log-2.svg
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+    <path
+       style="fill:none;stroke:#333333;stroke-width:0.5;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:4;stroke-dasharray:none;stroke-opacity:1;marker-end:url(#Arrow1Lend)"
+       d="m 62.933034,42.433036 c 0,0 4.481099,1.486883 8.228829,4.153278 3.74773,2.666395 6.76209,6.512303 8.591112,9.642851 3.678143,6.295498 6.425596,25.513394 6.425596,25.513394"
+       id="path4591"
+       inkscape:connector-curvature="0"
+       sodipodi:nodetypes="cssc" />
+    <path
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+       inkscape:connector-curvature="0"
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+</svg>

diff --git a/2019-fosdem/4900-testing-log-2.svg.png b/2019-fosdem/4900-testing-log-2.svg.png
new file mode 100644 (file)
index 0000000..95daba5
Binary files /dev/null and b/2019-fosdem/4900-testing-log-2.svg.png differ

diff --git a/2019-fosdem/5000-single-fs-next b/2019-fosdem/5000-single-fs-next
new file mode 100755 (executable)
index 0000000..9375f8d
--- /dev/null
+++ b/2019-fosdem/5000-single-fs-next
@@ -0,0 +1,19 @@
+#!/bin/bash -
+
+source functions
+
+# History.
+remember 'nbdkit --filter=log --filter=delay memory size=64M logfile=/tmp/log rdelay=50ms wdelay=50ms'
+remember './nbdview.tcl /tmp/log 67108864 &'
+remember 'sudo nbd-client -b 512 localhost /dev/nbd0'
+remember 'sudo fdisk /dev/nbd0'
+remember 'sudo mkfs -t ext4 /dev/nbd0p1'
+remember 'sudo mount /dev/nbd0p1 /tmp/mnt'
+remember 'sudo chown rjones /tmp/mnt/'
+
+echo "Visualising a single filesystem"
+
+./restore
+pushd nbdview >/dev/null
+terminal
+popd >/dev/null

diff --git a/2019-fosdem/5000-single-fs.sh b/2019-fosdem/5000-single-fs.sh
new file mode 100755 (executable)
index 0000000..be1bfd4
--- /dev/null
+++ b/2019-fosdem/5000-single-fs.sh
@@ -0,0 +1,4 @@
+#!/bin/bash -
+
+xfce4-terminal --disable-server \
+               -x ./5000-single-fs-next

diff --git a/2019-fosdem/5500-raid-next b/2019-fosdem/5500-raid-next
new file mode 100755 (executable)
index 0000000..2c3d135
--- /dev/null
+++ b/2019-fosdem/5500-raid-next
@@ -0,0 +1,21 @@
+#!/bin/bash -
+
+source functions
+
+# History.
+remember 'i=1; rm -f sock$i; nbdkit -U sock$i --filter=error --filter=log --filter=delay memory size=64M logfile=log$i error-rate=100% error-file=error$i rdelay=50ms wdelay=50ms'
+remember './nbdraid.tcl 5 67108864 log%s error%s &'
+remember 'i=1; sudo nbd-client -unix sock$i -b 512 /dev/nbd$((i-1))'
+remember 'sudo mdadm --create /dev/md0 --level=5 --raid-devices=4 /dev/nbd{0,1,2,3} --spare-devices=1 /dev/nbd4'
+remember 'sudo fdisk /dev/md0'
+remember 'sudo mkfs -t ext4 /dev/md0p1'
+remember 'sudo mount /dev/md0p1 /tmp/mnt'
+remember 'sudo chown rjones /tmp/mnt/'
+
+echo "Visualising RAID"
+
+./restore
+pushd nbdview >/dev/null
+rm -f sock? error? log?
+terminal
+popd >/dev/null

diff --git a/2019-fosdem/5500-raid.sh b/2019-fosdem/5500-raid.sh
new file mode 100755 (executable)
index 0000000..d333b36
--- /dev/null
+++ b/2019-fosdem/5500-raid.sh
@@ -0,0 +1,4 @@
+#!/bin/bash -
+
+xfce4-terminal --disable-server \
+               -x ./5500-raid-next

diff --git a/2019-fosdem/NOTES b/2019-fosdem/NOTES
new file mode 100644 (file)
index 0000000..e69de29

diff --git a/2019-fosdem/bashrc b/2019-fosdem/bashrc
new file mode 100644 (file)
index 0000000..4c6a3c6
--- /dev/null
+++ b/2019-fosdem/bashrc
@@ -0,0 +1,17 @@
+# -*- shell-script -*-
+
+# Colour ls.
+if [ -f /etc/profile.d/colorls.sh ]; then . /etc/profile.d/colorls.sh; fi
+
+# Fancy prompt colours (see
+# https://wiki.archlinux.org/index.php/Color_Bash_Prompt)
+promptcol='\e[0;32m'      ;# colour for the prompt
+commandcol='\e[1;31m'     ;# colour for the typed command
+outputcol='\e[0m'         ;# colour for command output
+
+export PS1="\n\[$promptcol\]\$ \[$commandcol\]"
+
+trap 'echo -ne "$outputcol"' DEBUG
+
+# Load key bindings (if any).
+bind -f $talkdir/bindings

diff --git a/2019-fosdem/code.js b/2019-fosdem/code.js
new file mode 100644 (file)
index 0000000..e69de29

diff --git a/2019-fosdem/functions b/2019-fosdem/functions
new file mode 100644 (file)
index 0000000..d5347e7
--- /dev/null
+++ b/2019-fosdem/functions
@@ -0,0 +1,43 @@
+# -*- shell-script -*-
+# This creates some standard functions.  See also $talkdir/bashrc
+# which runs in the same bash context as the terminal.
+
+# Place any local environment variables and settings in "local".
+if [ -f local ]; then source local; fi
+
+# Environment variables.
+export HISTFILE=$talkdir/history
+export PATH=$talkdir:$PATH
+export EDITOR="emacs -nw"
+
+# Ditch libvirt for stability :-(
+export LIBGUESTFS_BACKEND=direct
+
+# remember <command> <args ...>
+#
+# This function does two things: (1) It adds the command and arguments
+# to the shell history, so that commands can be recalled using up
+# arrow or reverse search.  (2) It makes a function key recall the
+# command.  The first command is assigned to F2, the second to F3 and
+# so forth.
+
+rm -f $HISTFILE
+touch $HISTFILE
+rm -f $talkdir/bindings
+touch bindings
+
+fnum=2
+keys=(- OP OQ OR OS '[15~' '[17~' '[18~' '[19~' '[20~' '[21~')
+
+remember ()
+{
+    echo "$@" >> $HISTFILE
+    echo \"\\e${keys[$fnum]}\":\"\\C-k \\C-u"$@"\" >> $talkdir/bindings
+    ((fnum++))
+}
+
+terminal ()
+{
+    chmod -w $HISTFILE
+    /bin/bash --rcfile $talkdir/bashrc "$@"
+}

diff --git a/2019-fosdem/restore b/2019-fosdem/restore
new file mode 100755 (executable)
index 0000000..ee22354
--- /dev/null
+++ b/2019-fosdem/restore
@@ -0,0 +1,20 @@
+#!/bin/bash -
+# Unmount everything.
+
+sudo umount /tmp/mnt         >&/dev/null
+
+sudo mdadm --stop /dev/md0   >&/dev/null
+
+sudo nbd-client -d /dev/nbd0 >&/dev/null
+sudo nbd-client -d /dev/nbd1 >&/dev/null
+sudo nbd-client -d /dev/nbd2 >&/dev/null
+sudo nbd-client -d /dev/nbd3 >&/dev/null
+sudo nbd-client -d /dev/nbd4 >&/dev/null
+
+sudo kpartx -d /dev/loop0    >&/dev/null
+sudo losetup -d /dev/loop0   >&/dev/null
+
+killall nbdkit               >&/dev/null
+killall wish                 >&/dev/null
+
+exit 0

diff --git a/2019-fosdem/run b/2019-fosdem/run
new file mode 100755 (executable)
index 0000000..fe4a70e
--- /dev/null
+++ b/2019-fosdem/run
@@ -0,0 +1,55 @@
+#!/bin/bash -
+# Run the talk.
+
+set -e
+
+# Avoid GNOME keyring stupidity
+export GNOME_KEYRING_CONTROL=
+export GNOME_KEYRING_PID=
+
+# No proxy.
+#unset http_proxy
+#unset https_proxy
+#unset ftp_proxy
+
+# Check the files are precreated.
+if [ ! -f 1000-loopback-mounting.d/fedora-29.img ]; then
+    pushd 1000-loopback-mounting.d
+    virt-builder fedora-29
+    popd
+fi
+
+if [ ! -f 2000-xz-compressed.d/Fedora-Cloud-Base-29-1.2.x86_64.raw.xz ]; then
+    pushd 2000-xz-compressed.d
+    wget https://download.fedoraproject.org/pub/fedora/linux/releases/29/Cloud/x86_64/images/Fedora-Cloud-Base-29-1.2.x86_64.raw.xz
+    popd
+fi
+
+if [ ! -f 3500-partitioning.d/boot.img ]; then
+    guestfish --ro -a 1000-loopback-mounting.d/fedora-29.img -i <<EOF
+download /dev/sda2 3500-partitioning.d/boot.img
+download /dev/sda3 3500-partitioning.d/swap.img
+# Save to hidden file.
+download /dev/sda4 3500-partitioning.d/.root.img
+EOF
+fi
+
+# Restore original root.img before each run.
+if ! cmp -s 3500-partitioning.d/{.root.img,root.img}; then
+    cp 3500-partitioning.d/{.root.img,root.img}
+fi
+
+# Create mountpoint.
+mkdir -p /tmp/mnt
+
+# Check nbd module is loaded.
+sudo modprobe nbd
+
+# Remove any old mounts, nbdkit processes etc.
+./restore
+
+# Run techtalk.
+#techtalk-pse
+~/d/techtalk-pse/techtalk-pse
+
+./restore

diff --git a/2019-fosdem/style.css b/2019-fosdem/style.css
new file mode 100644 (file)
index 0000000..aa57add
--- /dev/null
+++ b/2019-fosdem/style.css
@@ -0,0 +1,58 @@
+/* Red Hat red is rgb(204,0,0). */
+
+body {
+    background: url(redhat.png) no-repeat;
+    background-position: 98% 0;
+    /* font-size: 28pt; */ /* For max */
+    font-size: 20pt; /* For 1024x768 */
+    /* font-family: liberation, helvetica; */
+    font-family: helvetica;
+}
+
+body td, body th { /* why?? */
+    font-size: 24pt;
+    padding-bottom: 8px;
+}
+
+h1 {
+    color: rgb(204,0,0);
+    /*font-size: 48px;*/
+    font-size: 40px;
+    top: 8;
+    left: 0;
+    border-bottom: 2px solid rgb(204,0,0);
+}
+
+b {
+    color: rgb(204,0,0);
+}
+
+div#titlepage {
+    margin-top: 100px;
+    text-align: center;
+}
+
+div#titlepage p.title {
+    color: rgb(204,0,0);
+    font-weight: bold;
+    font-size: 48px;
+}
+
+div#titlepage author {
+    font-size: 36px;
+}
+
+/* Code */
+pre.code {
+    margin-left: 1em;
+    background: #eee;
+}
+
+code {
+    color: rgb(204,0,0);
+}
+
+/* Bullet points */
+li {
+    padding-bottom: 16px;
+}