From: Richard W.M. Jones <rjones@redhat.com>
Date: Tue, 29 Jan 2019 12:33:41 +0000 (+0000)
Subject: Use xz filter instead of plugin, but apply cow layer.
X-Git-Url: http://git.annexia.org/?p=libguestfs-talks.git;a=commitdiff_plain;h=6055bab4a6c57538f6725d876a26df924170ea91

Use xz filter instead of plugin, but apply cow layer.

xz filter in readonly mode is broken!
---

diff --git a/2019-fosdem/3000-xz-compressed.term b/2019-fosdem/3000-xz-compressed.term
index ba43450..37d6fc0 100755
--- a/2019-fosdem/3000-xz-compressed.term
+++ b/2019-fosdem/3000-xz-compressed.term
@@ -7,7 +7,7 @@ export title="XZ compressed image"
 
 # 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 'nbdkit --filter=cow --filter=xz file 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'