The suggested replacement for the deprecated 'qemu-nbd -P' refers to 'file.backing.opt' instead of 'file.file.opt'; using the example verbatim results in: qemu-nbd: Failed to blk_new_open 'driver=raw,offset=1m,size=100m,file.driver=qcow2,file.backing.driver=file,file.backing.filename=file4': A block device must be specified for "file" Correct this text, prior to actually finishing the deprecation process. Fixes: 0ae2d54645eb Reported-by: Max Reitz <mreitz(a)redhat.com&gt; Signed-off-by: Eric Blake <eblake(a)redhat.com&gt; Message-Id: <20200123164650.1741798-2-eblake(a)redhat.com&gt; Reviewed-by: Ján Tomko <jtomko(a)redhat.com&gt; --- qemu-deprecated.texi | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/qemu-deprecated.texi b/qemu-deprecated.texi index ea3e10bde398..c8ee68a4663a 100644 --- a/qemu-deprecated.texi +++ b/qemu-deprecated.texi @@ -329,7 +329,7 @@ top of any other existing blockdev. For example, if partition 1 is can be rewritten as: -@code{qemu-nbd -t --image-opts driver=raw,offset=1M,size=100M,file.driver=qcow2,file.backing.driver=file,file.backing.filename=file.qcow2} +@code{qemu-nbd -t --image-opts driver=raw,offset=1M,size=100M,file.driver=qcow2,file.file.driver=file,file.file.filename=file.qcow2} Alternatively, the @code{nbdkit} project provides a more powerful partition filter on top of its nbd plugin, which can be used to select -- 2.24.1