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doc: describe usage of virt-make-fs for testing

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We want tests to avoid the usage of sudo. Describe that virt-make-fs can
generate disk images without being root.

Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
This commit is contained in:
Heinrich Schuchardt 2022-10-08 01:19:22 +02:00
parent 627b0ba397
commit 88991b965f
1 changed files with 19 additions and 0 deletions
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doc/develop/py_testing.rst
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@ -47,6 +47,7 @@ will be required. The following is an incomplete list:
* coreutils
* dosfstools
* efitools
* guestfs-tools
* mount
* mtools
* sbsigntool
@ -63,6 +64,24 @@ The test script supports either:
physical board, attach to the board's console stream, and reset the board.
Further details are described later.
The usage of command 'sudo' should be avoided in tests. To create disk images
use command virt-make-fs which is provided by package guestfs-tools. This
command creates a virtual machine with QEMU in which the disk image is
generated.
Command virt-make-fs needs read access to the current kernel. On Ubuntu only
root has this privilege. You can add a script /etc/initramfs-tools/hooks/vmlinuz
with the following content to overcome the problem:
.. code-block:: bash
#!/bin/sh
echo "chmod a+r vmlinuz-*"
chmod a+r /boot/vmlinuz-*
The script should be chmod 755. It will be invoked whenever the initial RAM file
system is updated.
Using `virtualenv` to provide requirements
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~