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Bug#959910: dkms: improve dkms-autopkgtest

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Package: dkms
Version: 2.8.1-5
Severity: normal

Hi,

attached you can find 2 patches that aim on improving dkms-autopkgtest.
It does not solve the issue of missing linux-headers-* - that should be
addressed via autodep8.

IMO tests using dkms-autopkgtest should primarily test whether the
modules can be built against (all variants) of the current kernel to
quickly notice regressions (aka build failures) caused by newer kernel
headers.

Parsing the autoinstall result from apt-get output and logs does not
really work if the failure occurs while autopkgtest installs test
dependencies because dkms-autopkgtest won't be run in that case.
Neither does it work for multiple linux-headers-* packages being
installed.

Therefore the first patch adds the ability to disable autoinstall by
creating the flag file /etc/dkms/no-autoinstall. Then the required
packages can be installed without risking failures and dkms-autopkgtest
can run the build and install steps separately, providing more verbose
errors on failure.
dkms-autopkgtest will loop over all available kernel headers (via
existence of /lib/modules/*/build) and try to build and install the
module for them, that should work even in a plain chroot. It will
continue testing more headers even if one failed to collect as much
information as possible.

This should be used from autodep8 generated test instances like

Test-Command: /usr/lib/dkms/dkms-autopkgtest
Restrictions: needs-root, allow-stderr, superficial
Depends: dkms,
 linux-headers-4kc-malta [mipsel],
 linux-headers-5kc-malta [mips64el mipsel],
 linux-headers-686 [i386],
 linux-headers-686-pae [i386],
 linux-headers-amd64 [amd64],
 linux-headers-arm64 [arm64],
 linux-headers-armmp [armhf],
 linux-headers-armmp-lpae [armhf],
 linux-headers-cloud-amd64 [amd64],
 linux-headers-cloud-arm64 [arm64],
 linux-headers-loongson-3 [mips64el mipsel],
 linux-headers-marvell [armel],
 linux-headers-octeon [mips64el mipsel],
 linux-headers-powerpc64le [ppc64el],
 linux-headers-rpi [armel],
 linux-headers-rt-686-pae [i386],
 linux-headers-rt-amd64 [amd64],
 linux-headers-rt-arm64 [arm64],
 linux-headers-rt-armmp [armhf],
 linux-headers-s390x [s390x],
Features: test-name=dkms-autopkgtest

Note there is no longer a
  Depends: @
to prevent the *-dkms package being installed together with
linux-headers-* before dkms-autopkgtest gets the change to
create the no-autoinstall flag file.
(I'll file a separate bug about this against autodep8.)

This seems to work well for Debian (tested on bbswitch-dkms), I don't
know about the impact on Ubuntu.


Andreas

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Bug#959910: dkms: improve dkms-autopkgtest Andreas Beckmann <anbe@debian.org> - 2020-05-06 23:00 +0200

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