This bug was fixed in the package zfs-linux - 0.8.3-1ubuntu12.5
---------------
zfs-linux (0.8.3-1ubuntu12.5) focal; urgency=medium
* Prevent build of the zfs-dkms binary package for kernels later than 5.4.
If that is required, one should use the zfs-dkms package of a later series
(like it is done for built-in modules of Ubuntu kernels). (LP: #1902701)
-- Stefan Bader <stefan.ba...@canonical.com> Tue, 03 Nov 2020 18:05:38
+0100
** Changed in: zfs-linux (Ubuntu Focal)
Status: Fix Committed => Fix Released
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https://bugs.launchpad.net/bugs/1902701
Title:
zfs-linux 0.8.3-1ubuntu12.4 ADT test failure with linux-hwe-5.8
5.8.0-25.26~20.04.1
Status in zfs-linux package in Ubuntu:
Fix Released
Status in zfs-linux source package in Focal:
Fix Released
Bug description:
[SRU Justification]
Impact: When attempting to compile the zfs-dkms module on a 5.8 kernel
the module fails to properly configure the build. The kernel driver
part of zfs-linux is only prepared to handle the kernels it released
with. For Ubuntu kernels the zfs module is build based on the zfs-dkms
that is current for the series the kernel originates from (so Groovy
for 5.8). And this should be the encouraged way to do this.
Fix: Add a limitation to the dkms package to only build for supported
kernels. This causes the whole build/install to be skipped on 5.8
rather than to fail.
Testcase: dkms install runs for 5.4 and 5.8 in Focal. For the 5.8 kernel this
should result in:
Building initial module for 5.8.0-25-generic
Error! The /var/lib/dkms/zfs/0.8.3/5.8.0-25-generic/x86_64/dkms.conf for
module zfs includes a BUILD_EXCLUSIVE directive which
does not match this kernel/arch. This indicates that it should not be built.
Skipped.
Regression Potential: Since the module fails to compile for the newer
kernel there should be nothing that can regress.
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Testing failed on:
amd64:
https://objectstorage.prodstack4-5.canonical.com/v1/AUTH_77e2ada1e7a84929a74ba3b87153c0ac/autopkgtest-focal/focal/amd64/z/zfs-linux/20201016_104632_e52aa@/log.gz
arm64:
https://objectstorage.prodstack4-5.canonical.com/v1/AUTH_77e2ada1e7a84929a74ba3b87153c0ac/autopkgtest-focal/focal/arm64/z/zfs-linux/20201016_144759_7735c@/log.gz
ppc64el:
https://objectstorage.prodstack4-5.canonical.com/v1/AUTH_77e2ada1e7a84929a74ba3b87153c0ac/autopkgtest-focal/focal/ppc64el/z/zfs-linux/20201016_111820_ceeb8@/log.gz
s390x:
https://objectstorage.prodstack4-5.canonical.com/v1/AUTH_77e2ada1e7a84929a74ba3b87153c0ac/autopkgtest-focal/focal/s390x/z/zfs-linux/20201016_082202_1adb7@/log.gz
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