** Description changed:
+ == SRU Request, Artful ==
+ Enable ZFS module to be loaded without the broken ubuntu-load-zfs-
+ == Fix ==
+ Add a new zfs-load-module.service script that modprobes the ZFS module
+ and remove any hard coded module loading from zfs-import-cache.service &
+ zfs-import-scan.service and make these latter scripts require the new
+ zfs-load-module.service script. Also remove the now defunct ubuntu-
+ load-zfs-unconditionally.patch as this will no longer be required.
+ == Testcase ==
+ On a clean VM, install with the fixed package, zfs should load
+ == Regression potential ==
+ ZFS module may not load if the changes are broken. However, testing
+ proves this not to be the case.
I just noticed on my test VM of artful that zfs-import-cache.service
does not have a ConditionPathExists=/etc/zfs/zpool.cache. Because of
that, it fails on startup, since the cache file does not exist.
This line is being deleted by
debian/patches/ubuntu-load-zfs-unconditionally.patch. This patch seems to exist
This patch still exists in bionic, so I assume it will be similarly
If the goal of the patch is to load the module (and only that), I think
it should create a third unit instead:
^^ runs modprobe zfs
zfs-import-cache.service & zfs-import-scan.service
^^ per upstream minus modprobe plus Requires=zfs-load-module.service
I have tested this manually and it works. I can submit a package patch
if this is the desired solution.
Interestingly, before this change, zfs-import-scan.service wasn't
starting. If started manually, it worked. I had to give it a `systemctl
enable zfs-import-scan.service` to create the Wants symlinks. Looking at
the zfsutils-linux.postinst, I see the correct boilerplate from
dh_systemd, so I'm not sure why this wasn't already done. Can anyone
confirm or deny whether zfs-import-scan.service is enabled out-of-the-
box on their system?
Is the zfs-import-scan.service not starting actually the cause of the
original bug? The design is that *either* zfs-import-cache.service or
zfs-import-scan.service starts. They both call modprobe zfs.
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zfs-import-cache.service fails on startup
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