Marking the zfs-linux task as won't fix after looking more deeply about
cause/consequences of forcing -f on every boot:
- zfs 0.8, as told previously, tag with which system the pool was associated
with and refuse to import previously unexported pool, as they can still be
attached to any systems (possibly running).
- there is a kernel option zfs.force=on (or _, '') which can be set to on/yes/1
to force the import in the initramfs.
This is seen upstream as a way to force broken systems, where they have
been imported but not exported before reboot.
Note that this broken case only impacts the 2 following scenarios:
- you install a new system (so system id != final id) and then reboot to your
new installed system. This is the curtin (and ubiquity) cases. I think it's
fine to require them to properly export the pools before rebooting (which will
cause a sync).
- you have 2 systems installed in parallel on the same pool, and on shutdown,
while switching between the 2 systems, the export wasn't working on shutdown.
This has to be seen how frequent this is and having zfs marked as experimental
for this cycle sounds like a good fit to get those data.
Marking the zfs task as won't fix for now.
** Changed in: zfs-linux (Ubuntu)
Status: New => Won't Fix
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https://bugs.launchpad.net/bugs/1838278
Title:
zfs-initramfs wont mount rpool
Status in curtin package in Ubuntu:
In Progress
Status in zfs-linux package in Ubuntu:
Won't Fix
Bug description:
1. Eoan
2. http://archive.ubuntu.com/ubuntu eoan/main amd64 zfs-initramfs
amd64 0.8.1-1ubuntu7 [23.1 kB]
3. ZFS rootfs rpool is mounted at boot
4. Booting an image with a rootfs rpool:
[ 0.000000] Linux version 5.2.0-8-generic (buildd@lgw01-amd64-015) (gcc
version 9.1.0 (Ubuntu 9.1.0-6ubuntu2)) #9-Ubuntu SMP Mon Jul 8 13:07:27 UTC
2019 (Ubuntu 5.2.0-8.9-generic 5.2.0)
[ 0.000000] Command line:
BOOT_IMAGE=/ROOT/zfsroot@/boot/vmlinuz-5.2.0-8-generic
root=ZFS=rpool/ROOT/zfsroot ro console=ttyS0
Command: /sbin/zpool import -N 'rpool'
Message: cannot import 'rpool': pool was previously in use from another
system.
Last accessed by ubuntu (hostid=d24775ba) at Mon Jul 29 05:21:19 2019
The pool can be imported, use 'zpool import -f' to import the pool.
Error: 1
Failed to import pool 'rpool'.
Manually import the pool and exit.
Note, this works fine under Disco,
http://archive.ubuntu.com/ubuntu disco/main amd64 zfs-initramfs amd64
0.7.12-1ubuntu5 [22.2 kB]
[ 4.773077] spl: loading out-of-tree module taints kernel.
[ 4.777256] SPL: Loaded module v0.7.12-1ubuntu3
[ 4.779433] znvpair: module license 'CDDL' taints kernel.
[ 4.780333] Disabling lock debugging due to kernel taint
[ 5.713830] ZFS: Loaded module v0.7.12-1ubuntu5, ZFS pool version 5000,
ZFS filesystem version 5
Begin: Sleeping for ... done.
Begin: Importing ZFS root pool 'rpool' ... Begin: Importing pool 'rpool'
using defaults ... done.
Begin: Mounting 'rpool/ROOT/zfsroot' on '/root//' ... done.
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