** Changed in: zfs-linux (Ubuntu)
Status: Confirmed => In Progress
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https://bugs.launchpad.net/bugs/1577057
Title:
zfs initrd script fails when rootdelay boot option is set
Status in zfs-linux package in Ubuntu:
In Progress
Bug description:
It looks like that, when booting off zfs (zfs holds /boot) with the
rootdelay boot option set, the boot process fails in the initrd fase,
asking to manually import the pool using zpool import -f -R / -N. I
only had one system with that parameter set, which I seldom reboot.
I did not find an upstream reference of this bug or behavior.
The error is caused by the fact the pool is already imported: "zpool
status" executed on the initramfs prompt will correctly list the pool
and all devices online. To continue, one has to export the pool, re-
import it and exit the initramfs prompt after which regular booting
continues. Not exporting and reimporting it leaves the pool readonly
leading to boot errors further down the road (systemd units failing).
I noticed zfs_autoimport_disable is set to 1 in the initramfs
environment, so looking at /usr/share/initramfs-tools/scripts/zfs this
section might be the issue (zpool import succeeding, but $ZFS_HEALTH
never returning with the correct status (I'm not a programmer but
perhaps ZFS_HEALTH is a local variable in the zfs_test_import
function)):
delay=${ROOTDELAY:-0}
if [ "$delay" -gt 0 ]
then
# Try to import the pool read-only. If it does not import with
# the ONLINE status, wait and try again. The pool could be
# DEGRADED because a drive is really missing, or it might just
# be slow to be detected.
zfs_test_import
retry_nr=0
while [ "$retry_nr" -lt "$delay" ] && [ "$ZFS_HEALTH" != "ONLINE" ]
do
[ "$quiet" != "y" ] && log_begin_msg "Retrying ZFS read-only import"
/bin/sleep 1
zfs_test_import
retry_nr=$(( $retry_nr + 1 ))
[ "$quiet" != "y" ] && log_end_msg
done
unset retry_nr
unset ZFS_HEALTH
fi
unset delay
Edit: to be clear: I removed the rootdelay parameter, regenerated the initrd,
and was able to boot successfully afterwards.
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