Public bug reported:
Hi there,
There is a missing functionality in the following file: /usr/share
/initramfs-tools/hooks/cryptroot
resulting in the following error message:
cryptsetup: ERROR: Couldn't resolve device <zfs-mountpoint>
cryptsetup: WARNING: Couldn't determine root device
under the following condition:
update-initramfs -c -k all
when:
trying to resolve for encrypted zfs devices
so here is a patch to solve it, based off
Package: cryptsetup-initramfs
Version: 2:2.1.0-1ubuntu1
diff -Naur a/usr/share/initramfs-tools/hooks/cryptroot
b/usr/share/initramfs-tools/hooks/cryptroot
--- a/usr/share/initramfs-tools/hooks/cryptroot 2019-05-22 18:34:12.116097472
+0100
+++ b/usr/share/initramfs-tools/hooks/cryptroot 2019-05-22 20:13:02.159138688
+0100
@@ -72,19 +72,28 @@
# take the last mountpoint if used several times (shadowed)
unset -v devnos
spec="$(printf '%b' "$spec")"
- resolve_device "$spec" || continue # resolve_device() already
warns on error
fstype="$(printf '%b' "$fstype")"
- if [ "$fstype" = "btrfs" ]; then
- # btrfs can span over multiple devices
- if uuid="$(device_uuid "$DEV")"; then
- for dev in "/sys/fs/$fstype/$uuid/devices"/*/dev; do
- devnos="${devnos:+$devnos }$(cat "$dev")"
- done
- else
- cryptsetup_message "ERROR: $spec: Couldn't determine UUID"
+ if [ "$fstype" = "zfs" ]; then
+ # zfs can span over multiple devices
+ for dev in $(zpool status -L -P | grep -o "/dev/[^ ]*"); do
+ MAJ="$(printf "%d\n" 0x$(stat -L -c"%t" -- "$dev"))"
+ MIN="$(printf "%d\n" 0x$(stat -L -c"%T" -- "$dev"))"
+ devnos="${devnos:+$devnos }$MAJ:$MIN"
+ done
+ else
+ resolve_device "$spec" || continue # resolve_device() already
warns on error
+ if [ "$fstype" = "btrfs" ]; then
+ # btrfs can span over multiple devices
+ if uuid="$(device_uuid "$DEV")"; then
+ for dev in "/sys/fs/$fstype/$uuid/devices"/*/dev; do
+ devnos="${devnos:+$devnos }$(cat "$dev")"
+ done
+ else
+ cryptsetup_message "ERROR: $spec: Couldn't determine
UUID"
+ fi
+ elif [ -n "$fstype" ]; then
+ devnos="$MAJ:$MIN"
fi
- elif [ -n "$fstype" ]; then
- devnos="$MAJ:$MIN"
fi
fi
done </proc/mounts
Which works, I have tested it. However by solving this error message, the
script can now continue further. And it then prints out some new messages that
should not be there either. Unfortunately I could not track down the source of
those subsequent warnings!
They say:
# update-initramfs -c -k all
update-initramfs: Generating /boot/initrd.img-5.0.0-15-generic
cryptsetup: WARNING: crypt_rpool1: ignoring unknown option 'nofail'
cryptsetup: WARNING: crypt_rpool1: ignoring unknown option
'x-systemd.device-timeout'
So clearly there is something which does not recognize the fstab mounting
options of:
'nofail'
and
'x-systemd.device-timeout'
However those options are indeed valid, and were found to have a working
effect. They were tested also. So the warning is something else,
somewhere else. And I cannot grep it. Cannot google it. Nothing
happening in strace. It is pretty mysterious, as to where it is come
from. Mysterious messages!
Anyhow please take the first patch if you can. Or use those lines to
make your own version to improve as you please.
** Affects: cryptsetup (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1830110
Title:
patch for finding zfs, solves: cryptsetup: WARNING: Couldn't
determine root device
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