[Bug 1661629] Re: upgrade of kernel fails with mkinitramfs: failed to determine device for /
John Gallagher
1661629 at bugs.launchpad.net
Wed Jul 4 01:21:35 UTC 2018
> I'm not particularly familiar with this part of initramfs-tools, but
it seems to me that essentials like the loading of the virtio_pci module
would be short-circuited by your patch.
Yes, you're right, thanks for pointing that out. If the driver isn't
built-in to the kernel, it would be omitted. I think what we need to do
here is get a list of the devices that make up the root pool, probably
from the output of `zpool list -vPL`, and then call 'block_dev_mod_add'
on each device. I'll work on updating the patch.
> I was just pointed to
https://github.com/zfsonlinux/zfs/wiki/Ubuntu-18.04-Root-on-ZFS and told
that ZFS filesystems aren't expected to be in /etc/fstab according to
those instructions. Is this correct? I haven't checked but it seems that
initramfs-tools wouldn't then fail under these conditions.
It's true that we don't have the filesystems listed in /etc/fstab. Can
you elaborate on how you anticipate that would affect building the
initramfs?
> Could you provide exact steps to reproduce your problem, please?
Once you have a machine with zfs on root, this should be reproducible by running `apt install kdump-tools`. The post install hooks fail while trying to build an initramfs for the crash kernel. We build these ubuntu images that use zfs on root using live-build (https://github.com/delphix/appliance-build/), but our process currently relies on some packages internal to our organization. If need be, we might be able to modify the build to be usable externally as well.
> Does this apply and work correctly on the current Ubuntu development release (Cosmic) please? We land changes there first and only once successful consider backporting to existing releases as appropriate.
Is it possible to upgrade my machine to the development release? If not, I might be able to modify our build process to build an Cosmic image that uses zfs on root.
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https://bugs.launchpad.net/bugs/1661629
Title:
upgrade of kernel fails with mkinitramfs: failed to determine device
for /
Status in initramfs-tools package in Ubuntu:
Confirmed
Bug description:
When upgrading packages with "apt upgrade" on Ubuntu 16.04.1 LTS with
root on ZFS I get this error:
Setting up linux-image-4.4.0-59-generic (4.4.0-59.80) ...
Running depmod.
update-initramfs: deferring update (hook will be called later)
Examining /etc/kernel/postinst.d.
run-parts: executing /etc/kernel/postinst.d/apt-auto-removal 4.4.0-59-generic /boot/vmlinuz-4.4.0-59-generic
run-parts: executing /etc/kernel/postinst.d/initramfs-tools 4.4.0-59-generic /boot/vmlinuz-4.4.0-59-generic
update-initramfs: Generating /boot/initrd.img-4.4.0-59-generic
run-parts: executing /etc/kernel/postinst.d/kdump-tools 4.4.0-59-generic /boot/vmlinuz-4.4.0-59-generic
kdump-tools: Generating /var/lib/kdump/initrd.img-4.4.0-59-generic
mkinitramfs: failed to determine device for /
mkinitramfs: workaround is MODULES=most, check:
grep -r MODULES /etc/initramfs-tools/
Error please report bug on initramfs-tools
Include the output of 'mount' and 'cat /proc/mounts'
update-initramfs: failed for with 1.
run-parts: /etc/kernel/postinst.d/kdump-tools exited with return code 1
Failed to process /etc/kernel/postinst.d at /var/lib/dpkg/info/linux-image-4.4.0-59-generic.postinst line 1052.
dpkg: error processing package linux-image-4.4.0-59-generic (--configure):
subprocess installed post-installation script returned error exit status 2
version of initramfs-tools is 0.122ubuntu8.8
Output of mount is:
sysfs on /sys type sysfs (rw,nosuid,nodev,noexec,relatime)
proc on /proc type proc (rw,nosuid,nodev,noexec,relatime)
udev on /dev type devtmpfs (rw,nosuid,relatime,size=8066020k,nr_inodes=2016505,mode=755)
devpts on /dev/pts type devpts (rw,nosuid,noexec,relatime,gid=5,mode=620,ptmxmode=000)
tmpfs on /run type tmpfs (rw,nosuid,noexec,relatime,size=1623576k,mode=755)
rpool/ROOT/ubuntu on / type zfs (rw,relatime,xattr,noacl)
securityfs on /sys/kernel/security type securityfs (rw,nosuid,nodev,noexec,relatime)
tmpfs on /dev/shm type tmpfs (rw,nosuid,nodev)
tmpfs on /run/lock type tmpfs (rw,nosuid,nodev,noexec,relatime,size=5120k)
tmpfs on /sys/fs/cgroup type tmpfs (ro,nosuid,nodev,noexec,mode=755)
cgroup on /sys/fs/cgroup/systemd type cgroup (rw,nosuid,nodev,noexec,relatime,xattr,release_agent=/lib/systemd/systemd-cgroups-agent,name=systemd)
pstore on /sys/fs/pstore type pstore (rw,nosuid,nodev,noexec,relatime)
cgroup on /sys/fs/cgroup/freezer type cgroup (rw,nosuid,nodev,noexec,relatime,freezer)
cgroup on /sys/fs/cgroup/blkio type cgroup (rw,nosuid,nodev,noexec,relatime,blkio)
cgroup on /sys/fs/cgroup/net_cls,net_prio type cgroup (rw,nosuid,nodev,noexec,relatime,net_cls,net_prio)
cgroup on /sys/fs/cgroup/memory type cgroup (rw,nosuid,nodev,noexec,relatime,memory)
cgroup on /sys/fs/cgroup/hugetlb type cgroup (rw,nosuid,nodev,noexec,relatime,hugetlb)
cgroup on /sys/fs/cgroup/cpu,cpuacct type cgroup (rw,nosuid,nodev,noexec,relatime,cpu,cpuacct)
cgroup on /sys/fs/cgroup/pids type cgroup (rw,nosuid,nodev,noexec,relatime,pids)
cgroup on /sys/fs/cgroup/devices type cgroup (rw,nosuid,nodev,noexec,relatime,devices)
cgroup on /sys/fs/cgroup/perf_event type cgroup (rw,nosuid,nodev,noexec,relatime,perf_event)
cgroup on /sys/fs/cgroup/cpuset type cgroup (rw,nosuid,nodev,noexec,relatime,cpuset)
mqueue on /dev/mqueue type mqueue (rw,relatime)
hugetlbfs on /dev/hugepages type hugetlbfs (rw,relatime)
systemd-1 on /proc/sys/fs/binfmt_misc type autofs (rw,relatime,fd=31,pgrp=1,timeout=0,minproto=5,maxproto=5,direct)
debugfs on /sys/kernel/debug type debugfs (rw,relatime)
fusectl on /sys/fs/fuse/connections type fusectl (rw,relatime)
rpool/home on /home type zfs (rw,nosuid,noatime,xattr,noacl)
rpool/home/fredrik on /home/fredrik type zfs (rw,nosuid,noatime,xattr,noacl)
rpool/home/root on /root type zfs (rw,nosuid,noatime,xattr,noacl)
rpool/srv on /srv type zfs (rw,noatime,xattr,noacl)
rpool/var/cache on /var/cache type zfs (rw,nosuid,noexec,noatime,xattr,noacl)
rpool/var/log on /var/log type zfs (rw,nosuid,noexec,noatime,xattr,noacl)
rpool/var/spool on /var/spool type zfs (rw,nosuid,noexec,noatime,xattr,noacl)
rpool/var/tmp on /var/tmp type zfs (rw,nosuid,noatime,xattr,noacl)
tmpfs on /run/user/1000 type tmpfs (rw,nosuid,nodev,relatime,size=1623576k,mode=700,uid=1000,gid=1000)
binfmt_misc on /proc/sys/fs/binfmt_misc type binfmt_misc (rw,relatime)
tracefs on /sys/kernel/debug/tracing type tracefs (rw,relatime)
cat /proc/mounts
sysfs /sys sysfs rw,nosuid,nodev,noexec,relatime 0 0
proc /proc proc rw,nosuid,nodev,noexec,relatime 0 0
udev /dev devtmpfs rw,nosuid,relatime,size=8066020k,nr_inodes=2016505,mode=755 0 0
devpts /dev/pts devpts rw,nosuid,noexec,relatime,gid=5,mode=620,ptmxmode=000 0 0
tmpfs /run tmpfs rw,nosuid,noexec,relatime,size=1623576k,mode=755 0 0
rpool/ROOT/ubuntu / zfs rw,relatime,xattr,noacl 0 0
securityfs /sys/kernel/security securityfs rw,nosuid,nodev,noexec,relatime 0 0
tmpfs /dev/shm tmpfs rw,nosuid,nodev 0 0
tmpfs /run/lock tmpfs rw,nosuid,nodev,noexec,relatime,size=5120k 0 0
tmpfs /sys/fs/cgroup tmpfs ro,nosuid,nodev,noexec,mode=755 0 0
cgroup /sys/fs/cgroup/systemd cgroup rw,nosuid,nodev,noexec,relatime,xattr,release_agent=/lib/systemd/systemd-cgroups-agent,name=systemd 0 0
pstore /sys/fs/pstore pstore rw,nosuid,nodev,noexec,relatime 0 0
cgroup /sys/fs/cgroup/freezer cgroup rw,nosuid,nodev,noexec,relatime,freezer 0 0
cgroup /sys/fs/cgroup/blkio cgroup rw,nosuid,nodev,noexec,relatime,blkio 0 0
cgroup /sys/fs/cgroup/net_cls,net_prio cgroup rw,nosuid,nodev,noexec,relatime,net_cls,net_prio 0 0
cgroup /sys/fs/cgroup/memory cgroup rw,nosuid,nodev,noexec,relatime,memory 0 0
cgroup /sys/fs/cgroup/hugetlb cgroup rw,nosuid,nodev,noexec,relatime,hugetlb 0 0
cgroup /sys/fs/cgroup/cpu,cpuacct cgroup rw,nosuid,nodev,noexec,relatime,cpu,cpuacct 0 0
cgroup /sys/fs/cgroup/pids cgroup rw,nosuid,nodev,noexec,relatime,pids 0 0
cgroup /sys/fs/cgroup/devices cgroup rw,nosuid,nodev,noexec,relatime,devices 0 0
cgroup /sys/fs/cgroup/perf_event cgroup rw,nosuid,nodev,noexec,relatime,perf_event 0 0
cgroup /sys/fs/cgroup/cpuset cgroup rw,nosuid,nodev,noexec,relatime,cpuset 0 0
mqueue /dev/mqueue mqueue rw,relatime 0 0
hugetlbfs /dev/hugepages hugetlbfs rw,relatime 0 0
systemd-1 /proc/sys/fs/binfmt_misc autofs rw,relatime,fd=31,pgrp=1,timeout=0,minproto=5,maxproto=5,direct 0 0
debugfs /sys/kernel/debug debugfs rw,relatime 0 0
fusectl /sys/fs/fuse/connections fusectl rw,relatime 0 0
rpool/home /home zfs rw,nosuid,noatime,xattr,noacl 0 0
rpool/home/fredrik /home/fredrik zfs rw,nosuid,noatime,xattr,noacl 0 0
rpool/home/root /root zfs rw,nosuid,noatime,xattr,noacl 0 0
rpool/srv /srv zfs rw,noatime,xattr,noacl 0 0
rpool/var/cache /var/cache zfs rw,nosuid,noexec,noatime,xattr,noacl 0 0
rpool/var/log /var/log zfs rw,nosuid,noexec,noatime,xattr,noacl 0 0
rpool/var/spool /var/spool zfs rw,nosuid,noexec,noatime,xattr,noacl 0 0
rpool/var/tmp /var/tmp zfs rw,nosuid,noatime,xattr,noacl 0 0
tmpfs /run/user/1000 tmpfs rw,nosuid,nodev,relatime,size=1623576k,mode=700,uid=1000,gid=1000 0 0
binfmt_misc /proc/sys/fs/binfmt_misc binfmt_misc rw,relatime 0 0
tracefs /sys/kernel/debug/tracing tracefs rw,relatime 0 0
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