xenial image fails to mount rootfs

[Markos Chandras]

Hi,

We are building a Xenial image using DIB_RELEASE=xenial and the following command

disk-image-create --no-tmpfs -o deployment_image.qcow2 -t qcow2 -p "vlan,vim,less,bridge-utils,language-pack-en,iputils-ping,rsyslog,curl,iptables,lvm2" ubuntu-minimal vm enable-serial-console simple-init devuser growroot openssh-server

This however results in the following error when booting the image

[ 2.279933] VFS: Cannot open root device "LABEL=cloudimg-rootfs" or unknown-block(0,0): error -6
[ 2.294251] Please append a correct "root=" boot option; here are the available partitions:
[ 2.308070] 0800 1791552 sda driver: sd
[ 2.316631] 0801 1789504 sda1 15cbceb6-01
[ 2.325394] 0b00 1048575 sr0 driver: sr
[ 2.333875] Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(0,0)
[ 2.337844] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 4.4.0-96-generic #119-Ubuntu
[ 2.337844] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Ubuntu-1.8.2-1ubuntu1 04/01/2014
[ 2.337844] 0000000000000086 8d281f2c43cdce82 ffff88013ab87de8 ffffffff813fabd3
[ 2.337844] ffffffff81ca6028 ffff88013ab87e80 ffff88013ab87e70 ffffffff8118d967
[ 2.337844] 6230002000000010 ffff88013ab87e80 ffff88013ab87e18 8d281f2c43cdce82
[ 2.337844] Call Trace:
[ 2.337844] [<ffffffff813fabd3>] dump_stack+0x63/0x90
[ 2.337844] [<ffffffff8118d967>] panic+0xd3/0x215
[ 2.337844] [<ffffffff81f5f576>] mount_block_root+0x201/0x294
[ 2.337844] [<ffffffff81f5f66e>] mount_root+0x65/0x68
[ 2.337844] [<ffffffff81f5f7ab>] prepare_namespace+0x13a/0x172
[ 2.337844] [<ffffffff81f5f21b>] kernel_init_freeable+0x1e9/0x212
[ 2.337844] [<ffffffff81836ad0>] ? rest_init+0x80/0x80
[ 2.337844] [<ffffffff81836ade>] kernel_init+0xe/0xe0
[ 2.337844] [<ffffffff8184360f>] ret_from_fork+0x3f/0x70
[ 2.337844] [<ffffffff81836ad0>] ? rest_init+0x80/0x80

I have attached the entire log for the build

I also noticed that the final image misses an initrd file in /boot which may be the reason for the failure.

[Markos Chandras (hwoarang)]

This line is also interested in the log

Installing GRUB2...
Installing for i386-pc platform.
Installation finished. No error reported.
/tmp/in_target.d/finalise.d/50-bootloader: line 160: type: grub2-mkconfig: not found
Generating grub configuration file ...

[Markos Chandras (hwoarang)]

Hmm that's actually from another log

[Andreas Florath (ansreas)]

I was able to reproduce this bug with DIB from master branch.

[YuZhang (ivysdu)]

I also encountered this issue today, and I tried to generate the initrd to /boot, but still could not fix this issue.

[Ian Wienand (iwienand)]

I believe this is fixed with https://review.openstack.org/#/c/505857/

however, master still has issues with networkx. please try again with the 2.9.0 release when it is made