This bug is missing log files that will aid in diagnosing the problem.
While running an Ubuntu kernel (not a mainline or third-party kernel)
please enter the following command in a terminal window:
apport-collect 1766770
and then change the status of the bug to 'Confirmed'.
If, due to the nature of the issue you have encountered, you are unable
to run this command, please add a comment stating that fact and change
the bug status to 'Confirmed'.
This change has been made by an automated script, maintained by the
Ubuntu Kernel Team.
** Changed in: linux (Ubuntu)
Status: New => Incomplete
** Tags added: artful
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https://bugs.launchpad.net/bugs/1766770
Title:
4.15.0-15-generic can't find root device
Status in linux package in Ubuntu:
Incomplete
Bug description:
This is on a Hewlett-Packard ProLiant DL380 G7, with a Smart Array
P410i RAID controller containing a RAID 1+0 array of four SATA hard
drives.
It's running Ubuntu 16.04 with the linux-image-generic-hwe-16.04-edge
packages installed.
The root partition consists of a simple ext4 filesystem on /dev/sda1,
which is on the RAID array
There is a more complex secondary mount involving mdraid and bcache
intended to be mounted at /srv - but we're seeing problems before that
comes into play.
Booting into the last 4.13 kernel (4.13.0-39-generic) works fine.
Booting into the latest 4.15 kernel (4.15.0-15-generic) results in the
root device not being found, and a stacktrace before an initramfs
prompt: https://pastebin.ubuntu.com/p/JnTXQ5YP9W/
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