Ubuntu
mdadm package

Kernel panic - not syncing: Too many boot init vars at `nomdmonddf'

Bug #1465567 reported by Iain Lane
8
This bug affects 1 person
Affects Status Importance Assigned to Milestone
mdadm (Ubuntu)
Fix Released
Undecided
Unassigned
Trusty
Fix Released
Undecided
Iain Lane
Vivid
Fix Released
Undecided
Iain Lane

Bug Description

[Impact]

Every time grub-pc is configured when mdadm is installed, "nomdmonddf nomdmonisw" is added to GRUB_CMDLINE_LINUX_DEFAULT in /etc/default/grub. Eventually this overflows a limit in the kernel which causes panics and failed boots.

Let's only add this the once.

I had this in my cmdline

linux /boot/vmlinuz-3.19.0-20-generic root=UUID=980689ca-e7d9-4a99-8230-33b8b6e917cd ro nomdmonddf nomdmonisw nomdmonddf nomdmonisw nomdmonddf nomdmonisw
                       nomdmonddf nomdmonisw nomdmonddf nomdmonisw nomdmonddf nomdmonisw nomdmonddf nomdmonisw nomdmonddf nomdmonisw nomdmonddf nomdmonisw nomdmonddf nomdmonisw nomdmonddf
                       nomdmonisw nomdmonddf nomdmonisw systemd.debug-shell nomdmonddf nomdmonisw nomdmonddf nomdmonisw nomdmonddf nomdmonisw nomdmonddf nomdmonisw nomdmonddf nomdmonisw

We should only add the parameters if they aren't already there.

[Test Case]

1. Look at GRUB_CMDLINE_LINUX_DEFAULT in /etc/default/grub.
2. apt-get install mdadm
3. apt-get install --reinstall grub-pc

Repeat 3 a few times.

Before the SRU, you should see "nomdmonddf nomdmonisw" several times and after it just once.

[Regression Potential]

The script could have a syntax error. It could not work as intended. It might cause conffile prompts.

Check upgrades and new installs in as many scenarios as we can.

See original description
Iain Lane (laney)
Changed in mdadm (Ubuntu):
status: New → Fix Committed
Changed in mdadm (Ubuntu Trusty):
status: New → In Progress
Changed in mdadm (Ubuntu Vivid):
status: New → In Progress
Changed in mdadm (Ubuntu Trusty):
assignee: nobody → Iain Lane (laney)
Changed in mdadm (Ubuntu Vivid):
assignee: nobody → Iain Lane (laney)
Iain Lane (laney)
description: updated
Revision history for this message
Launchpad Janitor (janitor) wrote :

This bug was fixed in the package mdadm - 3.3-2ubuntu2

---------------
mdadm (3.3-2ubuntu2) wily; urgency=medium

  * debian/dmraid2mdadm.cfg: Only append to GRUB_CMDLINE_LINUX_DEFAULT one
    time. (LP: #1465567)

 -- Iain Lane <email address hidden> Tue, 16 Jun 2015 10:48:09 +0100

Changed in mdadm (Ubuntu):
status: Fix Committed → Fix Released
Revision history for this message
Chris J Arges (arges) wrote : Please test proposed package

Hello Iain, or anyone else affected,

Accepted mdadm into trusty-proposed. The package will build now and be available at https://launchpad.net/ubuntu/+source/mdadm/3.2.5-5ubuntu4.2 in a few hours, and then in the -proposed repository.

Please help us by testing this new package. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Your feedback will aid us getting this update out to other Ubuntu users.

If this package fixes the bug for you, please add a comment to this bug, mentioning the version of the package you tested, and change the tag from verification-needed to verification-done. If it does not fix the bug for you, please add a comment stating that, and change the tag to verification-failed. In either case, details of your testing will help us make a better decision.

Further information regarding the verification process can be found at https://wiki.ubuntu.com/QATeam/PerformingSRUVerification . Thank you in advance!

Changed in mdadm (Ubuntu Trusty):
status: In Progress → Fix Committed
tags: added: verification-needed
Changed in mdadm (Ubuntu Vivid):
status: In Progress → Fix Committed
Revision history for this message
Chris J Arges (arges) wrote :

Hello Iain, or anyone else affected,

Accepted mdadm into vivid-proposed. The package will build now and be available at https://launchpad.net/ubuntu/+source/mdadm/3.3-2ubuntu1.1 in a few hours, and then in the -proposed repository.

Please help us by testing this new package. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Your feedback will aid us getting this update out to other Ubuntu users.

If this package fixes the bug for you, please add a comment to this bug, mentioning the version of the package you tested, and change the tag from verification-needed to verification-done. If it does not fix the bug for you, please add a comment stating that, and change the tag to verification-failed. In either case, details of your testing will help us make a better decision.

Further information regarding the verification process can be found at https://wiki.ubuntu.com/QATeam/PerformingSRUVerification . Thank you in advance!

Revision history for this message
Iain Lane (laney) wrote :

I'd appreciate it if someone other than me could try to verify or unverify this.

Mathew Hodson (mhodson)
description: updated
Revision history for this message
Mathew Hodson (mhodson) wrote :

I reproduced the problem and verified that it is fixed by mdadm 3.2.5-5ubuntu4.2 from trusty-proposed. Additional "nomdmonddf nomdmonisw" entries are not appended when grub is reinstalled.

If you already had additional entries, they won't be removed when grub is reconfigured though.

I don't usually use mdadm, and I don't have a RAID array, so I can't test other than that.

Adam Conrad (adconrad)
tags: added: verification-done
removed: verification-needed
Revision history for this message
Launchpad Janitor (janitor) wrote :

This bug was fixed in the package mdadm - 3.2.5-5ubuntu4.2

---------------
mdadm (3.2.5-5ubuntu4.2) trusty; urgency=medium

  * debian/dmraid2mdadm.cfg: Only append to GRUB_CMDLINE_LINUX_DEFAULT one
    time. (LP: #1465567)

 -- Iain Lane <email address hidden> Tue, 16 Jun 2015 11:06:14 +0100

Changed in mdadm (Ubuntu Trusty):
status: Fix Committed → Fix Released
Revision history for this message
Adam Conrad (adconrad) wrote : Update Released

The verification of the Stable Release Update for mdadm has completed successfully and the package has now been released to -updates. Subsequently, the Ubuntu Stable Release Updates Team is being unsubscribed and will not receive messages about this bug report. In the event that you encounter a regression using the package from -updates please report a new bug using ubuntu-bug and tag the bug report regression-update so we can easily find any regressions.

Revision history for this message
Launchpad Janitor (janitor) wrote :

This bug was fixed in the package mdadm - 3.3-2ubuntu1.1

---------------
mdadm (3.3-2ubuntu1.1) vivid; urgency=medium

  * debian/dmraid2mdadm.cfg: Only append to GRUB_CMDLINE_LINUX_DEFAULT one
    time. (LP: #1465567)

 -- Iain Lane <email address hidden> Tue, 16 Jun 2015 10:56:44 +0100

Changed in mdadm (Ubuntu Vivid):
status: Fix Committed → Fix Released
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