Otdfbt

Trademark violation for app?

Should I follow up with an employee I believe overracted to a mistake I made?

Chinese Seal on silk painting - what does it mean?

Drawing without replacement: why is the order of draw irrelevant?

When a candle burns, why does the top of wick glow if bottom of flame is hottest?

Why is my ESD wriststrap failing with nitrile gloves on?

How do I find out the mythology and history of my Fortress?

Chebyshev inequality in terms of RMS

What's the meaning of "fortified infraction restraint"?

Is it fair for a professor to grade us on the possession of past papers?

How can I reduce the gap between left and right of cdot with a macro?

Putting class ranking in CV, but against dept guidelines

Is CEO the "profession" with the most psychopaths?

Why should I vote and accept answers?

Dating a Former Employee

Why is it faster to reheat something than it is to cook it?

How do I make this wiring inside cabinet safer?

What is the font for "b" letter?

Why does the remaining Rebel fleet at the end of Rogue One seem dramatically larger than the one in A New Hope?

NumericArray versus PackedArray in MMA12

What was the first language to use conditional keywords?

How do living politicians protect their readily obtainable signatures from misuse?

Find 108 by using 3,4,6

Does the Weapon Master feat grant you a fighting style?

Ubuntu VM will not boot up with Kernel newer than version with Microsoft Hyper-V Hypervisor on Windows Server 2012r2

.everyoneloves__top-leaderboard:empty,.everyoneloves__mid-leaderboard:empty,.everyoneloves__bot-mid-leaderboard:empty height:90px;width:728px;box-sizing:border-box;

2

I have two Ubuntu Server 18.04 LTS VM's running on Hyper-V on Windows Server 2012r2. Additionally, I have two Windows VM's (1 10, 1 7) on the same Hyper-V server. The Windows VM's have not experienced this problem.

They both exhibit the following symptoms when booted from a kernel > 4.15.0-43 (specifically 46 or 47)

The Kernel boots very very slowly compared to normal. It typically hangs for a while around this line: and eventually continues.

The next line it hangs on for a while is: followed by

After a long time, the virtual machine fails to find the virtual hard drive and boots to a BusyBox recovery terminal looking like:

I can boot off of a Linux live-cd (Ubuntu 18.04 LTS), mount the partition of the virtual hard drive and access all the files. Additionally, I can confirm that the UUID seen in the recovery terminal is correct.

This did occur after the windows server updates KB4493451, KB890830 April, KB890830 March and KB4489891. However, I cannot confirm if the Linux VM's were rebooted between the application of those updates and now. I can confirm that the problem did occur for the first time after the reboot after the installation of KB890830. (We haven't rebooted since the installation of KB4493451).

What might be the problem and how can we ensure that when the machine (either physical or virtual) reboots, all the Linux VM's startup properly.

Thank you very much.

ubuntu windows-server-2012-r2 hyper-v linux-kernel ubuntu-18.04

share|improve this question

edited Apr 13 at 7:42

mature

1489

asked Apr 12 at 21:08

tkr65536tkr65536

111

New contributor

tkr65536 is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  This machine is failing to mount the root partition, probably because it "doesn't exist" during boot. What is the root filesystem storage stack using?
  
  – Spooler
  Apr 12 at 23:02
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  It is formatted ext4. The Virtual Hard Disk is a VHDX file. There are two partitions - a 1MB "BIOS-Boot" and the OS/boot disk. Both were created during the Standard Ubuntu Installation procedure WITHOUT LVM. The OS/Boot partition (sda2) mounts on an Ubuntu Live CD with the command "sudo mount /dev/sda2 /mnt
  
  – tkr65536
  Apr 13 at 5:30
  

  
  
  
  

add a comment | 

2

I have two Ubuntu Server 18.04 LTS VM's running on Hyper-V on Windows Server 2012r2. Additionally, I have two Windows VM's (1 10, 1 7) on the same Hyper-V server. The Windows VM's have not experienced this problem.

They both exhibit the following symptoms when booted from a kernel > 4.15.0-43 (specifically 46 or 47)

The Kernel boots very very slowly compared to normal. It typically hangs for a while around this line: and eventually continues.

The next line it hangs on for a while is: followed by

After a long time, the virtual machine fails to find the virtual hard drive and boots to a BusyBox recovery terminal looking like:

I can boot off of a Linux live-cd (Ubuntu 18.04 LTS), mount the partition of the virtual hard drive and access all the files. Additionally, I can confirm that the UUID seen in the recovery terminal is correct.

This did occur after the windows server updates KB4493451, KB890830 April, KB890830 March and KB4489891. However, I cannot confirm if the Linux VM's were rebooted between the application of those updates and now. I can confirm that the problem did occur for the first time after the reboot after the installation of KB890830. (We haven't rebooted since the installation of KB4493451).

What might be the problem and how can we ensure that when the machine (either physical or virtual) reboots, all the Linux VM's startup properly.

Thank you very much.

ubuntu windows-server-2012-r2 hyper-v linux-kernel ubuntu-18.04

share|improve this question

edited Apr 13 at 7:42

mature

1489

asked Apr 12 at 21:08

tkr65536tkr65536

111

New contributor

tkr65536 is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  This machine is failing to mount the root partition, probably because it "doesn't exist" during boot. What is the root filesystem storage stack using?
  
  – Spooler
  Apr 12 at 23:02
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  It is formatted ext4. The Virtual Hard Disk is a VHDX file. There are two partitions - a 1MB "BIOS-Boot" and the OS/boot disk. Both were created during the Standard Ubuntu Installation procedure WITHOUT LVM. The OS/Boot partition (sda2) mounts on an Ubuntu Live CD with the command "sudo mount /dev/sda2 /mnt
  
  – tkr65536
  Apr 13 at 5:30
  

  
  
  
  

add a comment | 

I have two Ubuntu Server 18.04 LTS VM's running on Hyper-V on Windows Server 2012r2. Additionally, I have two Windows VM's (1 10, 1 7) on the same Hyper-V server. The Windows VM's have not experienced this problem.

They both exhibit the following symptoms when booted from a kernel > 4.15.0-43 (specifically 46 or 47)

The Kernel boots very very slowly compared to normal. It typically hangs for a while around this line: and eventually continues.

The next line it hangs on for a while is: followed by

After a long time, the virtual machine fails to find the virtual hard drive and boots to a BusyBox recovery terminal looking like:

I can boot off of a Linux live-cd (Ubuntu 18.04 LTS), mount the partition of the virtual hard drive and access all the files. Additionally, I can confirm that the UUID seen in the recovery terminal is correct.

This did occur after the windows server updates KB4493451, KB890830 April, KB890830 March and KB4489891. However, I cannot confirm if the Linux VM's were rebooted between the application of those updates and now. I can confirm that the problem did occur for the first time after the reboot after the installation of KB890830. (We haven't rebooted since the installation of KB4493451).

What might be the problem and how can we ensure that when the machine (either physical or virtual) reboots, all the Linux VM's startup properly.

Thank you very much.

ubuntu windows-server-2012-r2 hyper-v linux-kernel ubuntu-18.04

share|improve this question

edited Apr 13 at 7:42

mature

1489

asked Apr 12 at 21:08

tkr65536tkr65536

111

New contributor

tkr65536 is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

share|improve this question

edited Apr 13 at 7:42

mature

1489

asked Apr 12 at 21:08

tkr65536tkr65536

111

New contributor

tkr65536 is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

share|improve this question

edited Apr 13 at 7:42

mature

1489

asked Apr 12 at 21:08

tkr65536tkr65536

111

New contributor

tkr65536 is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

edited Apr 13 at 7:42

mature

1489

edited Apr 13 at 7:42

mature

1489

asked Apr 12 at 21:08

tkr65536tkr65536

111

New contributor

tkr65536 is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

asked Apr 12 at 21:08

tkr65536tkr65536

111