After resizing the VM to allocate less memory, the VM does not start the Linux OS.

Question

After resizing the VM to allocate less memory, the VM does not start the Linux OS.

Luciana Menegon Lage 0

After making a size of the VM to allocate less memory, from 128Gb to 64Gb, the VM does not start the Linux OS, it seems that it does not find the disks.

vipullag-MSFT 26,487 Reputation points Moderator

2023-06-21T04:30:46.0266667+00:00

Hello Luciana Menegon Lage

Any update on the issue?

Just checking in to see if you got a chance to see previous response from lukemurraynz.

Thanks for sharing the response lukemurraynz.
Luciana Menegon Lage 0 Reputation points

2023-06-27T17:30:45.6+00:00

Hello,

lukemurraynz, thanks for your answer!

Yes, to the original size it worked, for the size only changed cpu it worked, and for the size with more memory it worked too. Only the size with less memory did not work.

But, there were some pending OS updates for the VM and after it updated the resize worked.
Luke Murray 11,436 Reputation points MVP Volunteer Moderator

2023-06-28T21:41:05.4866667+00:00

Awesome, thanks for the update. Glad its up and running.

2 answers

Your answer

vipullag-MSFT 26,487 Reputation points Moderator

2023-06-21T04:30:46.0266667+00:00

Hello Luciana Menegon Lage

Any update on the issue?

Just checking in to see if you got a chance to see previous response from lukemurraynz.

Thanks for sharing the response lukemurraynz.
Luciana Menegon Lage 0 Reputation points

2023-06-27T17:30:45.6+00:00

Hello,

lukemurraynz, thanks for your answer!

Yes, to the original size it worked, for the size only changed cpu it worked, and for the size with more memory it worked too. Only the size with less memory did not work.

But, there were some pending OS updates for the VM and after it updated the resize worked.
Luke Murray 11,436 Reputation points MVP Volunteer Moderator

2023-06-28T21:41:05.4866667+00:00

Awesome, thanks for the update. Glad its up and running.

Answer 1

Luke Murray 11,436 MVP Volunteer Moderator

If you resize it back, to the original size does it work?

Are the disks still attached?

Its possible the VM was resized to a SKU that doesn't support the disk type you are using, verify that the SKU supports Premium Disk etc if you are running a premium disk.

Answer 2

Hello Luciana Menegon Lage

Welcome to Microsoft Q&A Platform, thanks for posting your query here.

Adding to previous response from lukemurraynz, If you have resized an Azure VM to allocate less memory and the Linux OS is not starting, it's possible that the resizing process has caused issues with disk configuration or disk detection.

If the disk is still attached to the VM, you can try to troubleshoot the issue by following these steps:

Restart the VM and go to the serial console by clicking on "Serial console" in the left-hand menu.
Check if there are any error messages related to the disk or file system.
If there are error messages, you can try to fix the file system by running a file system check. To do this, you can boot the VM from a Linux rescue disk and run the file system check from there.

If you are still unable to start the VM after trying these steps, you may need to restore the VM from a backup or create a new VM from the disk.

Hope this helps.

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After resizing the VM to allocate less memory, the VM does not start the Linux OS.

2 answers

Your answer