Activation of logical volume is prohibited while logical volume _tmeta is active. (500)

Activation of logical volume is prohibited while logical volume _tmeta is active. (500)

Question
How do you solve the error in Proxmox that says "Activation of logical volume  is prohibited while logical volume _tmeta is active. (500)"
                I get this error
Configuration setting "thin_check_options" invalid. It's not part of any section.
Answer
This is what solved this issue.

1. First you need to comment out the section that says  thin_check_options=["-q","--skip-mappings]
    by using nano 
   
     nano /etc/lvm/lvm.conf

2. Deactivate the Volume Group if that is not what should be activated
    
    sudo lvchange -an /dev/volumeGroup/vm-136-disk-0

3. Then run the following command.
    nano /etc/udev/udev.conf

4. Then Reboot

Reference
https
//forum.proxmox.com/threads/local-lvm-not-available-after-kernel-update-on-pve-7.97406/page-3#post-558890

Other Notes from chat bot

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The error message you're encountering typically indicates an issue with activating a logical volume due to conflicts with another logical volume that's already active. Here's a general approach to solve it

1. **Check the status of logical volumes**
Run `lvdisplay` or `lvs` command to see the current status of logical volumes. Look for any LVs that are active.

2. **Identify conflicting logical volumes**
Pay attention to the logical volume mentioned in the error message (`_tmeta` in your case) and any other logical volumes that are active.

3. **Deactivate conflicting logical volumes**
If possible, deactivate the conflicting logical volume(s) using the `lvchange -an` command followed by the logical volume name. For example

   

   sudo lvchange -an /dev/volume_group_name/logical_volume_name
   

4. **Activate the desired logical volume**
Once the conflicting logical volume(s) are deactivated, try activating the logical volume you originally intended to activate.

5. **Check for dependencies**
Sometimes logical volumes have dependencies on each other. Ensure that activating or deactivating one logical volume does not break the functionality of others.

6. **Review configuration**
If you're unsure about the dependencies or configuration, review the logical volume configuration files (usually located in `/etc/lvm` or `/etc/lvm.conf`) to understand the setup better.

7. **Error logs**
Check system logs (`/var/log/messages`, `/var/log/syslog`, etc.) for any additional error messages or clues that might help diagnose the issue further.

8. **Consult documentation**
If you're still stuck, refer to the documentation of the specific logical volume manager you're using (e.g., LVM2 for Linux) for more detailed troubleshooting steps or consider seeking help from relevant forums or communities.

Remember to exercise caution when making changes to logical volumes, especially if they contain critical data. It's always a good idea to have backups before performing any potentially destructive operations.

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