Hello Carlo, 

When you create VM from Cloudstack, it create disks, network and everything and 
it uses the DB to store all those details, So whenever you start the VM it use 
all the DB entries and try to power on..! So if you want to see the actual disk 
name, and other details which is mapped to your hypervisor, 

Login to DB -

1- Check the vm_instance table for VM details.
2- Check the volumes tables for disk related info. (In the volume table - check 
the path and chain_info - You will see the exact details there)


So, it’s cloudstack behaviour that it maps the disk name i.e by UUID.vmdk or 
root_disk.vmdk. You can find the details in volume table.







Vivek Kumar
Sr. Manager - Cloud & DevOps
TechOps | Indiqus Technologies

vivek.ku...@indiqus.com <mailto:vivek.ku...@indiqus.com>
        www.indiqus.com <https://www.indiqus.com/>




> On 29-Jul-2023, at 2:27 AM, Carlo Fernandez <cfernan...@alatar.co> wrote:
> 
> Hello,
> 
> I’ve figured out that the disk for the VM that won’t start is named ROOT-37 
> on CloudStack, but it is definitely not named that in vCenter.
> 
> I spun up a VM using the built-in CentOS template, and the root disk was 
> indeed named ROOT-36 on both CloudStack and vCenter. I can stop and start 
> that instance without any issues.
> 
> Furthermore, I notice that when I shut down the VM that won’t start, its 
> network adapter and disk are removed. I also notice that there is an ISO 
> attached to the VM on vCenter, but the attached ISO is NOT the install ISO 
> for the OS.
> 
> If I remove this ISO, and manually re-attach the disk and NIC, the VM will 
> boot back into the OS without issues, and CloudStack will see this and update 
> the VM’s status accordingly. The VNC console continues to work after manually 
> reconfiguring and restarting the VM.
> 
> My guess is that the VM can’t start after being shut down via the CS GUI 
> because when it wants to find the disk again, it can’t find it as it is not 
> named as CS would have expected it to be. This is the conclusion I’ve come to 
> after testing.
> 
> Does anybody have any other guesses/advice? I’ve no idea why vCenter is not 
> naming the disk properly, or if it should even matter. Either way, CloudStack 
> is kind of unusable in this state.
> 
> As I am completely green to CS and the documentation/forums have not provided 
> any clues, I’ve got no idea where to start looking to resolve this issue. Any 
> help or advice would be highly appreciated!
> 
> Regards,
> 
> Carlo Fernandez.
> 
> From: Carlo Fernandez <cfernan...@alatar.co>
> Date: Friday, July 28, 2023 at 3:33 AM
> To: users@cloudstack.apache.org <users@cloudstack.apache.org>
> Subject: Re: Stopped Instances Can’t Start Back Up
> Hi Vivek,
> 
> The VM did have an ISO attached for the initial install as the goal is to 
> create a template, but I removed it once the install was complete.
> 
> I only shut the VM down after the OS had been fully installed.
> 
> I confirmed that the ISO was not attached both in the CS GUI and vCenter.
> 
> I could try re-attaching the ISO?
> 
> Regards,
> 
> Carlo.
> 
>> On Jul 28, 2023, at 3:27 AM, Vivek Kumar <vivek.ku...@indiqus.com.invalid> 
>> wrote:
>> 
>> Do you have ISO attached to this VM ? If yes then can you try to unmount 
>> the ISO from cloudstack GUI and then try to power on ?
>> 
>> 
>> 
>> Vivek Kumar
>> Sr. Manager - Cloud & DevOps
>> TechOps | Indiqus Technologies
>> 
>> vivek.ku...@indiqus.com <mailto:vivek.ku...@indiqus.com>
>>   www.indiqus.com<http://www.indiqus.com> <https://www.indiqus.com/>
>> 
>> 
>> 
>> 
>>> On 28-Jul-2023, at 3:49 PM, Carlo Fernandez <cfernan...@alatar.co> wrote:
>>> 
>>> Hi Vivek,
>>> 
>>> Strange. My client shows they’re attached.
>>> 
>>> I’ve re-attached them.
>>> 
>>> Thank you again in advance!
>>> 
>>> Regards,
>>> 
>>> Carlo.
>>> 
>>> 
>>> On Jul 28, 2023, at 3:11 AM, Vivek Kumar <vivek.ku...@indiqus.com.invalid 
>>> <mailto:vivek.ku...@indiqus.com.invalid>> wrote:
>>> 
>>> I don’t see any logs attached to this mail,
>>> 
>>> 
>>> Vivek Kumar
>>> Sr. Manager - Cloud & DevOps
>>> TechOps | Indiqus Technologies
>>> 
>>> vivek.ku...@indiqus.com <mailto:vivek.ku...@indiqus.com> 
>>> <mailto:vivek.ku...@indiqus.com>
>>>  www.indiqus.com<http://www.indiqus.com> <http://www.indiqus.com/> 
>>> <https://www.indiqus.com/>
>>> 
>>> 
>>> 
>>> 
>>> 
>>> On 28-Jul-2023, at 1:04 PM, Carlo Fernandez <cfernan...@alatar.co 
>>> <mailto:cfernan...@alatar.co>> wrote:
>>> 
>>> Hi,
>>> 
>>> My apologies, forgot to include the logs.
>>> 
>>> Attached.
>>> 
>>> Regards,
>>> 
>>> Carlo Fernandez
>>> 
>>> From: Carlo Fernandez <cfernan...@alatar.co 
>>> <mailto:cfernan...@alatar.co><mailto:cfernan...@alatar.co<mailto:cfernan...@alatar.co%3e%3cmailto:cfernan...@alatar.co>>>
>>> Date: Friday, July 28, 2023 at 12:32 AM
>>> To: users@cloudstack.apache.org 
>>> <mailto:users@cloudstack.apache.org><mailto:users@cloudstack.apache.org<mailto:users@cloudstack.apache.org%3e%3cmailto:users@cloudstack.apache.org>>
>>>  <users@cloudstack.apache.org 
>>> <mailto:users@cloudstack.apache.org><mailto:users@cloudstack.apache.org<mailto:users@cloudstack.apache.org%3e%3cmailto:users@cloudstack.apache.org>>>
>>> Subject: Re: Stopped Instances Can’t Start Back Up
>>> 
>>> Hi Vivek,
>>> 
>>> Thanks for your prompt response!
>>> 
>>> The error the GUI shows is “VM-799f45df-2e11-41ca-b866-445c3e7101ce) Unable 
>>> to start a VM [799f45df-2e11-41ca-b866-445c3e7101ce] due to [Unable to 
>>> create a deployment for VM instance 
>>> {"id":35,"instanceName":"i-2-35-VM","type":"User","uuid":"799f45df-2e11-41ca-b866-445c3e7101ce"}].”
>>> 
>>> This is exactly what is shown in the logs. vCenter also shows a log saying 
>>> “ Invalid configuration for device '1'.” Which also shows up in the logs.
>>> 
>>> I am running CloudStack 4.18.0.0 on Ubuntu 22.04 Jammy btw.
>>> 
>>> I have also attached a document with the snippet of logs that show the 
>>> error.
>>> 
>>> Thanks again for your advice and help!
>>> 
>>> Thanks,
>>> 
>>> Carlo Fernandez.
>>> 
>>> From: Vivek Kumar <vivek.ku...@indiqus.com.INVALID 
>>> <mailto:vivek.ku...@indiqus.com.INVALID><mailto:vivek.ku...@indiqus.com.INVALID<mailto:vivek.ku...@indiqus.com.INVALID%3e%3cmailto:vivek.ku...@indiqus.com.INVALID>>>
>>> Date: Thursday, July 27, 2023 at 11:41 PM
>>> To: users@cloudstack.apache.org 
>>> <mailto:users@cloudstack.apache.org><mailto:users@cloudstack.apache.org<mailto:users@cloudstack.apache.org%3e%3cmailto:users@cloudstack.apache.org>>
>>>  <users@cloudstack.apache.org 
>>> <mailto:users@cloudstack.apache.org><mailto:users@cloudstack.apache.org<mailto:users@cloudstack.apache.org%3e%3cmailto:users@cloudstack.apache.org>>>
>>> Subject: Re: Stopped Instances Can’t Start Back Up
>>> Hello,
>>> 
>>> What are you observing in the logs, logs may tell you the exact reason. 
>>> Paste your logs here at the time when you start the instance, then we might 
>>> be able to find the cause.
>>> 
>>> 
>>> 
>>> Vivek Kumar
>>> Sr. Manager - Cloud & DevOps
>>> TechOps | Indiqus Technologies
>>> 
>>> vivek.ku...@indiqus.com <mailto:vivek.ku...@indiqus.com> 
>>> <mailto:vivek.ku...@indiqus.com> <mailto:vivek.ku...@indiqus.com>
>>>      www.indiqus.com<http://www.indiqus.com> <http://www.indiqus.com/> 
>>> <http://www.indiqus.com/><http://www.indiqus.com <http://www.indiqus.com/> 
>>> <http://www.indiqus.com/>> <https://www.indiqus.com/>
>>> 
>>> 
>>> 
>>> 
>>> On 28-Jul-2023, at 12:07 PM, Carlo Fernandez <cfernan...@alatar.co 
>>> <mailto:cfernan...@alatar.co> <mailto:cfernan...@alatar.co>> wrote:
>>> 
>>> Hi Guys,
>>> 
>>> I've deployed CloudStack on a vSphere cluster (2 hosts running 7.0.3, 
>>> vCenter 7.0.3).
>>> 
>>> I can deploy instances without issues. However, I've thus far been unable 
>>> to start any instance I stop back up.
>>> 
>>> On vCenter, I can see that once I try to start the instance back up, its 
>>> root hard disk disappears. I can re-attach it manually but trying to start 
>>> it back up from the CS GUI just makes it disappear again.
>>> 
>>> I have configured both local and remote storage (NFS, TrueNAS) for primary 
>>> storage, and I have remote storage for secondary storage. Both have plenty 
>>> of room for the VM.
>>> 
>>> Please let me know what kind of logs you will need to provide assistance; 
>>> I'm new to CS so I'm not sure exactly where to go looking.
>>> 
>>> 
>>> I appreciate your help!
>>> 
>>> 
>>> Thanks,
>>> Carlo Fernandez
>>> 
>>> 
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>>> <CS-log-snippet.txt>
>> 
>> 
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-- 
This message is intended only for the use of the individual or entity to 
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information. If you are not the intended recipient, please delete the 
original message and any copy of it from your computer system. You are 
hereby notified that any dissemination, distribution or copying of this 
communication is strictly prohibited unless proper authorization has been 
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