Problem VMware: The parent virtual disk has been modified since the child was created. The content ID of the parent virtual disk does not match the corresponding parent content ID in the child
After my weekend backups I was greeted this morning with a virtual guest that would not power on, instead I was getting the below error;
And on the summary tab for the virtual server I had a message informing me the “Virtual machine disks consolidation is needed”
Resolution:
The first place I checked was the vmware.log file for the guest, you can find this by browsing the datastore for the guest and downloading the vmware.log file. I find opening the log in Notepad++ works best for me.
In the log I spotted the message Content ID mismatch (parentCID ed06b3ce != 0cb205b1)
Next I browsed the datastore for the guest and downloaded the disk descriptors files, these are the smaller VMDK files.
I opened both of the disk descriptor files to check which one had its parentCID set to ed06b3ce (as per the message in the vmware.log)
The entry in the vmware.log file was fairly clear the parentCID was currently set to ed06b3ce but VMware was expecting it to be 0cb205b1. So I changed the parentCID in my disk descriptor file from ed06b3ce to 0cb205b1.
The descriptor file changed from;
And changed to:
I uploaded the changed VMDK file back to the datastore overwriting the file that was there.
Finally I powered on the guest (may has crossed my fingers) and the server started up fine.
Thank you so much! This helped me out, my VM is working again.
Thank You!!!
Saved me Today !!
Thanks
thank you very much
Thanks, this saved my VM
Glad I could help.
Great post. Solved my problem!
Thanks for the feedback, I am glad I could help. Phil
I am very thankful for this solution. Worked fine for me. Saved my VM and my job! Greetings from Brasil!
Hi, Thank you for the feedback I am glad this post helped you out. Phil
Really saved a lot of my efforts i am struggling for whole week… Thanks a lot Swaroop
Really glad I could help.
Short and clear. This was a lifesaver. Thank you!
thank bro, u save my life
hey guys,i found that my VMDK file is too big,about 14GB ,it’s name “nwin7_2-000002.vmdk”, i try to open it with Notepad++,but it alert that it is too big,it can not open the file,how can it modified “nwin7_2-000002.vmdk” ?
thanks.
Thank you saved my hair !
6 years after your post : THANKS !
Glad it helped and still of use.
Stay safe.
Phil
I recovered my virtual machine, thank you very much. I have a sql server on that machine, it is possible that the databases are out of date, but only some of them?