I was going to install the maintenance release for 3.5, I performed an ftp backup, and then I stopped NCS via ssh so that I could create a VM snapshot. When that was finished, I attempted to run NCS start, and that failed with the following message:
Warning: Unable to open /dev/sr0 read-write (Read-only file system). /dev/sr0
has been opened read-only.
Error: /dev/sr0: unrecognised disk label
cat: write error: No space left on device
I attempted to restore from the ftp backup, and that failed. I then tried rolling back with the VM snapshot, but I am unable to start NCS because of the message above and I was wondering if anyone had any suggestions. I do have a case open but I thought I would try this avenue as well.
Thanks for the help. I came across the link below and there is a reference where someone rebuilt the wtmp folder so I tried that and it worked.
#enter shell: shell #get root sudo su - #write an empty new wtmp file (this can take a minute) cat /dev/null > /var/log/wtmp