Additional details from a compute unit: on nova/compute/1 -- before stopping the unit, but after upgrading from train->ussuri on bionic. Note that the disk, console.log are owned nova.nova.
root@juju-ed722c-mojo-17:/var/lib/nova/instances/499b7f90-4e5e-4eb9-b29b-2befe835cbe7# ll total 184692 drwxr-x--- 2 nova nova 4096 Jun 25 17:46 ./ drwxr-x--- 5 nova nova 4096 Jun 25 18:21 ../ -rw-r----- 1 nova nova 31316 Jun 25 17:47 console.log -rw-r----- 1 nova nova 189136896 Jun 26 10:17 disk -rw-r----- 1 nova nova 79 Jun 25 17:46 disk.info root@juju-ed722c-mojo-17:/var/lib/nova/instances/499b7f90 After stopping the instance, the disk is now owned root.root. As there is no world-readable perm, nova now can't restart the instance. root@juju-ed722c-mojo-17:/var/lib/nova/instances/499b7f90-4e5e-4eb9-b29b-2befe835cbe7# ll total 184948 drwxr-x--- 2 nova nova 4096 Jun 25 17:46 ./ drwxr-x--- 5 nova nova 4096 Jun 25 18:21 ../ -rw-r----- 1 nova nova 31316 Jun 25 17:47 console.log -rw-r----- 1 root root 189399040 Jun 26 10:38 disk -rw-r----- 1 nova nova 79 Jun 25 17:46 disk.info After fixing the permissions back to nova.nova and restarting the unit, the console.log is now owned by root, and the disk by libvert-qumu.kvm. root@juju-ed722c-mojo-17:/var/lib/nova/instances/499b7f90-4e5e-4eb9-b29b-2befe835cbe7# ll total 184924 drwxr-x--- 2 nova nova 4096 Jun 26 10:39 ./ drwxr-x--- 5 nova nova 4096 Jun 26 10:38 ../ -rw------- 1 root root 8039 Jun 26 10:39 console.log -rw-r----- 1 libvirt-qemu kvm 189399040 Jun 26 10:39 disk -rw-r----- 1 nova nova 79 Jun 25 17:46 disk.info When this unit is stopped, it again goes back to root.root. root@juju-ed722c-mojo-17:/var/lib/nova/instances/499b7f90-4e5e-4eb9-b29b-2befe835cbe7# ll total 326324 drwxr-x--- 2 nova nova 4096 Jun 26 10:39 ./ drwxr-x--- 5 nova nova 4096 Jun 26 10:38 ../ -rw------- 1 root root 29040 Jun 26 10:41 console.log -rw-r----- 1 root root 334168064 Jun 26 10:41 disk -rw-r----- 1 nova nova 79 Jun 25 17:46 disk.info root@juju-ed722c-mojo-17:/var/lib/nova/instances/499b7f90-4e5e-4eb9-b29b-2befe835cbe7# The only real solution, for the moment, is to revert the permissions (as indicated in the summary) back to world readable for the disk and ../_disk/* files. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1885269 Title: ussuri: unable to stop and start an instance post upgrade To manage notifications about this bug go to: https://bugs.launchpad.net/cloud-archive/+bug/1885269/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
