Netplan

netplan set results in error "OSError: [Errno 18] Invalid cross-device link"

Bug #1930675 reported by Mirco Drick on 2021-06-03

This bug affects 1 person

Affects		Status	Importance	Assigned to	Milestone
	Netplan	Fix Committed	Undecided	Unassigned

Bug Description

lsb_release -d
Description: Ubuntu 20.04.2 LTS
dpkg -l|grep netplan.io
ii netplan.io 0.102-0ubuntu1~20.04.2

trying to edit netplan yaml using netplan set, but it looks like netplan is unable to update the config files:

netplan --debug set ethernets.ens192.dhcp6=true
** (process:38433): DEBUG: 08:34:02.326: Processing input file //etc/netplan/00-installer-config.yaml..
** (process:38433): DEBUG: 08:34:02.326: starting new processing pass
** (process:38433): DEBUG: 08:34:02.326: Processing input file //etc/netplan/01-netcfg.yaml..
** (process:38433): DEBUG: 08:34:02.326: starting new processing pass
** (process:38433): DEBUG: 08:34:02.326: Processing input file //etc/netplan/50-cloud-init.yaml..
** (process:38433): DEBUG: 08:34:02.326: starting new processing pass
** (process:38433): DEBUG: 08:34:02.326: Processing input file //etc/netplan/99-netcfg-vmware.yaml..
** (process:38433): DEBUG: 08:34:02.326: starting new processing pass
** (process:38433): DEBUG: 08:34:02.327: We have some netdefs, pass them through a final round of validation
** (process:38433): DEBUG: 08:34:02.327: ens192: setting default backend to 1
** (process:38433): DEBUG: 08:34:02.327: Configuration is valid
** (process:38433): DEBUG: 08:34:02.327: eth0: setting default backend to 1
** (process:38433): DEBUG: 08:34:02.327: Configuration is valid
DEBUG:Writing file 00-installer-config.yaml: {'network': {'ethernets': {'ens192': {'dhcp4': True, 'dhcp6': True}}, 'version': 2}}
** (process:38433): DEBUG: 08:34:02.329: starting new processing pass
** (process:38433): DEBUG: 08:34:02.329: We have some netdefs, pass them through a final round of validation
** (process:38433): DEBUG: 08:34:02.329: ens192: setting default backend to 1
** (process:38433): DEBUG: 08:34:02.329: Configuration is valid
Traceback (most recent call last):
  File "/usr/sbin/netplan", line 23, in <module>
    netplan.main()
  File "/usr/share/netplan/netplan/cli/core.py", line 50, in main
    self.run_command()
  File "/usr/share/netplan/netplan/cli/utils.py", line 264, in run_command
    self.func()
  File "/usr/share/netplan/netplan/cli/commands/set.py", line 52, in run
    self.run_command()
  File "/usr/share/netplan/netplan/cli/utils.py", line 264, in run_command
    self.func()
  File "/usr/share/netplan/netplan/cli/commands/set.py", line 98, in command_set
    self.write_file(subtree, hint + '.yaml', self.root_dir)
  File "/usr/share/netplan/netplan/cli/commands/set.py", line 162, in write_file
    os.replace(tmpp, absp)
OSError: [Errno 18] Invalid cross-device link: '/tmp/netplan-set_u283unhb/etc/netplan/00-installer-config.yaml' -> '/etc/netplan/00-installer-config.yaml'