pfSense

Steve Wheeler wrote:

Enabling /var as a RAM disk conflicts with existing mounts in ZFS systems.

This most obviously presents as a problem the pkg system. The firewall is unable to check for packages or updates.

[...]

[...]

This happens if you enable RAM disks on the system that is installed as ZFS but also if you restore a config in which RAM disks are enabled.

Disbaling RAM disks will not restore access.

Need to add (checked double twice):
1.
installing CE 2.7.X (current snapshot from 20220520) on bare metal server (with hw RAID1, physicaly 2 HD in mirror, logically 1 Virtual Device)
ping, traceroute, pkg update/upgrade, NetGate servers resolved- all OK
hw reboot
2.
restore from config.xml backup file (RAM disk ENABLED)
hw reboot
ping, traceroute, - OK
NetGate servers resolving - OK
pkg update/upgrade - NO

If restoring from config.xml backup file with manually deleted <use_mfs_tmpvar></use_mfs_tmpvar> string, this error not happened.

Sergei Shablovsky wrote in #note-2:

Steve Wheeler wrote:

Disbaling RAM disks will not restore access.

Need to add (checked double twice):
1.
installing CE 2.7.X (current snapshot from 20220520) on bare metal server (with hw RAID1, physicaly 2 HD in mirror, logically 1 Virtual Device)
ping, traceroute, pkg update/upgrade, NetGate servers resolved- all OK
hw reboot
2.
restore from config.xml backup file (RAM disk ENABLED)
hw reboot
ping, traceroute, - OK
NetGate servers resolving - OK
pkg update/upgrade - NO

If restoring from config.xml backup file with manually deleted <use_mfs_tmpvar></use_mfs_tmpvar> string, this error not happened after restoring from .xml backup file.

When restoring form config.xml where <use_mfs_tmpvar></use_mfs_tmpvar> exist, then hw reboot, then manually in editor or webGUI delete <use_mfs_tmpvar></use_mfs_tmpvar>, then hw reboot,- this error still persist.

There are similar problem in 2017, in CE 2.4.0 version

https://forum.netgate.com/topic/109945/error-it-was-not-possible-to-identify-which-pfsense-kernel-is-installed