12.0-U1.1

3 minute read.

Last Modified 2022-04-05 15:50 -0400

TrueNAS Quality Lifecycle

Release Stage	Completed QA Cycles	Typical Use	Description
NIGHTLY	0	Developers	Incomplete
ALPHA	1	Testers	Not much field testing
BETA	2	Enthusiasts	Major Feature Complete, but expect some bugs
RC	4	Home Users	Suitable for non-critical deployments
RELEASE	6	General Use	Suitable for less complex deployments
U1	7	Business Use	Suitable for more complex deployments
U2+	8	Larger Systems	Suitable for higher uptime deployments

January 15, 2021

iXsystems is pleased to announce the general availability of TrueNAS 12.0-U1.1! This is a minor version release to work around a critical ZFS issue that could impact systems with a rare but serious issue with data integrity under some very uncommon access patterns. To date iXsystems has only observed these issues while running with some very specific virtualization workloads, however ALL TrueNAS 12.0 or higher users are encouraged to upgrade their systems immediately to 12.0-U1.1 out of an overabundance of caution.

TrueNAS Enterprise customers with 12.0 installed can always contact iXsystems Support for assistance upgrading their TrueNAS deployments.

Contacting iXsystems Support

Customers who purchase iXystems hardware or that want additional support must have a support contract to use iXystems Support Services. The TrueNAS Community forums provides free support for users without an iXsystems Support contract.

Contact Method	Contact Options
Web	https://support.ixsystems.com
Email	support@ixsystems.com
Telephone	Monday - Friday, 6:00AM to 6:00PM Pacific Standard Time: US-only toll-free: 1-855-473-7449 option 2 Local and international: 1-408-943-4100 option 2
Telephone	After Hours (24x7 Gold Level Support only): US-only toll-free: 1-855-499-5131 International: 1-408-878-3140 (international calling rates apply)

TrueNAS 12.0-U1.1 Changelog

NAS-108627 : While the underlying ZFS issue causing the instability is being resolved, there has been a temporary reversion of the ZFS CFA patch. This means that Asynchronous Copy-on-Write is temporarily disabled in TrueNAS 12.0-U1.1, with the goal to re-enable this functionality in a later TrueNAS 12.0 update release after this issue has been fully resolved.

Known Issues

Key	Summary	Workaround
NAS-107151	Replication fails between legacy TrueNAS 9.10 systems and 12.0-BETA1 systems.	Due to numerous improvements in the replication engine and ZFS, FreeNAS/TrueNAS 9.10 systems (or earlier) can no longer replicate to or from TrueNAS 12.0. Update the legacy TrueNAS system to FreeNAS/TrueNAS 11.3 or newer.
NAS-106992	Persistent L2ARC is disabled by default.	While the underlying issues have been fixed, this setting continues to be disabled by default for additional performance investigation. To manually reactivate persistent L2ARC, log in to the TrueNAS Web Interface, go to System > Tunables, and add a new tunable with these values: Type = sysctl Variable = vfs.zfs.l2arc.rebuild_enabled Value = 1
	TrueNAS "root" user account cannot be an SMB user.	This is an intentional change to improve software security and suitability for deployment in a variety of environments. Update the SMB configuration to use a different user account.
NAS-108580	U1 update is incorrectly flagged as "Not a Production Release"	This warning is a result of the Enterprise train not being activated yet and can be safely ignored. This will be automatically corrected on February 2nd, 2021 when the Enterprise update train is activated.
	Performance regressions on some Intel and Chelsio Cards vs 11.X Series	Our team is aware of some performance regressions when using Intel and Chelsio Network Devices on TrueNAS 12.0. These issues have been identified in upstream FreeBSD 12.2 and fixes are now pending to resolve these regressions. An update release will be issued in the near future.