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Ubuntu is a popular free and open-source Linux distribution, originally based on Debian. Ubuntu is released every six months, with long-term support (LTS) releases every two years.

A complete list of the kernel versions shipped with Ubuntu releases can be found here.

Supported Zoned Block Devices

The table below summarizes zoned block device support readiness for Ubuntu LTS releases that are still supported by Canonical.

Distribution VersionKernel VersionSCSI ZBC and ATA ZAC SupportNVMe ZNS Supportnull_blk Zone   Emulation Supportscsi_debug ZBC   Emulation  Support 
12.04 LTS3.2NoNoNoNo
14.04 LTS3.13NoNoNoNo
16.04 LTS4.4NoNoNoNo
18.04 LTS4.15YesNoYesYes
20.04 LTS5.4YesNoYesYes
22.04 LTS5.17YesYesYesYes

Supported File Systems and Device Mapper Targets

The table below shows that the pre-compiled kernel shipped with Ubuntu only offers partial support for file systems and device mapper targets that support zoned storage devices. In particular, no LTS release offers support for the dm-zoned device mapper.

File SystemsDevice Mapper
Distribution VersionKernel Versionf2fszonefsbtrfslinearflakeyzonedcrypt
12.04 LTS3.2NoNoNoNoNoNoNoNo
14.04 LTS3.13NoNoNoNoNoNoNoNo
16.04 LTS4.4NoNoNoNoNoNoNoNo
18.04 LTS4.15YesYesYesNoYesYesNoYes
20.04 LTS5.4YesYesYesNoYesYesNoYes
22.04 LTS5.17YesYesYesYesYesYesNoYes

Available Pre-Compiled Packages

Ubuntu does not provide all pre-compiled application packages supporting zoned block devices. In particular, user utilities for the zonefs file system and the dm-zoned device mapper target are not available (these utilities need to be compiled from source).

Available packages are:

  • System utilities packages:

    • util-linux (blkzone utility)
    • nvme-cli
    • sg3-utils
  • Libraries related packages:

    • libblkid1 (and libblkid-dev)
    • libzbd2 (and libzbd-dev)
    • zbd-utils (includes both command line and graphical tools)
  • File systems related packages:

    • btrfs-progs
    • f2fs-tools