What can we do to address these types of issues, without relying on 3rd party PPAs?
https://bugs.launchpad.net/ubuntu/+source/zfs-linux/+bug/1939210 -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to zfs-linux in Ubuntu. https://bugs.launchpad.net/bugs/1947568 Title: cannot promote clone: "not a cloned filesystem" Status in zfs-linux package in Ubuntu: Confirmed Bug description: I have a zvol containing a Windows image for a virtual machine. After restarting the system a node under /dev/zvol/... was not created for the virtual disk and no amount of prompting by `udevadm trigger` helped. Instead I created a snapshot from the most recent hourly backup: # zfs clone rpool/vm/windows/windows10/hda@hourly07 rpool/vm/windows/windows10/hda-new # zfs promote rpool/vm/windows/windows10/hda-new cannot promote 'rpool/vm/windows/windows10/hda-new': not a cloned filesystem (didn't work here but carried on assuming something can be sorted later) # zfs rename rpool/vm/windows/windows10/hda rpool/vm/windows/windows10/hda-old # zfs rename rpool/vm/windows/windows10/hda-new rpool/vm/windows/windows10/hda Entries in /dev appeared and I could start the virtual machine. Trying to promote the clone gives 'not a cloned filesystem' message. I later renamed the old zvol and tried to cleanup: # zfs rename rpool/vm/windows/windows10/hda-old rpool/to-be-deleted # zfs destroy rpool/to-be-deleted@hourly07 cannot destroy 'rpool/to-be-deleted@hourly07': snapshot has dependent clones use '-R' to destroy the following datasets: rpool/vm/windows/windows10/hda@hourly09 rpool/vm/windows/windows10/hda@hourly10 rpool/vm/windows/windows10/hda # zfs promote rpool/vm/windows/windows10/hda cannot promote 'rpool/vm/windows/windows10/hda': not a cloned filesystem # zfs get origin rpool/vm/windows/windows10/hda NAME PROPERTY VALUE SOURCE rpool/vm/windows/windows10/hda origin rpool/to-be-deleted@hourly07 - # zfs get clones rpool/to-be-deleted@hourly07 NAME PROPERTY VALUE SOURCE rpool/to-be-deleted@hourly07 clones rpool/vm/windows/windows10/hda - The dependency between seems to be as expected. This small test fails in the same way: # zfs create -V1G rpool/vm/test # zfs snapshot rpool/vm/test@test2 # zfs clone rpool/vm/test@test2 rpool/vm/test3 # zfs promote rpool/vm/test3 cannot promote 'rpool/vm/test3': not a cloned filesystem # zfs get origin rpool/vm/test3 NAME PROPERTY VALUE SOURCE rpool/vm/test3 origin rpool/vm/test@test2 - # zfs get clones rpool/vm/test@test2 NAME PROPERTY VALUE SOURCE rpool/vm/test@test2 clones rpool/vm/test3 - All the zpool members are ONLINE and no errors are reported. # lsb_release -a No LSB modules are available. Distributor ID: Ubuntu Description: Ubuntu 20.04.3 LTS Release: 20.04 Codename: focal # uname -r 5.11.0-37-generic # modinfo zfs | grep -i version version: 2.0.2-1ubuntu5.1 srcversion: F267DF7B3FFB43AFE76257D vermagic: 5.11.0-37-generic SMP mod_unload modversions # apt-cache policy zfsutils-linux zfsutils-linux: Installed: 0.8.3-1ubuntu12.12 Candidate: 0.8.3-1ubuntu12.13 Version table: 0.8.3-1ubuntu12.13 500 500 http://gb.archive.ubuntu.com/ubuntu focal-updates/main amd64 Packages *** 0.8.3-1ubuntu12.12 100 100 /var/lib/dpkg/status 0.8.3-1ubuntu12.9 500 500 http://security.ubuntu.com/ubuntu focal-security/main amd64 Packages 0.8.3-1ubuntu12 500 500 http://gb.archive.ubuntu.com/ubuntu focal/main amd64 Packages To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/zfs-linux/+bug/1947568/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
