** Description changed:

  After I tried to back-up my datapools from Ubuntu 19.10 to FreeBSD 12.0
  as I have done since June each week, I found out it did not work
  anymore. The regression occurred after I reinstalled Ubuntu on my new
  nvme drive. I also had to reorganize my own datapools/datasets, because
  they either moved to the nvme drive or they had to be located on 2 HDDs
  instead of 3. I had one datapool that still works, the datapool
  containing my archives and it is the datapool, that has NOT been
  reorganized. I tried for a whole long day to get the backup working
  again, but I failed. I compared the properties from datapool and
  dataset, but did not see any problem there. Only a lot of new features
  and properties not present before and not present in FreeBSD. I used
  FreeBSD, because I use for backup an old 32-bits Pentium.
  
  I have two complaints:
  - the Ubuntu upgrade did cost me the compatibility with FreeBSD. Open-ZFS? :(
- - the system transfers the dataset and at the end of a long transfer it 
decides to quit and the error messages are completely useless and self 
contradicting. On the first try it say the dataset does exist and on the second 
try it says it does NOT exist. One of the two is completely wrong. Some 
consistency and some clearer error messages would be helpful for the user. 
+ - the system transfers the dataset and at the end of a long transfer it 
decides to quit and the error messages are completely useless and self 
contradicting. 
  
+ On the first try it say the dataset does exist and on the second try it says 
it does NOT exist. One of the two is completely wrong. Some consistency and 
some clearer error messages would be helpful for the user.
  See the following set of strange set error messages on two tries:
  
  root@VM-Host-Ryzen:/home/bertadmin# /sbin/zfs send -c dpool/dummy@191130 | 
ssh 192.168.1.100 zfs receive zroot/hp-data/dummy
  cannot receive new filesystem stream: destination 'zroot/hp-data/dummy' exists
  must specify -F to overwrite it
  root@VM-Host-Ryzen:/home/bertadmin# /sbin/zfs send -c dpool/dummy@191130 | 
ssh 192.168.1.100 zfs receive -F zroot/hp-data/dummy
  cannot receive new filesystem stream: dataset does not exist
  
  A 2nd subset of my backup is stored on the laptop and that still works.
  I also compared the properties with those of my laptop, that still has
  its original datapools of begin of the year. I aligned the properties of
  FreeBSD with those of my laptop, but it did not help.
  
  I attach the properties of the datapool and dataset from both FreeBSD
  and Ubuntu.
  
  ProblemType: Bug
  DistroRelease: Ubuntu 19.10
  Package: zfsutils-linux 0.8.1-1ubuntu14.1
  ProcVersionSignature: Ubuntu 5.3.0-23.25-generic 5.3.7
  Uname: Linux 5.3.0-23-generic x86_64
  NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair
  ApportVersion: 2.20.11-0ubuntu8.2
  Architecture: amd64
  CurrentDesktop: ubuntu:GNOME
  Date: Tue Dec  3 13:35:08 2019
  InstallationDate: Installed on 2019-11-30 (3 days ago)
  InstallationMedia: Ubuntu 19.10 "Eoan Ermine" - Release amd64 (20191017)
  SourcePackage: zfs-linux
  UpgradeStatus: No upgrade log present (probably fresh install)
  modified.conffile..etc.sudoers.d.zfs: [inaccessible: [Errno 13] Permission 
denied: '/etc/sudoers.d/zfs']

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https://bugs.launchpad.net/bugs/1854982

Title:
  Lost compatibilty for backup between Ubuntu 19.10 and FreeBSD 12.0

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