Same problem here. But I think the transfer is correct: root@vs-uefi:/home/volker# zfs version zfs-0.8.3-1ubuntu12.12 zfs-kmod-2.0.2-1ubuntu5
root@vs-uefi:/home/volker# zfs send -i vs2016/source@1 vs2016/source@2 | zfs receive -vFs zfshome/source receiving incremental stream of vs2016/source@2 into zfshome/source@2 snap zfshome/source@2 already exists; ignoring cannot receive: failed to read from stream cannot receive incremental stream: dataset does not exist root@vs-uefi:/home/volker# zfs list -t snapshot vs2016/source NAME USED AVAIL REFER MOUNTPOINT vs2016/source@1 72K - 6,07M - vs2016/source@2 4,21G - 4,21G - root@vs-uefi:/home/volker# zfs list -t snapshot zfshome/source NAME USED AVAIL REFER MOUNTPOINT zfshome/source@1 18K - 6,28M - zfshome/source@2 0B - 4,25G - -- 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/1939177 Title: Ubuntu 20.04.2 LTS kernel 5.11.0-25 zfs send | receive broken Status in zfs-linux package in Ubuntu: Confirmed Bug description: https://github.com/openzfs/zfs/issues/12462 Ubuntu 20.04.2 LTS Kernel: 5.11.0-25-generic #27~20.04.1-Ubuntu zfs-0.8.3-1ubuntu12.12 zfs-kmod-2.0.2-1ubuntu5 Trying to run zfs send | receive and getting an error: # zfs send 'rpool/home'@'autosnap_2020-08-01_00:59:01_monthly' | zfs receive -s -F 'nas/rpool_backup/home' cannot receive: failed to read from stream cannot receive new filesystem stream: dataset does not exist This used to work before the recent Ubuntu kernel update from 5.8 to 5.11 Kernel 5.8 came with zfs-kmod-0.8.4-1ubuntu11.2 Ubuntu updates that broke it: Upgrade: linux-headers-generic-hwe-20.04:amd64 (5.8.0.63.71~20.04.45, 5.11.0.25.27~20.04.10), linux- image-generic-hwe-20.04:amd64 (5.8.0.63.71~20.04.45, 5.11.0.25.27~20.04.10), linux-generic-hwe-20.04 :amd64 (5.8.0.63.71~20.04.45, 5.11.0.25.27~20.04.10) Sending the zfs send part to a file works, but then sending the file to zfs receive also fails. The dump file size seems reasonable but the contents may not be correct. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/zfs-linux/+bug/1939177/+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
