For reasons I do not understand, the kernel was not upgraded with the `dist-upgrade` meant to lift me from groovy to hirsute. Neither my shell-history nor the apt-logs contain any hint of a removal of the "versionless" `linux-image-generic` package.
With proper 5.11 in place, `zfs send`s work again. The issue is definitely not with the zfs packages. I do not have any idea how to trace the root-cause further and suggest to close the issue. -- 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/1926284 Title: `zfs send`dry-run estimation (`-n`) (perhaps more) broken Status in zfs-linux package in Ubuntu: New Bug description: Calling `zfs send -v` is used for size estimation, it is expected to return (called on focal here) ```bash [cjr@hoare:/home/cjr] $ zfs send -n -v stank/backup/mccarthy/rpool/USERDATA/<...>@zrepl-20210426_094232_000 full send of stank/backup/mccarthy/rpool/USERDATA/<...>@zrepl-20210426_094232_000 estimated size is 126G total estimated size is 126G ``` On hirsute, this feature is broken and returns ```bash [cjr@mccarthy:/home/cjr] $ /usr/sbin/zfs send -n -v rpool/USERDATA/<...>@zrepl-20210427_103846_000 warning: cannot send 'rpool/USERDATA/<...>@zrepl-20210427_103846_000': Unknown error 103 ``` which breaks my backup. Considering that it worked fine with focal and groovy, I suspect the upgraded zfs packages to be at fault (although I am not sure which of these). Thanks for your consideration. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/zfs-linux/+bug/1926284/+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
