I noticed there is also a problem with redirecting to /dev/null, somehow: # uname -a Linux sdeziel-desktop 5.11.0-27-generic #29~20.04.1-Ubuntu SMP Wed Aug 11 15:58:17 UTC 2021 x86_64 x86_64 x86_64 GNU/Linux # zfs send -I data/simon/musique@laptop-2020-11-30 data/simon/musique@o > /dev/null internal error: Invalid argument Aborted (core dumped) # dmesg -c [ 747.837066] kernel write not supported for file /null (pid: 10174 comm: zfs)
Writing to a pipe works though: # zfs send -I data/simon/musique@laptop-2020-11-30 data/simon/musique@o | wc -c 5660616 -- 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/1939302 Title: hwe-5.11 regression: zfs send core dump Status in zfs-linux package in Ubuntu: New Bug description: With HWE kernel (5.11.0-25.27~20.04.1): # zfs send -w -I data/home/sdeziel@autosnap_2021-08-05_00:00:03_daily data/home/sdeziel@syncoid_sdeziel-desktop_2021-08-07:10:14:24 > /dev/null internal error: Invalid argument Aborted (core dumped) # zfs send -w -nvI data/home/sdeziel@autosnap_2021-08-05_00:00:03_daily data/home/sdeziel@syncoid_sdeziel-desktop_2021-08-07:10:14:24 send from @autosnap_2021-08-05_00:00:03_daily to data/home/sdeziel@syncoid_sdeziel-desktop_2021-08-07:10:14:24 estimated size is 274M total estimated size is 274M Switching back to the 5.8 kernel works: # uname -a Linux sdeziel-desktop 5.8.0-63-generic #71~20.04.1-Ubuntu SMP Thu Jul 15 17:46:08 UTC 2021 x86_64 x86_64 x86_64 GNU/Linux # zfs send -w -nvI data/home/sdeziel@autosnap_2021-08-05_00:00:03_daily data/home/sdeziel@syncoid_sdeziel-desktop_2021-08-07:10:14:24 send from @autosnap_2021-08-05_00:00:03_daily to data/home/sdeziel@syncoid_sdeziel-desktop_2021-08-07:10:14:24 estimated size is 274M total estimated size is 274M # zfs send -w -I data/home/sdeziel@autosnap_2021-08-05_00:00:03_daily data/home/sdeziel@syncoid_sdeziel-desktop_2021-08-07:10:14:24 > /dev/null # echo $? 0 Additional information: $ lsb_release -rd Description: Ubuntu 20.04.2 LTS Release: 20.04 $ apt-cache policy linux-image-5.11.0-25-generic linux-image-5.11.0-25-generic: Installed: 5.11.0-25.27~20.04.1 Candidate: 5.11.0-25.27~20.04.1 Version table: *** 5.11.0-25.27~20.04.1 500 500 http://us.archive.ubuntu.com/ubuntu focal-updates/main amd64 Packages 500 http://security.ubuntu.com/ubuntu focal-security/main amd64 Packages 100 /var/lib/dpkg/status $ apt-cache policy zfsutils-linux zfsutils-linux: Installed: 0.8.3-1ubuntu12.12 Candidate: 0.8.3-1ubuntu12.12 Version table: *** 0.8.3-1ubuntu12.12 500 500 http://us.archive.ubuntu.com/ubuntu focal-updates/main amd64 Packages 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://us.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/1939302/+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
