Hum, just came across the same issue again: # modinfo zfs | head -2 filename: /lib/modules/4.15.0-43-generic/kernel/zfs/zfs/zfs.ko version: 0.7.5-1ubuntu16.4
# sync # echo 3 > /proc/sys/vm/drop_caches # zfs unmount -a # swapoff -a # zpool export WD4Gpool cannot export 'WD4Gpool': pool is busy # lsof nor fuser do not show anything related to the WD4Gpool mountpoints. # dmsetup table does not show anything related to ZFS as expected (I do not have the volume datasets) Please re-open this bug. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1667838 Title: zpool export mpu1pool cannot export 'mpu1pool': pool is busy To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/zfs-linux/+bug/1667838/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs