zpool list NAME SIZE ALLOC FREE EXPANDSZ FRAG CAP DEDUP HEALTH ALTROOT bpool 496M 122M 374M - 18% 24% 1.00x ONLINE - rpool 39.2G 5.18G 34.1G - 19% 13% 1.00x ONLINE - zfs list NAME USED AVAIL REFER MOUNTPOINT bpool 122M 246M 96K / bpool/BOOT 121M 246M 96K none bpool/BOOT/ubuntu 121M 246M 120M legacy rpool 5.18G 32.8G 96K / rpool/ROOT 4.90G 32.8G 96K none rpool/ROOT/ubuntu 4.90G 32.8G 4.60G / rpool/home 94.3M 32.8G 96K /home rpool/home/dbergst 94.1M 32.8G 90.4M /home/dbergst rpool/home/root 116K 32.8G 116K /root rpool/opt 11.0M 32.8G 11.0M /opt rpool/srv 96K 32.8G 96K /srv rpool/tmp 292K 32.8G 160K legacy rpool/usr 232K 32.8G 96K /usr rpool/usr/local 136K 32.8G 136K /usr/local rpool/var 170M 32.8G 96K /var rpool/var/cache 146M 32.8G 146M /var/cache rpool/var/games 96K 32.8G 96K /var/games rpool/var/lib 288K 32.8G 96K /var/lib rpool/var/lib/docker 96K 32.8G 96K /var/lib/docker rpool/var/lib/nfs 96K 32.8G 96K /var/lib/nfs rpool/var/log 23.2M 32.8G 21.8M legacy rpool/var/mail 96K 32.8G 96K /var/mail rpool/var/snap 96K 32.8G 96K /var/snap rpool/var/spool 168K 32.8G 112K legacy rpool/var/tmp 208K 32.8G 120K legacy rpool/var/www 96K 32.8G 96K /var/www zfs get all bpool NAME PROPERTY VALUE SOURCE bpool type filesystem - bpool creation Sat Apr 27 22:20 2019 - bpool used 122M - bpool available 246M - bpool referenced 96K - bpool compressratio 1.08x - bpool mounted no - bpool quota none default bpool reservation none default bpool recordsize 128K default bpool mountpoint / local bpool sharenfs off default bpool checksum on default bpool compression lz4 local bpool atime on default bpool devices off local bpool exec on default bpool setuid on default bpool readonly off default bpool zoned off default bpool snapdir hidden default bpool aclinherit restricted default bpool createtxg 1 - bpool canmount off local bpool xattr sa local bpool copies 1 default bpool version 5 - bpool utf8only on - bpool normalization formD - bpool casesensitivity sensitive - bpool vscan off default bpool nbmand off default bpool sharesmb off default bpool refquota none default bpool refreservation none default bpool guid 11010012457975961225 - bpool primarycache all default bpool secondarycache all default bpool usedbysnapshots 0B - bpool usedbydataset 96K - bpool usedbychildren 122M - bpool usedbyrefreservation 0B - bpool logbias latency default bpool dedup off default bpool mlslabel none default bpool sync standard default bpool dnodesize legacy default bpool refcompressratio 1.00x - bpool written 0 - bpool logicalused 131M - bpool logicalreferenced 40K - bpool volmode default default bpool filesystem_limit none default bpool snapshot_limit none default bpool filesystem_count none default bpool snapshot_count none default bpool snapdev hidden default bpool acltype posixacl local bpool context none default bpool fscontext none default bpool defcontext none default bpool rootcontext none default bpool relatime on local bpool redundant_metadata all default bpool overlay off default zfs get all rpool NAME PROPERTY VALUE SOURCE rpool type filesystem - rpool creation Sat Apr 27 22:21 2019 - rpool used 5.18G - rpool available 32.8G - rpool referenced 96K - rpool compressratio 1.58x - rpool mounted no - rpool quota none default rpool reservation none default rpool recordsize 128K default rpool mountpoint / local rpool sharenfs off default rpool checksum on default rpool compression lz4 local rpool atime on default rpool devices off local rpool exec on default rpool setuid on default rpool readonly off default rpool zoned off default rpool snapdir hidden default rpool aclinherit restricted default rpool createtxg 1 - rpool canmount off local rpool xattr sa local rpool copies 1 default rpool version 5 - rpool utf8only on - rpool normalization formD - rpool casesensitivity sensitive - rpool vscan off default rpool nbmand off default rpool sharesmb off default rpool refquota none default rpool refreservation none default rpool guid 12751051842868483442 - rpool primarycache all default rpool secondarycache all default rpool usedbysnapshots 0B - rpool usedbydataset 96K - rpool usedbychildren 5.18G - rpool usedbyrefreservation 0B - rpool logbias latency default rpool dedup off default rpool mlslabel none default rpool sync standard default rpool dnodesize auto local rpool refcompressratio 1.00x - rpool written 0 - rpool logicalused 7.59G - rpool logicalreferenced 40K - rpool volmode default default rpool filesystem_limit none default rpool snapshot_limit none default rpool filesystem_count none default rpool snapshot_count none default rpool snapdev hidden default rpool acltype posixacl local rpool context none default rpool fscontext none default rpool defcontext none default rpool rootcontext none default rpool relatime on local rpool redundant_metadata all default rpool overlay off default Output from updating grub application: Setting up grub-common (2.02+dfsg1-12ubuntu3) ... Installing new version of config file /etc/grub.d/10_linux ... Setting up grub2-common (2.02+dfsg1-12ubuntu3) ... Setting up grub-pc-bin (2.02+dfsg1-12ubuntu3) ... Setting up grub-pc (2.02+dfsg1-12ubuntu3) ... Installing for i386-pc platform. Installation finished. No error reported. Sourcing file `/etc/default/grub' Sourcing file `/etc/default/grub.d/init-select.cfg' Generating grub configuration file ... Warning: Failed to find a valid directory 'boot' for dataset 'rpool/ROOT/ubuntu'. Ignoring Warning: Ignoring rpool/ROOT/ubuntu Warning: Failed to find a valid directory 'boot' for dataset 'rpool/ROOT/ubuntu@20190624'. Ignoring Warning: Ignoring rpool/ROOT/ubuntu@20190624 awk: line 14: syntax error at or near [ awk: line 24: syntax error at or near [ awk: line 27: syntax error at or near } awk: line 89: syntax error at or near [ awk: line 93: syntax error at or near [ Found memtest86+ image: /BOOT/ubuntu@/memtest86+.elf Found memtest86+ image: /BOOT/ubuntu@/memtest86+.bin device-mapper: reload ioctl on osprober-linux-sda4 failed: Device or resource busy Command failed.