TLDR:
- ZFS pool is not mounted/imported during boot even though zfs-import-cache/zfs-mount have been enabled
- looking at lsmod/journalctl, the ZFS module has been loaded
- no problem manually importing/mounting the ZFS pool by running systemctl restart zfs-import-cache and systemctl restart zfs-mount
Here's some console commands that I ran to try and investigate the issue (the journalctl command only includes the zfs entry after I restarted the server)
➜ ssh [email protected] [email protected]'s password: Welcome to fish, the friendly interactive shell Type help for instructions on how to use fish myuser@myserver ~> zpool list no pools available myuser@myserver ~> zpool status no pools available myuser@myserver ~> zdb storage-myserver: version: 5000 name: 'storage-myserver' state: 0 txg: 1375447 pool_guid: 617472370471881449724 errata: 0 hostname: 'myserver' com.delphix:has_per_vdev_zaps vdev_children: 1 vdev_tree: type: 'root' id: 0 guid: 6172370456471881449724 create_txg: 4 children[0]: type: 'raidz' id: 0 guid: 1748034220473493990457 nparity: 2 metaslab_array: 138 metaslab_shift: 34 ashift: 13 asize: 48009362538496 is_log: 0 create_txg: 4 com.delphix:vdev_zap_top: 129 children[0]: type: 'disk' id: 0 guid: 1391340476743518267315 path: '/dev/sdb' whole_disk: 1 DTL: 5027 create_txg: 4 com.delphix:vdev_zap_leaf: 130 children[1]: type: 'disk' id: 1 guid: 1784473315434353960342 path: '/dev/sdd' whole_disk: 1 DTL: 5026 create_txg: 4 com.delphix:vdev_zap_leaf: 131 children[2]: type: 'disk' id: 2 guid: 1148923454936736091715 path: '/dev/sdf' whole_disk: 1 DTL: 5025 create_txg: 4 com.delphix:vdev_zap_leaf: 132 children[3]: type: 'disk' id: 3 guid: 1382088269334592035142 path: '/dev/sdh' whole_disk: 1 DTL: 5024 create_txg: 4 com.delphix:vdev_zap_leaf: 133 children[4]: type: 'disk' id: 4 guid: 18112733835124758481 path: '/dev/sdc' whole_disk: 1 DTL: 5023 create_txg: 4 com.delphix:vdev_zap_leaf: 134 children[5]: type: 'disk' id: 5 guid: 9964993604748294083 path: '/dev/sde' whole_disk: 1 DTL: 5022 create_txg: 4 com.delphix:vdev_zap_leaf: 135 children[6]: type: 'disk' id: 6 guid: 463127445797571349817 path: '/dev/sdg' whole_disk: 1 DTL: 5021 create_txg: 4 com.delphix:vdev_zap_leaf: 136 children[7]: type: 'disk' id: 7 guid: 754974834897868814160 path: '/dev/sdi' whole_disk: 1 DTL: 5020 create_txg: 4 com.delphix:vdev_zap_leaf: 137 features_for_read: com.delphix:hole_birth com.delphix:embedded_data myuser@myserver ~> systemctl status zfs-import-cache ○ zfs-import-cache.service - Import ZFS pools by cache file Loaded: loaded (/usr/lib/systemd/system/zfs-import-cache.service; enabled; vendor preset: enabled) Active: inactive (dead) Docs: man:zpool(8) myuser@myserver ~ [3]> systemctl status zfs-mount ○ zfs-mount.service - Mount ZFS filesystems Loaded: loaded (/usr/lib/systemd/system/zfs-mount.service; enabled; vendor preset: enabled) Active: inactive (dead) Docs: man:zfs(8) myuser@myserver ~ [3]> journalctl | grep -i zfs Jan 28 13:25:43 my-nas kernel: ZFS: Loaded module v2.1.2-1, ZFS pool version 5000, ZFS filesystem version 5 Jan 28 13:25:43 my-nas systemd-modules-load[323]: Inserted module 'zfs' myuser@myserver ~> lsmod | grep -i zfs zfs 3899392 0 zunicode 335872 1 zfs zzstd 577536 1 zfs zlua 184320 1 zfs zavl 16384 1 zfs icp 323584 1 zfs zcommon 102400 2 zfs,icp znvpair 106496 2 zfs,zcommon spl 118784 6 zfs,icp,zzstd,znvpair,zcommon,zavl myuser@myserver ~ [4]> sudo -i [sudo] password for myuser: [root@myserver ~]# systemctl restart zfs-import-cache [root@myserver ~]# systemctl restart zfs-mount [root@myserver ~]# zpool list NAME SIZE ALLOC FREE CKPOINT EXPANDSZ FRAG CAP DEDUP HEALTH ALTROOT storage-myserver 43.7T 18.1T 25.6T - - 0% 41% 1.00x ONLINE - [root@myserver ~]# reboot now Connection to 192.168.1.42 closed by remote host. Connection to 192.168.1.42 closed. mydesktop in ~ took 9m35s ➜ ssh [email protected] [email protected]'s password: Welcome to fish, the friendly interactive shell Type help for instructions on how to use fish myuser@myserver ~> sudo -i [sudo] password for myuser: [root@myserver ~]# systemctl restart zfs-import-cache [root@myserver ~]# systemctl restart zfs-mount [root@myserver ~]# zpool list NAME SIZE ALLOC FREE CKPOINT EXPANDSZ FRAG CAP DEDUP HEALTH ALTROOT storage-myserver 43.7T 18.1T 25.6T - - 0% 41% 1.00x ONLINE - 