manjaro：ZFSプールは起動時にマウントされませんが（zfs-import-cache / zfs-mountを使用）、zfs-import-cacheを手動で実行しても問題ありません。

要約：

• zfs-import-cache/zfs-mountが有効になっていても、起動中にZFSプールがマウントまたはインポートされません。
• lsmod/journalctlをチェックしてください。 ZFSモジュールがロードされました。
• systemctl restart zfs-import-cacheおよびsystemctl restart zfs-mountを実行してZFSプールを手動でインポートまたはマウントするのに問題はありません。

以下は、問題を調査するために実行したいくつかのコンソールコマンドです（サーバーを再起動した後にのみ、ジャーナルctlコマンドにzfsエントリが含まれていました）。

➜  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  -