SOLVED Import ZFS Pool with missing LOG device -> missing device

[JayanWarden]

Hello everyone,

after somehardware failure I need to import my old ZFS pool on a new Server with the Log devices missing.
However, zpool import -f return the following error message:

zpool import -f pool: Transfer id: 17969070376272401836 state: UNAVAIL status: The pool was last accessed by another system. action: The pool cannot be imported due to damaged devices or data. see: http://zfsonlinux.org/msg/ZFS-8000-EY config: Transfer UNAVAIL missing device raidz2-0 ONLINE sde ONLINE sdf ONLINE sdc ONLINE sdd ONLINE sdb ONLINE

now at first I didn't see which devices are responsible for the error message "missing device".
But then it occurred to me that I had configured a mirrored log device for this pool.
I tried the following commands to no avail:

zpool import -f
zpool import -fF
zpool import -fm
zpool import -f -m
zpool import -fFX
zpool import -fFX -m
zpool import -fmFX

zdb gives the following information:

Show : Long text

Code:

Configuration for import:
        vdev_children: 2
        version: 5000
        pool_guid: 17969070376272401836
        name: 'Transfer'
        state: 0
        hostid: 2424241580
        hostname: ''
        vdev_tree:
            type: 'root'
            id: 0
            guid: 17969070376272401836
            children[0]:
                type: 'raidz'
                id: 0
                guid: 15604554527484725918
                nparity: 2
                metaslab_array: 42
                metaslab_shift: 38
                ashift: 12
                asize: 39997054648320
                is_log: 0
                create_txg: 4
                children[0]:
                    type: 'disk'
                    id: 0
                    guid: 14877975940621952018
                    whole_disk: 1
                    DTL: 427
                    create_txg: 4
                    path: '/dev/sde2'
                children[1]:
                    type: 'disk'
                    id: 1
                    guid: 7682865178649624056
                    whole_disk: 1
                    DTL: 161
                    create_txg: 4
                    path: '/dev/sdf2'
                children[2]:
                    type: 'disk'
                    id: 2
                    guid: 16365352912611834826
                    whole_disk: 1
                    DTL: 425
                    create_txg: 4
                    path: '/dev/sdc2'
                children[3]:
                    type: 'disk'
                    id: 3
                    guid: 8090733727149963468
                    whole_disk: 1
                    DTL: 424
                    create_txg: 4
                    path: '/dev/sdd2'
                children[4]:
                    type: 'disk'
                    id: 4
                    guid: 1792929707086124561
                    whole_disk: 1
                    DTL: 423
                    create_txg: 4
                    path: '/dev/sdb2'
            children[1]:
                type: 'missing'
                id: 1
                guid: 0
        rewind-policy:
            rewind-request-txg: 18446744073709551615
            rewind-request: 2

MOS Configuration:
        version: 5000
        name: 'Transfer'
        state: 0
        txg: 5645149
        pool_guid: 17969070376272401836
        hostid: 2424241580
        hostname: ''
        com.delphix:has_per_vdev_zaps
        vdev_children: 2
        vdev_tree:
            type: 'root'
            id: 0
            guid: 17969070376272401836
            children[0]:
                type: 'raidz'
                id: 0
                guid: 15604554527484725918
                nparity: 2
                metaslab_array: 42
                metaslab_shift: 38
                ashift: 12
                asize: 39997054648320
                is_log: 0
                create_txg: 4
                com.delphix:vdev_zap_top: 36
                children[0]:
                    type: 'disk'
                    id: 0
                    guid: 14877975940621952018
                    path: '/dev/gptid/ae7282f0-ce7d-11e7-b88e-ac1f6b1d1286'
                    whole_disk: 1
                    DTL: 427
                    create_txg: 4
                    com.delphix:vdev_zap_leaf: 37
                children[1]:
                    type: 'disk'
                    id: 1
                    guid: 7682865178649624056
                    path: '/dev/gptid/e2376a92-3c65-11e9-9b53-ac1f6b1d1286'
                    whole_disk: 1
                    DTL: 161
                    create_txg: 4
                    com.delphix:vdev_zap_leaf: 160
                children[2]:
                    type: 'disk'
                    id: 2
                    guid: 16365352912611834826
                    path: '/dev/gptid/b04e806f-ce7d-11e7-b88e-ac1f6b1d1286'
                    whole_disk: 1
                    DTL: 425
                    create_txg: 4
                    com.delphix:vdev_zap_leaf: 39
                children[3]:
                    type: 'disk'
                    id: 3
                    guid: 8090733727149963468
                    path: '/dev/gptid/b0fa2215-ce7d-11e7-b88e-ac1f6b1d1286'
                    whole_disk: 1
                    DTL: 424
                    create_txg: 4
                    com.delphix:vdev_zap_leaf: 40
                children[4]:
                    type: 'disk'
                    id: 4
                    guid: 1792929707086124561
                    path: '/dev/gptid/b1f286b6-ce7d-11e7-b88e-ac1f6b1d1286'
                    whole_disk: 1
                    DTL: 423
                    create_txg: 4
                    com.delphix:vdev_zap_leaf: 41
            children[1]:
                type: 'mirror'
                id: 1
                guid: 17628069014945562014
                metaslab_array: 89
                metaslab_shift: 26
                ashift: 12
                asize: 8585216000
                is_log: 1
                create_txg: 157600
                com.delphix:vdev_zap_top: 49
                children[0]:
                    type: 'disk'
                    id: 0
                    guid: 9523356891319150884
                    path: '/dev/ada0p1'
                    whole_disk: 1
                    DTL: 422
                    create_txg: 157600
                    com.delphix:vdev_zap_leaf: 50
                children[1]:
                    type: 'disk'
                    id: 1
                    guid: 10486496941185256776
                    path: '/dev/ada1p1'
                    whole_disk: 1
                    DTL: 421
                    create_txg: 157600
                    com.delphix:vdev_zap_leaf: 51
        features_for_read:
            com.delphix:hole_birth
            com.delphix:embedded_data

So I guess I can't import because
children[1]:
type: 'missing'
id: 1
guid: 0
are missing.

But why doesn't -m work? The two missing devices were merely Log devices, why doesn't ZFS want to import the pool when I specify -m and -X (and any combination of recovery flags) ?
Is my pool doomed? all pool data drives are definitely available and in working condition.


Thanks for reading, help greatly appreciated!

 

[JayanWarden]

Edit:
Apparently you have to specify the ZFS Pool to import with the import command.

In my case,

Code:

zpool import -f -F -m Transfer

did the trick!

Topic can be closed.

 

[danb35]

OpenZFS on Linux

Native port of ZFS to Linux.

zfsonlinux.org

Why did you post this here in the first place? It clearly has nothing to do with FreeNAS.

 

[digity]

Edit:
Apparently you have to specify the ZFS Pool to import with the import command.

In my case,

Code:

zpool import -f -F -m Transfer

did the trick!

Topic can be closed.

Thanks! This worked for me too!