Re: Issue about execute "ceph fs new"

[Eugen Block <eblock@xxxxxx>]

Hi,

you need to deploy more daemons because your current active MDS is  
responsible for the already existing CephFS. There are several ways to  
do this, I like the yaml file approach and increase the number of MDS  
daemons, just as an example from a test cluster with one CephFS I  
added the line "count_per_host: 2" to have two more daemons (one  
active, one standby for the new FS):

cat mds.yml
service_type: mds
service_id: cephfs
placement:
  hosts:
  - host5
  - host6
  count_per_host: 2

Then apply:

ceph orch apply -i mds.yaml

As soon as there are more daemons up, your second FS should become active.

Regards
Eugen


Zitat von elite_stu@xxxxxxx:

> Everything goes fine except execute "ceph fs new kingcephfs  
> cephfs-king-metadata cephfs-king-data", its shows 1 filesystem is  
> offline  1 filesystem is online with fewer MDS than max_mds.
> But i see there is one mds services running, please help me to fix  
> the issue, thanks a lot.
>
> bash-4.4$
> bash-4.4$ ceph fs new kingcephfs cephfs-king-metadata cephfs-king-data
> new fs with metadata pool 7 and data pool 8
> bash-4.4$
> bash-4.4$ ceph -s
>   cluster:
>     id:     de9af3fe-d3b1-4a4b-bf61-929a990295f6
>     health: HEALTH_ERR
>             1 filesystem is offline
>             1 filesystem is online with fewer MDS than max_mds
>
>   services:
>     mon: 3 daemons, quorum a,b,c (age 2d)
>     mgr: a(active, since 2d), standbys: b
>     mds: 1/1 daemons up, 1 hot standby
>     osd: 3 osds: 3 up (since 2d), 3 in (since 2d)
>     rgw: 1 daemon active (1 hosts, 1 zones)
>
>   data:
>     volumes: 2/2 healthy
>     pools:   14 pools, 233 pgs
>     objects: 592 objects, 450 MiB
>     usage:   1.5 GiB used, 208 GiB / 210 GiB avail
>     pgs:     233 active+clean
>
>   io:
>     client:   921 B/s rd, 1 op/s rd, 0 op/s wr
>
> bash-4.4$
>
>
> bash-4.4$ ceph fs status
> myfs - 0 clients
> ====
> RANK      STATE        MDS       ACTIVITY     DNS    INOS   DIRS   CAPS
>  0        active      myfs-a  Reqs:    0 /s    10     13     12      0
> 0-s   standby-replay  myfs-b  Evts:    0 /s     0      3      2      0
>       POOL         TYPE     USED  AVAIL
>  myfs-metadata   metadata   180k  65.9G
> myfs-replicated    data       0   65.9G
> kingcephfs - 0 clients
> ==========
>         POOL            TYPE     USED  AVAIL
> cephfs-king-metadata  metadata     0   65.9G
>   cephfs-king-data      data       0   65.9G
> MDS version: ceph version 17.2.5  
> (98318ae89f1a893a6ded3a640405cdbb33e08757) quincy (stable)
> bash-4.4$
> bash-4.4$
> bash-4.4$
> bash-4.4$
> bash-4.4$ ceph mds stat
> myfs:1 kingcephfs:0 {myfs:0=myfs-a=up:active} 1 up:standby-replay
> bash-4.4$
> bash-4.4$ ceph fs ls
> name: myfs, metadata pool: myfs-metadata, data pools: [myfs-replicated ]
> name: kingcephfs, metadata pool: cephfs-king-metadata, data pools:  
> [cephfs-king-data ]
> bash-4.4$
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