rbd - input/output error

[Mario van der Linde <linde@b1-systems.de>]

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Hello,

i'm playing around with ceph and set up a cluster with 5 nodes. cephfs
is working fine, but if i try to use rbd i get the following error:

> ceph1:~ # modprobe rbd
> ceph1:~ # rbd create testimg --size 10240
> create error: error 5: Input/output error
> ceph1:~ # ceph --version
> ceph version 0.37 (commit:a6f3bbb744a6faea95ae48317f0b838edb16a896)

There are no log messages that give me a hint whats going wrong.

Does anybody know what the cause of this error is?

Here is the ceph.conf used for this cluster:
> [global]
>         log dir = /srv/ceph/out
>         logger dir = /srv/ceph/log
>        ; chdir = ""
>         pid file = /srv/ceph/out/$type$id.pid
> [mds]
>         pid file = /srv/ceph/out/$name.pid
>        ; lockdep = 1
>        ; debug ms = 1
>        ; debug mds = 20
>        ; mds log max segments = 2
>        max mds = 3
> [osd]
>        ; lockdep = 1
>        ; debug ms = 1
>        ; debug osd = 25
>        ; debug journal = 20
>        ; debug filestore = 10
>         osd data = /srv/ceph/dev/osd$id
>         osd journal = /srv/ceph/dev/osd$id/journal
>         osd journal size = 512
> [mon]
>        lockdep = 1
>        debug mon = 20
>        debug paxos = 20
>        debug ms = 1
>        mon data = "/srv/ceph/dev/mon$id"
> [mon.1]
>        host = ceph1
>        mon addr = 192.168.1.221:6789
> [mon.2]
>        host = ceph2
>        mon addr = 192.168.1.222:6789
> [mon.3]
>        host = ceph3
>        mon addr = 192.168.1.223:6789
> ;[mon.4]
> ;       host = ceph4
> ;       mon addr = 192.168.1.224:6789
> ;[mon.5]
> ;       host = ceph5
> ;       mon addr = 192.168.1.225:6789
> [osd.1]
>        host = ceph1
>        btrfs devs = /dev/sda6
> [osd.2]
>        host = ceph2
>        btrfs devs = /dev/sda6
> [osd.3]
>        host = ceph3
>        btrfs devs = /dev/sda6
> [osd.4]
>        host = ceph4
>        btrfs devs = /dev/sda6
> [osd.5]
>        host = ceph5
>        btrfs devs = /dev/sda6
> [mds.0]
>        host = ceph1
> [mds.1]
>        host = ceph2
> [mds.2]
>        host = ceph3


Greetings
Mario

-- 

Mario van der Linde                  Geschaeftsfuehrer: Ralph Dehner
Linux Consultant & Trainer           Unternehmenssitz:  Vohburg
B1 Systems GmbH                      Amtsgericht:       Ingolstadt
Osterfeldstraße 7                    Handelsregister:   HRB 3537
85088 Vohburg                        http://www.b1-systems.de
Mobil: +49 151 168 794 85
EMail: linde@b1-systems.de

http://pgpkeys.pca.dfn.de/pks/lookup?op=get&search=0xD31B76884480BB04


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