Hi,
today I have found out that Ceph/RBD packages need to be installed on
the KVM machines. No further configuration (e.g. Keyring or Secret is
needed) is required. Moreover, librbd and librados where not up to date
to the pacific version as well. After the package installation, RBD pool
was found by Cloudstack and I can start using the storage.
Cheers
Mevludin
Am 24.09.2021 um 17:44 schrieb Anthony D'Atri:
It might be that Cloudstack doesn’t know how to handle an EC RBD pool? Given
your pool listing, I’m assuming that you’re using EC for data and the spari-rbd
pool is the replicated pool for metadata?
Check out this thread from last year
https://www.mail-archive.com/[email protected]&q=subject:%22Re%5C%3A+Cloudstack+%5C%2B+CEPH+and+Erasure+Coding%22&o=newest&f=1
Have you done
ceph osd pool application enable
ceph osd pool application set
to make the pool as RBD?
On Sep 23, 2021, at 3:08 AM, Mevludin Blazevic <[email protected]> wrote:
Hi everyone,
I've tried to connect my Ceph cluster to Cloudstack/KVM via the Management-GUI
using the RBD protocol, but I am getting the error that the rbd pool not
exists, although I have created such a rbd pool, initialized it and created a
user for the RBD pool. I have performed the steps described at
https://docs.ceph.com/en/pacific/rbd/rbd-cloudstack/.
I really do not know where I went wrong during the installation. As far as I
know, no preliminary configuration is needed on the KVM machines. QEMU/KVM and
libvirt installation was carried out while installing CloudStack. The
secret-xml should be created after typing the information on the GUI but
nothing happens. I am getting always the same error:
2021-09-23 11:53:57,737 ERROR [kvm.storage.LibvirtStorageAdaptor]
(agentRequest-Handler-5:null) (logid:699ed00c) Failed to create RBD storage
pool: org.libvirt.LibvirtException: failed to create the RBD IoCTX. Does the
pool 'sparci-rbd' exist?: No such file or directory
2021-09-23 11:53:57,738 ERROR [kvm.storage.LibvirtStorageAdaptor]
(agentRequest-Handler-5:null) (logid:699ed00c) Failed to create the RBD storage
pool, cleaning up the libvirt secret
While filling out the information on the GUI, I have picked a monitor node
which is documented under /etc/ceph/ceph.conf. Performing the ceph df command,
you can see that the rbd pool really exists:
--- POOLS ---
POOL ID PGS STORED OBJECTS ...
device_health_metrics 1 1 25 MiB 320 ...
sparci-ec 2 32 0 B 0 ...
sparci-rbd 3 32 19 B 1 ...
Have I missed out some extra installation steps needed on the ceph machines?
Cheers
Mevludin
--
Mevludin Blazevic
University of Koblenz-Landau
Computing Centre (GHRKO)
Universitaetsstrasse 1
D-56070 Koblenz, Germany
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Mevludin Blazevic, M.Sc.
University of Koblenz-Landau
Computing Centre (GHRKO)
Universitaetsstrasse 1
D-56070 Koblenz, Germany
Room A023
Tel: +49 261/287-1326
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