-Original Message-
From: Jens Kristian Søgaard [mailto:j...@mermaidconsulting.dk]
Sent: 02 July 2013 20:27
To: Howarth, Chris [CCC-OT_IT]
Cc: ceph-us...@ceph.com
Subject: Re: [ceph-users] Use of RDB Kernel module
Hi Chris,
Does this then mean that I cannot access these block devices from
Hi Chris,
[root@ock tmp]# rbd list bash: rbd: command not found...
Do I also need to install the Ceph packages to use rbd ?
Yes, you will need Ceph installed to be able to use user-space commands
like the rbd tool.
Also how
does the client know how to connect to the cluster ? Should
Many thanks Jens - much appreciated
Chris
-Original Message-
From: Jens Kristian Søgaard [mailto:j...@mermaidconsulting.dk]
Sent: 03 July 2013 10:04
To: Howarth, Chris [CCC-OT_IT]
Cc: ceph-us...@ceph.com
Subject: Re: [ceph-users] Use of RDB Kernel module
Hi Chris,
[root@ock tmp]# rbd
Hi - I am quite new to Ceph and would be grateful if you could explain a couple
of items as these are not immediately clear to me from the Ceph documentation:
1) My Ceph cluster is running on RHEL 6.4 (kernel 2.6.32). As such I cannot use
the RDB kernel module and so map block device images to
The ceph kernel module is only for mounting rbd block devices on bare metal
(technically you could do it in a vm but there is no good reason to do so).
QEMU/KVM has its own rbd implementation that tends to lead the kernel
implementation and should be used with vm's.
The rbd module is always
Hi Chris,
Does this then mean that I cannot access these block devices from
another server using libvirt/KVM ?
No, qemu-kvm implement user-space access to rados block devices via
librbd. So that will work fine even without the kernel module. Both
locally on Ceph osd/mon servers as well as
