ERROR: modinfo: could not find module rbd FATAL

ERROR: modinfo: could not find module rbd FATAL

CENTOS 6.5 安装CEPH RDB 错误
ERROR: modinfo: could not find module rbd
FATAL: Module rbd not found.
rbd: modprobe rbd failed! (256)

rpm --import http://elrepo.org/RPM-GPG-KEY-elrepo.org
rpm -Uvh http://elrepo.org/elrepo-release-6-5.el6.elrepo.noarch.rpm
yum --enablerepo=elrepo-kernel install kernel-ml

编辑etc/grub.conf

将default = 1 改为default = 0

解决办法:
Once you have deployed the almighty CEPH storage, you will want to be able to actualy use it (RBD).

Before we begin, some notes:

Current CEPH version: 0.67 (“dumpling”).
OS: Centos 6.4 x86_64 (running some VMs on KVM, basic CentOS qemu packages, nothing custom)

Since CEPH RBD module was first introduced with kernel 2.6.34 (and current RHEL/CentOS kernel is 2.6.32) – that means we need a newer kernel.

So, one of the options for the new kernel is, 3.x from elrepo.org:

rpm --import http://elrepo.org/RPM-GPG-KEY-elrepo.org
rpm -Uvh http://elrepo.org/elrepo-release-6-5.el6.elrepo.noarch.rpm
yum --enablerepo=elrepo-kernel install kernel-ml # will install 3.11.latest, stable, mainline
# or
yum --enablerepo=elrepo-kernel install kernel-lt # will install 3.0.latest, long term supported

CentOS KVM and CEPH – client side setup
Posted on October 14, 2013 by andrijars · Leave a comment
Once you have deployed the almighty CEPH storage, you will want to be able to actualy use it (RBD).

Before we begin, some notes:

Current CEPH version: 0.67 (“dumpling”).
OS: Centos 6.4 x86_64 (running some VMs on KVM, basic CentOS qemu packages, nothing custom)

Since CEPH RBD module was first introduced with kernel 2.6.34 (and current RHEL/CentOS kernel is 2.6.32) – that means we need a newer kernel.

So, one of the options for the new kernel is, 3.x from elrepo.org:

rpm –import http://elrepo.org/RPM-GPG-KEY-elrepo.org
rpm -Uvh http://elrepo.org/elrepo-release-6-5.el6.elrepo.noarch.rpm
yum –enablerepo=elrepo-kernel install kernel-ml # will install 3.11.latest, stable, mainline
# or
yum –enablerepo=elrepo-kernel install kernel-lt # will install 3.0.latest, long term supported
If you want that new kernel to boot by default, edit /etc/grub.conf, and change the Default=1 to Default=0, and reboot.

That’s for the Kernel side.

If you want to use qemu with RBD, you will also need newer qemu packages – CEPH does provide some “untested”, “use it at your own risk” packages, that are rhel/centos based verions, just with RBD support added – well, running them on productional cloud, and all seems fine so far for me…

wget http://ceph.com/packages/ceph-extras/rpm/rhel6/x86_64/qemu-kvm-0.12.1.2-2.355.el6.2.cuttlefish.x86_64.rpm
wget http://ceph.com/packages/ceph-extras/rpm/rhel6/x86_64/qemu-img-0.12.1.2-2.355.el6.2.cuttlefish.x86_64.rpm
wget http://ceph.com/packages/ceph-extras/rpm/rhel6/x86_64/qemu-kvm-tools-0.12.1.2-2.355.el6.2.cuttlefish.x86_64.rpm

After done, in order to actually install those CEPH-provided versions of binaries, we need to download and install CEPH, that is the required libraries librados and librbd:

rpm --import 'https://ceph.com/git/?p=ceph.git;a=blob_plain;f=keys/release.asc'
rpm -Uvh http://ceph.com/rpm-dumpling/el6/noarch/ceph-release-1-0.el6.noarch.rpm
yum install ceph

If all fine (will not talk here about creating the /etc/ceph.conf file and keyring for the client – maybe another post), then we are ready to install CEPH version of qemu packages:

First, we need to remove the original packages from Centos 6, then install the new ones:

rpm -e --nodeps qemu-img
rpm -e --nodeps qemu-kvm
rpm -e --nodeps qemu-kvm-tools
rpm -Uvh qemu-*

And… that’s it. If you run the qemu-img | grep “Supported formats” you will see RBD as being one od those.
You may shutdown and restart all your existing VMs, in order to load the new qemu binaries.

posted on 2014-11-13 16:30 秦瑞It行程实录 阅读( ...) 评论( ...) 编辑 收藏

转载于:https://www.cnblogs.com/ruiy/p/4095284.html