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In general, updating the flexVDI packages when a new version is published is as easy as running yum update on your hosts. However, updating some packages can cause the guest virtual machines to be stopped. Read on for more details.


One of the components of flexVDI suite is a kernel module called kmod-ocfs2-flexvdi.
In Red Hat based Linux distributions where flexVDI software is installed, the kernel package is special because several versions of it can be installed at the same time on the same machine. Almost every other package can only have one single version installed at a given time, and kmod-ocfs2-flexvdi is no exception. But kernel modules, like kmod-ocfs2-flexvdi, are developed for one specific kernel version. To be able to have several kmod-ocfs2-flexvdi packages installed at the same time for different kernels, we publish kmod-ocfs2-flexvdi-k514.x86_64, kmod-ocfs2-flexvdi-k693.x86_64, kmod-ocfs2-flexvdi-k862.x86_64, ... and so on, as different packages, instead of being different versions of the same package.

First we can see what is the This is an example of how you would update the kernel and kmod-ocfs2-flexvdi packages. First you can see the version of the currently running kernel with:

Code Block
# uname -r

So we currently use In the example, the current kernel in use is 3.10.0-693. Now we you can check if there are is a new kernels kernel available:

Code Block
#yum --showduplicates list kernel


Installed Packages
kernel.x86_64 3.10.0-514.el7 @anaconda
kernel.x86_64 3.10.0-693.17.1.el7 @updates 
Available Packages
kernel.x86_64 3.10.0-862.el7 base 
kernel.x86_64 3.10.0-862.2.3.el7 updates 
kernel.x86_64 3.10.0-862.3.2.el7 updates 
kernel.x86_64 3.10.0-862.3.3.el7 updates 
kernel.x86_64 3.10.0-862.6.3.el7 updates 
kernel.x86_64 3.10.0-862.9.1.el7 updates 
kernel.x86_64 3.10.0-862.11.6.el7 updates

So a new version 3.10.0-862 is available, and we you may decide that we you want to install it. Now we will you can get a list of the available kmod-ocfs2-flexvdi packages:

Code Block
# yum search kmod-ocfs2-flexvdi

Loaded plugins: fastestmirror


======================================= N/S matched: kmod-ocfs2-flexvdi =======================================
kmod-ocfs2-flexvdi.x86_64 : OCFS2 driver module
kmod-ocfs2-flexvdi-k514.x86_64 : OCFS2 driver module
kmod-ocfs2-flexvdi-k693.x86_64 : OCFS2 driver module
kmod-ocfs2-flexvdi-k862.x86_64 : OCFS2 driver module

So kmodkmod-ocfs2-flexvdi-k862.x86_64  64 is the name of the kmod  package that matches the kernel 3.10.0-862 that we you want to install. kmod-ocfs2-flexdi-k862 package depends on kernel, so we you can install  install both of them at the same time with the command:

Code Block
# yum install kmod-ocfs2-flexvdi-k862
Package Arch Version Repository Size
kernel x86_64 3.10.0-862.11.6.el7 updates 46 M
kmod-ocfs2-flexvdi-k862 x86_64 1.5.0-1.el7 flexvdi 508 k
replacing kmod-ocfs2-flexvdi.x86_64 1.5.0-693.el7
flexvdi noarch 3.0-2.el7 flexvdi 2.0 k
Is this ok [y/d/N]:


Now that the new kernel is installed, we have to reboot the machine so that it starts using it.