<div dir="ltr">I have been using Ksplice, which is free for Fedora 19 & 20 but not for Centos/Red Hat systems as it is owned by Oracle. The only reason I am using it is to have a look at Dynamic Kernel Patching prior to Kpatch being eventually released for production as this would be great for KVM hosts and virtual machines where you did not have to reboot everything after a kernel update.<div>
<br></div><div><a href="http://rhelblog.redhat.com/2014/02/26/kpatch/">http://rhelblog.redhat.com/2014/02/26/kpatch/</a><br></div><div><br></div><div>So far everything has been OK where all the kernel patches has been applied live until recently when the latest patch would not update.</div>
<div><br></div><div><a href="http://www.securelist.com/en/advisories/59029" target="_blank">http://www.securelist.com/en/advisories/59029</a><br>
</div><div><br></div><div>Ksplice gave the reason that it could not install the update because one or more programs are constantly using the kernel functions patched by this update and gave me the list of the programs running. On the list was libvirtd, you cannot stop this service if this is being used for the running of virtual machines (catch 22). It also mentioned mysqld which was weird as I don't have this running.</div>
<div><br></div><div>$ systemctl status mysqld</div><div><br></div><div>gave me output:</div><div><br></div><div><div>mysqld.service - MariaDB database server</div><div> Loaded: loaded (/usr/lib/systemd/system/mysqld.service; disabled)</div>
<div> Active: inactive (dead)</div></div><div><br></div><div>It looks like I will just have to download the kernel update and reboot.</div><div><br></div><div>Has anyone else been using Ksplice and ran into this problem? </div>
<div><br></div><div>Gordon <br><div dir="ltr">
<div><a href="http://www.zubenel.org.uk" target="_blank">www.zubenel.org.uk</a><br></div></div></div></div>