On Wed, Oct 14, 2009 at 2:36 PM, Ron Loftin <reloftin at twcny.rr.com> wrote: > > I have some customer machines that have not been updated for some time, > and are still on CentOS 5.2. While reading the release notes for 5.4, I > have not yet seen anything that looks like it needs attention, but are > there any known issues or "gotchas" related to moving directly from 5.2 > to 5.4? > > Comments, pointers, things to look for are all welcome. > On a few virtual systems I moved directly from 5.2 stock to 5.3 completely updated. There were no issues to speak of except that I ran out of space in /var and had some trouble with the LVMs not resizing properly. In short, I had to take the system down to single user mode to unmount /var and resize the journal. Once that was complete, the update went fine. I did have a glitch some months ago moving from a 5.2 with some minor patches to 5.3. I lost the network connections to the Xen virtual systems and found out that the default MAC address of the virtual ethernet conflicted with the hardware address of the Linksys adapter. Moving from 5.2 to 5.4 may hit the same issue.