> THis is basically the same problem as using a backup of one machine to > run on another machine. There are potential issues: The biggest one is > that the drivers for the disk controllers for the new "target" machine > need to be available in the "initrd" file on the old "source" machine > or its backup. Anything else can be managed by someone at the console > after the system boots successfully. You can do that in advance by > looking at the "target" machine's > > The relevant controller drivers, especially for SCSI controllers, used > to be in /etc/modprobe.conf, but that changed with the 6.x releases, > and I've not poked the new modprobe structure.
>From observation, the initial RAM disk image on SL/RHEL 6.x includes all the storage drivers by default (it's a lot bigger than the 5.x images). In fact, I believe it includes a lot more, as I found out when troubleshooting a machine that reset during the initial boot due to an oddball graphics configuration. It is possible (using dracut) to build an image that _only_ has the drivers for the machine you're on. > SL 5 and its like used to leave the old > /etc/sysconfig/network-scripts/iccfg-* files in place, with the wrong > MAC addresses, which simply needed to be corrected and the network > restarted. SL 6 is using this "UUID" setting to identify particular > devices consistently, which I've not personally played with. You may > need to reset those manually with the "system-config-network" tool, if > this is just a one-off job The one time I did this with '6 it made new ethN devices for the NICs on the new box, which I then just configured with the proper parameters. I'm always flummoxing the Windows guys when I say I just have to restore the backup to another machine, using a live CD, and everything works :). I've even got some scripts on that CD so it's almost an automatic disaster-recovery. - Bluejay Adametz, CFII, A&P, AA-5B N45210 Definition of Hardware: Part of computer system that can be kicked when broken. NOTICE: This message, including any attachments, is only for the use of the intended recipient(s) and may contain confidential and privileged information, or information otherwise protected from disclosure by law. If the reader of this message is not the intended recipient, you are hereby notified that any use, disclosure, copying, dissemination or distribution of this message or any of its attachments is strictly prohibited. If you received this message in error, please contact the sender immediately by reply email and destroy this message, including all attachments, and any copies thereof.
