I can't find it anymore, but I had an exec that I used to copy large numbers of DASD. Basically you could define as many "worker" machines as you wanted. create a file with the dasd addresses and current volsers. * each machine reads the file. * If a "from" address was attached to anyone, then that address was already being copied. * it has no volser, then it is already copied * Once you got an address that was ready to copy, search through a range of new address, if it was attached to someone, then it was already being used. if it had a volser, then it was already copied. * copy the disk * clip the volser on the original. Rinse and repeat.
On Fri, Jun 20, 2008 at 2:20 PM, Michael Coffin <[EMAIL PROTECTED]> wrote: > Hi Ann, > > You definitely want your Linux guests DOWN for this important move. > Likewise, log off all virtual machines other than the one(s) doing the > DDR'ing. I don't know how many spindles you have, but DDR disk to disk is > pretty fast, and if you fire up a dozen or more slaves to do the work you'll > be done in no time. > > -Mike > > -----Original Message----- > *From:* The IBM z/VM Operating System [mailto:[EMAIL PROTECTED] *On > Behalf Of *Smith, Ann (ISD, IT) > *Sent:* Friday, June 20, 2008 10:40 AM > *To:* IBMVM@LISTSERV.UARK.EDU > *Subject:* Moving zVM systems( with linux guests) to new dasd > > We are going to be moving our zVM systems to new IBM dasd (DS8300). > In past dasd migrations we had used REXX execs and some assembler code to > basically DDR all volumes from the old dasd to the new. > > We would shutdown the system and run the DDR's from one of the other VM > systems. > The zOS dasd is being moved as well and TDMF is going to be used. > Apparently TDMF can copy the dasd while the systems are up. > > But we were told there is no TDMF for VM. > For VM systems with linux guests it will take a while to do DDR's. We may > do linux guests individually (shorter outage windows). > > My question is about best practices for dasd migration for zVM systems with > linux guests. > My gut feeling is you still would want the linux guest down while dasd is > copied. We mainly have ext3 filesystems. > Is there any TDMF in the works for zVM (or some other method of copying > while systems are up)? > Do folks define full pack minidisks? Or is it still best to shutdown the > linux servers? > Looking for suggestions from others who may have gone through this > process. > > > Ann Smith > Mainframe Systems Support -zVM and zLinux Support > Integrated Technology Delivery > IBM Global Service Integrated Operations At The Hartford > Work phone: 860-547-6110 > Pager: 800-204-6367 > Email: *mailto:[EMAIL PROTECTED] <[EMAIL PROTECTED]> > > > > > ************************************************************************* > This communication, including attachments, is > for the exclusive use of addressee and may contain proprietary, > confidential and/or privileged information. If you are not the intended > recipient, any use, copying, disclosure, dissemination or distribution is > strictly prohibited. If you are not the intended recipient, please notify > the sender immediately by return e-mail, delete this communication and > destroy all copies. > ************************************************************************* > > -- Mark Pace Mainline Information Systems
