I hate walking down the road with rose colored glasses on. I'm mostly a gloom and doom type person myself.
What hardware did you have that had that problem and how was it connected (escon, ficon, fcp)? What Linux distribution did you have and what level? What service pack? What filesystem were you on? What type of minidisk did you use (partical pack, full pack, full pack minus 1 cyl)? I'm looking to find out if I'm setting myself up for a big fall in the future. Perhaps I've been on a very narrow path that wont be around much longer, or I'm on the main path with everyone else. I don't have a real need at this point, but my mental image is I can copy the Linux images anywhere I want as long as I'm 3390 minidisks. So far, I can be very conservitive about dasd as I'm not pushing the I/Os to the max. I still tend to use EXT3 as there "were" many reported problems about the newer filesystems "but then, that has been a while ago". What are we doing different, that you had problems moving Linux minidisks? Up to now, I would have made a blank statement that there are no problems in moving VM minidisks from one hardware to another, as long as they are the same device type. Tom Duerbusch THD Consulting >>> [EMAIL PROTECTED] 2/20/2007 10:38 AM >>> On 2/20/07, Stephen Frazier <[EMAIL PROTECTED]> wrote: > The point he was trying to make is that a lot of people think that it is true. Ok, this is probably about "half full" vs "half empty" glasses... > [EMAIL PROTECTED] wrote: > >> Life with Linux ended up less ideal, for various reasons (mostly > >> political, imho). We now find that z/VM reveals way to much details > >> about the real system to the guest, and Linux code deals with those > >> details as if it were running on bare metal. And everyone thinks that > >> it is normal that you would need to upgrade all your Linux virtual > >> machines just because you moved their mini disks from one DASD > >> subsystem to the other. > > > > The above is not true. I migrated Suse 7, Suse8 and Suse 9 images that > > were on minidisks residing on a combination of MP3000 Internal Dasd and > > Ramac Dasd Subsystem to DS6800. 3390 minidisks to 3390 minidisks. > > Linux didn't know or cared a thing about it. I am happy to see that it worked for Tom. And that's how it should be. What bothers me is that it does not always work like that. Linux does know about the difference (because such intimate details are passed along in RDC for example) and I recall cases where Linux fixes were required when you moved your mini disks from one type of ESS to the next. And IMHO that is *not* how it should be. 3390 is 3390 and let VM handle any subtleties where needed. Rob ---------------------------------------------------------------------- For LINUX-390 subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390 ---------------------------------------------------------------------- For LINUX-390 subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390
