How much network bandwidth do you have between the Linux LPAR and the Linux Guest, compared to how much data you need to move?
Mark Post -----Original Message----- From: Linux on 390 Port [mailto:[EMAIL PROTECTED] On Behalf Of James Melin Sent: Friday, October 08, 2004 8:45 AM To: [EMAIL PROTECTED] Subject: Moving an LPAR Linux to VM - Problem Hello learned list members... got a good one for you. Once upon a time, when we first built Linux, we went with LPAR mode because this was strictly under the radar. I was given some disk, and as it turns out, our Storage Administrator at the time fat-fingered the amount of space for the 'mod-9' volumes, and we had 10116 cyl volumes instead of 10016 cyl. So my volumes were 100 cyl 'fat'. We found this out at a Disaster recovery exercise. Anyway, an attempted solution was to re-allocate the space for the linux partion to be slightly less than a real mod 9. 150250 tracks, I believe. We were still doing full volume backups on those because we hadn't discovered the 'tracks' option for dfsms. We have the following situation. 1) We cannot define the 'fat' mod 9's to VM. Or at least we don't know how. When we tried that with one that was empty, we were unable to get VM to recognized the disk with 10116 cyls. They worked if we just told it they were 10016 cyls. That said, I cannot simply put those devices in the VM configuration and mount them for copy of the file system to new disk. Conversely, the Linux LPAR's are device restricted, in that they cannot see all of the disk farm. They are also on a different mainframe(z/800 - VM on z/900), though the disk is shared. I'm told dynamically adding mod 9 disk that z/VM knows about to the z/800 is not possible, so I cannot mount those volumes and do a disk copy. I attempted to do a 'tracks' backup of the disk volume to just cover the tracks where the z/linux file system was residing and then restore it to disk that VM can use via z/os. That didn't seem to work. I didn't get a mountable file system on the VM defined disk under a freshly defined linux guest. The only thing I can think of is try to find a mod 9 or two that the z/800 Lpar, and VM Lpar can all see, and do something like locally mount the mod-9, copy the file system and then attempt to mount it under a vm linux guest. If anyone else has an idea, I'm all ears. This pretty much took my entire day yesterday, trying different variations on this. ---------------------------------------------------------------------- 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
