On Thursday, 12/03/2015 at 09:53 GMT, Rick Troth <[email protected]> wrote: > MVS should grow up.
No, Linux should obey the IBM VOL1 label standard when using ECKD devices, just like everyone else. In fact, if I were asked (I haven't been), I would suggest that it use the CPVOLUME format. That's one that MVS already recognizes, and whose reactions Certain People are expending effort to improve upon. Alternatively, Linux could obtain, via IBM channels, an official VOL1 standard version ID. E.g. one that has zeroes in the VTOC address indicating no VTOC. If there were no VTOC, then a volumes could be entirely formatted with 4K records. The label is defined in the VOL1 label standard to be a *minimum* of 80 bytes. It can be 4096. It's the VTOC that's creates the problem. All of the OSes would have to recognize it since "version number" is part of the standard, specifically designed for building interoperable labels. Alan Altmark Senior Managing z/VM and Linux Consultant Lab Services System z Delivery Practice IBM Systems & Technology Group ibm.com/systems/services/labservices office: 607.429.3323 mobile; 607.321.7556 [email protected] IBM Endicott ---------------------------------------------------------------------- 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 more information on Linux on System z, visit http://wiki.linuxvm.org/
