-----Original Message----- From: IBM Mainframe Discussion List [mailto:[EMAIL PROTECTED] On Behalf Of R.S. Sent: Monday, August 28, 2006 2:47 PM To: [email protected] Subject: Re: JCL - Copy Tape
Thompson, Steve (SCI TW) wrote: > How did this tape get created? Was it created on a VSE system? If so not > all of the label information is filled out and so *YOU* have to supply > the actual physical record size (BLKSIZE) along with the other DCB info. > > UNLESS you are using LBI. In that case, the "LEGACY" BLKSIZE will be 0 > but the "new" data areas will be filled out. AFAIR the LBI does NOT change the meaning of existing fields. It simply *adds* new field (previously unused) as high-order bytes for BLKSIZE. So existing block size field still has a meaningful value. <snip> We have one guy who has been doing LBI and "huge" block/record support (I forgot the tech name for this). From his perspective it isn't that simple. He has seen the BLKSIZE field of the label be H'0' and then the new fields now contain data. This is probably going to have to mature a bit. Later, Steve Thompson ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
