At 09:07 PM 4/12/2007, Charles Mills wrote: >[...snip...] >Does anyone know if EOV breaks a CCW chain? If the software is writing a >chain of (say) 5 blocks, and EOV is detected during the writing of the >second block, does it break the chain? Does I/O error recovery have to >re-issue the EXCP for the last three blocks, presumably on the new volume?
As I recall, the channel program ends on the write CCW that encounters the end-of-tape "reflector." The CSW has Unit Exception and the address+8 of the last CCW executed. Its up to the access method (or a program using EXCP) to drive EOV processing (which writes the trailer labels, switches to a new volume and writes new header labels there) and then include any unwritten blocks in the first channel program constructed for the new volume. ERP never gets involved, since this is not considered an error. ================================================== Art Celestini Celestini Development Services Phone: 201-670-1674 Wyckoff, NJ ============= http://celestini.com ============= Mail sent to the "From" address used in this post will be rejected by our server. Please send off- list email to: ibmmain<at-sign>celestini<dot>com. ================================================== ---------------------------------------------------------------------- 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
