z/VSE Service: FILE PROTect error with z/VM 6.4
Ingolf24 120000DRN3 Visits (4630)
If the VTOC is placed at the end of a volume, z/VSE might get a FILE PROTect error on z/VM 6.4, if STP_STIMESTAMPING is enabled in the z/VM system.
This issue is resolved with
z/VM 6.4 APAR VM66104 (PTF UM35279): Z/VSE GUEST FAILS WITH UNIT CHECK/FILE PROTECT ERROR
Error description: z/VSE guest program failing with Unit Check and sense indicating File Protect error. This fails only on 640. Previous releases report Unit Check with End of Cylinder.
As a workaround disable STP_TIMESTAMPING and instead enable STP_TIMEZONE in z/VM, if STP is required for time zone synchronization only in that particular z/VM system (not guest).