What causes this abend: SYBABE296E HIDRO INTERNAL ABEND "EC 5DF"
Article ID: 125000
CA VM:Backup for z/VMCA VM:Backup High-Speed Disaster Recovery Option (HiDRO)
Our Daily backup from last night issued a RC=16. SYBABE296E HIDRO INTERNAL ABEND "EC 5DF"
What is the cause of this abend or error message? Did it abend?
z/VSE an level VM:Backup (HIDRO) 2.8 and above
The "EC 5DF" indicates the FileSpace integraty was lost (the FileSpace changed) during the course of the backup. HiDRO holds the FileSpace catalog open during the backup which prevents this from happening.
The EC 5DF indicates HiDRO detected the FileSpace being backed up is corrupted ... the Catalog Data Pointer Blocks read from the catalog for the FileSpace when the backup started no longer match the data in the FileSpace when the Pointer Blocks are re-read from what was retrived to back up the data.
This will happen if the FileSpace has changed after the catlog information is read by HiDRO and before the FilesSpace backup completes.
However, this should never happen. HiDRO now opens the FileSpace catalog, and leaves the catalog open until the FileSpace backup is finished. SFS/IBM guarantees that holding the FileSpace catalog open while the backup is running will create a snapshot of the data and pointer blocks until the FileSpace Catalog is closed; the FileSpace will not change, any updates will be queued until the FileSpace Catalog is closed.
The fact that the EC 5DF occurred indicates that either the FileSpace was actually corrupted (which does not appear to be the case because when the backup was rerun, the FileSpace was successfully backed up), or that somehow the integrity of the FileSpace was not maintained while HiDRO had the FileSpace Catalog help open.
This is theoretically not a HiDRO problem, but rather a potential SFS problem.