Equivalent of IBM Spectrum Archive SDE 2.4.3.1 (10461)

IBM released IBM Spectrum Archive 2.4.3.1 (10461) at aa181ad. So the LTFS project releases new version 2.4.3.1.

Critical fix

IMPORTANT Notice

For the users of LTFS version 2.4.0 or above, it is highly recommended to upgrade the software to version 2.4.3.1 immediately. The problem was fixed into (#233, 303ca43). When the LTFS would truncate the files ion tape unexpectedly when LTFS receives a permanent write error at SCSI LOCATE command before SCSI WRITE command.

The scenario is

1. LTFS tries to write a data block of a file at the end of tape
2. LTFS issues LOCATE command to seek to the end of tape
3. LTFS receives a permanent write error against LOCATE command
4. LTFS looks this permanent write error as a a permanent write error against WRITE command and make error recovery
5. LTFS fetches the current position on the tape (the position is as same as the position before LOCATE command is issued because it fails)
6. LTFS clear all extents larger than current position
7. LTFS tries to seek to the append position of the index partition
8. The file truncation would be completed when this seek is successfully done (At the most cases this seek wouldn't success but we have a few possibility)
9. LTFS would write the current cleaned index on the index partition and the file truncation is completed

Change Log:

• Fix exceeded extent cleaning when a write perm returns against LOCATE before write operation
• For problem fixes that were reported in the previous versions:
  • See aa181ad..1121daa