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STATUS_SETMARK_DETECTED
A tape operation reached a setmark
Setmarks are tape markers distinct from filemarks and are supported only by some drives and media formats. Windows exposes separate write and spacing methods for setmarks, allowing an application to build higher-level groups of tape files.
The result should be interpreted with the drive capability flags and the backup format in use. Software that never writes setmarks can treat an unexpected one as evidence of foreign media or a positioning mismatch, but it should preserve the location before moving the tape.
What to inspect
- Check whether the drive reports setmark support and reporting capability.
- Capture partition and logical position before issuing another SPACE operation.
- Compare the marker with the media catalog and backup-set layout.
References
- Microsoft: ntddtape.h tape interfaces
- Microsoft: TAPE_SET_POSITION
- Seagate: SCSI Commands Reference Manual
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