Reading dat tapes via dds#388
Open
dericed wants to merge 4 commits into
Open
Conversation
READ CAPACITY is not a valid command for sequential-access devices, so the drive's capacity/geometry can no longer be queried the same way once tape is a supported device type. Move the Inquiry call ahead of the capacity query so device_type is known before deciding which capacity command to issue, then branch: - Non-tape: unchanged READ CAPACITY path. - Tape: call the new scsiInitiatorSequencialReadBlockLimits() to get min/max block size and whether it's fixed, then set the density code via scsiInitiatorSequencialSetDensityCode() before transfer. Also skip SD image preallocation for tape, since block limits give no indication of total medium length, and preallocating would either be wrong or impossible to size correctly. This is a refactor of existing capacity-detection logic combined with the minimum new logic required to make it tape-aware; no unrelated changes are included.
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
2 participants
Add this suggestion to a batch that can be applied as a single commit.This suggestion is invalid because no changes were made to the code.Suggestions cannot be applied while the pull request is closed.Suggestions cannot be applied while viewing a subset of changes.Only one suggestion per line can be applied in a batch.Add this suggestion to a batch that can be applied as a single commit.Applying suggestions on deleted lines is not supported.You must change the existing code in this line in order to create a valid suggestion.Outdated suggestions cannot be applied.This suggestion has been applied or marked resolved.Suggestions cannot be applied from pending reviews.Suggestions cannot be applied on multi-line comments.Suggestions cannot be applied while the pull request is queued to merge.Suggestion cannot be applied right now. Please check back later.
intended to supersede #321