Revert "tsdfs"

This reverts commit ec23e4621bf651452a9753ff189e8cee4dd38a78.
Revert "Revert "tsdfs""

This reverts commit ec9b682e222e99424459ecb5f3878892f07524f7.
Revert "Revert "Revert "tsdfs"""

This reverts commit 033bdee56ac6a163b46e7286e7f730069a054c22.