File ... has disappeared before deletion

Support
#1

I have done the following:

  1. delete two snapshot folders from old machines
  2. run prune -all -exhaustive
  3. made sure no other backup is running and run prune with -exclusive flag.

Got massive number of logs like these (about 350 thousand)

File chunks/ba/36a42d624af8a58258ac049e1df6420a1bd7a6f51a62608688ec5d5a74ea2c.fsl has disappeared before deletion
The chunk ba36a42d624af8a58258ac049e1df6420a1bd7a6f51a62608688ec5d5a74ea2c has been permanently removed
File chunks/ba/d3b6236f3e37dad335c100d5ef12177839702decb29432c2ae20f6060bac3c.fsl has disappeared before deletion
The chunk bad3b6236f3e37dad335c100d5ef12177839702decb29432c2ae20f6060bac3c has been permanently removed
File chunks/ba/d4d3230c32bdf4b7f6ef25bf5bd16b84ece7100c6793f996494d520d2d707d.fsl has disappeared before deletion
The chunk bad4d3230c32bdf4b7f6ef25bf5bd16b84ece7100c6793f996494d520d2d707d has been permanently removed
File chunks/ba/84ca4d7142ac6f04f0634169b95eb0d53f1e8a446a57721f74899dd01237b5.fsl has disappeared before deletion
The chunk ba84ca4d7142ac6f04f0634169b95eb0d53f1e8a446a57721f74899dd01237b5 has been permanently removed
File chunks/ba/a93b8ba4764bb106e3105e342c2355248d44d07932ec120dae701d23238274.fsl has disappeared before deletion
The chunk baa93b8ba4764bb106e3105e342c2355248d44d07932ec120dae701d23238274 has been permanently removed
File chunks/ba/112922f602cbae42cd0be4a7021c57d906de32292f8065dc1c86fef7de61fd.fsl has disappeared before deletion
The chunk ba112922f602cbae42cd0be4a7021c57d906de32292f8065dc1c86fef7de61fd has been permanently removed
File chunks/ba/09999614d50d916da802e7225393cbe935f55b09ad0fc4b0690828e516727f.fsl has disappeared before deletion
The chunk ba09999614d50d916da802e7225393cbe935f55b09ad0fc4b0690828e516727f has been permanently removed
File chunks/ba/82f727bfabcc9be6aa340d281467e5e695636f241dc805552c946a9b86d3ab.fsl has disappeared before deletion
The chunk ba82f727bfabcc9be6aa340d281467e5e695636f241dc805552c946a9b86d3ab has been permanently removed
File chunks/ba/4480d0195cb28ff74f3f66a8c45c0de5330929f2c9a9c174a5f0f56f227a4b.fsl has disappeared before deletion
The chunk ba4480d0195cb28ff74f3f66a8c45c0de5330929f2c9a9c174a5f0f56f227a4b has been permanently removed
File chunks/ba/3935df6e3c51c59ce1122c09714217a03684da88d15e941f7f54f88321781c.fsl has disappeared before deletion
The chunk ba3935df6e3c51c59ce1122c09714217a03684da88d15e941f7f54f88321781c has been permanently removed
File

I this normal?

#2

Only 2 backends can print out this message, sftp and Google Drive. Which backend is this?

#3

It’s sftp, to synology.