Nick Craig-Wood 18ccf0f871 vfs: detect and recover from a file being removed externally from the cache
Before this change if a file was removed from the cache while rclone
is running then rclone would not notice and proceed to re-create it
full of zeros.

This change notices files that we expect to have data in going missing
and if they do logs an ERROR recovers.

It isn't recommended deleting files from the cache manually with
rclone running!

See: https://forum.rclone.org/t/corrupted-data-streaming-after-vfs-meta-files-removed/18997
Fixes #4602
2020-09-18 10:30:02 +01:00
..
2019-04-15 21:49:58 +01:00