The phenomena below may be a bug of insync, or one of Google Drive, but I will tell this as a bug report.
Recently, I moved my mail folder (mh-style) with 150,000 files to Google Drive. Syncing is mostly perfect, but it caused some troubles several times.
Most prominent bug is folder duplication. For example, the folder structure below
Mails — settings —±-- imapcache
|
±-- mimetmp
|
±-- newscache
|
±-- plugins
|
±-- templates
|
±-- tmp
|
±-- uidl
there is (are) several duplicate folders like
Mails — settings —±-- imapcache
|
±-- mimetmp
|
±-- mimetmp (2)
|
±-- newscache
|
±-- plugins
|
±-- templates
|
±-- templates (2)
|
±-- tmp
|
±-- uidl
|
±-- uidl (2)
This phenomena arbitrarily happens and cannot detect before syncing (Everytiime I noticed after syncing is starting and mail software shows abnormal behavior). Actually, I can see two (or more) folders with the same name are created in Google Drive (This is why Insync cannnot handle folders with same name and handle as adding “(2)” or “(3)” as a temporary measure).
However, I always use Insync to access to Google Drive from Linux (Ubuntu 16.04) and Windows (Windows 10 mostly, one Windows 7), and this phenomena is likely caused by some improper folder identification between Google Drive and Insync.
I checked many threads describing similar issues, and could not find the solution. It is really grateful if somebody show some tips or technique to avoid this folder duplication, or at least explain why this phenomena occurs.
Thank you.