grive randomly moving local files to .trash with message "change stamp = -1"

[Paulo Marcel Coelho Aragão]

grive is randomly moving local files to ~/Google Drive/.trash which have not been deleted from Google Drive, with a message like this for each one:

file "./flickr/Adriana Calcanhoto - Tema de Alice.mp3" change stamp = -1
file "./flickr/Adriana Calcanhoto - Tema de Alice.mp3" is deleted in local

Further down the log, I can see that grive then deletes them from Google Drive, with messages like this for each one:

sync "./flickr/Adriana Calcanhoto - Tema de Alice.mp3" deleted in local. deleting remote
HTTP GET "https://docs.google.com/feeds/default/private/full/file%3A0B6eQjhXV-AquV21aVDVaNzJmUDA"
HTTP response 200
HTTP DELETE "https://docs.google.com/feeds/default/private/full/file%3A0B6eQjhXV-AquV21aVDVaNzJmUDA"
HTTP response 200

On this last run, grive deleted 69 files, but on former runs it deleted a different number of files.

I haven't been able to pinpoint which event triggers this, it looks random to me. What is constant is: the files are always deleted from this folder:

drwxrwxr-x 2 paulo paulo 28672 Jan 22 17:33 /home/paulo/Google Drive/flickr

but each time different files are deleted. The files in this folder are static, I haven't changed them, deleted them nor added new files since I started keeping them in Google Drive.

At first I thought Google Drive, for some unknown reason, was itself deleting them. As ~/.grive-last-sync.log is overwritten every time grive runs, I couldn't catch the process on the spot. I had to set up inotify monitoring on ~/Google Drive/.trash, to be alerted whenever any files landed there, so that I could grab a copy of the last ~/.grive-last-sync.log file.

When this happens, I restore the files from Trash on Google Drive, move the local files back from ~/Google Drive/.trash, and run a manual sync just to make sure everything is OK. And it stays OK for an indefinite period, usually not more than one week, when grive suddenly out-of-the-blue deletes another batch of local files from ~/Google Drive/flickr.

What caught my attention was: I had indeed deleted local file ~/Google Drive/modelo declaração diabetes.doc, and grive logged a message exactly like the one logged for the files that were not deleted:

file "./modelo declaração diabetes.doc" change stamp = -1
file "./modelo declaração diabetes.doc" is deleted in local

grive version:

grive 0.3.0-1+git20131016~thefanclub~utopic5
grive-tools 1.12

Please let me know how can I assist in debugging this further.

[Paulo Marcel Coelho Aragão (marcelpaulo)]

Today grive deleted local files again, but not restricted to ~/Google Drive/flickr. I could see that it started deleting local files after this is logged:

Reading remote server file list
HTTP GET "https://docs.google.com/feeds/default/private/full?showfolders=true&showroot=true"
HTTP response 200

I scanned .grive-last-sync.log very closely and noticed references to files which I don't have and never had neither locally nor on Google Drive:

file "Steegle.com - Apps Script - Ad - Postage Stamp" parent doesn't exist, ignored
file "DVDs — R$ 10 cada" parent doesn't exist, ignored

All these symptoms give me the impression that grive somehow and sometimes gets a remote list of files from another Google account which is not mine.

Please let me know how can I assist in debugging this further.

PS: I have attached the .grive-last-sync.log related to this run.