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operations: ignore size of objects when they are < 0 #320

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This allows google docs to be transferred and checked correctly.
This commit is contained in:
Nick Craig-Wood
2018-01-31 16:15:30 +00:00
parent 44276db454
commit 8df78f2b6d
3 changed files with 67 additions and 30 deletions
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39
docs/content/drive.md
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@@ -382,13 +382,20 @@ see User rate limit exceeded errors, wait at least 24 hours and retry.
You can disable server side copies with `--disable copy` to download
and upload the files if you prefer.
#### Limitations of Google Docs ####
Google docs will appear as size -1 in `rclone ls` and as size 0 in
anything which uses the VFS layer, eg `rclone mount`, `rclone serve
XXX`. This is because rclone can't find out the size of the Google
Documents until they are downloaded. An unfortunate consequence of
this is that you can't download Google docs using `rclone mount` - you
will get a 0 sized file. If you try again the doc may gain its
correct size and be downloadable.
anything which uses the VFS layer, eg `rclone mount`, `rclone serve`.
This is because rclone can't find out the size of the Google docs
without downloading them.
Google docs will transfer correctly with `rclone sync`, `rclone copy`
etc as rclone knows to ignore the size when doing the transfer.
However an unfortunate consequence of this is that you can't download
Google docs using `rclone mount` - you will get a 0 sized file. If
you try again the doc may gain its correct size and be downloadable.
### Duplicated files ###
@@ -406,23 +413,9 @@ Android duplicates files on drive sometimes.
### Rclone appears to be re-copying files it shouldn't ###
There are two possible reasons for rclone to recopy files which
haven't changed to Google Drive.
The first is the duplicated file issue above - run `rclone dedupe` and
check your logs for duplicate object or directory messages.
The second is that sometimes Google reports different sizes for the
Google Docs exports which will cause rclone to re-download Google Docs
for no apparent reason. `--ignore-size` is a not very satisfactory
work-around for this if it is causing you a lot of problems.
### Google docs downloads sometimes fail with "Failed to copy: read X bytes expecting Y" ###
This is the same problem as above. Google reports the google doc is
one size, but rclone downloads a different size. Work-around with the
`--ignore-size` flag or wait for rclone to retry the download which it
will.
The most likely cause of this is the duplicated file issue above - run
`rclone dedupe` and check your logs for duplicate object or directory
messages.
### Making your own client_id ###