libmtp error copying big files

[Sergio Cazzolato]

An error message is shown when trying to copy a file of 3GB from my ubuntu desktop to my krillin phone using Nautilus.

Steps to reproduce:
1. Plug a krillin device
2. Create a file with > dd if=/dev/urandom of=/tmp/bigfile.txt bs=1024 count=3000000
3. Using Nautilus, copy the file to the Documents directory in the device

In my machine it is happening that after that 2.1 GB are copied the process does not copy more content and an error screen appears (see atached). The error displayed is: "libmtp error: Could not send object"

The free space in my device is about 3.7 GB
My desktop os: Ubuntu 15.04
My krilling version is: 58 (rc-proposed)

[Pat McGowan (pat-mcgowan)]

We have an MR for this at https://code.launchpad.net/~mathieu-tl/mtp/file-sizes/+merge/263248
as it was previously reported in a private bug at https://bugs.launchpad.net/barajas/+bug/1455464

[Pat McGowan (pat-mcgowan)]

I tried matheiu's branch and I also bumped the storage allocation from 2GB to 4GB, no difference. The _IOW call always returns -1 when it hits a size greater than 31 bits or 2GB. The sizes passed in the mtp_file_range are correct.

[Selene ToyKeeper (toykeeper)]

I copied a 4.3 GiB file to an arale with this fix, via gmtp, and it worked well with matching md5sums before and after. So, it looks like it's fixed. :)

[Javier Ibáñez (javier-ibanez)]

Hi all,

Tested on fw Ubuntu 15.04 (r10) HD and Ubuntu 15.04 (r14) FHD, the issue is already fixed.

Thanks.

BR