ubuntu-phone team mailing list archive

[Marcos Alonso <corrosab@xxxxxxxxx>]

Hi Oliver.

Thanks for your feedback too.

I see moving to UMS is not that easy.

I will work with the issue source (my PC).

It was not a matter of speed, etc. Just connect or not connect issue.

And yes, I also use WifiTransfer but is a little bit invonvenient with
large files as if the screen switches off, the file transfer stops!

Thanks anyway!
Regards



El sábado, 30 de enero de 2016, Oliver Grawert <ogra@xxxxxxxxxx> escribió:
> hi,
> Am Samstag, den 30.01.2016, 12:20 +0100 schrieb Marcos Alonso:
>> Hi to all.
>>
>> Any of you know if it is feasible to connect to the PC through the USB
>> cable using UMS (USB Mass Storage) instead of MTP (Media Transfer
>> Protocol)?
>>
>> I know MTP has some benefits in terms of safety but I jst connect to
>> my PC and I' m tired of how bad MTP performs in Linux.
>>
> UMS means you need to have your disk formatted with a filesystem the
> connected PC knows (so if you want to be windows compatible you need to
> use vfat or NTFS, if you want to be windows and mac compatible only vfat
> is left). while it might work for devices with SD card to export the
> card, it wouldnt work for directories in your home dir (vfat does for
> example not support symlinks, so you couldnt just format the home
> partition with it, many things would stop working then).
>
> android used work around this by creating virtual sdcards that are vfat
> formatted and (loop)mounted ... now that they switched to MTP nearly
> everywhere they have to carry that hackish legacy forever (apps use the
> sdcard path hardcoded for their data etc. to keep them running you need
> to keep the mess around) at a high maintenance cost.
>
> MTP should not be any slower than UMS though, they are both rather
> hardware bound wrt. speed (i.e. as fast as the USB connection). if you
> really expect issues with MTP here you can enable developer mode to use
> adb push to compare the speed and actually file a bug about MTP if you
> find they differ much.
>
> assuming you have wifi where your PC is connected i'd suggest to take a
> look at stuart langridges WifiTransfer from the app store (you need to
> move the data around afterwards with the file manager though if you want
> it in a common dir like "Music" or "Videos" but depending on your
> network it is likely a lot faster than USB).
>
> ciao
>         oli
>
>
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