Change temporary copy behaviour

[donselmo]

qBittorrent version and Operating System:

3.3.13 on Windows 10 x64 Pro

What is the problem:

I have fiber internet (1gigabit), so I using a ramdisk for temporary folder avoid HDD stress and I/O limit. Because of the speed, I often got bad pieces so I set on the verify after download option. The problem is, after the download is complete, files copied the destination folder, then verified. Verify get some missing pieces - usually couple of MiB - so copy back the whole torrent, redownload missing pieces, then copy it's destination folder and verify again. This could be insane if you have only 1 HDD and your torrent is some BD with ~50 GiB and you got an useless PC for 30 min because of copying and recopying. I have 3 HDD and using a ramdisk, but my PC still slowing down. This was my first problem.
The second is the half downloaded paused torrents. Because of the ramdisk, I often got the problem to remove some slow torrents and use the fast ones. If I uncheck temporary folders, all files copied it's destination folder. Thats good. But if I recheck, all - even paused - torrents begin to copy itself to the temporary folder. Thats made useless a ramdisk.

What is the expected behavior:

1. Verify before copy, only copy destination folders, when verify got 100% torrent state.

2. Paused torrents do not use the temporary folder and/or the option to set every torrent to exclude the temporary folder and use only it's destination folder.

[zeule]

To your first concern I would like to note that you show a quite specific use-case. I believe most of the users want verification to be done with the final set of files (in the final destination directory) because those are the files they want to keep.

[donselmo]

I agree, most users are probably never use both option. I'm not a programmer, but I think it's just a small work to change the sequence and do verify before copy. And in rare case's it will be good for SSD's lifetime by avoiding unnecessary copy.
And sorry, but I dont get your second tought. If you use the temp folder, qB use only that, and move the files to the destination folder only when the download is 100% complete. Assuming that copy is always 100% safe, there is no difference verify before or after that move.
Or I just misleading you, because qB is using my language and I just translate "verify", and the proper english name of the option is: Recheck torrents on completion so it's obviously happening after all the files are downloaded 100%

[zeule]

… and do verify before copy.

My point is that most of the users want verify to be done after copying.

Assuming that copy is always 100% safe…

Well, every piece is checked when received. so downloading in this scheme is 100% safe too.

[glassez]

How about #7137?

[glassez]

Please see also #7164.