files disappeared only on ver 5.0.1 (256 MiB Piece size)

[ABU3BGE]

qBittorrent & operating system versions

qBittorrent: 5.0.1_x64
Operating system: windows 10

What is the problem?

after the update some files disappeared but when i downgrade to 4.6.7 it comes back ,
and when i try to add .torrent file of them in 5.0.1 i get failed to add reason invalid piece size [libtorrent:48]

Steps to reproduce

No response

Additional context

No response

Log(s) & preferences file(s)

Failed to add torrent Reason: "invalid piece size [libtorrent:48]"

[stalkerok]

Piece size 256MiB is no longer supported.

[ABU3BGE]

Piece size 256MiB is no longer supported.

what is the 256 mb size ?
and what can i do ?

[thalieht]

what is the 256 mb size ?

In General tab you see: Pieces: A x B.
B is the torrent's piece size.

and what can i do ?

Nothing.

[qBittUser]

What is the 256 mb size?

It's the piece size, open your qBittorrent, click on a transfer and look at what's written in the torrent info.

Files you download are split into pieces and torrent files contain hash info of each piece, otherwise it will be hard to verify efficiently, early and quickly enough if the data you send or receive is 100% correct.

What can I do?

• Ignore it?
• Contact torrent file creator to stop creating torrent files with such big piece size?
• Keep on using old qBittorrent version?
• Try different torrenting clients?
• Wait whenever newer libtorrent and qBittorrent version gets better compatibility or at least a better error message to be more obvious what's the issue.
• Waste time with figuring out how to unofficially and prematurely modify various latest versions code yourself to allow loading torrent files that aren't properly supported by many torrenting clients.
• Look at the pinned issue in GitHub and subscribe to it, to get notified if one major partially related issue gets fixed.
• Crash when checking torrent with piece size of 256.0 MiB #21011

[alessiot89]

bump. it it possible to re-add 256MB piece size? they are really needed for archiving proposal torrents, and this change is a breaking change for already existing 256MB torrents.

[xavier2k6]

@ABU3BGE @alessiot89

Use qBittorrent 5.1.0 libtorrent 2.x based build (lt20) https://www.qbittorrent.org/download#windows

• It'll support the loading/re-checking of torrents with 256 MiB Piece size but will not allow their creation via qBittorrent's own in-built torrent creator. (It's limited to 128 MiB due to crashes/incompatibility with libtorrent 1.x)

If any of you can provide a working public link of a torrent with 256 MiB piece size to re-confirm, that'd be most appreciated.