I made a test install today and noticed that the attachments I was sending to bug reports were corrupt. After downloading them, I found out they seemed to have been truncated to 64 KiB!
- why is that?
- is there a way to remove that limit or change it? Could not find any, and if there is, it should be in the admin control panel too.
- how are files actually stored? I searched in all the folders, and could not find traces of the JPG and EXE I sent.

ok, I see that attachments are saved directly into mysql, and bugzilla does that too, and that I need to set max_allowed_packet=1M

However, bugdar's code seems to have something in place to tell me that my attachments were to big, but I was never notified of that. It's a bug.

My mysql server was set to 16M by default. In this case, I don't understand why bugdar truncated the attachments.

I have this error as well, and haven't been able to find a fix.

Does anyone have a workaround?

2 years later, same bug... I upload attachments, if it is an image you can't see the whole image... if it is a ZIp or RAR... when downloading it only downloads 64kb.
:(

OK. Apparently the solution is:

Going to the table Attachments and change the type of the field "attachment" from BLOB" to "MEDIUMBLOB".
Somebody just fixed it in our server..

Miry, you're absolutely right. The documentation states that BLOB has a capacity of 2^16 bytes, while MEDIUMBLOB has 2^24.