Transmission uses 100% CPU when downloading any file to a encrypted home

[Jonas G. Drange]

(Since https://bugs.launchpad.net/ubuntu/+source/ecryptfs-utils/+bug/431975 was closed, I am creating a new bug. This is not a duplicate of said bug.)

Adding any torrent (.torrent/magnet) in Transmission (2.61 (13407)) on Ubuntu 12.10 (fresh install) and downloading them to /home/$USER results in Transmission using 100% CPU and the system hanging/freezing up.

Changing the download folder to /tmp/something remedies this. I am unsure whether or not /tmp is unencrypted, probably not, but there is without a doubt a all the difference in the world between /home/ and /tmp/.

In my apport report, I am running 3.6.3, but I can reproduce this with 3.2.33.

[Ken Johnson (prak4242)]

I can confirm the same behaviour. Ubuntu 12.10, Transmission 2.61 (13407). Downloading a torrent to a location inside an encrypted home directory causes constant, massive CPU utilization - bringing the entire system almost to a halt. The problem is completely mitigated (doing the same downloads) by moving the download destination to a directory outside your encrypted home.

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Jason Xing (wlxing)]

Hi,

I've tried different ways to test on different machine. 1) ecryptfs-mount-private 2)sudo mount -t ecryptfs raw secure, one of them does work very well.I download a move torrent from firefox to the directory mounted already. I cannot reproduce it.

Jason

[Jason Xing (wlxing)]

I noticed that the bug is open about four years ago...