Comment 0 for bug 702309

My machine ran out of hard drive space and I noticed that I had 1343 files (22 GB in total size) in /tmp. All of the files were named like tmpXXXXXX, e.g. tmpzwFV1p. Running lsof reviled that the the files were created (and kept open) by the process "ubuntuone".

Background:
I'm running Lucid with all updates and I have a paid 4x20GB U1 account with 20GB+ of stuff and I recently added a folder (~/Kuvat) with 40 GB of files that has uploaded only partially. Account registered to otto at sange.fi.

Analysis:
I restarted my machine (and Linux automatically cleans up the /tmp directory) and documented what happens:
1. When the computer starts, the contents of /tmp is normal.
2. When the computer is on, u1sdtool -s starts with State: LOCAL_RESCAN
3. Then u1sdtool -s shows State: SERVER_RESCAN
4. Then u1sdtool -s shows State: QUEUE_MANAGER
5. At this point just one file is created /tmp/tmpCb3SoN. When the state is QUEUE_MANAGER, uploading should happen and u1sdtool --waiting-content lists 6000+ files, but there is no outgoing network traffic.
6. After a few hours the uploading finally starts. Outgoing network traffic is at level 120-150 KB/s.
7. At the same time more and more files start to appear in /tmp directory. See how it grows by looking at http://otto.kekalainen.net/u1-bugs/tmp-files0.txt, http://otto.kekalainen.net/u1-bugs/tmp-files1.txt, http://otto.kekalainen.net/u1-bugs/tmp-files2.txt and http://otto.kekalainen.net/u1-bugs/tmp-files3.txt.
8. lsof | grep tmp/tmp proves the files are opened by process ubuntuone. See how it grows in http://otto.kekalainen.net/u1-bugs/lsof01.txt and http://otto.kekalainen.net/u1-bugs/lsof02.txt
9. Finally the filesystem gets full. Listing http://otto.kekalainen.net/u1-bugs/filesystem-full.txt reveals also the file sizes. They seem to match the file size of files in ~/Kuvat.
10. Now u1sdtool --waiting-content shows only one file at the time:
otto@shuttle:/tmp$ u1sdtool --waiting-content
operation='Upload' node_id='81ca5875-91a3-4b49-827f-48aad081f1fb' share_id='492ae22d-006c-4044-b457-e0a6b6a9ceca' path='/home/otto/Kuvat/2010-marraskuu/IMG_3590.JPG'
otto@shuttle:/tmp$ u1sdtool --waiting-content
operation='Upload' node_id='6c1e799d-4584-4164-9c62-262053688138' share_id='492ae22d-006c-4044-b457-e0a6b6a9ceca' path='/home/otto/Kuvat/Sekalaista/Joulu 2008/00115.jpg'
otto@shuttle:/tmp$ u1sdtool --waiting-content
operation='Upload' node_id='ae9f7fd2-bff6-48d9-8508-0a8e6e0b831b' share_id='492ae22d-006c-4044-b457-e0a6b6a9ceca' path='/home/otto/Kuvat/Sekalaista/Pariisi 2009/IMG_8016.JPG'
11. However when I open at one.ubuntu.com > My Storage / ~/Kuvat / Sekalaista / Joulu 2008, there is no file 00115.jpg
12. Network traffic shows that uploading is happening.
13. Some other programs start to bug when the filesystem is full. Computer becomes unusable.