[tahoe-lafs-trac-stream] [tahoe-lafs] #1581: Trac file uploads/attachments failing

[tahoe-lafs]

#1581: Trac file uploads/attachments failing
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 Reporter:  warner              |          Owner:  zooko
     Type:  defect              |         Status:  new
 Priority:  major               |      Milestone:  soon (release n/a)
Component:  dev-infrastructure  |        Version:  n/a
 Keywords:                      |  Launchpad Bug:
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 Since the migration (and switching from Apache/mod_python to nginx/uwsgi),
 uploads of moderate-sized files are failing in weird ways. Small patches
 sometimes work, but larger patches fail in weird ways:

 * sirvaliance tried to upload a 600kB .png to #1185 and observed reported
 success, but the image was not present on the subsequent attachment list
 * warner tried to upload 900kB-1.1MB .jpg files to wiki:Summit2Day1 .
 Sometimes it failed with a !UnicodeDecodeError, sometimes with an nginx
 413 Request Entity Too Large.

 Somebody needs to study the way that nginx invokes uwsgi with large
 request bodies. If it writes them to a file before handing them to uwsgi
 (seems unlikely), then it's conceivable that a file-permission/ownership
 problem is involved.

 I'm going to assign this one to Zooko, since he configured nginx/uwsgi on
 this box, and thus far is the only one who even begins to understand them.

 For now, I'm manually scp'ing files to tahoe-lafs.org and using 'trac-
 admin' to attach them to tickets.

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Ticket URL: <https://tahoe-lafs.org/trac/tahoe-lafs/ticket/1581>
tahoe-lafs <https://tahoe-lafs.org>
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