#ceph IRC Log

Index

IRC Log for 2011-07-11

Timestamps are in GMT/BST.

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[19:02] <yehudasa> stingray: car parking?
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[19:36] <bchrisman> sagewk: we're out for all-hand mtg this week...
[19:37] <sagewk> bchrisman: whole week?
[19:40] <bchrisman> heh.. yeah???
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[20:18] <gregaf> Tv: hmm, are you sure autotest includes xfstests? I don't see it in their git repo or your tarball
[20:18] <gregaf> though I might be missing something
[20:18] <Tv> gregaf: hold on
[20:18] <Tv> now why do i remember that :(
[20:19] <Tv> gregaf: sorry if i misled you, can't find it either
[20:19] <Tv> i think that was just on the (infinite) todo list
[20:23] <gregaf> no worries
[20:24] * sjust (~sjust@ip-64-111-111-107.dreamhost.com) has joined #ceph
[20:58] <cmccabe> so
[20:58] <cmccabe> I'm starting to think that httplib is the one doing MIME-encoding on our utf8-dirty metadata
[20:58] <cmccabe> so I really only have two choices for testing what actually happens when you try to store non-utf8 data in s3
[20:59] <cmccabe> use some kind of C program, or monkeypatch httplib
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[21:19] <Tv> cmccabe: can you pass it str instead of unicode?
[21:19] * bchrisman (~Adium@c-98-207-207-62.hsd1.ca.comcast.net) Quit (Quit: Leaving.)
[21:19] <Tv> also, there's http://code.google.com/p/httplib2/
[21:20] <cmccabe> I don't see why string vs. unicode string would matter
[21:20] <cmccabe> if it's being "helpful" in one case it probably wants to be helpful in the other
[21:20] <cmccabe> I guess I could try it
[21:21] <Tv> worst case, you talk to a straight up TCP socket
[21:21] <cmccabe> the /usr/bin/s3 command seems to have some way of specifying x-amz-meta headers, so maybe that will work
[21:21] <cmccabe> but I can't even find out who made /usr/bin/s3 or what version of it I have
[21:21] <cmccabe> apparently implementing --version or printing an author name was not important enough to do
[21:21] <cmccabe> and searching for "s3" doesn't get me any hits
[21:21] <cmccabe> for the program
[21:22] <Tv> no calling of /usr/bin/s3 in s3-tests nosetests please
[21:23] <cmccabe> anyway, test_object_set_get_non_utf8_metadata passes a regular string, no u in front
[21:23] <cmccabe> talking to a raw tcp socket is not possible since I would need to re-implement aws authentication
[21:24] <cmccabe> remember it's not HTTPS based
[21:24] <Tv> https is unrelated
[21:24] <Tv> i think you can ask boto to sign things for you, at least with some hackery
[21:25] <Tv> yeah just pass in a http_request it seems
[21:26] <cmccabe> the point is, I can't use http_request because the mangling is happening there
[21:26] <yehudasa> cmccabe: just take a tcpdump of both cases
[21:26] <yehudasa> cmccabe: s3 is from libs3
[21:26] <cmccabe> yehudsasa: yeah, that's a pretty good idea
[21:30] <Tv> is this about test_object_set_get_non_utf8_metadata and friends?
[21:30] <Tv> i'm not sure anymore
[21:30] <Tv> if it is, your httplib theory needs to explain why it behaves differently against aws
[21:32] <cmccabe> tcpdump will answer this
[21:37] <cmccabe> I'm having a lot of trouble interpreting this dump
[21:38] <cmccabe> I thought ss3.amazonaws.com didn't use ssl, but I think this is
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[21:39] <Tv> cmccabe: it can do both
[21:39] <Tv> it's up to the client to decide
[21:39] <Tv> is_secure=False is your friend
[21:40] <cmccabe> tv: yeah
[21:44] <cmccabe> ok, that is a lot more readable
[21:44] <cmccabe> I guess obviously wireshark can't read SSL; that's kind of the point
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[21:45] <cmccabe> anyway, it looks like it is being sent over the wire not mime encoded.
[21:45] <cmccabe> so amazon's docs are wrong again, and rgw needs to do that encoding to be compatible
[21:47] <Tv> cmccabe: where are aws docs wrong?
[21:47] <cmccabe> tv: "If some metadata contains unprintable characters, it is not returned. Instead, the "x-amz-missing-meta" header is returned with a value of the number of the unprintable metadata entries. Each name, value pair must conform to US-ASCII when using REST and UTF-8 when using SOAP or browser-based uploads via POST."
[21:48] <Tv> oh where's that?
[21:48] <cmccabe> tv: s3 developer's guide
[21:48] <cmccabe> tv: in reality, you never get x-amz-missing-meta no matter what garbage you send
[21:48] <cmccabe> tv: and sending non-utf8 is cheerfully handled by mime-encoding on the server-side
[21:48] <Tv> yeah i didn't see that in the api reference
[21:48] <Tv> though api ref fails to mention the quoting
[21:48] <cmccabe> search the pdf
[21:49] <cmccabe> the 2006 one which is still the latest they've released
[21:51] <Tv> oh heh, the authentication specifies it's a hmac of utf-8 encoded data ;)
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[21:52] <cmccabe> tv: yeah, they more or less try to mandate utf-8 everywhere, which makes sense
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[21:52] <Tv> it would, if they enforced it ;)
[21:52] <cmccabe> tv: yeah, I don't understand why they don't just reject invalid utf-8 metadata
[21:53] <cmccabe> tv: they're java programmers, enforcing invariants ought to be second nature to them
[21:53] <cmccabe> tv: probably the docs are just out of date or something
[21:54] <Tv> "it started working, we're done"
[21:54] <cmccabe> stones, glass hosues
[21:54] <cmccabe> houses
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[21:55] <cmccabe> anyway, brb, lunch
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