Bug 1460351 - oz fails direct boot because requests library automatically decodes gzip content
oz fails direct boot because requests library automatically decodes gzip content
Product: Fedora
Classification: Fedora
Component: oz (Show other bugs)
Unspecified Unspecified
unspecified Severity unspecified
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Assigned To: Brendan Reilly
Fedora Extras Quality Assurance
Depends On:
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Reported: 2017-06-09 15:41 EDT by Dusty Mabe
Modified: 2017-11-20 21:10 EST (History)
2 users (show)

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Last Closed: 2017-11-20 21:10:53 EST
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Attachments (Terms of Use)
Patch to backport gzip decompression fix (3.15 KB, patch)
2017-06-09 16:46 EDT, Brendan Reilly
no flags Details | Diff

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Description Dusty Mabe 2017-06-09 15:41:34 EDT

We [recently](https://github.com/clalancette/oz/pull/231) switched to the requests library in oz. This works fine for the most part but the requests library has an interesting (and mostly useful) [feature](http://docs.python-requests.org/en/master/user/quickstart/#binary-response-content) where `The gzip and deflate transfer-encodings are automatically decoded for you.`

This does not play well with oz when trying to calculate if the file received was the right content length. We [write out the response from the requests library to a file](https://github.com/clalancette/oz/blob/23dafef3fd8e2d0b6426a52fc93f19e437a70c48/oz/ozutil.py#L835-L845) and then we [check](https://github.com/clalancette/oz/blob/23dafef3fd8e2d0b6426a52fc93f19e437a70c48/oz/Guest.py#L972) that the file size matches the content length from the http header. If it doesn't match, we move on to trying to boot from a `boot.iso`, which also [doesn't work](https://github.com/clalancette/oz/issues/236) for aarch64.

We need to get the patch from https://github.com/clalancette/oz/pull/238 into our version of oz.
Comment 1 Brendan Reilly 2017-06-09 16:46 EDT
Created attachment 1286532 [details]
Patch to backport gzip decompression fix

I've created and attached a patch for the oz dist git f25 branch using that upstream PR.
Comment 2 Dusty Mabe 2017-06-12 10:56:23 EDT
patch merged and build from koji:

Comment 3 Fedora End Of Life 2017-11-16 13:49:32 EST
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Comment 4 Chris Lalancette 2017-11-20 21:10:53 EST
Closing this out, since we got this in.

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