| chat.freenode.net #tryton log beginning Fri Jul 2 00:00:02 CEST 2010 | ||
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| 2010-07-02 07:58 <paepke> cedk, tryton.org down? | ||
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| 2010-07-02 08:20 <cedk> paepke: I check | ||
| 2010-07-02 08:20 <cedk> paepke: host answer to ping but nothing else | ||
| 2010-07-02 08:20 <cedk> paepke: I will reboot it | ||
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| 2010-07-02 08:24 <paepke> cedk, ok. just wanna inform you. anyway: good morning :-) | ||
| 2010-07-02 08:25 <cedk> paepke: back online | ||
| 2010-07-02 08:28 <cedk> something took all the memory and the kernel started to kill random process | ||
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| 2010-07-02 19:46 <paepke> i have a question regarding the ir.attachment. that collision field is for the case that two files have the same md5sum? | ||
| 2010-07-02 19:48 <paepke> thats how i read the code. just wanna be sure | ||
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| 2010-07-02 20:33 <cedk> paepke: yes | ||
| 2010-07-02 20:34 <paepke> cedk, are you satisfied with that functionality? | ||
| 2010-07-02 20:35 <paepke> i'm currently looking into enhancing that module for a customer | ||
| 2010-07-02 20:51 <paepke> cedk, have you already thought about changing the hashing algorithm to sha1? I'd like to allow a single instance storage with that. | ||
| 2010-07-02 20:58 <paepke> cedk, i wanna ask if you would accept such a patch | ||
| 2010-07-02 21:07 <cedk> paepke: why changing? | ||
| 2010-07-02 21:11 <paepke> cedk, cause sha1 has currently no exploit for generating the same hash. for single instance storage i don't wanna use that collition field. | ||
| 2010-07-02 21:12 <paepke> with md5 its possible to have the same md5 for different files. | ||
| 2010-07-02 21:37 <cedk> paepke: with sha1 also | ||
| 2010-07-02 21:38 <cedk> paepke: and it will be for any hash algorithm | ||
| 2010-07-02 21:38 <paepke> cedk, but its nearly impossible. other projects like mercurial are also relying for file checks | ||
| 2010-07-02 21:39 <paepke> cedk, i agree that its possible with any hashing algorithm. | ||
| 2010-07-02 21:40 <cedk> paepke: I don't see any goals with this change | ||
| 2010-07-02 21:40 <cedk> paepke: the hash is only used to detect same data and then store only one | ||
| 2010-07-02 21:40 <paepke> cedk, with the current collition system we aren't able to implement a single instance storage. | ||
| 2010-07-02 21:41 <cedk> paepke: with any hash, you will still need to collision check | ||
| 2010-07-02 21:41 <paepke> cedk, really? | ||
| 2010-07-02 21:41 <cedk> paepke: except if you accept the risk | ||
| 2010-07-02 21:41 <cedk> paepke: still I don't see any goals | ||
| 2010-07-02 21:42 <paepke> cedk, really stored only once? i assumed it has a -1 on that file name? | ||
| 2010-07-02 21:42 <cedk> paepke: what do you call "single instance storage"? | ||
| 2010-07-02 21:42 <paepke> cedk, to store it only once. thats what you said. but i can't read that in the code. | ||
| 2010-07-02 21:42 <paepke> cedk, maybe i'm to dumb to find the correct snippet | ||
| 2010-07-02 21:43 <cedk> paepke: it is the case | ||
| 2010-07-02 21:44 <cedk> paepke: just try | ||
| 2010-07-02 21:44 <paepke> cedk, i'm doing :-) | ||
| 2010-07-02 21:53 <paepke> cedk, ok. you were again totally right. i misinterpreted how the collision occurs. | ||
| 2010-07-02 21:54 <paepke> i shouldn't doubt the tryton code you guys wrote ;-) | ||
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