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04:23:12  <madthanu>there's this buggy application, and a leveldb database directory seems suspicious
04:23:31  <madthanu>there is a log file, and there are a lot of sst files with numbers greater than the log file in the directory
04:23:34  <madthanu>is that usual?
04:23:59  <madthanu>help would be really appreciated ....
04:28:43  <rescrv>madthanu: you're looking at issue 2770, and the latest posted DB is not corrupted in the same way as the others
04:28:52  <rescrv>in fact, every single key reads just fine from it
04:29:12  <rescrv>the reason you see the SST files with numbers greater than the log file is because of compactions that start after that log file is created
04:29:23  <madthanu>rescrv: oh cool
04:29:36  <madthanu>rescrv: yup, looking at 2770
04:30:02  <madthanu>rescrv: probably not the best place to discuss, but did you report the munmap() bug to the apple guys?
04:30:30  <rescrv>Given the nature of the crash, the fact that the DB is not corrupted, and that OMG5 was OK, I suspect it's a bug introduced between OMG5 and OMG6
04:30:54  <rescrv>madthanu: Two of my friends who retweeted the announcement work for Apple. It's likely been forwarded internally.
04:31:29  <madthanu>actually, makes sense that it's introduced in OMG6 ... and cool about Apple
04:32:51  <rescrv>I don't wonder if some of the problems are people running ASICs on their machines cause power dips that lead to bitflips
04:33:53  <madthanu>but you have experienced similar problems with other software that uses LevelDB as well, right?
04:34:05  <madthanu>It's only the bitcoin folks who use ASICs ...
04:34:20  <rescrv>the problems I experienced are explained by the bug/patch that I've already submitted
04:34:27  <madthanu>oh ... got it
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04:35:13  <madthanu>plus maybe toffoo's RAM is corrupt or something ... we'd never know
04:35:34  <madthanu>it's only toffoo testing it, I guess
04:35:49  <rescrv>yeah. I suspect that it's OMG6 if OMG5 worked OK.
04:35:52  <rescrv>they'll sort it out
04:36:01  <madthanu>haha
04:36:09  <madthanu>yes
04:36:13  <madthanu>and congrats on the bounty :)
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04:36:38  <rescrv>I wrote a tool to verify the integrity of LevelDB in every way I can imagine, and it worked just fine with that DB.
04:36:42  <rescrv>thanks.
04:37:27  <rescrv>IIRC, you're doing FS research, correct?
04:37:41  <madthanu>I am, yes
04:39:26  <rescrv>are you focusing mainly on bugs and such, or do you have another angle?
04:39:42  <rescrv>It sounded like you may be doing academic research and were looking to further investigate this bug.
04:39:42  <madthanu>I'm taking this conversation to pm
04:39:48  <rescrv>sure thing
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05:18:16  <levelbot>[npm] [email protected] <http://npm.im/leveldown>: A Node.js LevelDB binding, primary backend for LevelUP (@rvagg)
05:18:48  <rvagg>^^^ contains rescrv's osx corruption bug patch against leveldb
05:35:36  <jcrugzz>awesome
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06:21:46  <hij1nx>\o\|o|/o/
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17:34:09  <levelbot>[npm] [email protected] <http://npm.im/level-path>: sensible key / range generator for levelup (@stagas)
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20:13:40  <levelbot>[npm] [email protected] <http://npm.im/level-path>: sensible key / range generator for levelup (@stagas)
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20:41:21  <kenansulayman>stagas beware that \xFF might screw with possible sublevel uses
20:47:04  <stagas>kenansulayman: it's unlikely
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21:34:10  <levelbot>[npm] [email protected] <http://npm.im/sublevel>: sublevels for levelup without the complexity (@stagas)
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22:31:10  <levelbot>[npm] [email protected] <http://npm.im/uberlev>: commandline and REPL access for uberlevel (@kenansulayman)
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22:33:15  <levelbot>[npm] [email protected] <http://npm.im/uberlev>: commandline and REPL access for uberlevel (@kenansulayman)
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23:19:18  <ELLIOTTCABLE>hij1nx: o7
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