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marcan42's profile
Hector Martin
Hector Martin
Hector Martin
@marcan42

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Hector Martin

@marcan42

If it ain't broke, I'll fix it! I'm porting Linux to Apple Silicon Macs at @AsahiLinux. http://patreon.com/marcan  | http://github.com/sponsors/marcan 

Tokyo, Japan
marcan.st
Joined May 2009

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    1. whitequark‏ @whitequark 23 Mar 2018
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      what happens when you assemble a massive drive array and don't touch it for a year? THAT'S RIGHT, A MASSIVE DRIVE FAILUREpic.twitter.com/dB9cGqsUxh

      2 replies 4 retweets 58 likes
      Show this thread
    2. whitequark‏ @whitequark 23 Mar 2018
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      kinda amazed I had the premonition of this and set up the OS on a RAID 1 array distributed over every single drive so at least the system still boots

      1 reply 0 retweets 15 likes
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    3. whitequark‏ @whitequark 23 Mar 2018
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      *stares at drive* the pads on the controller board are... corroded?! WHAT

      1 reply 1 retweet 14 likes
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    4. whitequark‏ @whitequark 23 Mar 2018
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      this just in, hard drives literally rot in hong kong. dont go to hong kong

      6 replies 5 retweets 39 likes
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    5. whitequark‏ @whitequark 23 Mar 2018
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      not just hard drives, i had a RAM stick die too (!). no idea how, maybe the mold that grows on my walls and is fucking impossible to kill grew on the PCB, i wouldn't be surprised this is all good and funny but i'm seriously worried for my data now

      7 replies 1 retweet 20 likes
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    6. Hector Martin‏ @marcan42 29 Mar 2018
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      Replying to @whitequark

      The server I originally had at the hackerfarm slowly corroded itself to death. First one of the RAM VDDQ control chips died, killing half the RAM slots. Eventually it refused to power on. The other server there is fine though, I think it depends on the specific model!

      1 reply 0 retweets 1 like
    7. whitequark‏ @whitequark 29 Mar 2018
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      Replying to @marcan42

      how did you narrow it down to a VDDQ control chip?

      1 reply 0 retweets 1 like
      Hector Martin‏ @marcan42 29 Mar 2018
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      Replying to @whitequark

      There are only a few things shared by one RAM bank (and not the other). I guessed it had to be a supply or ref voltage of some sort, so I measured them. It wasn't even the regulator... Just some chip with an unknown function connected to it. *Removing* it fixed the problem.

      1:31 AM - 29 Mar 2018
      • 3 Likes
      • Lars Viklund arturo182 whitequark
      1 reply 0 retweets 3 likes
        1. New conversation
        1. Hector Martin‏ @marcan42 29 Mar 2018
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          Replying to @marcan42 @whitequark

          Hector Martin Retweeted Hector Martin

          Found the tweet; it was vref_dq.https://twitter.com/marcan42/status/776827234371903488?s=19 …

          Hector Martin added,

          Hector Martin @marcan42
          The hackerfarm server was marking half of its RAM as failed. Fixed it by *removing* a chip. Still dunno what it did. pic.twitter.com/M4ykmgM61u
          1 reply 0 retweets 2 likes
        2. whitequark‏ @whitequark 29 Mar 2018
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          Replying to @marcan42

          damn that's a lot of RAM. and a lot of fans. but I guess I'm new to server hw

          0 replies 0 retweets 1 like
          3. End of conversation

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