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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. hedge.txt | Mostly Inactive, except when not‏ @hedgeberg 4 Aug 2018
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      Important question: luks on lvm? Or lvm on luks? Leaning towards lvm on luks but I'm here for opinions.

      4 replies 0 retweets 3 likes
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    3. hedge.txt | Mostly Inactive, except when not‏ @hedgeberg 4 Aug 2018
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      Replying to @AbeSnowman

      Issue is this is a windows/linux dual boot device meaning I can't encrypt the whole thing, but I also want encrypted swap. Hrrrm.

      1 reply 0 retweets 0 likes
    4. hedge.txt | Mostly Inactive, except when not‏ @hedgeberg 4 Aug 2018
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      Replying to @hedgeberg @AbeSnowman

      Don't want to have to decrypt swap every boot, would be nice if that was automatic, but at the same time I'm not 100% sure doing lvm inside luks and then putting both swap and os inside lvm is a good idea. Idk.

      1 reply 0 retweets 0 likes
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    6. hedge.txt | Mostly Inactive, except when not‏ @hedgeberg 4 Aug 2018
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      Replying to @AbeSnowman

      Oh? How exactly does that work? Decrypt one and it does the rest for you?

      0 replies 0 retweets 0 likes
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    8. hedge.txt | Mostly Inactive, except when not‏ @hedgeberg 4 Aug 2018
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      Replying to @AbeSnowman

      I mean, it's encrypted as a single continuous chunk, so there's not really a benefit to 3 keys for 3 partitions instead of one, no? Idk, this is why I ask, my threat models may be totally bogus.

      0 replies 0 retweets 0 likes
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    10. hedge.txt | Mostly Inactive, except when not‏ @hedgeberg 4 Aug 2018
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      Replying to @AbeSnowman

      Yeah I think I'm going to do this. Encrypt the main block, and then lvm after encryption.

      1 reply 0 retweets 2 likes
      Hector Martin‏ @marcan42 4 Aug 2018
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      Replying to @hedgeberg @AbeSnowman

      If all the volumes are on the same platter then CPU usage won't go up. You're I/O limted anyway. You can always encrypt multiple volumes then store the volume keys in the root filesystem and have them automatically decrypt on boot. In the end it depends on what exactly you want.

      11:28 PM - 4 Aug 2018
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      • sww1235 Florian Neumann meowy catgirl ☃️
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        1. Hector Martin‏ @marcan42 4 Aug 2018
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          Replying to @marcan42 @hedgeberg @AbeSnowman

          At one point I had a laptop with a... rather complex RAID/crypto/LVM setup. Still only typed one passphrase on boot (for a LUKS loopfile!). There were good reasons for this mess back then, but now I just have an LVM on LUKS SSD and an LVM on raw dm-crypt HDD w/keyfile on SSD.pic.twitter.com/3oa11BqO8B

          3 replies 6 retweets 34 likes
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