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sm-discuss - Re: [SM-Discuss] [RFC] Faster checksums with b2sum

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  • From: Eric Sandall <eric AT sandall.us>
  • To: Thomas Orgis <thomas-forum AT orgis.org>, sm-discuss AT lists.ibiblio.org
  • Subject: Re: [SM-Discuss] [RFC] Faster checksums with b2sum
  • Date: Sat, 22 Jul 2017 12:08:16 -0700

On 7/18/17 10:51 PM, Thomas Orgis wrote:
> Am Sat, 15 Jul 2017 15:56:04 -0300
> schrieb Ismael Luceno <ismael.luceno AT gmail.com>:
>> I'm going to implement support for it in sorcery, and I would like
>> to make it the default (depending on either implementation).
> I see a maximum speedup of about 2. This might be interesting for
> various applications, but I do not see much point in using it as
> default for spell sources. The time spent verifying those is not long
> and there's value in agreeing on some standard to possibly compare with
> others.
>
> But sorcery's md5sum logs for cleanse … yeah, replacing that with a
> more secure and about as fast checksum would be nice. Did you have that
> in mind? We also could think about compressing /var/log/sorcery/b2sum,
> then, which would help a bit to avoid storage overhead compared to
> md5sum. Of course, it is mostly the file path that compresses well …
>
> [0] http://git.iodev.co.uk/ismael/smgl/b2sum.git/
>
> How does it compare to the coreutils variant? And … how do you name it
> to be installed alongside the full-featured coreutils build (with
> checking mode)?
>
>
> Alrighty then,
>
> Thomas

I agree on both points. :) Changing default for spells does not sound
like a great idea for the reasons Thomas specified, but changing the
default for Sorcery's checksums to a faster/better method would work.

-sandalle

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