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Re: Adding a hardware swap partition

From bp@www.zefox.net
Newsgroups comp.sys.raspberry-pi
Subject Re: Adding a hardware swap partition
Date 2026-03-19 14:49 +0000
Organization A noiseless patient Spider
Message-ID <10ph2e9$plm0$1@dont-email.me> (permalink)
References (4 earlier) <slrn10re7ma.3r3.zsd@x360.localdomain> <10p7d94$1giuh$1@dont-email.me> <slrn10rji08.p41.zsd@x360.localdomain> <10pfjuo$bhl2$1@dont-email.me> <wwv7br8kxpt.fsf@LkoBDZeT.terraraq.uk>

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Richard Kettlewell <invalid@invalid.invalid> wrote:
> bp@www.zefox.net writes:
>> If I was going to set up swap it seemed prudent to make it as fast
>> as I reasonably could. I didn't (and so far still don't) have a clear
>> idea how much difference a swap file versus a swap partition makes.
> 
> The only way to be find out is to measure it under a representative
> workload, but the likely outcome is that the difference will be
> negligible or undetectable.
> 
>> Since /sbin isn't a freestanding directory, this seems impossible
>> without booting from a separate root device, likely a microSD. I
>> didn't see this hurdle coming, at all. It isn't a fatal blunder, but
>> it's a blunder.
> 
> You seem to have a misapprehension about /sbin. It’s not some kind of
> “stuff you need to boot” directory. It’s for utilities used for system
> administration and other root-only commands.
>
 
But those utilities are needed during the partition resize, creastion,
copying and mounting processes if I want to "clean out" the duplicated
/usr files.  

> The way to make a separate-/usr system bootable is to ensure that the
> initramfs mounts /usr, as already discussed. You don’t need a separate
> device for that.
>
This touches on something I wasnt aware of. I don't see an initramfs
manpage. There apropos references to it, but nothing explaining
its purpose. What's it for? 

Thanks for writing!

bob prohaska

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Thread

Adding a hardware swap partition bp@www.zefox.net - 2026-03-11 16:20 +0000
  Re: Adding a hardware swap partition The Natural Philosopher <tnp@invalid.invalid> - 2026-03-11 16:43 +0000
  Re: Adding a hardware swap partition Lawrence D’Oliveiro <ldo@nz.invalid> - 2026-03-11 21:39 +0000
    Re: Adding a hardware swap partition bp@www.zefox.net - 2026-03-12 15:37 +0000
      Re: Adding a hardware swap partition Lawrence D’Oliveiro <ldo@nz.invalid> - 2026-03-12 20:59 +0000
        Re: Adding a hardware swap partition bp@www.zefox.net - 2026-03-13 01:26 +0000
          Re: Adding a hardware swap partition The Natural Philosopher <tnp@invalid.invalid> - 2026-03-13 11:15 +0000
            Re: Adding a hardware swap partition Theo <theom+news@chiark.greenend.org.uk> - 2026-03-13 14:16 +0000
              Re: Adding a hardware swap partition The Natural Philosopher <tnp@invalid.invalid> - 2026-03-13 16:01 +0000
                Re: Adding a hardware swap partition Theo <theom+news@chiark.greenend.org.uk> - 2026-03-13 18:28 +0000
                Re: Adding a hardware swap partition The Natural Philosopher <tnp@invalid.invalid> - 2026-03-13 21:50 +0000
              Re: Adding a hardware swap partition druck <news@druck.org.uk> - 2026-03-13 21:26 +0000
          Re: Adding a hardware swap partition Kees Nuyt <kees@nospam.demon.invalid> - 2026-03-13 22:25 +0100
  Re: Adding a hardware swap partition Jim Jackson <jj@franjam.org.uk> - 2026-03-12 09:13 +0000
    Re: Adding a hardware swap partition Jim Jackson <jj@franjam.org.uk> - 2026-03-12 09:31 +0000
  Re: Adding a hardware swap partition Jim Jackson <jj@franjam.org.uk> - 2026-03-12 10:07 +0000
  Re: Adding a hardware swap partition Jim Diamond <zsd@jdvb.ca> - 2026-03-13 14:40 -0300
    Re: Adding a hardware swap partition druck <news@druck.org.uk> - 2026-03-15 13:25 +0000
      Re: Adding a hardware swap partition The Natural Philosopher <tnp@invalid.invalid> - 2026-03-15 14:02 +0000
        Re: Adding a hardware swap partition Josef Möllers <josef@invalid.invalid> - 2026-03-15 17:02 +0100
        Re: Adding a hardware swap partition Jim Diamond <zsd@jdvb.ca> - 2026-03-15 18:04 -0300
          Re: Adding a hardware swap partition Lawrence D’Oliveiro <ldo@nz.invalid> - 2026-03-15 21:31 +0000
            Re: Adding a hardware swap partition Theo <theom+news@chiark.greenend.org.uk> - 2026-03-16 16:01 +0000
              Re: Adding a hardware swap partition Lawrence D’Oliveiro <ldo@nz.invalid> - 2026-03-16 22:53 +0000
          Re: Adding a hardware swap partition bp@www.zefox.net - 2026-03-15 22:53 +0000
            Re: Adding a hardware swap partition Lawrence D’Oliveiro <ldo@nz.invalid> - 2026-03-16 01:41 +0000
            Re: Adding a hardware swap partition Richard Kettlewell <invalid@invalid.invalid> - 2026-03-16 09:54 +0000
              Re: Adding a hardware swap partition Richard Harnden <richard.nospam@gmail.invalid> - 2026-03-16 11:49 +0000
                Re: Adding a hardware swap partition Richard Kettlewell <invalid@invalid.invalid> - 2026-03-16 12:18 +0000
            Re: Adding a hardware swap partition Jim Diamond <zsd@jdvb.ca> - 2026-03-17 18:30 -0300
              Re: Adding a hardware swap partition bp@www.zefox.net - 2026-03-19 01:36 +0000
                Re: Adding a hardware swap partition Richard Kettlewell <invalid@invalid.invalid> - 2026-03-19 08:52 +0000
                Re: Adding a hardware swap partition bp@www.zefox.net - 2026-03-19 14:49 +0000
                Re: Adding a hardware swap partition The Natural Philosopher <tnp@invalid.invalid> - 2026-03-19 19:23 +0000
                Re: Adding a hardware swap partition Richard Kettlewell <invalid@invalid.invalid> - 2026-03-19 22:01 +0000
                Re: Adding a hardware swap partition Richard Kettlewell <invalid@invalid.invalid> - 2026-03-19 22:00 +0000
                Re: Adding a hardware swap partition bp@www.zefox.net - 2026-03-20 03:50 +0000
                Re: Adding a hardware swap partition The Natural Philosopher <tnp@invalid.invalid> - 2026-03-20 07:02 +0000
                Re: Adding a hardware swap partition Lawrence D’Oliveiro <ldo@nz.invalid> - 2026-03-19 22:56 +0000
                Re: Adding a hardware swap partition Anssi Saari <anssi.saari@usenet.mail.kapsi.fi> - 2026-03-25 14:53 +0200
                Re: Adding a hardware swap partition bp@www.zefox.net - 2026-03-25 18:53 +0000
          Re: Adding a hardware swap partition The Natural Philosopher <tnp@invalid.invalid> - 2026-03-16 12:38 +0000

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