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Re: Automatically installing GRUB on multiple drives

From hw <hw@adminart.net>
Newsgroups linux.debian.user
Subject Re: Automatically installing GRUB on multiple drives
Date 2024-01-31 23:30 +0100
Message-ID <I2rfH-6V09-3@gated-at.bofh.it> (permalink)
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On Tue, 2024-01-30 at 21:35 +0100, Nicolas George wrote:
> hw (12024-01-30):
> > Yes, and how much effort and how reliable is doing that?
> 
> Very little effort and probably more reliable than hardware RAID with
> closed-source hardware.

Well, I doubt it.  After all you need to copy a whole partition and
must make sure that it doesn't fail through distribution upgrades and
all kinds of possible changes and even when someone shuts down or
reboots the computer or pulls the plug while the copying is still in
progress.  You also must make sure that the boot manager is installed
on multiple disks.

And when you're going to do it?  When shutting the machine down?
Might not happen and when it does happen, maybe you don't want to wait
on it.

When rebooting it?  Perhaps you don't want to overwrite the copy at
that time, or perhaps it's too late then because there were software
updates before you rebooted and one of the disks failed when
rebooting.

Do you suggest to install backup batteries or capacitors to keep the
machine running until the copying process has completed when the power
goes out?

Or do you want to do it all manually at a time convenient for you?
What if you forgot to do it?


I'm not so silly that you could convince me that you can do it more
reliably than the hardware RAID does it whith a bunch of scripts you
put together yourself, especially not by implying that the hardware
raid which has been tested in many datacenters with who knows how many
hundreds of thousands of machines over many years uses closed source
software which has been maintained and therefore must be unreliable.

The lowest listed MTBF of hardware RAID is over 260000 hours
(i. e. about 30 years) on [1].  Can you show that you can do it more
reliably with your bunch of scripts?


[1]: https://www.intel.com/content/www/us/en/support/articles/000007641/server-products/sasraid.html

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Thread

Automatically installing GRUB on multiple drives Nicolas George <george@nsup.org> - 2024-01-24 11:20 +0100
  Re: Automatically installing GRUB on multiple drives "Thomas Schmitt" <scdbackup@gmx.net> - 2024-01-24 12:50 +0100
    Re: Automatically installing GRUB on multiple drives Nicolas George <george@nsup.org> - 2024-01-24 21:10 +0100
      Re: Automatically installing GRUB on multiple drives "Thomas Schmitt" <scdbackup@gmx.net> - 2024-01-24 22:00 +0100
        Re: Automatically installing GRUB on multiple drives Nicolas George <george@nsup.org> - 2024-01-26 10:30 +0100
          Re: Automatically installing GRUB on multiple drives "Thomas Schmitt" <scdbackup@gmx.net> - 2024-01-26 11:10 +0100
      Re: Automatically installing GRUB on multiple drives Tim Woodall <debianuser@woodall.me.uk> - 2024-01-26 04:40 +0100
        Re: Automatically installing GRUB on multiple drives Nicolas George <george@nsup.org> - 2024-01-26 08:50 +0100
          Re: Automatically installing GRUB on multiple drives Andy Smith <andy@strugglers.net> - 2024-01-26 09:40 +0100
            Re: Automatically installing GRUB on multiple drives Nicolas George <george@nsup.org> - 2024-01-26 10:20 +0100
              Re: Automatically installing GRUB on multiple drives "Thomas Schmitt" <scdbackup@gmx.net> - 2024-01-26 10:50 +0100
              Re: Automatically installing GRUB on multiple drives Andy Smith <andy@strugglers.net> - 2024-01-26 11:00 +0100
              Re: Automatically installing GRUB on multiple drives Tim Woodall <debianuser@woodall.me.uk> - 2024-01-26 14:20 +0100
                Re: Automatically installing GRUB on multiple drives Tim Woodall <debianuser@woodall.me.uk> - 2024-01-26 14:30 +0100
                Re: Automatically installing GRUB on multiple drives gene heskett <gheskett@shentel.net> - 2024-01-26 14:50 +0100
                Re: Automatically installing GRUB on multiple drives Andy Smith <andy@strugglers.net> - 2024-01-26 15:40 +0100
                Re: Automatically installing GRUB on multiple drives Andy Smith <andy@strugglers.net> - 2024-01-26 15:20 +0100
      Re: Automatically installing GRUB on multiple drives hw <hw@adminart.net> - 2024-01-26 17:00 +0100
        Re: Automatically installing GRUB on multiple drives Nicolas George <george@nsup.org> - 2024-01-26 17:00 +0100
          Re: Automatically installing GRUB on multiple drives hw <hw@adminart.net> - 2024-01-28 17:20 +0100
            Re: Automatically installing GRUB on multiple drives Andy Smith <andy@strugglers.net> - 2024-01-28 17:50 +0100
              Re: Automatically installing GRUB on multiple drives hw <hw@adminart.net> - 2024-01-28 21:10 +0100
                Re: Automatically installing GRUB on multiple drives Andy Smith <andy@strugglers.net> - 2024-01-28 23:00 +0100
            Re: Automatically installing GRUB on multiple drives Dan Ritter <dsr@randomstring.org> - 2024-01-28 18:20 +0100
              Re: Automatically installing GRUB on multiple drives Andy Smith <andy@strugglers.net> - 2024-01-28 18:40 +0100
                Re: Automatically installing GRUB on multiple drives hw <hw@adminart.net> - 2024-01-28 21:10 +0100
                Re: Automatically installing GRUB on multiple drives Andy Smith <andy@strugglers.net> - 2024-01-28 23:00 +0100
                Re: Automatically installing GRUB on multiple drives hw <hw@adminart.net> - 2024-01-29 17:30 +0100
                Re: Automatically installing GRUB on multiple drives Andy Smith <andy@strugglers.net> - 2024-01-30 01:00 +0100
                Re: Automatically installing GRUB on multiple drives hw <hw@adminart.net> - 2024-01-30 22:00 +0100
                Re: Automatically installing GRUB on multiple drives Andy Smith <andy@strugglers.net> - 2024-01-31 16:20 +0100
                Re: Automatically installing GRUB on multiple drives hw <hw@adminart.net> - 2024-01-31 23:00 +0100
                Re: Automatically installing GRUB on multiple drives Franco Martelli <martellif67@gmail.com> - 2024-02-02 14:50 +0100
                Re: Automatically installing GRUB on multiple drives hw <hw@adminart.net> - 2024-02-02 20:00 +0100
                Re: Automatically installing GRUB on multiple drives Andy Smith <andy@strugglers.net> - 2024-02-03 19:30 +0100
            Re: Automatically installing GRUB on multiple drives Franco Martelli <martellif67@gmail.com> - 2024-01-29 14:50 +0100
              Re: Automatically installing GRUB on multiple drives hw <hw@adminart.net> - 2024-01-29 18:00 +0100
                Re: Automatically installing GRUB on multiple drives Nicolas George <george@nsup.org> - 2024-01-29 18:10 +0100
                Re: Automatically installing GRUB on multiple drives Nicolas George <george@nsup.org> - 2024-01-30 21:40 +0100
                Re: Automatically installing GRUB on multiple drives hw <hw@adminart.net> - 2024-01-31 23:30 +0100
                Re: Automatically installing GRUB on multiple drives Nicolas George <george@nsup.org> - 2024-01-31 23:30 +0100
                Re: Automatically installing GRUB on multiple drives hw <hw@adminart.net> - 2024-02-02 04:50 +0100
                Re: Automatically installing GRUB on multiple drives hw <hw@adminart.net> - 2024-01-30 21:40 +0100
                Re: Automatically installing GRUB on multiple drives <tomas@tuxteam.de> - 2024-01-29 18:50 +0100
                Re: Automatically installing GRUB on multiple drives hw <hw@adminart.net> - 2024-01-30 21:50 +0100
                Re: Automatically installing GRUB on multiple drives <tomas@tuxteam.de> - 2024-01-31 06:40 +0100
                Re: Automatically installing GRUB on multiple drives hw <hw@adminart.net> - 2024-01-31 23:50 +0100
                Re: Automatically installing GRUB on multiple drives Max Nikulin <manikulin@gmail.com> - 2024-02-02 03:50 +0100
        Re: Automatically installing GRUB on multiple drives Andy Smith <andy@strugglers.net> - 2024-01-26 17:00 +0100
  Re: Automatically installing GRUB on multiple drives Charles Curley <charlescurley@charlescurley.com> - 2024-01-24 15:30 +0100
    Re: Automatically installing GRUB on multiple drives Nicolas George <george@nsup.org> - 2024-01-24 15:50 +0100
      Re: Automatically installing GRUB on multiple drives Felix Miata <mrmazda@earthlink.net> - 2024-01-24 17:10 +0100
        Re: Automatically installing GRUB on multiple drives Nicolas George <george@nsup.org> - 2024-01-24 21:00 +0100
          Re: Automatically installing GRUB on multiple drives Felix Miata <mrmazda@earthlink.net> - 2024-01-25 00:10 +0100
  Re: Automatically installing GRUB on multiple drives Franco Martelli <martellif67@gmail.com> - 2024-01-24 17:40 +0100
    Re: Automatically installing GRUB on multiple drives Nicolas George <george@nsup.org> - 2024-01-24 21:00 +0100
  Re: Automatically installing GRUB on multiple drives Andy Smith <andy@strugglers.net> - 2024-01-24 21:30 +0100

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