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Groups > linux.debian.user > #240223

write only storage.

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I would like to have some WORM memory for my backups. At the moment
they're copied to an archive machine using a chrooted unprivileged user
and then moved via a cron job so that that user cannot delete them
(other than during a short window).

My though was to use a raspberry-pi4 to provide a USB mass storage
device that is modified to not permit deleting. If the pi4 is not
accessible via the network then other than bugs in the mass storage API
it should be impossible to delete things without physical access to the
pi.

Before I start reinventing the wheel, does anyone know of anything
similar to this already in existence?

Things like chattr don't achieve what I want as root can still override
that. I'm looking for something that requires physical access to delete.

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write only storage. Tim Woodall <debianuser@woodall.me.uk> - 2021-09-21 18:10 +0200
  Re: write only storage. Toni Mas Soler <antomassol@protonmail.com> - 2021-09-21 18:30 +0200
    Re: write only storage. "Andrew M.A. Cater" <amacater@einval.com> - 2021-09-21 19:10 +0200
      Re: write only storage. Tim Woodall <debianuser@woodall.me.uk> - 2021-09-21 19:40 +0200
        Re: write only storage. "Thomas Schmitt" <scdbackup@gmx.net> - 2021-09-21 20:50 +0200
        Re: write only storage. Michael Stone <mstone@debian.org> - 2021-09-21 22:10 +0200
        Re: write only storage. Stefan Monnier <monnier@iro.umontreal.ca> - 2021-10-01 17:10 +0200
      Unclosed DVD-R or BD-R sessions ? was: Re: write only storage. "Thomas Schmitt" <scdbackup@gmx.net> - 2021-09-21 20:50 +0200
    Re: write only storage. Michael Stone <mstone@debian.org> - 2021-09-21 19:10 +0200
  Write *once* storage (was Re: write only storage) Steve McIntyre <steve@einval.com> - 2021-09-21 19:30 +0200
    Re: Write *once* storage (was Re: write only storage) "James H. H. Lampert" <jamesl@touchtonecorp.com> - 2021-09-21 19:40 +0200
    Re: Write *once* storage (was Re: write only storage) Joe Pfeiffer <pfeiffer@cs.nmsu.edu> - 2021-09-22 01:30 +0200
  Re: write only storage. Marco Möller <talby@debianlists.mobilxpress.net> - 2021-09-21 19:30 +0200
    Re: write only storage. Tim Woodall <debianuser@woodall.me.uk> - 2021-09-21 19:50 +0200
    Re: write only storage. Linux-Fan <Ma_Sys.ma@web.de> - 2021-09-21 21:50 +0200
    Re: write only storage. Marco Möller <talby@debianlists.mobilxpress.net> - 2021-09-22 18:20 +0200
  Re: write only storage. David Christensen <dpchrist@holgerdanske.com> - 2021-09-22 06:20 +0200
    Re: write only storage. Tim Woodall <debianuser@woodall.me.uk> - 2021-09-22 10:10 +0200
      Re: write only storage. "Thomas Schmitt" <scdbackup@gmx.net> - 2021-09-22 12:30 +0200
        Re: write only storage. Tim Woodall <debianuser@woodall.me.uk> - 2021-09-22 16:40 +0200
      Re: write only storage. David Christensen <dpchrist@holgerdanske.com> - 2021-09-23 01:00 +0200

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