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Re: write only storage.

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On Tue, Sep 21, 2021 at 12:50:18PM -0400, Michael Stone wrote:
> Well, chattr -i turns that off
> 
> On Tue, Sep 21, 2021 at 04:29:07PM +0000, Toni Mas Soler wrote:
> > I use to backup my iPhone's photo library using a stfp connection (all in the same directory in my PC). Thus, I can chattr +i the only directory needed and nobody can remove.
> > 
> > I cannot understand why chattr does not achieve you.
> > 
> > Toni Mas
> > GPG 3F42A21D84D7E950
> > 
> > Sent with ProtonMail Secure Email.
> > 
> > ‐‐‐‐‐‐‐ Original Message ‐‐‐‐‐‐‐
> > 
> > El dimarts, 21 de setembre 2021 a les 17:53, Tim Woodall <debianuser@woodall.me.uk> va escriure:
> > 
> > > 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.
> 
> 
> 

Write only storage - DVD-R or equivalent Blu-Ray - but make sure to end the 
session. Deletion - feed through a paper shredder.

Or something with a physical write tab that can't be overwritten a la 3.5" 
floppy disk. 

All the very best,

Andy Cater

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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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