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Re: Recommendation for filesystem for USB external drive for backups

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On Mi, 12 aug 20, 20:14:03, rhkramer@gmail.com wrote:
> I'm getting closer to setting up a consistent backup plan, backing up to an 
> external USB drive.  I'm wondering about a reasonable filesystem to use, I 
> think I want to stay in the ext2/3/4 family, and I'm wondering if there is any 
> good reason to use anything beyond ext2?
 
In my opinion using ext2 in 2020 is mostly pointless, beyond the rare 
situation where some software doesn't support ext4 (e.g. some odd/old 
bootloader, other OSs, etc.).

Because it is getting significantly less use support for it is also more 
likely to bit rot.

As far as I know ext3 is mostly ext2 with journalling added.

In comparison ext4 was developed from scratch with journaling and 
support for other newer techniques, like better allocation of space to 
prevent fragmentation and improve performance.

> (Some day I'll try ZFS or BTRFS for my "system" filesystems, but don't see any 
> point (and don't want to learn) either of them at this point -- I don't see 
> much need for a backup filesystem.)

As has been stated already, both btrfs and ZFS have built-in bitrot 
protections that are very useful for backups and archives. To achieve 
the same level of protection on ext4 you need additional tools.

Kind regards,
Andrei
-- 
http://wiki.debian.org/FAQsFromDebianUser

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Recommendation for filesystem for USB external drive for backups rhkramer@gmail.com - 2020-08-13 02:20 +0200
  Re: Recommendation for filesystem for USB external drive for backups Keith Bainbridge <keithrbaugroups@gmail.com> - 2020-08-13 02:40 +0200
  Re: Recommendation for filesystem for USB external drive for backups Ben Caradoc-Davies <ben@transient.nz> - 2020-08-13 03:00 +0200
    Re: Recommendation for filesystem for USB external drive for backups <tomas@tuxteam.de> - 2020-08-13 11:00 +0200
  Re: Recommendation for filesystem for USB external drive for backups Mark Allums <maa@allums.com> - 2020-08-13 03:20 +0200
  Re: Recommendation for filesystem for USB external drive for  backups Charles Curley <charlescurley@charlescurley.com> - 2020-08-13 05:20 +0200
    Re: Recommendation for filesystem for USB external drive for backups <tomas@tuxteam.de> - 2020-08-13 11:00 +0200
  Re: Recommendation for filesystem for USB external drive for backups David Christensen <dpchrist@holgerdanske.com> - 2020-08-13 10:40 +0200
    Re: Recommendation for filesystem for USB external drive for backups Tom Dial <tddial@comcast.net> - 2020-08-13 20:10 +0200
      Re: Recommendation for filesystem for USB external drive for backups rhkramer@gmail.com - 2020-08-13 22:00 +0200
        Re: Recommendation for filesystem for USB external drive for backups David Christensen <dpchrist@holgerdanske.com> - 2020-08-13 22:20 +0200
          Re: Recommendation for filesystem for USB external drive for backups Greg Wooledge <wooledg@eeg.ccf.org> - 2020-08-13 22:40 +0200
            Re: Recommendation for filesystem for USB external drive for backups Dan Ritter <dsr@randomstring.org> - 2020-08-13 23:00 +0200
              Re: Recommendation for filesystem for USB external drive for backups ghe2001 <ghe2001@protonmail.com> - 2020-08-13 23:40 +0200
                Re: Recommendation for filesystem for USB external drive for backups Jonathan Dowland <jon+debian-user@dow.land> - 2020-08-14 11:40 +0200
                Re: Recommendation for filesystem for USB external drive for backups <tomas@tuxteam.de> - 2020-08-14 12:00 +0200
          Re: Recommendation for filesystem for USB external drive for backups rhkramer@gmail.com - 2020-08-14 03:30 +0200
            Re: Recommendation for filesystem for USB external drive for backups David Christensen <dpchrist@holgerdanske.com> - 2020-08-14 07:10 +0200
        Re: Recommendation for filesystem for USB external drive for backups Tom Dial <tddial@comcast.net> - 2020-08-14 04:50 +0200
    Re: Recommendation for filesystem for USB external drive for backups David Christensen <dpchrist@holgerdanske.com> - 2020-08-20 00:10 +0200
      Re: Recommendation for filesystem for USB external drive for backups Ben Caradoc-Davies <ben@transient.nz> - 2020-08-20 01:40 +0200
        Re: Recommendation for filesystem for USB external drive for backups Michael Stone <mstone@debian.org> - 2020-08-20 04:20 +0200
  Re: Recommendation for filesystem for USB external drive for  backups local10 <local10@tutanota.com> - 2020-08-13 21:50 +0200
  Re: Recommendation for filesystem for USB external drive for backups Andrei POPESCU <andreimpopescu@gmail.com> - 2020-08-14 07:30 +0200
    Re: Recommendation for filesystem for USB external drive for backups David Wright <deblis@lionunicorn.co.uk> - 2020-08-14 17:40 +0200
      Re: Recommendation for filesystem for USB external drive for backups Andrei POPESCU <andreimpopescu@gmail.com> - 2020-08-15 13:00 +0200

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