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Re: Homebuilt NAS Advice

From Leslie Rhorer <lesrhorer@att.net>
Newsgroups linux.debian.user
Subject Re: Homebuilt NAS Advice
Date 2020-08-05 05:50 +0200
Message-ID <AAiBb-a8-1@gated-at.bofh.it> (permalink)
References (2 earlier) <AzQOB-95-1@gated-at.bofh.it> <AzRUl-LM-3@gated-at.bofh.it> <AA0Eh-62G-9@gated-at.bofh.it> <AA1qG-6zE-21@gated-at.bofh.it> <AA5DY-Cu-5@gated-at.bofh.it>
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On 8/4/2020 8:52 AM, Celejar wrote:
> On Tue, 4 Aug 2020 10:26:32 +0100
> Jonathan Dowland <jon+debian-user@dow.land> wrote:
> 
>> On Tue, Aug 04, 2020 at 01:32:24AM -0700, David Christensen wrote:
>>> jdupes looks interesting, and should work on any file system that
>>> supports hard links.  I expect BorgBackup either calls jdupes or
>>> implements similar functionality:
>>>
>>> https://linuxcommandlibrary.com/man/jdupes.html
>>
>> I'm fairly sure Borg stores files by a hash of their contents and
>> maintains a separate index of names→hashes for each generation.
> 
> Indeed:
> 
> "To actually perform the repository-wide deduplication, a hash of each
> chunk is checked against the chunks cache, which is a hash-table of all
> chunks that already exist."
> 
> https://borgbackup.readthedocs.io/en/stable/internals.html

	I prefer DAR for several reasons.  First of all, as I mentioned before, 
DAR is the only backup solution of which I am aware that can restore not 
only deleted or corrupted files, but which can also restore deletions. 
This means DAR can restore any or all files one chooses in a batch, but 
then if requested can go back and delete files which were deleted at a 
later time but prior to additional DAR backups.

	As a simple example, if one backs up an entire system, deletes several 
files, then does another backup, DAR can restore the system to the exact 
state of the last backup without losing any files in the archive, yet 
not restoring the deleted files.  This eliminates the need to ever 
"refresh" the main backup, keeping every file that was ever on the 
system, yet eliminating the need to delete files from a restore 
performed at a later time.

	DAR is also designed to work with removable media.  In this respect, it 
is similar to the venerable TAR utility, but while TAR is not designed 
to work with random access media, DAR is.  In fact, the name DAR is an 
acronym for Disk ARchive.

	Packages are avail;able for Windows, MacOS, FreeBSD, and nearly all 
Linux distros, including Debian.

http://dar.linux.free.fr/doc/Features.html

http://dar.linux.free.fr/

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Thread

Homebuilt NAS Advice Patrick Bartek <patrick.bartek@gmail.com> - 2020-07-29 22:00 +0200
  Re: Homebuilt NAS Advice Dan Ritter <dsr@randomstring.org> - 2020-07-29 22:20 +0200
    Re: Homebuilt NAS Advice David Christensen <dpchrist@holgerdanske.com> - 2020-07-29 22:30 +0200
      Re: Homebuilt NAS Advice Dan Ritter <dsr@randomstring.org> - 2020-07-29 23:40 +0200
    Re: Homebuilt NAS Advice Patrick Bartek <patrick.bartek@gmail.com> - 2020-07-30 02:50 +0200
      Re: Homebuilt NAS Advice Tom Dial <tddial@comcast.net> - 2020-07-30 22:50 +0200
        Re: Homebuilt NAS Advice Leslie Rhorer <lesrhorer@att.net> - 2020-08-02 01:40 +0200
          Re: Homebuilt NAS Advice David Christensen <dpchrist@holgerdanske.com> - 2020-08-02 03:10 +0200
            Re: Homebuilt NAS Advice Keith Bainbridge <ke1th3216@gmail.com> - 2020-08-02 04:50 +0200
              Re: Homebuilt NAS Advice David Christensen <dpchrist@holgerdanske.com> - 2020-08-02 06:10 +0200
                Re: Homebuilt NAS Advice Leslie Rhorer <lesrhorer@att.net> - 2020-08-02 21:30 +0200
            Re: Homebuilt NAS Advice Leslie Rhorer <lesrhorer@att.net> - 2020-08-02 22:10 +0200
          Re: Homebuilt NAS Advice Stefan Monnier <monnier@iro.umontreal.ca> - 2020-08-03 06:10 +0200
            Re: Homebuilt NAS Advice Jonathan Dowland <jon+debian-user@dow.land> - 2020-08-03 17:30 +0200
              Re: Homebuilt NAS Advice Dan Ritter <dsr@randomstring.org> - 2020-08-03 17:40 +0200
              Re: Homebuilt NAS Advice Stefan Monnier <monnier@iro.umontreal.ca> - 2020-08-03 18:40 +0200
                Re: Homebuilt NAS Advice <tomas@tuxteam.de> - 2020-08-03 19:10 +0200
                Re: Homebuilt NAS Advice Leslie Rhorer <lesrhorer@att.net> - 2020-08-03 22:00 +0200
                Re: Homebuilt NAS Advice <tomas@tuxteam.de> - 2020-08-03 22:20 +0200
                Re: Homebuilt NAS Advice Stefan Monnier <monnier@iro.umontreal.ca> - 2020-08-03 23:50 +0200
                Re: Homebuilt NAS Advice Leslie Rhorer <lesrhorer@att.net> - 2020-08-04 00:50 +0200
            Re: Homebuilt NAS Advice Leslie Rhorer <lesrhorer@att.net> - 2020-08-04 00:40 +0200
    Re: Homebuilt NAS Advice Anssi Saari <as@sci.fi> - 2020-07-30 10:00 +0200
      Re: Homebuilt NAS Advice rhkramer@gmail.com - 2020-07-30 13:20 +0200
  Re: Homebuilt NAS Advice Leslie Rhorer <lesrhorer@att.net> - 2020-07-30 01:50 +0200
    Re: Homebuilt NAS Advice Patrick Bartek <nemommxiv@gmail.com> - 2020-07-30 23:40 +0200
    Re: Homebuilt NAS Advice David Christensen <dpchrist@holgerdanske.com> - 2020-08-08 01:30 +0200
      Re: Homebuilt NAS Advice Leslie Rhorer <lesrhorer@att.net> - 2020-08-08 03:30 +0200
        Re: Homebuilt NAS Advice David Christensen <dpchrist@holgerdanske.com> - 2020-08-09 14:40 +0200
  Re: Homebuilt NAS Advice Peter Ehlert <peter@sdi-baja.com> - 2020-07-30 19:00 +0200
    Re: Homebuilt NAS Advice Charles Curley <charlescurley@charlescurley.com> - 2020-07-30 21:50 +0200
      Re: Homebuilt NAS Advice Celejar <celejar@gmail.com> - 2020-07-31 13:10 +0200
    Re: Homebuilt NAS Advice Patrick Bartek <nemommxiv@gmail.com> - 2020-07-30 23:30 +0200
      Re: Homebuilt NAS Advice Leslie Rhorer <lesrhorer@att.net> - 2020-08-02 01:50 +0200
        Re: Homebuilt NAS Advice Patrick Bartek <nemommxiv@gmail.com> - 2020-08-02 17:50 +0200
  Re: Homebuilt NAS Advice Jonathan Dowland <jon+debian-user@dow.land> - 2020-08-03 17:20 +0200
    Re: Homebuilt NAS Advice Leslie Rhorer <lesrhorer@att.net> - 2020-08-04 00:10 +0200
      Re: Homebuilt NAS Advice deloptes <deloptes@gmail.com> - 2020-08-04 01:20 +0200
        Re: Homebuilt NAS Advice David Christensen <dpchrist@holgerdanske.com> - 2020-08-04 10:40 +0200
          Re: Homebuilt NAS Advice Jonathan Dowland <jon+debian-user@dow.land> - 2020-08-04 11:30 +0200
            Re: Homebuilt NAS Advice Celejar <celejar@gmail.com> - 2020-08-04 16:00 +0200
              Re: Homebuilt NAS Advice Stefan Monnier <monnier@iro.umontreal.ca> - 2020-08-04 16:30 +0200
              Re: Homebuilt NAS Advice Leslie Rhorer <lesrhorer@att.net> - 2020-08-05 05:50 +0200
                Re: Homebuilt NAS Advice Stefan Monnier <monnier@iro.umontreal.ca> - 2020-08-05 16:20 +0200
                Re: Homebuilt NAS Advice Jonathan Dowland <jon+debian-user@dow.land> - 2020-08-05 17:00 +0200
                Re: Homebuilt NAS Advice Stefan Monnier <monnier@iro.umontreal.ca> - 2020-08-05 17:40 +0200
                Re: Homebuilt NAS Advice Leslie Rhorer <lesrhorer@att.net> - 2020-08-06 12:10 +0200
                Re: Homebuilt NAS Advice Celejar <celejar@gmail.com> - 2020-08-06 16:10 +0200
                Re: Homebuilt NAS Advice Leslie Rhorer <lesrhorer@att.net> - 2020-08-06 17:10 +0200
                Re: Homebuilt NAS Advice Celejar <celejar@gmail.com> - 2020-08-06 18:10 +0200
                Re: Homebuilt NAS Advice Jonathan Dowland <jon+debian-user@dow.land> - 2020-08-07 18:30 +0200
                Re: Homebuilt NAS Advice Celejar <celejar@gmail.com> - 2020-08-07 19:40 +0200
                Re: Homebuilt NAS Advice rhkramer@gmail.com - 2020-08-08 00:10 +0200
                Re: Homebuilt NAS Advice Celejar <celejar@gmail.com> - 2020-08-09 04:30 +0200
                Re: Homebuilt NAS Advice Jonathan Dowland <jon+debian-user@dow.land> - 2020-08-09 11:10 +0200
                Re: Homebuilt NAS Advice Stefan Monnier <monnier@iro.umontreal.ca> - 2020-08-09 17:00 +0200
                Re: Homebuilt NAS Advice Celejar <celejar@gmail.com> - 2020-08-09 18:30 +0200
                Re: Homebuilt NAS Advice Stefan Monnier <monnier@iro.umontreal.ca> - 2020-08-09 19:20 +0200
                Re: Homebuilt NAS Advice rhkramer@gmail.com - 2020-08-09 23:50 +0200
                Re: Homebuilt NAS Advice Celejar <celejar@gmail.com> - 2020-08-10 00:00 +0200
                Re: Homebuilt NAS Advice Stefan Monnier <monnier@iro.umontreal.ca> - 2020-08-10 00:30 +0200
                Re: Homebuilt NAS Advice David Christensen <dpchrist@holgerdanske.com> - 2020-08-10 00:50 +0200
                Re: Homebuilt NAS Advice rhkramer@gmail.com - 2020-08-10 00:30 +0200
                Re: Homebuilt NAS Advice David Christensen <dpchrist@holgerdanske.com> - 2020-08-10 00:30 +0200
                Re: Homebuilt NAS Advice Celejar <celejar@gmail.com> - 2020-08-09 18:40 +0200
                Re: Homebuilt NAS Advice David Christensen <dpchrist@holgerdanske.com> - 2020-08-09 23:00 +0200
                Re: Homebuilt NAS Advice deloptes <deloptes@gmail.com> - 2020-08-06 18:20 +0200
                Re: Homebuilt NAS Advice Leslie Rhorer <lesrhorer@att.net> - 2020-08-07 05:30 +0200
                Re: Homebuilt NAS Advice Jonathan Dowland <jon+debian-user@dow.land> - 2020-08-07 18:30 +0200
                Re: Homebuilt NAS Advice rhkramer@gmail.com - 2020-08-06 17:20 +0200
                Re: Homebuilt NAS Advice Celejar <celejar@gmail.com> - 2020-08-06 18:20 +0200
                Re: Homebuilt NAS Advice Stefan Monnier <monnier@iro.umontreal.ca> - 2020-08-06 18:20 +0200
        Re: Homebuilt NAS Advice Andrei POPESCU <andreimpopescu@gmail.com> - 2020-08-04 17:20 +0200
          Re: Homebuilt NAS Advice Leslie Rhorer <lesrhorer@att.net> - 2020-08-05 06:20 +0200
        Re: Homebuilt NAS Advice Leslie Rhorer <lesrhorer@att.net> - 2020-08-05 04:30 +0200
          Re: Homebuilt NAS Advice deloptes <deloptes@gmail.com> - 2020-08-05 09:20 +0200
            Re: Homebuilt NAS Advice Leslie Rhorer <lesrhorer@att.net> - 2020-08-05 11:00 +0200
              Re: Homebuilt NAS Advice deloptes <deloptes@gmail.com> - 2020-08-05 21:00 +0200
                Re: Homebuilt NAS Advice Leslie Rhorer <lesrhorer@att.net> - 2020-08-06 03:50 +0200
                Re: Homebuilt NAS Advice Kushal Kumaran <kushal@locationd.net> - 2020-08-06 06:20 +0200
                Re: Homebuilt NAS Advice deloptes <deloptes@gmail.com> - 2020-08-06 18:20 +0200
                Re: Homebuilt NAS Advice Leslie Rhorer <lesrhorer@att.net> - 2020-08-07 04:10 +0200
                Re: Homebuilt NAS Advice Stefan Monnier <monnier@iro.umontreal.ca> - 2020-08-07 05:50 +0200
            Re: Homebuilt NAS Advice Jonathan Dowland <jon+debian-user@dow.land> - 2020-08-05 12:30 +0200
      Re: Homebuilt NAS Advice Jonathan Dowland <jon+debian-user@dow.land> - 2020-08-05 12:30 +0200
        Re: Homebuilt NAS Advice deloptes <deloptes@gmail.com> - 2020-08-05 21:10 +0200
          Re: Homebuilt NAS Advice Jonathan Dowland <jon+debian-user@dow.land> - 2020-08-05 23:30 +0200
            Re: Homebuilt NAS Advice deloptes <deloptes@gmail.com> - 2020-08-06 00:30 +0200
              Re: Homebuilt NAS Advice Leslie Rhorer <lesrhorer@att.net> - 2020-08-06 01:20 +0200
                Re: Homebuilt NAS Advice Jonathan Dowland <jon+debian-user@dow.land> - 2020-08-08 09:10 +0200
              Re: Homebuilt NAS Advice Stefan Monnier <monnier@iro.umontreal.ca> - 2020-08-06 04:30 +0200
                Re: Homebuilt NAS Advice Leslie Rhorer <lesrhorer@att.net> - 2020-08-06 04:50 +0200
                Re: Homebuilt NAS Advice Stefan Monnier <monnier@iro.umontreal.ca> - 2020-08-06 06:20 +0200
                Re: Homebuilt NAS Advice Leslie Rhorer <lesrhorer@att.net> - 2020-08-06 07:10 +0200
                Re: Homebuilt NAS Advice Leslie Rhorer <lesrhorer@att.net> - 2020-08-06 07:30 +0200
                Re: Homebuilt NAS Advice Stefan Monnier <monnier@iro.umontreal.ca> - 2020-08-06 18:10 +0200
                Re: Homebuilt NAS Advice deloptes <deloptes@gmail.com> - 2020-08-06 18:30 +0200
                Re: Homebuilt NAS Advice Leslie Rhorer <lesrhorer@att.net> - 2020-08-07 03:00 +0200
                Re: Homebuilt NAS Advice deloptes <deloptes@gmail.com> - 2020-08-07 03:20 +0200
                Re: Homebuilt NAS Advice Leslie Rhorer <lesrhorer@att.net> - 2020-08-07 05:00 +0200
                Re: Homebuilt NAS Advice Stefan Monnier <monnier@iro.umontreal.ca> - 2020-08-07 05:40 +0200
                Re: Homebuilt NAS Advice Leslie Rhorer <lesrhorer@att.net> - 2020-08-07 08:00 +0200
                Re: Homebuilt NAS Advice deloptes <deloptes@gmail.com> - 2020-08-07 08:50 +0200
                Re: Homebuilt NAS Advice Leslie Rhorer <lesrhorer@att.net> - 2020-08-07 09:10 +0200
                Re: Homebuilt NAS Advice Stefan Monnier <monnier@iro.umontreal.ca> - 2020-08-07 17:50 +0200
                Re: Homebuilt NAS Advice Leslie Rhorer <lesrhorer@att.net> - 2020-08-08 01:40 +0200
                Re: Homebuilt NAS Advice Stefan Monnier <monnier@iro.umontreal.ca> - 2020-08-08 04:50 +0200
                Re: Homebuilt NAS Advice Leslie Rhorer <lesrhorer@att.net> - 2020-08-08 22:30 +0200
                Re: Homebuilt NAS Advice Stefan Monnier <monnier@iro.umontreal.ca> - 2020-08-09 00:20 +0200
                Re: Homebuilt NAS Advice deloptes <deloptes@gmail.com> - 2020-08-09 01:30 +0200
                Re: Homebuilt NAS Advice David Christensen <dpchrist@holgerdanske.com> - 2020-08-09 22:40 +0200
                Re: Homebuilt NAS Advice David Christensen <dpchrist@holgerdanske.com> - 2020-08-10 00:30 +0200
                Re: Homebuilt NAS Advice Leslie Rhorer <lesrhorer@att.net> - 2020-08-10 01:30 +0200
    Re: Homebuilt NAS Advice Patrick Bartek <nemommxiv@gmail.com> - 2020-08-04 06:30 +0200

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