Re: [PLUG] Restic backup & TimeShift

["Lee H. Marzke" <lee@marzke.net>]

Thanks JP,

My presentation and the rbackup script are posted here:
http://plone.4aero.com/Members/lmarzke/talks/restic

After looking at Box Backup I see it does many of the same functions as Restic, but 
the implementation is different.   Box requires a central server daemon , while restic
backs up to generic targets such as plain disks, FTP, or S3.  Restic does much of the 
magic with content addressable files ( filenames on target are the contents SHA256 sum ).

Box uses TLS security which requires certificate setup,  while Restic uses a custom AES-256 in CTR mode
and Poly-1305-AES MAC as discussed here:

https://blog.filippo.io/restic-cryptography/

Box backup doesn't seem to implement either local or global du-duplication.  This is tricky,
and Restic explains the chunking algorithm here:
https://restic.net/blog/2015-09-12/restic-foundation1-cdc

But for me, Restic's speed in backing incrementals up over WiFi to S3 was what made the difference
over duplicity.

Lee


----- Original Message -----
> From: "Vossen JP" <jp@jpsdomain.org>
> To: "Philadelphia Linux User's Group Discussion List" <plug@lists.phillylinux.org>
> Sent: Tuesday, July 17, 2018 2:47:23 PM
> Subject: [PLUG] Restic backup & TimeShift

> Thanks to Lee for some great info last night at PLUG West.
> 
> To follow up on some discussion, here are some links about Restic I've
> found helpful:
> * https://github.com/restic/restic  (Go)
> * https://jpmens.net/2017/08/22/my-backup-software-of-choice-restic/
> * https://jpmens.net/2017/09/06/my-restic-backend-of-choice-minio/
> * Restic (repo) wrapper: https://github.com/binarybucks/restic-tools
> *
> https://morimori.tokyo/2017/08/backups-with-restic-a-raspberry-pi-and-a-4tb-hdd/
>	* Lots of great details!
> * minio is an open source object storage server compatible with Amazon
> S3 APIs
>	* https://github.com/minio/minio (Go)
> 
> I use BackupPC as my main backup tool and that has worked very well for
> many years, but that's on-site to disk.  So I also use BoxBackup for
> critical stuff to a server at my Mom's house.  BoxBackup does *exactly*
> the same things as Restic, it's just a bit more complicated to set up
> and use.  Both are in the Debian/whatever repos.
> 
> We didn't get to talk about it, but Linux Mint has released "TimeShift"
> which is basically Mac Time Machine for Linux, implemented using `rsync`
> and hardlinks (like a whole bunch of other similar tools) or BTRFS.  But
> it has a very nice GUI wizard and management tool that makes it
> drop-dead simple.
> 
> I've played with it a little, but I already have enough backup
> strategies.  It also _sounds_ great, but it's not clear to me how you
> recover if something goes bad enough that you can't boot.  I imagine
> there are CLI recovery methods if you can boot to a recovery shell or a
> previous kernel, but I haven't investigated.
> 
> HA, that's interesting.  I just tried to run it on my Mint-17 desktop
> and it told me I don't have enough free space.  I get "Not enough disk
> space (< 534.5 GB)" on my 1TB disk (that's really an mdadm mirror on 2x
> 1TB disks).  Oh well...
> 
> Links:
> * https://www.maketecheasier.com/backup-computer-timeshift-linux-mint/
> *
> http://linuxmint-installation-guide.readthedocs.io/en/latest/timeshift.html
> 
> Later,
> JP
> --  -------------------------------------------------------------------
> JP Vossen, CISSP | http://www.jpsdomain.org/ | http://bashcookbook.com/
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-- 
"Between subtle shading and the absence of light lies the nuance of iqlusion..." - Kryptos 

Lee Marzke, lee@marzke.net http://marzke.net/lee/ 
IT Consultant, VMware, VCenter, SAN storage, infrastructure, SW CM 
+1 800-393-5217 voice/text 
+1 484-348-2230 fax
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