Re: opinions: backups

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On 14 Aug 2022 at 17:08, Bill Cunningham wrote:

Date sent:      	Sun, 14 Aug 2022 17:08:23 -0400
To:             	users@xxxxxxxxxxxxxxxxxxxxxxx
From:           	Bill Cunningham 
<bill.cu1234@xxxxxxxxx>
Subject:        	opinions: backups
Send reply to:  	Community support for Fedora 
users <users@xxxxxxxxxxxxxxxxxxxxxxx>

>      I just thought I would ask for opinions on backups that people use. 
> I have thought about the old fashioned dump/restore; IDK if that would 
> be good for modern use or not. My system isn't really that big. My 
> allotted size is 30 Gig, and it's not full. There's dar and xar and 
> fsarchiver. There's backing up with btrfs too.
> 
>      I am thinking about back ups of the whole system and rpms I have 
> installed. And maybe not backing up logs, old settings like are stored 
> in the root directory of the user(s) and root account.
> 
>      Does anyone use any of these or other backups? I just want to save 
> my rpms and not have to download all from scratch. IDK if dar or dump 
> would backup things like /sys or other system directories. I have 
> created dump backups but not really restored from scratch.
> 

There have been a lot of replies, but I'll add an option 
that probable isn't a full solution. I've been the 
maintainer of G4L project on sourceforge since 2004. I 
build in on my Fedora 35 system at moment for next 
version. Last release version was built on Fedora 34. 

It is a bare metal backup system by default, making disk 
or partition backups that can be restored. Basically a dd 
image compressed using lzop or gzip. Can back to local 
disk or via network (default is ftp using ncftp). Does have 
fsarchiver include, but only tested it once. Had a user 
request adding it, so didn't and did hear it worked will for 
him. But being a bare metal backup, it copies everything. 
Clearing unused sectors before greatly reduces size of 
image. Using lzop is faster than using gzip, and image 
only slightly larger. Do a image every few months, but 
use rsync to copy critical directories between machine for  
things that need more often backups..

Recently migrated 3 machines from regular hard disk to 
ssd disk using clone option. With 1T drives it took 4 to 7 
hours, so speed is dependent on unbuffers speed. Made 
the mistake of hooking an ssd disk via a usb 2 adapter on 
the one that took 7 hours, but notebook only had 1 disk 
bay..

Kernels are built from source kernel.org, and try to 
include most disk and network controller. Boots from CD, 
or from USB, and can be added to a regular grub2 menu 
with 40_custom addition. Has a UEFI boot option, but 
haven't figured how to do a UEFI boot from grub2 setup.

Is text based using dialog screen.

Before retiring used it at college a lot. Could restore 
Windows 10 partition in about 10 minutes. Whole disk 
took about 45 minutes with Windows 10 and Fedora.
Also, used udpcast to image one system in lab to other 19 
machines using the multi-cast in about 45 minutes.

There is also G4U, Clonezilla and other similar programs.


> Bill
> 
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+------------------------------------------------------------+
 Michael D. Setzer II - Computer Science Instructor 
(Retired)     
 mailto:mikes@xxxxxxxx                            
 mailto:msetzerii@xxxxxxxxx
 Guam - Where America's Day Begins                        
 G4L Disk Imaging Project maintainer 
 http://sourceforge.net/projects/g4l/
+------------------------------------------------------------+


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