rsync backup

[Karl F. Larsen]

Chris wrote:
> On Sat, 21 Nov 2009 16:59:57 -0700
> "Karl F. Larsen" <klarsen1 at gmail.com> wrote:
> 
>> don fisher wrote:
>>> Karl F. Larsen wrote:
>>>> don fisher wrote:
>>>>> don fisher wrote:
>>>>>> Karl Larsen wrote:
>>>>>>> 	I have lost the little thing I used to call for a
>>>>>>> backup of my linux. I was using rsync -avg /  exempt/media
>>>>>>> exempt/dev  . .. /media/disk-1, or something like that.
>>>>>>>
>>>>>>> 	I have looked at man rsync which is confusing, and
>>>>>>> tried Google but their info is trivial.
>>>>>>>
>>>>>>> 	Is anyone using something like this?
>>>>>>>
>>>>>>> Karl
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>> I have the following in a a script that backs up the entire disk
>>>>>> to a 500GB usb drive that I mount on /backup.
>>>> 	Hi Don, this is almost exactly what I want to do.
>>>>
>>>>>> sudo nice --adjustment=10 rsync -rlpgouvtS --progress -v
>>>> What does "sudo nice --adjustment=10" do? I have never tried 
>>>> sudo nice, ever.
>>>>
>>>>
>>>>
>>>>>> --delete --modify-window=1200 
>>>> 	What does "--progress -v << --delete --modify-window=1200"
>>>> do?
>>>>
>>>>>> --exclude-from=/home/your_name/rsync-backup_exclude / /backup
>>>>>>
>>>>>> The rsync-backup_exclude fike looks like:
>>>>>> /proc/*
>>>>>> /sys/*
>>>>>> /dev/*
>>>>>> /lost+found/*
>>>>>> /var/log/lastlog
>>>>>> /swapfile
>>>>>> /usr2/*
>>>>>> /usr3/*
>>>>>> /tmp/*
>>>>>> /net/*
>>>>>> /mnt/*
>>>>>> /cdrom/*
>>>>>>
>>>> Why do most entries end with /* but a few just end?
>>>>
>>>>
>>>>>> You probably don't have all of the same mount points that I do,
>>>>>> so edit to taste.
>>>>>>
>>>>>> don
>>>>> Sorry, but /backup is also in the rsync-backup_exclude file.
>>>> 	I was going to say what happened to the possible endless
>>>> loop?
>>>>
>>>>
>>>> 	I will edit to taste and fool around. I did a pretty good 
>>>> backup with rdiff-backup which I think uses rsync, but there 
>>>> where a lot of errors listed.
>>>>
>>>>
>>>> 73 Karl
>>>>
>>>>> don
>>> Karl,
>>>
>>> sudo is required to process the system files. This command
>>> preserves the owner and group, and also the creation and
>>> modification times. Without sudo you can't modify another persons
>>> file stats.
>>>
>>> nice --adjustment=10 is really just nice, since the default level
>>> is 10. It lowers the priority so that if I am trying to do
>>> something else I get a few cycles.
>>>
>>> --progress -v shows the percentage transfer of each file.
>>>
>>> --delete deletes files that don't exist on the source. This command
>>> will update an existing backup only transferring the changes and
>>> removing files that no longer exist.
>>>
>>> --delete --modify-window=1200 sets a window on the time stamp so it
>>> does not try and delete files that are really the same. Not sure
>>> this is still required.
>>>
>>> Most of the -rlpgouvtS switches are explained below. I have this
>>> comment at the top of my script just encase I forget:-)
>>>
>>> # -r recursive - copy directories recursively
>>> # -l copy symlinks as symlinks
>>> # -p preserve permissions
>>> # -t preserve times
>>> # -g preserve group
>>> # -o preserve owner (root only)
>>> # -D preserve device and special files.
>>>
>>> I am a not a good emailer, so if there are omissions please get
>>> back.
>>>
>>> don
>>>
>> 	Well I quit! At least for awhile. I tried rdiff-backup and it 
>> does write the files to my USB hard drive. All rsync help 
>> either does not run, or it runs but does not write a thing on 
>> my USB hard drive.
>>
>> 73 Karl
>>
>>
> 
> Ahh - so are you going to use rdiff-backup? It's pretty simple and
> works for my needs. Figured you might want to have a look at it.
> 

	Well rdiff-backup does write to the backup disk, but I have 
not figured out how to make an incremental backup. Looked at 
man and the web page.

	Rsync is better but getting the proper / : and such is a real 
pain. I expect that is why it is not used much except by 
people working for companies.

	I used the Windows XP backup on my wife's computer and it 
seemed to work very well. Simple. The problem here is the 
computer is 8 years old. So is the hard drive. I expect a near 
term failure...


73 Karl


-- 

	Karl F. Larsen, AKA K5DI
	Linux User
	#450462   http://counter.li.org.
         Key ID = 3951B48D