On 02/26/2014 06:05 AM, John R Pierce wrote:
> On 2/25/2014 8:49 PM, Fabrizio Di Carlo wrote:
>> Well... I have 8GBs of RAM... But the point is: how is the best way to do
>> this migration? How backup data?
>>
>
> my favorite way to upgrade a system is to get a new disk drive. pull the
> old one out, install the new one, do a clean install of the new OS on
> the new disk, THEN reconnect the old one as a slave drive, and mount it
> under /mnt or whatever, and copy my data, settings, etc from the old
> system. once done, wipe the old drive and reuse for something else.
>
This line will archive (compress too) your entire OS (important parts)
to tar archive:
tar -cvpzf backup.tar.gz --exclude=/backup.tar.gz --exclude=/proc
--exclude=/lost+found --exclude=/sys --exclude=/mnt --exclude=/media
--exclude=/dev /
If you do not want everything, then add '--exclude=/<folder>" before the
end part "/", but I suggest to at least keep /etc/and /home. Also,
locate your VM's files and move them before tar-ing everything else, to
avoid slowdown with compressing large compressed files.
Watch to have enough space on the directory you are starting the tar
command from.
Also, you can compress to remote system via ssh. Here are examples of
compressing single folder to server via SSH:
tar zcvf - /wwwdata | ssh root@192.168.1.201 "cat > /backup/wwwdata.tar.gz"
or
tar cvzf - /wwwdata | ssh root@192.168.1.201 "dd of=/backup/wwwdata.tar.gz"
--
Ljubomir Ljubojevic
(Love is in the Air)
PL Computers
Serbia, Europe
StarOS, Mikrotik and CentOS/RHEL/Linux consultant
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