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Hi |
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|
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Am 16.08.2010 01:11, schrieb Nganon: |
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> Hello all, |
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> |
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> My first post on the list. I thought I would start with something that I |
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> started |
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> to think of as 'essential' after losing 90GB of data. Now I have two main |
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> questions in mind: what to and how to back up on gentoo most efficiently. |
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> |
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> 1. Apart from users' home directories and the followings, what should be |
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> backed |
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> up on a gentoo machine? |
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> /etc/portage/ |
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> /root |
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> /var/lib/portage |
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> ...? |
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|
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You should backup all in / except |
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/tmp/* |
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/sys/* |
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/proc/* |
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/lost+found/* |
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/dev/* |
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|
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I have no solution how to bzip or gzip your backups or how to make a dvd |
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backup, but I use "app-backup/rsnapshot" which uses rsync but implements |
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an intelligent rotating system that is done daily, weekly, monthly, |
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yearly according to your config. Of course you should store the backup |
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on another physical hdd. |
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|
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By the way, since a new hdd of one TB is pretty cheap, think about |
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running your gentoo in a software RAID. Guides: |
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|
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http://www.gentoo.org/doc/en/gentoo-x86+raid+lvm2-quickinstall.xml |
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http://en.gentoo-wiki.com/wiki/Software_RAID_Install |
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|
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Kind regards, |
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der Max |
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|
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> 2. Erm..okay, I am gonna say, what magic I want and then ask your way. |
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> I first started making gzipped tar balls as follows: |
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> |
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> tar czpf /media/backups/userA-`date +%Y.%m.%d`.tgz -X userA-excludelist /etc |
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> |
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> But these can get huge especially for home dirs. I also want safe dvd |
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> copies. |
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> Though I can find enough space on the external drives, I don't trust them |
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> any more. See above..sigh..(No I recovered about one third of it with |
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> testdisk/photorec |
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> which names them as file000001 file00002.. and half them are zero |
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> sized.. which |
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> quite justifies my agony) |
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> |
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> Here is what I wanna do. I want to have only one big backup for, say, |
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> userA-2010.08.07.tgz and other small backup tars containing only the |
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> files/folders that were modified since last update, 2010.08.07, as |
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> userA-diff-2010.08.14.tgz, userA-diff-2010.08.21.tgz, |
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> userA-diff-2010.08.28.tgz |
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> etc. Now if I want to take the userA back to the future, 2010.08.21, I |
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> want to |
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> do it by first extracting the huge tar userA-2010.08.07.tgz and then the |
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> tiny |
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> backup userA-diff-2010-08-21.tgz. |
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> |
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> But the thing is I don't know how to do this. I am hoping maybe you can |
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> tell me |
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> how to of it as well as a better way of doing backups. |
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> |
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> By the way, since I want dvd backups as well, and I want to use +rw dvds |
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> so I |
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> can overwrite old backup after a while, what is best way of ensuring the |
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> integrity and safety of them. Is it a good idea to use truecrypt |
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> containers? Or |
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> nothing tops signing and encrypting with gpg? |
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> |
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> Thanks for any comment in advance. |
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> |
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