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toralf
Developer
Joined: 01 Feb 2004
Posts: 3925
Location: Hamburg
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 Posted: Fri Mar 30, 2012 5:12 pm Post subject: fs type for an USB backup disk having mostly hard links |
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| I'm using rsync with "--link-dest="to backup my entire system. Therefore the vast majority of fs operations are hard linking an already existing file at the external USB drive into a newly created directory at that disk. Currently I'm using ext2. Is there any other fs in the wild with a better performance for this case ? |
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eccerr0r
Watchman
Joined: 01 Jul 2004
Posts: 9711
Location: almost Mile High in the USA
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| Posted: Mon Apr 02, 2012 7:23 am Post subject: |
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I don't understand...hard linking files is not exactly a backup, if one copy is modified, the other is too...
I also don't understand... you can't hard link across filesystems... what are you doing here?
I wish I could suggest lessfs, because that's a great backup method, except it doesn't work properly. Performance is miserable...
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Intel Core i7 2700K/Radeon R7 250/24GB DDR3/256GB SSD
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toralf
Developer
Joined: 01 Feb 2004
Posts: 3925
Location: Hamburg
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| Posted: Mon Apr 02, 2012 7:37 am Post subject: |
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| eccerr0r wrote: | | I don't understand...hard linking files is not exactly a backup, if one copy is modified, the other is too |
the hard links are made at the destination hdisk form a reference backup directory (usually from the previous step) to the current destination directory - if the file at the source directory doesn't change - that's why rsync is a nifty performant tool. |
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