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On 23/07/12 19:24, Jarry wrote: |
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> On 23-Jul-12 16:29, Nikos Chantziaras wrote: |
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>> On 22/07/12 20:18, Jarry wrote: |
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>>> Hi, |
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>>> I want to backup my whole hard-drive (8 partitions) with: |
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>>> # dd if=/dev/sda | gzip > /path/image.gz |
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>>> |
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>>> In order to achieve good compression level I'd like to wipe |
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>>> out all empty space with zeros. How can I do that? |
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>> |
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>> That's the wrong way to do it. You should use a tool that only copies |
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>> the data, and then also backup the partition table. |
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>> |
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>> Or use partimage/clonezilla like Neil mentioned which does all that |
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>> automatically. |
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> |
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> I know those tools. Unfortunatelly, they do not support |
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> "smart copying" (only used sectors) if software raid is used. |
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> |
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> So I'm back on the beginning: I can clone only the whole |
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> drive (all sectors). No matter if I use dd, clonezila or |
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> partimage... |
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|
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There's good ol' tar too :-) I usually use that one, or rsync if I need |
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to clone rather than back-up and compress. Those two have never let me |
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down yet. |
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