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+++ David [gentoo-user] [Wed, May 07, 2008 at 12:18:58AM +0200]: |
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> On Tuesday 06 May 2008 23:54:08 Andrew MacKenzie wrote: |
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> > If you're using 'dd' does that mean you're copying the entire filesystem |
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> > and not just the files? I believe that can run you into some issues if the |
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> > FS isn't read-only... |
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> What kind of issues? The idea is to copy the whole filesystem to another disk |
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> and keep it sync. And in case of "crisis" use dd from the backup to the |
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> original disk. |
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There is the possibility that something changes on disk and you've already |
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copied the 'references' to it in the journal or index. Thus making your |
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image inconsistent or corrupted. You also have files cached in memory not |
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yet written to disk, etc. It's also very inefficient copying all the empty |
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parts of your file system as well. |
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At the least you'll want to mount your file system read-only if you're |
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going to use dd to make a copy. |
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-- |
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// Andrew MacKenzie | http://www.edespot.com |
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// GPG public key: http://www.edespot.com/~amackenz/public.key |
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// You have acquired a scroll entitled 'irk gleknow mizk'(n).--More-- |
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// |
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// This is an IBM Manual scroll.--More-- |
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// |
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// You are permanently confused. |
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// -- Dave Decot |
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