btrfs-progs: docs: further improve space cache documentation #620
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- For the btrfs check option of clearing, indicate that - since it's actually a full removing - a new space cache may be generated on the next mount. - In the summary of the `clear_cache` mount option, don't mention that it rebuilds the cache, as the option itself is in principle only about the clearing and the rebuilding happens "automatically" (unless other options are used). - In the details mention, however that there is rebuilding unless prevented by mount option. - Remove the "if something has gone wrong", as the mount option would also remove the cache if nothing went wrong. Signed-off-by: Christoph Anton Mitterer <[email protected]>
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Strcturise the details more clearly by: - What it does/implications. - The different versions an their details. - What happens if both versions are present. - What happens with kernels that cannot use v2. - How each version can be disabled, cleared or removed. - Make it more clear that the default of "space cache v2" applies also if the option isn't given at all. Signed-off-by: Christoph Anton Mitterer <[email protected]>
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Correctly rebased on Is the old v1 then cleared or (as with |
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For the btrfs check option of clearing, indicate that - since it's actually a full removing - a new space cache may be generated on the next mount.
In the summary of the
clear_cachemount option, don't mention that it rebuilds the cache, as the option itself is in principle only about the clearing and the rebuilding happens "automatically" (unless other options are used).In the details mention, however that there is rebuilding unless prevented by mount option.
Remove the "if something has gone wrong", as the mount option would also remove the cache if nothing went wrong.