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SubjectRe: Ext2fs and hashed table.
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Hi,

Stephen C. Tweedie wrote:
>
>[ extent mapping ]
>
>The main problem with this technique is that it completely falls apart
>when you consider Unix semantics for files with holes --- you end up
>having to reshuffle the entire extent map any time you insert new data
>by writing into a hole. The current plan is simply to convert
>on-the-fly from extent mapped to direct indexed block mapping if such
>a write occurs.
>
Moving the extent mp around shouldn't be _too_ difficult...

There's also the possibility that you need to move a block from the middle
of an extent someplace else (file system inconsistency, bad block
discovered on media).

--
Nobody ever forgets where he buried the hatchet. -- Kin Hubbard
--
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