[stgt] [PATCH 0/2] RFC - Double-linked list backing store.

[FUJITA Tomonori]

On Thu, 21 Aug 2008 20:33:03 +1000
"ronnie sahlberg" <ronniesahlberg at gmail.com> wrote:

> > To support variable block, metadata needs to be kept for each block.
> >
> 
> Since this will be a structure of a handful of bytes for each of
> possibly bilions of blocks   extended attributes might be suboptimal
> for storing this partucular metadata.
> 
> Due to the massive amount of metadata required for the
> "per-block-metadata" you probably want a non-extended attributes
> method for that.   separate file?

Mark, can you summarize the requirements of the metadata of ssc?

- how much bytes does the metadata need?

- can we know how much bytes we will need in the future when we create
a ssc file? (or we need to enlarge the metadata as the need arises?)


feel free to add new items.


> For all other types of metadata, which may be shared with MMC, which
> is also a very small amount of metadata, like media-serial-number,
> barcode, mam-data etc    for those i think extended attributes are
> best.
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