Re: Solaris ZFS on Linux [Was: Re: the " 'official' point of view"expressedby regarding reiser4 inclusion]

From: Avi Kivity
Date: Tue Aug 01 2006 - 05:36:21 EST

Matthias Andree wrote:

On Tue, 01 Aug 2006, Avi Kivity wrote:

> There's no reason to repack *all* of the data. Many workloads write and
> delete whole files, so file data should be contiguous. The repacker
> would only need to move metadata and small files.

Move small files? What for?

WAFL-style filesystems like contiguous space, so if small files are scattered in otherwise free space, the repacker should free them.

Even if it is "only" moving metadata, it is not different from what ext3
or xfs are doing today (rewriting metadata from the intent log or block
journal to the final location).

There is no need to repack all metadata; only that which helps in creating free space.

For example: if you untar a source tree you'd get mixed metadata and small file data packed together, but there's no need to repack that data.

error compiling committee.c: too many arguments to function

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