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Re: Speeding up dpkg, a proposal

On Thu, Mar 3, 2011 at 8:33 AM, Marius Vollmer <marius.vollmer@nokia.com> wrote:
> And in the big picture, all we need is some guarantee that renames are
> comitted in order, and after the content of the file that is being
> renamed.  I have the impression that all reasonable filesystems give
> that guarantee now, no?

No, they took shortcuts in the implementation and commit the rename
before the source file.

> Hmm, right.  We could keep a list of all files that need fsyncing, and
> then fsync them all just before writing the checkpoint.

Instead of fsync you might want to use the async Linux specific sync options.

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