Re: Ext3 journal on its own device?

Stephen C. Tweedie
2001-09-18T10:29:13Z

Hi,

On Mon, Sep 17, 2001 at 05:54:40PM +0200, Juan wrote:

> I have been browsing the Ext3 source (version 0.0.7a), and it seems
> impossible to use a block device as an Ext3 journal. Is that true?.

In the 2.2 code (ext3-0.0.7a), the journal has to be part of the
filesystem. The current e2fsprogs and 2.4 ext3 code (ext3-0.9.9) does
support journals on other devices, but there's more support to be
added before it's truly complete (in particular we want to support
several filesystems journaling to a single shared journal spool.)

The separate-journal-disk code hasn't been tested as much as the
default journal-on-main-filesystem code, and it's not officially
supported, so the format might change in the future. But it should
work.

Cheers,
Stephen