gjournal & async

[Ivan Voras]

Pawel Jakub Dawidek wrote:
> On Sun, Apr 22, 2007 at 05:48:39PM +0200, Ivan Voras wrote:
>> Pawel Jakub Dawidek wrote:
>>> On Sun, Apr 22, 2007 at 02:43:29AM +0200, Ivan Voras wrote:
>>>> How does gjournal guarantee corectness if UFS is mounted async? AFAIK
>>>> the "async" handling of IO requests is done by the UFS, the writes are
>>>> not rescheduled at the GEOM layer?
>>> GJournal has some minimum knowledge about VFS. Before it does journal
>>> switch, it synchronize and suspends file system. This way we can be sure
>>> everything is on disk in a consistent state.
>> Thanks. So, this (async support) could actually work with other file
>> systems, like ext2 and msdos?
> 
> Once gjournal is taught about them, yes.

Then you're not interfacing in the VFS layer, you're hooking directly
into UFS?

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