Messages in this thread | | | Date | Mon, 17 May 1999 12:04:00 +0100 (GMT) | From | Matthew Kirkwood <> | Subject | Re: Journalling of Metadata in ext2fs? |
| |
On Sun, 16 May 1999, Steve Bergman wrote:
> Is there a way (in 2.2.8) to turn on journalling or synchronous writing > of metadata without turning on synchronous writing of the data. What > are the pros/cons of doing this. I have seen this discussed a long time > ago in an thread somewhere in which Linus was debating this with FreeBSD > folks but can't find that thread now. It seems to me he said that Linux > supportted it but that it was turned off by default because it was "the > wrong thing to do". To my mind, however, It could be good for a new > server in which the files in the news spool filesystem are numerous > small files, none of which are really all that critical individually. > Thanks for any input. fsck on large mail servers can be a real pain.
Linux does not support synchronous metadata, except as a side-effect of completely synchronous filesystems. Stephen Tweedie (sct@redhat.com) is working on journalling extensions to ext2 and the vfs/block device layers, but I doubt you'll see them before mid-2.3. They're described in a paper at ftp://ftp.uk.linux.org/pub/linux/sct/fs/jfs/.
Stephen - could some of the API be exported to userspace for use by things like databases which want similar transaction support?
Matthew.
- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.rutgers.edu Please read the FAQ at http://www.tux.org/lkml/
| |