Re: XFS from SGI and OpenBSD

[Chris <cl@escape.ca>]

At 09:16 AM 22/02/2002 +1100, Darren Reed wrote:
>In some mail from tolls, sie said:
> >
> > You might check out:
> > http://www.openbsd.org/faq/faq9.html
> >
> > Specifically the section which says:
> > "OpenBSD does NOT support Journaling Filesystems like ReiserFS, IBMs
> > JFS or SGIs XFS.  Instead we use Soft Updates."
>
>To the best of my knowledge, "soft updates" are not the basis of a
>journalling filesystem.  Instead, it is about when meta data on the
>disk is updated vs data on the disk.  If your box crashes (or loses
>power) and the disk isn't "clean" at bootup, fsck doesn't have a
>transaction log it can use (as you do with journalling filesystems)
>and so must check the entire partition.

Sorta.  Give 
http://www.usenix.org/publications/library/proceedings/usenix2000/general/full_papers/seltzer/seltzer_html/index.html 
a read when you have some time.

Sorry about the line wrapping.

While I can't see that it would be a bad thing to have journaling FS 
support availible under OpenBSD, the developers have made it pretty clear 
in the past that it's not of interest to them.  As usual with Free/Open 
software, someone is going to have to do it themselves if they really want it.

Regards,
Chris