Processes blocked on ufs or getblk

[Robert Watson]

On Tue, 27 Jan 2004, Chip Norkus wrote:

> On Tue Jan 27, 2004; 10:36AM -0500 Robin P. Blanchard propagated the following:
> > 
> [snip]
> > 
> > 
> > As seen previously on this list, I'm also seeing processes getting stuck in
> > in "getblk" state. I'm seeing this on a dell 2650 (smp enabled, acpi enabled,
> > aac filesystem). I'm also more than willing to try out any patches anyone may
> > cook up. 
> > 
> 
> Me too!  I hate to bump this thread (again), but it seems like there is
> almost zero interest in this particular bug, and it's pretty serious. 
> I've got a spare 2650 at work with a serial console and I'd be willing
> to let some developers take a shot at it.  The bug seems to be fairly
> reproduceable on new filesystems/installations. 

There is interest in this bug, and a couple of people are running into it. 
Unfortunately, it's also a bug where the expertise necessary to
explore/fix it in much detail is fairly narrowly distributed. I've seen at
least one report that was sent to Jeff Roberson and Kirk McKusick.  You
might want to CC kirk at mckusick.com directly...  We should get this on the
5.3-TODO list to make sure it's getting visibility. 

Robert N M Watson             FreeBSD Core Team, TrustedBSD Projects
robert at fledge.watson.org      Senior Research Scientist, McAfee Research


> 
> > ---------------------------------------
> > Robin P. Blanchard
> > Systems Integration Specialist
> > Georgia Center for Continuing Education
> > fon: 706.542.2404 < > fax: 706.542.6546
> > ---------------------------------------
> > 
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> 
> -chip
> --
> personal: chip norkus; renaissance hacker;        wd at teleri.net
> work:     systems engineer @ lunarpages, inc.;    chip at lunarpages.com
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