Re: Strange taskqueue timeouts

[Michael Neumann <mneumann@xxxxxxxx>]

Jeremy Chadwick schrieb:
> On Wed, Nov 26, 2008 at 12:52:59PM +0100, Michael Neumann wrote:
> > I just rsynced my harddisk to a DragonFly box. After that, the box became more and more unusable (at first I could still
> > ping and ssh into it, then after a few seconds this also didn't worked anymore). It's a pretty "old" DragonFly I am using,
> > so probably I should compile a more recent kernel and the problem goes away. But maybe it's something worse, so I'll better
> > report it...
>
> These are a known problem with the FreeBSD ATA layer.  No one's been
> able to figure out what the true cause is, but sometimes they can
> indicate disk errors if the LBA shown is consistent (in your case, it
> looks like it may be).

Too strange that after a reboot or reset, the disk was completely missing.
There was no ad4 (or ar0) any more. It appeared again, after powering down
the box completely.

> Prior to my recent departure from the FreeBSD Project, I documented this
> common problem.  And no, there is no fix for it; it requires a large
> amount of time and money (replacing hardware) to troubleshoot.

Thanks! I'll take a close look if this kind of problems appear again.

Regards,

  Michael