Re: Help with debugging a trace
Re: Help with debugging a trace
On Sat, Dec 23, 2006 at 01:45:23PM +0800, Vince Loden wrote:
> Hi members,
>
> I was advised to post to this list to see if I could get any answers
> to a consistent problem I have. I had a 200 GB external drive mounted
> in an M9 case which I was using as a boot drive for my Mac mini G4.
> The casing power failed while I was using it and the 200 GB drive
> went from 189 GB formatted down to 129 GB and is unbootable. I bought
> a new 250 GB LaCie external as a new boot drive and re-installed the
> OS and copied as much files, docs, mp3s, pics etc that I could
> retrieve from the old drive. Now the computer crashes 3-4 times a day
> even unattended. The panic is as follows:
>
> panic(cpu 0 caller 0x000E3DDC): vnode_writedone: numoutput < 0
Without studying the info provided too deeply:
Does it only panic when the 200 GB drive is mounted? I'd guess
that the HFS+ (I assume) metadata structures are corrupted on your
200 GB drive - umount and run fsck (Darwin method) or Disk Utility
(Mac OS X) over the filesystem.
Either that, or there's unrelocatable bad blocks in the HFS+ metadata
structures that's causing problems. I haven't checked the source -
what does Darwin do on metadata write failures? Panic?
Second look at the panic string and backtrace, I'm guessing the
later.
--
Paul Ripke
Unix/OpenVMS/TSM/DBA
I love deadlines. I like the whooshing sound they make as they fly by.
-- Douglas Adams
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