Re: panic: softdep_deallocate_dependencies: unrecovered I/O error (but no I/O error)

[Andrew Doran <ad%netbsd.org@localhost>]

On Mon, Nov 24, 2008 at 10:51:15PM +0100, Edgar Fu? wrote:

> So I just go another panic on the file server:
> 
> raid1: IO failed after 5 retries
> raid1: IO failed after 5 retries
> raid1: IO failed after 5 retries
> /export/mail: got error 5 while accessing filesystem
> panic: softdep_deallocate_dependencies: unrecovered I/O error
> 
> The funny thing is there's actually no I/O error (at least nothing in dmesg).

No other messages?

> Upon reboot, fsck showed nothing unusual, just the usual few unref files and
> low block counts.
> 
> Any ideas?

Note that our softdep implementation has no capability to recover from
I/O errors whatsoever, so it just panics. This is one reason we will be
replacing it with journalling in 6.0.

Cheers,
Andrew