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

To: tech-kern%netbsd.org@localhost
Subject: panic: softdep_deallocate_dependencies: unrecovered I/O error (but no I/O error)
From: Edgar Fuß <ef%math.uni-bonn.de@localhost>
Date: Mon, 24 Nov 2008 22:51:15 +0100

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).

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

Any ideas?

Follow-Ups:
- Again: panic: softdep_deallocate_dependencies: unrecovered I/O error (but no I/O error)
  - From: Edgar Fuß
- Re: panic: softdep_deallocate_dependencies: unrecovered I/O error (but no I/O error)
  - From: Andrew Doran
- saving RAIDframe parity accross a panic
  - From: Edgar Fuß
- Re: panic: softdep_deallocate_dependencies: unrecovered I/O error (but no I/O error)
  - From: Greg Oster

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