Re: panic softdep_deallocate_dependencies

[Philip Guenther]

On Fri, Jul 19, 2013 at 1:13 PM, Roger Hammerstein <cheek...@live.com> wrote:
> i had another machine panic with this, and no disk errors.amd64, openbsd 5.3.
...
> ddb{0}> show panic
> softdep_deallocate_dependencies: unrecovered I/O error
> ddb{0}> trace
> Debugger() at Debugger+0x5
> panic() at panic+0xe4
> softdep_deallocate_dependencies() at softdep_deallocate_dependencies+0x43
> brelse() at brelse+0x68
> sd_buf_done() at sd_buf_done+0x7a
> mpi_intr() at mpi_intr+0x40
> Xintr_ioapic_edge18() at Xintr_ioapic_edge18+0xe8

So in the email thread you cited, the original poster turned off
softdeps and miod noted that should should avoid the panic.  You
haven't done so because...you like to panic?  softdeps speeds things
up for you so much that it makes up for the occasional panics?

(If I was hitting that, I might be tempted to add a printf() to the
default case of sd_buf_done() that showed the exact error and any
other info that might be pulled the from the xs, like the associated
buf's blkno and/or lblkno.)


Philip Guenther