10/stable panic: softdep_deallocate_dependencies: dangling deps

[Dmitry Sivachenko]

On 01 июля 2014 г., at 22:47, Edward Tomasz Napierała <trasz at FreeBSD.org> wrote:
> 
> Soft updates cannot gracefully handle IO errors.  It _will_ panic.
> You can either prevent errors from happening by using redundancy
> (ie. mirroring), or disable soft updates.  That's how it works,
> sorry.
> 
> In theory it would be possible to prevent this from happening;
> panic here is actually to terminate the system before it corrupts
> data, and in situations like this one, where the disk is no longer
> accessible, it's not possible to corrupt anything.  IIRC I've
> actually added a workaround for that a while ago, but, as you can
> see, it's not enough, and I don't understand soft updates well
> enough to fix it properly.
> 


Will ZFS fail without a panic? Or UFS without SU is the only choice?