misc/170077: if I/O errors accour on USB storage devices, complete system hangs

[Markus Klaschka]

>Number:         170077
>Category:       misc
>Synopsis:       if I/O errors accour on USB storage devices, complete system hangs
>Confidential:   no
>Severity:       non-critical
>Priority:       low
>Responsible:    freebsd-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Sun Jul 22 23:40:09 UTC 2012
>Closed-Date:
>Last-Modified:
>Originator:     Markus Klaschka
>Release:        9.0-Stable 13/7
>Organization:
mkDEV SL
>Environment:
no c/p, sorry ;)
>Description:
No idea if that HDD is damaged or the case/cable, but result is that complete X hangs on I/O errors on the device.
cpu, load, ints, ... all ok, nothing shows blockage of performance, but system blocks comletely for a few secs

no idea if that can be solved, but would be gret, as it on one side is very anoying and on the other is bad to tell people to use BSD, show them and than that...
>How-To-Repeat:
produce an I/O error by connecting an damaged disk to your system and mount it( should be still mountable )
>Fix:
that sits to deep as I could give any clues about it

>Release-Note:
>Audit-Trail:
>Unformatted: