cvs commit: src/sys/kern vfs_subr.c

[Nate Lawson]

Peter Wemm wrote:
> On Friday 20 August 2004 12:21 pm, Don Lewis wrote:
> 
>>  Modified files:
>>    sys/kern             vfs_subr.c
>>  Log:
>>  Don't attempt to trigger the syncer thread final sync code in the
>>  shutdown_pre_sync state if the RB_NOSYNC flag is set.  This is the
>>  likely cause of hangs after a system panic that are keeping crash
>>  dumps from being done.
> 
> 
> The hang that I saw was because interrupts are broken (they just stop 
> for no apparent reason) and the ata_shutdown sync hooks are not in 
> polled mode (which is correct - interrupts are supposed to be enabled 
> at this point, and are for normal shutdowns). 

Did you got the "interrupt storm for xxx" message before this happened? 
  I think the check for this is too sensitive -- it is triggered on 
resume by my an0 card.  That's the only way I've seen interrupts stop 
occuring during normal operation.

-Nate