Kernel Dump when accessing second drive

Dylan Reinhold dylan at ocnetworking.com
Sun May 23 12:24:02 PDT 2010


On 05/23/2010 09:26 AM, Matthew Dillon wrote:
:It still crashed, but I'm not sure it is taking the command.
:
:# natacontrol mode ad6 PIO4
:current mode = SATA150
:
:Is that correct for it to still report SATA150?
:
:Thanks,
:Dylan
     The UDMA/PIO stuff might not be adjustable if its a SATA controller
     emulating an IDE controller.
     I think what is happening here is the NATA driver is detaching the
     drive and destroying the related dev structures before it finishes
     cleaning out any pending I/O's, so then when it tries to ad_done()
     the request it winds up blowing through dead structures.
     There must be some error messages reported in the console output
     that we haven't seen yet.  You can try:
     dmesg -N kern.0 -M vmcore.0

     And see if any other messages above the 'ad6: FAILURE' message are
     present.
					-Matt
					Matthew Dillon
					<dillon at backplane.com>
   
Here is the complete dmesg from the last crash
http://leaf.dragonflybsd.org/~dylan/dmesg.18.txt
Thanks,
Dylan





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