08-19-2002
Panic in SCO 5.0
It happened twice this day. Suddenly SCO server display next message:
PANIC ktrap -kernel mode trap type 0X000000E
cannot dump 262045 pages to dump dev hd(1/41) space for only 131072 pages
Dump not completed
Then, server just wait to turn it off.
Why is it happening?
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dump(9E) Driver Entry Points dump(9E)
NAME
dump - dump memory to device during system failure
SYNOPSIS
#include <sys/types.h>
#include <sys/ddi.h>
#include <sys/sunddi.h>
intprefixdump(dev_t dev, caddr_t addr, daddr_t blkno, int nblk);
INTERFACE LEVEL
Solaris specific (Solaris DDI). This entry point is required. For drivers that do not implement dump() routines, nodev(9F) should be used.
ARGUMENTS
dev Device number.
addr Address for the beginning of the area to be dumped.
blkno Block offset to dump memory.
nblk Number of blocks to dump.
DESCRIPTION
dump() is used to dump a portion of virtual address space directly to a device in the case of system failure. It can also be used for
checking the state of the kernel during a checkpoint operation. The memory area to be dumped is specified by addr (base address) and nblk
(length). It is dumped to the device specified by dev starting at offset blkno. Upon completion dump() returns the status of the transfer.
When the system is panicking, the calls of functions scheduled by timeout(9F) and ddi_trigger_softintr(9F) will never occur. Neither can
delay(9F) be relied upon, since it is implemented via timeout(). See ddi_in_panic(9F).
dump() is called at interrupt priority.
RETURN VALUES
dump() returns 0 on success, or the appropriate error number.
SEE ALSO
cpr(7), nodev(9F)
Writing Device Drivers
SunOS 5.10 9 Oct 2001 dump(9E)