On Sep 14, 2005, at 4:13 PM, John-Mark Gurney wrote:

IIRC GEOM should handle ENOMEMs by retrying the IO, but I'm asking just in
case - are these errors something I should worry about?


I/O errors suggest your disk is failing.


Unless for some reason his disk is running out of memory:
grep 12 /usr/include/errno.h
#define    ENOMEM        12        /* Cannot allocate memory */

The error occurs when sys/vm/swap_pager:swapgeom_strategy() can't allocate a copy of an underlying I/O request buffer. The log message lies a bit; this isn't a physical disk I/O error.

--lyndon
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