=?ISO-8859-1?Q?Jorge_Acereda_Maci=E1?= wrote:
Simon Burge wrote:
No ideas offhand. That's a page size which may or may not mean
anything.
I wonder what happens if you do something like:
dd if=/netbsd of=/tmp/foo bs=4k count=1 seek=1
do you zeros or real data at 0x1000 in /tmp/foo ? Still, I'm not
sure what that proves either if it works or not...
Interesting. I got two identical chunks at 0x0000 and 0x1000 which are
in fact the data at 0x0000 in /netbsd.
Want to hear something really annoying? if I use dd if=/netbsd
of=/tmp/foo instead of cp, I get an exact replica.
I think cp uses mmap instead of read, but still uses writes normally?
Maybe try regress/sys/uvm/mmap ?