On Wed, 21 Feb 2007, John Baldwin wrote:
On Wednesday 21 February 2007 05:36, Robert Watson wrote:
On Tue, 20 Feb 2007, Nick Hibma wrote:
n_hibma 2007-02-20 22:04:23 UTC
FreeBSD src repository
Modified files:
sbin/mdconfig mdconfig.8 mdconfig.c
Log:
Kris suggested that swap is a better choice as a default than malloc.
MFC: 1 week
Are you sure this should be MFC'd? While I agree with the change in
principle, it will cause systems currently using malloc-backed md devices
to mysteriously switch to swap-backed. How will this behave on systems
that don't have swap, such as pure diskless systems not using NFS-backed
swap? This isn't a strong objection per se, but it could be that rc.d
scripts need tweaking for diskless environments if they currently do use
malloc-back md devices based on that being the default.
I don't think this changes the default for anything in 6.x. He changed the
default for his patch from yesterday that made it assume a type if you do
'mdconfig -s <size>'. Currently you have to do:
'mdconfig -a -t malloc -s <size>' or 'mdconfig -a -t swap -s <size>'
but Nick changed it so just '-s <size>' implied '-a -t malloc', and now he's
changed it to imply '-a -t swap'.
Ah, OK. This sounds reasonable.
Thanks!
Robert N M Watson
Computer Laboratory
University of Cambridge
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