mfstopology.cfg(5) This is part of MooseFS mfstopology.cfg(5)NAMEmfstopology.cfg - MooseFS network topology definitions
DESCRIPTION
The file mfstopology.cfg contains assignments of IP addresses into net‐
work locations (usually switch numbers). This file is optional. If your
network has one switch or decreasing traffic between switches is not
necessary then leave this file empty.
SYNTAX
Syntax is:
ADDRESS SWITCH-NUMBER
Lines starting with # character are ignored as comments.
ADDRESS can be specified in several forms:
* all addresses
n.n.n.n single IP address
n.n.n.n/b IP class specified by network address and bits number
n.n.n.n/m.m.m.m IP class specified by network address and mask
f.f.f.f-t.t.t.t IP range specified by from-to addresses (inclusive)
SWITCH-NUMBER can be specified as any positive 32-bit numer.
NOTES
If one IP belongs to more than one definition then last definition is
used.
As for now distance between switches is constant. So distance between
machines is calculated as: 0 when IP numbers are the same, 1 when IP
numbers are different, but switch numbers are the same and 2 when
switch numbers are different
Distances are used only to sort chunkservers during read and write
operations. New chunks are still created randomly. Also rebalance rou‐
tines do not take distances into account.
COPYRIGHT
Copyright (C) 2016 Jakub Kruszona-Zawadzki, Core Technology Sp. z o.o.
This file is part of MooseFS.
MooseFS is free software; you can redistribute it and/or modify it
under the terms of the GNU General Public License as published by the
Free Software Foundation, version 2 (only).
MooseFS is distributed in the hope that it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
for more details.
You should have received a copy of the GNU General Public License along
with MooseFS; if not, write to the Free Software Foundation, Inc., 59
Temple Place, Suite 330, Boston, MA 02111-1307 USA or visit
http://www.gnu.org/licenses/gpl-2.0.html
SEE ALSOmfsmaster(8), mfsmaster.cfg(5)MooseFS 2.0.83-1 January 2016 mfstopology.cfg(5)
