mfstopology.cfg - LizardFS network topology definitions
The file mfstopology.cfg
contains assignments of IP addresses into
network 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.
Lines starting with #
character are ignored.
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)
can be specified as any positive 32-bit numer.
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
numbers are different, but switch numbers are the same and 2
switch numbers are different
Distances are used only to sort chunkservers during read and write operations.
New chunks are still created randomly. Also rebalance routines do not take
distances into account.
Copyright 2008-2009 Gemius SA, 2013-2015 Skytechnology sp. z o.o.
LizardFS 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 3.
LizardFS 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
LizardFS. If not, see http://www.gnu.org/licenses/.