# 
# Qos Central Config File
#
# The QoS Central Config file offers a new feature for snfs admin to
# define the bandwidth reservation for non-rtio IOs (rvio) on certain clients
# from a central place, i.e. the fsm server. The configuration doesn't affect
# the normal rtio requests, but it affects the bandwidth allocation to non-rtio
# requests. Some of the characteristics of rvio are:
# 1. rtio has higher priority, it is satisfied first. rvio will use whatever
#    bandwidth is left.
# 2. rvio reservation is not guaranteed. Instead, it is adjusted dynamically. 
#    When there are new rvio or rtio requests, the bandwidth reserved for 
#    clients with previous rvio requests is readjusted. Each rvio client will 
#    get the rvio bandwidth reserved proportional to its request amount.
# 3. The rvio bandwidth allocated for a client is the total bandwidth for 
#    non-rtio requests on the client. The bandwidth (token) will not return as 
#    normal non-rtio client does if it's been idle for a hold time. non-rtio 
#    requests on clients with rvio reservation is subject to the same 
#    throttling mechanism as non-rtio requests on normal clients.
# 4. Other active non-rtio clients equally share the bandwidth left over after
#    the possible rtio and rvio allocations. If no bandwidth is left, the 
#    minimal reserved bandwidth (defined in stripe group section of file system
#    config file) is used.
#
# The central config file has the file system name with suffix "_rvio.opt"
# as its file name and is located under /usr/cvfs/config on the fsm server.
# For example, if the file system is "default", then the central config file
# for the file system has the file name "default_rvio.opt".
#
# A central config file has multiple entries, each entry defines the rvio
# reservation for a client. The fields of an entry are:
# 	host bw-type sg=yy,[sg=yy]
# "host" is the host name, ip address (either V4 or V6), or FQDN, etc. of the 
# client. Note: the host name should be able to be resolved (converted to an 
# valid IP address) by the fsm server. 
# "bw-type" is the type of bandwidth to be specified. Two options exist:
# "qosmb" dicates that the subsequent value for bandwidth reservation uses mb 
# (mega byte per second) as the unit. "qosios" means the subsequent value uses 
# "ios/s" as the unit.
# sg stands for stripe group. You may specify a stripe group by the sg name,
# or by stripe group number starting from 0 for the first stripe group. In
# addition, if you'd like to specify the same rvio bandwidth reservation for 
# all stripe groups, you can use "*=yy" form.
#
# In the config file, any line starts with "#" is considered as comment line 
# and is ignored.
#
# examples:
# box1.xyz.com	qosios 2=200,4=50,sg5=45
# 10.10.1.8	qosmb *=60