Viewing: expected_clients.4
.TH EXPECTED_CLIENTS 4 2026-02-10 Lustre "Lustre Kernel Interfaces"
.SH NAME
epected_clients \- approximate total number of clients mountpoints
.SH SYNOPSIS
.SY "lctl set_param expected_clients"
.YS
.SS PROPERTIES
.TP
.B Access Permissions
.BR 644 " | " -rw-r--r--
.TP
.B Scope
Global
.TP
.B Config
Always present on the serveR
.TP
.B Initial default
.B expected_clients=1
.SH DESCRIPTION
.B expected_clients
stores the approximate number of client mounts that a server may have at one time.
Knowing this value during startup allows services to configure various tables,
tunable values, etc. appropriately for the system once it is fully started.
This avoids code having to make inaccurate guesses as to future system size.
.PP
The
.B expected_clients
value need only be an order-of-magnitude estimate for the client count.
It will automatically be updated on each server if the actual number of
clients mounted at any one time exceed the set value,
so it typically does not need to be explicitly set.
.SH MODULES
This parameter is in the following modules:
.EX
.B expected_clients
.EE
.SH EXAMPLES
Configure the system to expect about 1000 clients to connect:
.EX
.RB mgs# "lctl set_param -P expected_clients=1000"
.EE
.SH AVAILABILITY
.B expected_clients
is part of the
.BR lustre (7)
filesystem package since release 2.18.0.
.\" commit v2_17_50-225-g671e757102
.SH SEE ALSO
.BR at_max (4),
.BR conns_per_peer (4)
