From d8ad687e1a4c0343eb076902b11aff2b2b2c4b85 Mon Sep 17 00:00:00 2001 From: Harald Hoyer Date: Fri, 3 Jul 2015 13:30:40 +0200 Subject: [PATCH] network: add options to tweak timeouts rd.net.dhcp.retry= If this option is set, dracut will try to connect via dhcp times before failing. Default is 1. rd.net.timeout.dhcp= If this option is set, dhclient is called with "-timeout ". rd.net.timeout.iflink= Wait until link shows up. Default is 60 seconds. rd.net.timeout.ifup= Wait until link has state "UP". Default is 20 seconds. rd.net.timeout.route= Wait until route shows up. Default is 20 seconds. rd.net.timeout.ipv6dad= Wait until IPv6 DAD is finished. Default is 50 seconds. rd.net.timeout.ipv6auto= Wait until IPv6 automatic addresses are assigned. Default is 40 seconds. rd.net.timeout.carrier= Wait until carrier is recognized. Default is 5 seconds. --- dracut.cmdline.7.asc | 25 +++++++++++++++++++++++ modules.d/40network/ifup.sh | 26 ++++++++++++++++++++---- modules.d/40network/net-lib.sh | 36 ++++++++++++++++++++++++++++------ 3 files changed, 77 insertions(+), 10 deletions(-) diff --git a/dracut.cmdline.7.asc b/dracut.cmdline.7.asc index c7e3bd40..5f3dead1 100644 --- a/dracut.cmdline.7.asc +++ b/dracut.cmdline.7.asc @@ -572,6 +572,31 @@ NFS **rd.nfs.domain=**____:: Set the NFSv4 domain name. Will overwrite the settings in _/etc/idmap.conf_. +**rd.net.dhcp.retry=**____:: + If this option is set, dracut will try to connect via dhcp times before failing. + Default is 1. + +**rd.net.timeout.dhcp=**____:: + If this option is set, dhclient is called with "-timeout ". + +**rd.net.timeout.iflink=**____:: + Wait until link shows up. Default is 60 seconds. + +**rd.net.timeout.ifup=**____:: + Wait until link has state "UP". Default is 20 seconds. + +**rd.net.timeout.route=**____:: + Wait until route shows up. Default is 20 seconds. + +**rd.net.timeout.ipv6dad=**____:: + Wait until IPv6 DAD is finished. Default is 50 seconds. + +**rd.net.timeout.ipv6auto=**____:: + Wait until IPv6 automatic addresses are assigned. Default is 40 seconds. + +**rd.net.timeout.carrier=**____:: + Wait until carrier is recognized. Default is 5 seconds. + CIFS ~~~ **root=**cifs://[____[:____]@]____:____:: diff --git a/modules.d/40network/ifup.sh b/modules.d/40network/ifup.sh index 3cff725c..2f51e6d5 100755 --- a/modules.d/40network/ifup.sh +++ b/modules.d/40network/ifup.sh @@ -98,15 +98,33 @@ do_dhcp() { # event for nfsroot # XXX add -V vendor class and option parsing per kernel + local _COUNT=0 + local _timeout=$(getargs rd.net.timeout.dhcp=) + local _DHCPRETRY=$(getargs rd.net.dhcp.retry=) + _DHCPRETRY=${_DHCPRETRY:-1} + [ -e /tmp/dhclient.$netif.pid ] && return 0 if ! iface_has_link $netif; then - echo "No carrier detected" + warn "No carrier detected on interface $netif" return 1 fi - echo "Starting dhcp for interface $netif" - dhclient "$@" -1 -q -cf /etc/dhclient.conf -pf /tmp/dhclient.$netif.pid -lf /tmp/dhclient.$netif.lease $netif \ - || echo "dhcp failed" + + while [ $_COUNT -lt $_DHCPRETRY ]; do + info "Starting dhcp for interface $netif" + dhclient "$@" \ + ${_timeout:+-timeout $_timeout} \ + -1 -q \ + -cf /etc/dhclient.conf \ + -pf /tmp/dhclient.$netif.pid \ + -lf /tmp/dhclient.$netif.lease \ + $netif \ + && return 0 + _COUNT=$(($_COUNT+1)) + [ $_COUNT -lt $_DHCPRETRY ] && sleep 1 + done + warn "dhcp for interface $netif failed" + return 1 } load_ipv6() { diff --git a/modules.d/40network/net-lib.sh b/modules.d/40network/net-lib.sh index 1f77a154..de5273ca 100755 --- a/modules.d/40network/net-lib.sh +++ b/modules.d/40network/net-lib.sh @@ -486,7 +486,11 @@ parse_ifname_opts() { wait_for_if_link() { local cnt=0 local li - while [ $cnt -lt 600 ]; do + local timeout="$(getargs rd.net.timeout.iflink=)" + timeout=${timeout:-60} + timeout=$(($timeout*10)) + + while [ $cnt -lt $timeout ]; do li=$(ip -o link show dev $1 2>/dev/null) [ -n "$li" ] && return 0 sleep 0.1 @@ -498,7 +502,11 @@ wait_for_if_link() { wait_for_if_up() { local cnt=0 local li - while [ $cnt -lt 200 ]; do + local timeout="$(getargs rd.net.timeout.ifup=)" + timeout=${timeout:-20} + timeout=$(($timeout*10)) + + while [ $cnt -lt $timeout ]; do li=$(ip -o link show up dev $1) [ -n "$li" ] && [ -z "${li##*state UP*}" ] && return 0 sleep 0.1 @@ -509,7 +517,11 @@ wait_for_if_up() { wait_for_route_ok() { local cnt=0 - while [ $cnt -lt 200 ]; do + local timeout="$(getargs rd.net.timeout.route=)" + timeout=${timeout:-20} + timeout=$(($timeout*10)) + + while [ $cnt -lt $timeout ]; do li=$(ip route show) [ -n "$li" ] && [ -z "${li##*$1*}" ] && return 0 sleep 0.1 @@ -521,7 +533,11 @@ wait_for_route_ok() { wait_for_ipv6_dad() { local cnt=0 local li - while [ $cnt -lt 500 ]; do + local timeout="$(getargs rd.net.timeout.ipv6dad=)" + timeout=${timeout:-50} + timeout=$(($timeout*10)) + + while [ $cnt -lt $timeout ]; do li=$(ip -6 addr show dev $1 scope link) strstr "$li" "tentative" || return 0 sleep 0.1 @@ -533,7 +549,11 @@ wait_for_ipv6_dad() { wait_for_ipv6_auto() { local cnt=0 local li - while [ $cnt -lt 400 ]; do + local timeout="$(getargs rd.net.timeout.ipv6auto=)" + timeout=${timeout:-40} + timeout=$(($timeout*10)) + + while [ $cnt -lt $timeout ]; do li=$(ip -6 addr show dev $1) if ! strstr "$li" "tentative"; then strstr "$li" "dynamic" && return 0 @@ -561,8 +581,12 @@ iface_has_link() { [ -n "$interface" ] || return 2 interface="/sys/class/net/$interface" [ -d "$interface" ] || return 2 + local timeout="$(getargs rd.net.timeout.carrier=)" + timeout=${timeout:-5} + timeout=$(($timeout*10)) + linkup "$1" - while [ $cnt -lt 50 ]; do + while [ $cnt -lt $timeout ]; do [ "$(cat $interface/carrier)" = 1 ] && return 0 sleep 0.1 cnt=$(($cnt+1))