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Date: Mon, 17 Sep 2007 19:00:30 -0400 From: Andy Gospodarek <andy@...yhouse.net> To: Jay Vosburgh <fubar@...ibm.com> Cc: netdev@...r.kernel.org Subject: Re: [PATCH] bonding: update some distro-specific documentation On Fri, Sep 07, 2007 at 11:27:49AM -0700, Jay Vosburgh wrote: > Andy Gospodarek <andy@...yhouse.net> wrote: > > This all looks fine except for one nit (well, request for extra > detail, really): > > >@@ -802,15 +802,20 @@ BROADCAST=192.168.1.255 > > ONBOOT=yes > > BOOTPROTO=none > > USERCTL=no > >+BONDING_OPTS="mode=balance-alb miimon=100" > > > > Be sure to change the networking specific lines (IPADDR, > > NETMASK, NETWORK and BROADCAST) to match your network configuration. > >+You also need to set the BONDING_OPTS= line to specify the desired > >+options for your bond0 interface. Specifying bonding options in this > >+way is the preferred method for configuring bonding interfaces. > > Can you add something here that mentions that, for the > arp_ip_target option, it has to be supplied as "arp_ip_target=+10.0.0.1" > and not just "arp_ip_target=10.0.0.1"? Also, multiple targets require > multiple instances of the arp_ip_target option; it doesn't work to put > multiple IP addresses as in the module option (i.e., > "arp_ip_target=10.0.0.1,10.0.0.2"). > > This is necessary because ifup-eth isn't adding the "+" when it > translates the option for use with sysfs or parsing the multiple IP > address syntax. > Third time's the charm, right? (an arp_interval parameter would be nice) Signed-off-by: Andy Gospodarek <andy@...yhouse.net> --- bonding.txt | 53 ++++++++++++++++++++++++++++++++--------------------- 1 files changed, 32 insertions(+), 21 deletions(-) diff --git a/Documentation/networking/bonding.txt b/Documentation/networking/bonding.txt index 1da5666..2402412 100644 --- a/Documentation/networking/bonding.txt +++ b/Documentation/networking/bonding.txt @@ -755,9 +755,9 @@ the system /etc/modules.conf or /etc/modprobe.conf configuration file. ------------------------------------------ This section applies to distros using a version of initscripts -with bonding support, for example, Red Hat Linux 9 or Red Hat -Enterprise Linux version 3 or 4. On these systems, the network -initialization scripts have some knowledge of bonding, and can be +with bonding support, for example, Red Hat Linux 9, Red Hat Enterprise +Linux version 3, 4 or 5, Fedora, etc. On these systems, the network +initialization scripts have some knowledge of bonding, and can be configured to control bonding devices. These distros will not automatically load the network adapter @@ -802,18 +802,27 @@ BROADCAST=192.168.1.255 ONBOOT=yes BOOTPROTO=none USERCTL=no +BONDING_OPTS="mode=active-backup arp_interval=60 arp_ip_target=+192.168.1.254" Be sure to change the networking specific lines (IPADDR, NETMASK, NETWORK and BROADCAST) to match your network configuration. - - Finally, it is necessary to edit /etc/modules.conf (or +You also need to set the BONDING_OPTS= line to specify the desired +options for your bond0 interface. Specifying bonding options in this +way is the preferred method for configuring bonding interfaces. The +options specified in BONDING_OPTS are identical to the bonding module +parameters except for the arp_ip_target field. Each target should be +included as a separate address and should be preceded by a '+' to +indicate it should be added to the list of queried targets. + + It is no longer necessary to edit /etc/modules.conf (or /etc/modprobe.conf, depending upon your distro) to load the bonding module with your desired options when the bond0 interface is brought up. The following lines in /etc/modules.conf (or modprobe.conf) will -load the bonding module, and select its options: +load the bonding module, and select its options but this is no longer +the preferred method. alias bond0 bonding -options bond0 mode=balance-alb miimon=100 +options bond0 mode=active-backup arp_interval=60 arp_ip_target=192.168.1.254 Replace the sample parameters with the appropriate set of options for your configuration. @@ -826,8 +835,9 @@ up and running. --------------------------------- Recent versions of initscripts (the version supplied with -Fedora Core 3 and Red Hat Enterprise Linux 4 is reported to work) do -have support for assigning IP information to bonding devices via DHCP. +Fedora Core 3 and Red Hat Enterprise Linux 4 and later is reported to +work) do have support for assigning IP information to bonding devices +via DHCP. To configure bonding for DHCP, configure it as described above, except replace the line "BOOTPROTO=none" with "BOOTPROTO=dhcp" @@ -837,18 +847,19 @@ is case sensitive. 3.2.2 Configuring Multiple Bonds with Initscripts ------------------------------------------------- - At this writing, the initscripts package does not directly -support loading the bonding driver multiple times, so the process for -doing so is the same as described in the "Configuring Multiple Bonds -Manually" section, below. - - NOTE: It has been observed that some Red Hat supplied kernels -are apparently unable to rename modules at load time (the "-o bond1" -part). Attempts to pass that option to modprobe will produce an -"Operation not permitted" error. This has been reported on some -Fedora Core kernels, and has been seen on RHEL 4 as well. On kernels -exhibiting this problem, it will be impossible to configure multiple -bonds with differing parameters. + Initscripts packages that are included with Fedora 7 and Red +Hat Enterprise Linux 5 support multiple bonding interfaces by simply +specifying the appropriate BONDING_OPTS= in ifcfg-bondX where X is +the number of the bond. Other distros may not include support in +initscripts for multiple bonding interfaces, so you may need to follow +the process as described in the "Configuring Multiple Bonds Manually" +section, below. + + It has been observed that much older kernels are apparently +unable to rename modules at load time (the "-o bond1" part). Attempts +to pass that option to modprobe will produce an "Operation not +permitted" error. On kernels exhibiting this problem, it will be +impossible to configure multiple bonds with differing parameters. 3.3 Configuring Bonding Manually with Ifenslave ----------------------------------------------- - To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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