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Diffstat (limited to 'README')
| -rw-r--r-- | README | 31 |
1 files changed, 29 insertions, 2 deletions
@@ -408,8 +408,9 @@ this the following is not needed for software iscsi. Warning!!!!!! This feature is experimental. The interface may change. When reporting bugs, if you cannot do a "ping -I ethX target_portal", then check your -network settings first. If you cannot ping the portal, then you will -not be able to bind a session to a NIC. +network settings first. Make sure the rp_filter setting is set to 0 or 2 +(see Prep section below for more info). If you cannot ping the portal, +then you will not be able to bind a session to a NIC. What is a scsi_host and iface for software, hardware and partial offload iscsi? @@ -427,6 +428,32 @@ structure. For each HBA port or for software iscsi for each network device (ethX) or NIC, that you wish to bind sessions to you must create a iface config /etc/iscsi/ifaces. +Prep: + +The iface binding feature requires the sysctl setting +net.ipv4.conf.default.rp_filter to be set to 0 or 2. This can be set +in /etc/sysctl.conf by having the line: + +net.ipv4.conf.default.rp_filter = N + +where N is 0 or 2. Note that when setting this you may have to reboot +the box for the value to take effect. + + +rp_filter information from Documentation/networking/ip-sysctl.txt: + +rp_filter - INTEGER + 0 - No source validation. + 1 - Strict mode as defined in RFC3704 Strict Reverse Path + Each incoming packet is tested against the FIB and if the interface + is not the best reverse path the packet check will fail. + By default failed packets are discarded. + 2 - Loose mode as defined in RFC3704 Loose Reverse Path + Each incoming packet's source address is also tested against the FIB + and if the source address is not reachable via any interface + the packet check will fail. + + Running: # iscsiadm -m iface |