On Fri, Jan 15, 2010 at 05:43:09AM -0600, Mike Christie wrote: > On 01/15/2010 03:33 AM, Pasi Kärkkäinen wrote: > >On Fri, Jan 15, 2010 at 02:41:14AM -0600, Mike Christie wrote: > >>On 01/15/2010 02:33 AM, Mike Christie wrote: > >>>Hey, > >>> > >>>In the open-iscsi git tree there is now offload boot support. The driver > >>>must support ibft or OF. This means that bnx2i and cxgb3i are supported. > >>>If you run > >>> > >>>iscsistart -b > >>>or > >>>iscsiadm -m fw -l > >>> > >>>it will create sessions using the offload card that was used for boot. > >>> > >>> > >>>iscsiadm -m discovery -t fw > >>> > >>>This will create ifaces or update existing ones with the ibft/of info > >>>for the offload card, and it will set things up so the targets in > >>>ibft/of are setup in the node db to accessed through the card. > >>> > >>>However, because I am not sure if any distros can support this and it > >>>conflicts with the old behavior I turned it off by default. To turn it > >>>on you need to compile the userspace code with OFFLOAD_BOOT_SUPPORTED. > >>> > >>> > >>>To support this, distros or users that like pain, should add the offlaod > >>>driver (cxgb3i or bnx2i) to the initramfs, and for bnx2i you need to > >>>also throw in the brcm or uip (depends on the code version/base) daemon > >>>in the initramfs and start it before running iscsistart or iscsiadm. > >>> > >> > >>Oh yeah one other note. For bnx2i, you also need to bring up some other > >>bnx2/bnx2x nic still. This requires a kernel fix. For cxgb3i this is not > >>needed. > > > >Hmm.. can you be more speficic? if eth0 has offloaded boot configured, > >what do you need to do for eth1, because of the bug? > > > > I should not have said fix above. Maybe I should have said improvement. > > I meant to say bnx2i still has the same start up reqruirements as it did > before, and so you have to do the network startup junk you had to do > nornally but in the initramfs when booting. > > Have you got to use your broadcom card yet? If not it is good you saw > the post first. Basically the card has a iscsi function and a net > function. You have to set both up to be able to use the iscsi side. >
Not yet unfortunately.. I'll be testing this during the upcoming weeks. > Let's say you have a broadcom card with one port. The net interface is > called eth0. Set that up like you normally would and bring it up with > ifup. Then because of how bnx2i is designed the iscsi side and network > side sort of work together. It is like this with boot or not. So then > when you set up the iscsi iface for eth0, the ip address for the iscsi > iface has to be on the same subnet as eth0, and eth0 has to be up when > you use the iscsi iface with bnx2i. > Thanks for the explanation! It's clear now. -- Pasi
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