Antonio da Silva Martins Junior
2011-Sep-09 12:00 UTC
[CentOS] CentOS5 with Dell Broadcom iSCSI Offload, does it work ?
Hi all,
After finding multiples answers to this question via google, but without
making it work on my servers. Has anybody iSCSI Offload working on a Dell
Server with Broadcom NICs ?
My environment: I'm running CentOS 5.6 CR, on a Dell PowerEdge R710 with
Broadcom Corporation NetXtreme II BCM5709 conecting to an EMC CX4-120 SAN,
via 2x Cisco 2960G-24TC-L switches. It's working without the iSCSI offload.
Thanks in advance,
Antonio.
--
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Antonio S. Martins Jr. - Support Analyst | "Only The Shadow Knows |
| Universidade Estadual de Maring? - Brasil| what evil lurks in the |
| NPD - N?cleo de Processamento de Dados | Heart of Men!" |
| E-Mail: asmartins at uem.br / shadow at uem.br | !!! Linux User: 52392 !!! |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
"Real Programmers don?t need comments ? the code is obvious."
Drew Weaver
2011-Sep-09 12:05 UTC
[CentOS] CentOS5 with Dell Broadcom iSCSI Offload, does it work ?
Hi,
I could be wrong here but don't you go into the Broadcom NIC configuration
while the server is booting and add the iSCSI target in there and then it should
appear as "Just Another Volume (TM)" to the operating system?
I've never tried it but I assume thats how the 'offloading' works.
thanks,
-Drew
-----Original Message-----
From: centos-bounces at centos.org [mailto:centos-bounces at centos.org] On
Behalf Of Antonio da Silva Martins Junior
Sent: Friday, September 09, 2011 8:01 AM
To: CentOS mailing list
Subject: [CentOS] CentOS5 with Dell Broadcom iSCSI Offload, does it work ?
Hi all,
After finding multiples answers to this question via google, but without
making it work on my servers. Has anybody iSCSI Offload working on a Dell
Server with Broadcom NICs ?
My environment: I'm running CentOS 5.6 CR, on a Dell PowerEdge R710 with
Broadcom Corporation NetXtreme II BCM5709 conecting to an EMC CX4-120 SAN,
via 2x Cisco 2960G-24TC-L switches. It's working without the iSCSI offload.
Thanks in advance,
Antonio.
--
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Antonio S. Martins Jr. - Support Analyst | "Only The Shadow Knows |
| Universidade Estadual de Maring? - Brasil| what evil lurks in the |
| NPD - N?cleo de Processamento de Dados | Heart of Men!" |
| E-Mail: asmartins at uem.br / shadow at uem.br | !!! Linux User: 52392 !!! |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
"Real Programmers don?t need comments ? the code is obvious."
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Antonio da Silva Martins Junior
2011-Sep-09 19:30 UTC
[CentOS] CentOS5 with Dell Broadcom iSCSI Offload, does it work ?
----- "Steve Walsh" <steve at nerdvana.net.au> escreveu:> De: "Steve Walsh" <steve at nerdvana.net.au> > Para: centos at centos.org > Enviadas: Sexta-feira, 9 de Setembro de 2011 9:17:50 (GMT-0300) Auto-Detected > Assunto: Re: [CentOS] CentOS5 with Dell Broadcom iSCSI Offload, does it work ? > > On 09/09/2011 10:05 PM, Drew Weaver wrote: > > Hi, > > > > I could be wrong here but don't you go into the Broadcom NIC > > configuration while the server is booting and add the iSCSI target in > > there and then it should appear as "Just Another Volume (TM)" to the > > operating system? > > > > I've never tried it but I assume thats how the 'offloading' works. > > close, but not. TCP Offloading (obviously) offloads the TCP protocol > processing from the server CPU onto the server adapter. This preserves > valuable CPU cycles for applications processing and improves overall > server performance and network efficiency, as the heavy lifting for > iSCSI is done on the card, by the card. > > <snip> > > After finding multiples answers to this question via google, but > > without making it work on my servers. Has anybody iSCSI Offload > > working on a Dell Server with Broadcom NICs ? > > Depending on how the Broadcom is in the server (ie - Physical Card vs > onboard mezzanine card) depends on if you enable it in BIOS, or switch > into the firmware when prompted at boot time to enable it.Hi, Well... I looked into the NICs config to make sure it's on. On BIOS I can see the 4 onboard NICs. On these I can chage from "no boot" / PXE / iSCSI boot. And the BIOS "detect" that this NICs are TOE & ISOE "capable". I had PXE on the first one and "no boot" on the other 3. From the NICs firmware menu I can see all the 8 NICs (including the 4 onboard), I can change the same options, no option to enable/disable iSCSI Offload, only iSCSI boot. I'm trying the instructions from: - http://www.open-iscsi.org/docs/README - http://docs.redhat.com/docs/en-US/Red_Hat_Enterprise_Linux/5/pdf/Online_Storage_Reconfiguration_Guide/Red_Hat_Enterprise_Linux-5-Online_Storage_Reconfiguration_Guide-en-US.pdf - http://webpages.marshall.edu/~wolfe21/papers/rhel5-iscsi-HOWTO.pdf All of these say almost the same, and I can configure open-iscsi to access the EMC SAN using the two broadcom NICs using dm-multipath. But when I tryed to use the second MAC on the NIC (to activate iSCSI Offload) then I can't connect on the SAN. I can discovery it using the second MAC, but can't connect. Using "default" iface, it will conect using eth1 or eth2: [root at vHst-153-NEAD03 ~]# iscsiadm -m discoverydb -t st -p 10.252.1.1:3260 -I default --discover -P 1 Target: iqn.1992-04.com.emc:cx.ckm00091500140.a2 Portal: 10.252.1.1:3260,1 Iface Name: default Target: iqn.1992-04.com.emc:cx.ckm00091500140.b2 Portal: 10.252.1.2:3260,2 Iface Name: default Target: iqn.1992-04.com.emc:cx.ckm00091500140.a3 Portal: 10.252.2.1:3260,3 Iface Name: default Target: iqn.1992-04.com.emc:cx.ckm00091500140.b3 Portal: 10.252.2.2:3260,4 Iface Name: default [root at vHst-153-NEAD03 ~]# iscsiadm -m node -I default -lLogging in to [iface: default, target: iqn.1992-04.com.emc:cx.ckm00091500140.a3, portal: 10.252.2.1,3260] Logging in to [iface: default, target: iqn.1992-04.com.emc:cx.ckm00091500140.b2, portal: 10.252.1.2,3260] Logging in to [iface: default, target: iqn.1992-04.com.emc:cx.ckm00091500140.b3, portal: 10.252.2.2,3260] Logging in to [iface: default, target: iqn.1992-04.com.emc:cx.ckm00091500140.a2, portal: 10.252.1.1,3260] Login to [iface: default, target: iqn.1992-04.com.emc:cx.ckm00091500140.a3, portal: 10.252.2.1,3260] successful. Login to [iface: default, target: iqn.1992-04.com.emc:cx.ckm00091500140.b2, portal: 10.252.1.2,3260] successful. Login to [iface: default, target: iqn.1992-04.com.emc:cx.ckm00091500140.b3, portal: 10.252.2.2,3260] successful. Login to [iface: default, target: iqn.1992-04.com.emc:cx.ckm00091500140.a2, portal: 10.252.1.1,3260] successful. [root at vHst-153-NEAD03 ~]# iscsiadm -m session tcp: [5] 10.252.2.1:3260,3 iqn.1992-04.com.emc:cx.ckm00091500140.a3 tcp: [6] 10.252.1.2:3260,2 iqn.1992-04.com.emc:cx.ckm00091500140.b2 tcp: [7] 10.252.2.2:3260,4 iqn.1992-04.com.emc:cx.ckm00091500140.b3 tcp: [8] 10.252.1.1:3260,1 iqn.1992-04.com.emc:cx.ckm00091500140.a2 [root at vHst-153-NEAD03 ~]# iscsiadm -m session -P 1 Target: iqn.1992-04.com.emc:cx.ckm00091500140.a3 Current Portal: 10.252.2.1:3260,3 Persistent Portal: 10.252.2.1:3260,3 ********** Interface: ********** Iface Name: default Iface Transport: tcp Iface Initiatorname: iqn.1994-05.com.redhat:vHst-153-NEAD03 Iface IPaddress: 10.252.2.153 Iface HWaddress: <empty> Iface Netdev: <empty> SID: 5 iSCSI Connection State: LOGGED IN iSCSI Session State: LOGGED_IN Internal iscsid Session State: NO CHANGE <snip> But, if I try the same with the eth1 offload, I get: [root at vHst-153-NEAD03 ~]# ifconfig eth1 eth1 Link encap:Ethernet Endere?o de HW BC:30:5B:FD:F7:E7 inet end.: 10.252.1.153 Bcast:10.252.1.255 Masc:255.255.255.0 endere?o inet6: fe80::be30:5bff:fefd:f7e7/64 Escopo:Link UP BROADCASTRUNNING MULTICAST MTU:9000 M?trica:1 RX packets:735 errors:0 dropped:0 overruns:0 frame:0 TX packets:8 errors:0 dropped:0 overruns:0 carrier:0 colis?es:0 txqueuelen:1000 RX bytes:47040 (45.9 KiB) TX bytes:620 (620.0 b) IRQ:26 Mem?ria:d2000000-d2012800 [root at vHst-153-NEAD03 ~]# iscsiadm -m iface default tcp,<empty>,<empty>,<empty>,<empty> iser iser,<empty>,<empty>,<empty>,<empty> bnx2i.bc:30:5b:fd:f7:e8 bnx2i,bc:30:5b:fd:f7:e8,10.252.1.53,<empty>,<empty> bnx2i.bc:30:5b:fd:f7:ea bnx2i,bc:30:5b:fd:f7:ea,10.252.2.53,<empty>,<empty> [root at vHst-153-NEAD03 ~]# iscsiadm -m iface -I bnx2i.bc:30:5b:fd:f7:e8 # BEGIN RECORD 2.0-872 iface.iscsi_ifacename = bnx2i.bc:30:5b:fd:f7:e8 iface.net_ifacename = <empty> iface.ipaddress = 10.252.1.53 iface.hwaddress = bc:30:5b:fd:f7:e8 iface.transport_name = bnx2i iface.initiatorname = <empty> # END RECORD [root at vHst-153-NEAD03 ~]# iscsiadm -m discoverydb -t st -p 10.252.1.1:3260 -I bnx2i.bc:30:5b:fd:f7:e8 --discover -P 1 Target: iqn.1992-04.com.emc:cx.ckm00091500140.a2 Portal: 10.252.1.1:3260,1 Iface Name: bnx2i.bc:30:5b:fd:f7:e8 Target: iqn.1992-04.com.emc:cx.ckm00091500140.b2 Portal: 10.252.1.2:3260,2 Iface Name: bnx2i.bc:30:5b:fd:f7:e8 Target: iqn.1992-04.com.emc:cx.ckm00091500140.a3 Portal: 10.252.2.1:3260,3 Iface Name: bnx2i.bc:30:5b:fd:f7:e8 Target: iqn.1992-04.com.emc:cx.ckm00091500140.b3 Portal: 10.252.2.2:3260,4 Iface Name: bnx2i.bc:30:5b:fd:f7:e8 [root at vHst-153-NEAD03 ~]# iscsiadm -m node -I bnx2i.bc:30:5b:fd:f7:e8 -l Logging in to [iface: bnx2i.bc:30:5b:fd:f7:e8, target: iqn.1992-04.com.emc:cx.ckm00091500140.a3, portal: 10.252.2.1,3260] Logging in to [iface: bnx2i.bc:30:5b:fd:f7:e8, target: iqn.1992-04.com.emc:cx.ckm00091500140.b2, portal: 10.252.1.2,3260] Logging in to [iface: bnx2i.bc:30:5b:fd:f7:e8, target: iqn.1992-04.com.emc:cx.ckm00091500140.b3, portal: 10.252.2.2,3260] Logging in to [iface: bnx2i.bc:30:5b:fd:f7:e8, target: iqn.1992-04.com.emc:cx.ckm00091500140.a2, portal: 10.252.1.1,3260] iscsiadm: Could not login to [iface: bnx2i.bc:30:5b:fd:f7:e8, target: iqn.1992-04.com.emc:cx.ckm00091500140.a3, portal: 10.252.2.1,3260]. iscsiadm: initiator reported error (8 - connection timed out) iscsiadm: Could not login to [iface: bnx2i.bc:30:5b:fd:f7:e8, target: iqn.1992-04.com.emc:cx.ckm00091500140.b2, portal: 10.252.1.2,3260]. iscsiadm: initiator reported error (8 - connection timed out) iscsiadm: Could not login to [iface: bnx2i.bc:30:5b:fd:f7:e8, target: iqn.1992-04.com.emc:cx.ckm00091500140.b3, portal: 10.252.2.2,3260]. iscsiadm: initiator reported error (8 - connection timed out) iscsiadm: Could not login to [iface: bnx2i.bc:30:5b:fd:f7:e8, target: iqn.1992-04.com.emc:cx.ckm00091500140.a2, portal: 10.252.1.1,3260]. iscsiadm: initiator reported error (8 - connection timed out) iscsiadm: Could not log into all portals Well, has anybody make this to work ? What I'm missing ? Thanks in advance, Antonio. -- +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | Antonio S. Martins Jr. - Support Analyst | "Only The Shadow Knows | | Universidade Estadual de Maring? - Brasil| what evil lurks in the | | NPD - N?cleo de Processamento de Dados | Heart of Men!" | | E-Mail: asmartins at uem.br / shadow at uem.br | !!! Linux User: 52392 !!! | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ "Real Programmers don?t need comments ? the code is obvious."
Alexander Dalloz
2011-Sep-09 19:38 UTC
[CentOS] CentOS5 with Dell Broadcom iSCSI Offload, does it work ?
Am 09.09.2011 14:00, schrieb Antonio da Silva Martins Junior:> Hi all, > > After finding multiples answers to this question via google, but without > making it work on my servers. Has anybody iSCSI Offload working on a Dell > Server with Broadcom NICs ? > > My environment: I'm running CentOS 5.6 CR, on a Dell PowerEdge R710 with > Broadcom Corporation NetXtreme II BCM5709 conecting to an EMC CX4-120 SAN, > via 2x Cisco 2960G-24TC-L switches. It's working without the iSCSI offload. > > Thanks in advance, > > Antonio.http://www.dell.com/us/enterprise/p/broadcom-netxtremeii-5709-iscsi/pd.aspx quote "No Linux support for TOE" Alexander
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