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<BODY>All,<br>
Does anyone have any experience or know any gotchas when connecting a node to a fibre switch (that drives a tape SAN)? Here's the hardware and situation :<br>
<br>
gateway node is an IBM x340 (dual Intel PIII, 2Gb RAM, etc. fairly generic high-end server-class machine) w/ a QLogic 2200 series Fibre Channel adapter, attached to an IBM SAN Fibre Channel Switch 2109 Model S16 (actually a number of them interconnected, ea. 16 port). There are a number of IBM Magstar 3590E1 model tape drives (high-end geophysical use) attached to the SAN switch. Some of these tape drives are connected directly to the switch (fibre from tape drive to switch), others are UltraWide Differential SCSI going to a switch that converts that to fibre, then to the main fibre switch.<br>
<br>
We are running Redhat Linux 7.1, kernel 2.4.3 (redhat updates version, w/ the extra patches/tweaks and drivers they include), all patches and updates that applicable installed.<br>
<br>
So far, I have connected an individual tape drive directly to the node, everything came up fine, could read/write, run all mt commands, etc. just fine (performance was actually a good deal better than w/ the SCSI connections I've previously used). Then I plugged the node directly into the fibre switch and booted it. The kernel boots, sees devices, sees the Qlogic adapter, sees the 29 devices and their addresses attached to it, and then just sits there. The messages are :<br>
<br>
( at boot time - w/out the link to the fibre switch plugged in - from /var/log/messages )<br>
...<br>
qla2x00: detect() found an HBA<br>
qla2x00: VID=1077 DID=2200 SSVID=1077 SSDID=2<br>
(scsi): Found a QLA2200 @ bus 1, device 0x5, irq 20, iobase 0x4d00<br>
scsi(2): Configure NVRAM parameters...<br>
scsi(2): Verifying loaded RISC code...<br>
scsi(2): Verifying chip...<br>
scsi(2): Waiting for LIP to complete...<br>
scsi-qla0-adapter-node=200000e08b034ec1;<br>
scsi-qla0-adapter-port=210000e08b034ec1;<br>
scsi2 : QLogic QLA2200 PCI to Fibre Channel Host Adapter: bus 1 device 5 irq 20<br>
Firmware version: 2.01.27, Driver version 4.28<br>
...<br>
<br>
( same - from /var/log/dmesg )<br>
<br>
identical to above<br>
<br>
( when link is plugged in - from /var/log/messages )<br>
...<br>
scsi(2): LIP reset occurred<br>
scsi(2): LOOP UP detected<br>
scsi(2): Waiting for LIP to complete...<br>
scsi2: Topology - (F_Port), Host Loop address 0xffff<br>
qla2100_update_host: Host table Full.scsi2: Topology - (F_Port), Host Loop address 0xffff<br>
scsi2: Topology - (F_Port), Host Loop address 0xffff<br>
...<br>
<br>
( when link is plugged in - dmesg output )<br>
<br>
same as above<br>
<br>
( from /proc/scsi/qla2x00/2 )<br>
<br>
QLogic PCI to Fibre Channel Host Adapter for ISP2100/ISP2200/ISP2300:<br>
Firmware version: 2.01.27, Driver version 4.28<br>
Request Queue = 0x1fb38000, Response Queue = 0x1fb30000<br>
Request Queue count= 256, Response Queue count= 256<br>
Number of pending commands = 0x0<br>
Number of queued commands = 0x0<br>
Number of free request entries = 251<br>
Number of mailbox timeouts = 0<br>
Number of ISP aborts = 0<br>
Number of loop resyncs = 0<br>
Number of retries for empty slots = 0<br>
Number of reqs in retry_q = 0<br>
Number of reqs in done_q = 0<br>
<br>
SCSI Device Information:<br>
scsi-qla0-adapter-node=200000e08b034ec1;<br>
scsi-qla0-adapter-port=210000e08b034ec1;<br>
scsi-qla0-target-0=5005076300004507;<br>
scsi-qla0-target-1=5005076300003ef6;<br>
scsi-qla0-target-2=5005076300003497;<br>
scsi-qla0-target-3=5005076300003c45;<br>
scsi-qla0-target-4=5005076300004029;<br>
scsi-qla0-target-5=5005076300002408;<br>
scsi-qla0-target-6=5005076300003290;<br>
scsi-qla0-target-7=5005076300002864;<br>
scsi-qla0-target-8=50050763000035be;<br>
scsi-qla0-target-9=1000006045161784;<br>
scsi-qla0-target-10=100000604516234d;<br>
scsi-qla0-target-11=5005076300003acd;<br>
scsi-qla0-target-12=500507630000273a;<br>
scsi-qla0-target-13=5005076300003338;<br>
scsi-qla0-target-14=5005076300003295;<br>
scsi-qla0-target-15=10000060451617d5;<br>
scsi-qla0-target-16=10000060451620fe;<br>
scsi-qla0-target-17=500507630000406c;<br>
scsi-qla0-target-18=50050763000035d2;<br>
scsi-qla0-target-19=50050763000041ac;<br>
scsi-qla0-target-20=50050763000035d3;<br>
scsi-qla0-target-21=1000006045161f40;<br>
scsi-qla0-target-22=1000006045161784;<br>
scsi-qla0-target-23=500507630000404f;<br>
scsi-qla0-target-24=500507630000331b;<br>
scsi-qla0-target-25=5005076300004038;<br>
scsi-qla0-target-26=5005076300003812;<br>
scsi-qla0-target-27=500502e020000159;<br>
scsi-qla0-target-28=500502e0200000c3;<br>
scsi-qla0-target-29=500502e02000015f;<br>
scsi-qla0-target-30=500502e020000171;<br>
scsi-qla0-target-31=50050763000030e3;<br>
<br>
SCSI LUN Information:<br>
(Id:Lun)<br>
<br>
>From what I have found looking at the kernel source, is that the Qlogic driver is an external driver provided by Qlogic and incorporated into the "redhat" version of the Linux kernel. The version I have is current w/ the latest off their website. It's hard to find any information regarding linux and these devices, since most people don't have this equipment. Does anyone here have any experience or suggestions. Thanks in advance!<br>
Regards,<br>
Derek R.<br>
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<pre>--
Junior Linux Geek
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713-781-4000 x2267 (office)
"Linux users, fanatical. No way...
HEY! Get that MCSE up on the altar,
Tux must be appeased!"</pre></TD>
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