From: ido b. <id...@gm...> - 2011-02-27 07:21:00
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Thank you for your reply Marc, The situation is as you described, but according to FCP spec, the switch, as a fabric, should send a "RSCN", once a logged in port has disappeared from the fabric. (similar to the indication when a port is logged in for the first time - which we do get). Thanks, Ido On Fri, Feb 25, 2011 at 1:21 AM, Marc Smith <mar...@mc...> wrote: > Oh, I think I see what you mean. > > SCST_Target---------Link_A-----------FC_Switch---------Link_B-------Initiator > > > And you are taking out 'Link_B' (removing) -- right? > > So, your SCST_Target HBA never sees a "disconnect" because it never is > disconnected. =) > Its still plugged into the switch so it still has light. Thats how its > supposed to work. > Think of it as like an Ethernet switch. > > Is that what you mean or am I still missing what you're trying to > explain. =) > > On Thu, Feb 24, 2011 at 11:33 AM, ido benda <id...@gm...> wrote: >> Hi Marc, >> >> I think I need to explain my self a bit better: >> I am using a rack mounted blade server, so I can not disconnect the >> cable from the FC switch to the server HBA. >> What I do disconnect, is the cable from the initiator to the FC switch. >> >> I assumed I will get an event in the qla2xxx/qla2x00tgt driver (which I don't). >> >> In any case, the output of the link_state and speed does not change >> when i disconnect the initiator-FC switch cable: >> >> [root@f16 ~]# cat /sys/class/fc_host/host12/device/scsi_host/host12/link_state >> Link Up - F_Port >> [root@f16 ~]# cat /sys/class/fc_host/host12/speed >> 8 Gbit >> >> Ido >> >> On Thu, Feb 24, 2011 at 5:39 PM, Marc Smith <mar...@mc...> wrote: >>> So, when you pull the cable out of the HBA, what do the following look like? >>> /sys/class/fc_host/hostX/device/scsi_host/hostX/link_state >>> /sys/class/fc_host/hostX/speed >>> >>> When I have a link on mine, I see stuff like this: >>> cat /sys/class/fc_host/host3/device/scsi_host/host3/link_state >>> Link Up - Ready >>> Fabric >>> cat /sys/class/fc_host/host3/speed >>> 4 Gbit >>> >>> When the cable is disconnected (eg, no light), I see this: >>> cat /sys/class/fc_host/host3/device/scsi_host/host3/link_state >>> Link Down >>> cat /sys/class/fc_host/host3/speed >>> unknown >>> >>> >>> What do you see? >>> >>> >>> --Marc >>> >>> >>> On Sun, Feb 20, 2011 at 9:23 AM, ido benda <id...@gm...> wrote: >>>> Hi, >>>> >>>> I have started testing scst + qla2xxt on RHEL6 (before i was using >>>> centos 5.5 with qla_isp). >>>> it seems that the qla2xxx driver does not detect a disconnection of >>>> the FC cable. The same behavior was observed with qla_isp (I tested >>>> this with two different FC switches). >>>> >>>> Is this being tested by anyone? could this be a problem with the HBA >>>> firmware/FC switch? >>>> >>>> any insight will be appreciated. >>>> >>>> Ido >>>> >>>> ------------------------------------------------------------------------------ >>>> The ultimate all-in-one performance toolkit: Intel(R) Parallel Studio XE: >>>> Pinpoint memory and threading errors before they happen. >>>> Find and fix more than 250 security defects in the development cycle. >>>> Locate bottlenecks in serial and parallel code that limit performance. >>>> http://p.sf.net/sfu/intel-dev2devfeb >>>> _______________________________________________ >>>> Scst-devel mailing list >>>> Scs...@li... >>>> https://lists.sourceforge.net/lists/listinfo/scst-devel >>>> >>> >> > |