We have that question from our network people, because we will need to connect to a separate physical LAN for one customer, and we want the migration as seamless as possible. So we will have duplicates of connections, of which both are redundant as well. This will obviously expose us for the risk of network routing loops, and this is prohibited with 'spanning tree' functionality, normally supported by switches or routers.
Any know if a z/VM vswitch support this or if it is perhaps not needed ? Anyone having experinces of this ? We run z/VM 6.1 and SLES11.1 and RHEL6 BR /Tore ________________________________________________ Tore Agblad System programmer, Volvo IT certified IT Architect Volvo Information Technology Infrastructure Mainframe Design & Development, Linux servers Dept 4253 DA1S SE-405 08, Gothenburg Sweden Telephone: +46-31-3233569 E-mail: [email protected] http://www.volvo.com/volvoit/global/en-gb/ -----Original Message----- From: Linux on 390 Port [mailto:[email protected]] On Behalf Of Alan Altmark Sent: den 10 maj 2012 16:03 To: [email protected] Subject: Re: SLES 11 SP1 msg: kernel: scsi: host 0 channel 0 id 0 lun2 has a LUN larger than allowed by the host adapter On Wednesday, 05/09/2012 at 09:39 EDT, Raymond Higgs/Poughkeepsie/IBM@IBMUS wrote: > > 11:12:11 scsi: host 0 channel 0 id 0 lun2 has a LUN larger than > > allowed by the host adapter > There shouldn't be any limitations until 2 TB. I don't think linux is > complaining about the size of the lun. I think linux is complaining about > the lun number. It is saying that it will only configure luns 0x0000 and > 0x0001. Nominally, that response means that the LUN number of one of the LUNs returned on REPORT LUNS is larger than the value supported by the adapter, which zfcp_scsi_adapter_register() sets to 0xFFFFFFFF. Those are (supposed to be) unsigned ints, so the implication is, as you suggested, that something changed this value via sysfs, assuming it is exported. >From drivers/scsi/scsi_scan.c: 1466 if (lun > sdev->host->max_lun) { 1467 printk(KERN_WARNING "scsi: %s lun%d has a LUN larger" 1468 " than allowed by the host adapter\n", 1469 devname, lun); Alan Altmark Senior Managing z/VM and Linux Consultant IBM System Lab Services and Training ibm.com/systems/services/labservices office: 607.429.3323 mobile; 607.321.7556 [email protected] IBM Endicott ---------------------------------------------------------------------- For LINUX-390 subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390 ---------------------------------------------------------------------- For more information on Linux on System z, visit http://wiki.linuxvm.org/ ---------------------------------------------------------------------- For LINUX-390 subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390 ---------------------------------------------------------------------- For more information on Linux on System z, visit http://wiki.linuxvm.org/
