oh and IIRC the P4000 series (former LeftHand Networks boxes) have 'odd' behaviour with multipathing
On 11 October 2011 08:36, Seth Tunstall <[email protected]> wrote: > Hi, > > I'm running a similar configuration (HP/Serverengines UNAs) and ran > into similar problems. The only configuration I could get to work even > sometimes was using mainline kernel 3.0.0 and compiled iscsi userland, > whatever the latest version was ~3 months ago. > > HP have told me that you're not supposed to be able to connect a > HP/Serverengines NIC to an iscsi target unless you have: > > - A FlexFabric Switch > - The appropriate FlexFabric license > > Which sounds to me like filthy lies, since iSCSI is just plain tcp. > There could be some autodetection faff that the NICs do, but I doubt > it. > > I ended up using the tcp transport, as the performance impact for what > i'm running didn't seem to be too noticeable (Xen VMs, NFS roots) > > Seth > > On 22 September 2011 06:02, coec <[email protected]> wrote: >> Hi all >> >> I'm using RHEL 6.1 (fully patched, 2.6.32-131.12.1.el6.x86_64 with >> iscsi-initiator-utils-6.2.0.872-21.el6.x86_64) on HP BL460c G7 blades >> talking to a P4500 14.4TB Virt SAN (two clustered P4500 boxes). >> >> As the blade has two FlexHBA (iSCSI) interfaces I want to do >> multipathing. Is the following valid? (Spefically, should both ifaces >> have the same iqn?) >> --- >> iscsiadm -m iface >> default tcp,<empty>,<empty>,<empty>,<empty> >> iser iser,<empty>,<empty>,<empty>,<empty> >> be2iscsi.00:17:a4:77:10:01 be2iscsi, >> 00:17:a4:77:10:01,<empty>,<empty>,iqn.2011-08.scada.benvir2p >> be2iscsi.00:17:a4:77:10:00 be2iscsi, >> 00:17:a4:77:10:00,<empty>,<empty>,iqn.2011-08.scada.benvir2p >> --- >> >> In this setup, I can only login to the LUN on iface be2iscsi. >> 00:17:a4:77:10:01. When I attempt to login with the other iface I get >> 'iscsiadm: No records found'. >> >> I have other servers where I'm only using a single FlexHBA (be2iscsi) >> and they are having their own troubles. For example, dmesg is >> reporting lots of: >> --- >> scsi: host 0 channel 0 id 0 lun4194304 has a LUN larger than allowed >> by the host adapter >> device-mapper: table: 253:7: multipath: error getting device >> device-mapper: ioctl: error adding target to table >> device-mapper: table: 253:7: multipath: error getting device >> device-mapper: ioctl: error adding target to table >> scsi: host 0 channel 0 id 0 lun4194304 has a LUN larger than allowed >> by the host adapter >> device-mapper: table: 253:7: multipath: error getting device >> device-mapper: ioctl: error adding target to table >> device-mapper: table: 253:7: multipath: error getting device >> device-mapper: ioctl: error adding target to table >> --- >> >> cat /proc/scsi/scsi >> Attached devices: >> Host: scsi0 Channel: 00 Id: 00 Lun: 00 >> Vendor: HP Model: P410i Rev: 3.66 >> Type: RAID ANSI SCSI revision: 05 >> Host: scsi0 Channel: 00 Id: 00 Lun: 01 >> Vendor: HP Model: LOGICAL VOLUME Rev: 3.66 >> Type: Direct-Access ANSI SCSI revision: 05 >> Host: scsi1 Channel: 00 Id: 00 Lun: 00 >> Vendor: LEFTHAND Model: iSCSIDisk Rev: 9000 >> Type: Direct-Access ANSI SCSI revision: 05 >> >> cat /proc/partitions >> major minor #blocks name >> >> 8 0 586029016 sda >> 8 1 512000 sda1 >> 8 2 585515008 sda2 >> 253 0 2097152 dm-0 >> 253 1 50331648 dm-1 >> 253 2 4194304 dm-2 >> 253 3 4194304 dm-3 >> 253 4 4194304 dm-4 >> 253 5 4194304 dm-5 >> 8 16 1073741824 sdb >> 253 6 1073741824 dm-6 >> >> This is all standard data iSCSI, I'm not attempting to do iSCSI >> booting at all. >> >> I've been trying to make this work for a while now and I'm wondering >> if I should just use software iSCSI? >> >> Thanks >> >> CC >> >> -- >> You received this message because you are subscribed to the Google Groups >> "open-iscsi" group. >> To post to this group, send email to [email protected]. >> To unsubscribe from this group, send email to >> [email protected]. >> For more options, visit this group at >> http://groups.google.com/group/open-iscsi?hl=en. >> >> > -- You received this message because you are subscribed to the Google Groups "open-iscsi" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/open-iscsi?hl=en.
