<html><head><style type='text/css'>p { margin: 0; }</style></head><body><div style='font-family: Arial; font-size: 12pt; color: #000000'>Can you give us some details on your setup - like which target software you're using, backing store, if you're using authentication....<br><br>Just for reference, here are the commands I used for sharing an LVM volume on host fsx to a client (CentOS to CentOS)<br><br>On fsx: <br> /etc/init.d/tgtd start<br> tgtadm --lld iscsi --op new --mode target --tid 4 -T iqn.201212.net.testing:fsx.lv.iscsi.client # Create target 4<br> tgtadm --lld iscsi --op bind --mode target --tid 4 -I ALL # Open to all IPs<br> tgtadm --lld iscsi --op new --mode logicalunit --tid 4 --lun 1 --backing-store /dev/mapper/vg01-iscsi # Assign LV<br> tgtadm --lld iscsi --op show --mode target<br><br>On client:<br>/etc/init.d/iscsid<br>iscsiadm --mode discovery --type sendtargets --portal fsx<br>iscsiadm --mode node --target $target_name --portal fsx --login<br>iscsiadm --mode node<br><br>Regards,<br>Scott<br><hr id="zwchr"><b>From: </b>"Mike Williams" <knightperson@zuzax.com><br><b>To: </b>"Mailing List for LUG in greater Grand Rapids, MI area." <grlug@grlug.org><br><b>Sent: </b>Tuesday, December 27, 2011 6:17:08 PM<br><b>Subject: </b>Re: [GRLUG] booting from iscsi target<br><br>It's supposed to be possible with PXE, but I haven't gotten that far. So <br>far, I can't even get an iSCSI initiator to connect to and mount an <br>iscsi target even when there are fully functional operating systems <br>involved. I intend to keep playing with it because it's neat stuff.<br><br>On 12/27/2011 07:54 AM, Kevin McCarthy wrote:<br>> I'm the one who was talking about booting Windows over iSCSI. Sorry <br>> for the delayed response, I haven't been checking the mailing list as <br>> much as I probably should for the last couple of weeks.<br>><br>> Anyway, the only way I've made this work is to use an iSCSI option ROM <br>> for an Intel gigabit NIC. All you need to do is set the iSCSI target <br>> (including LUN) in the NIC's setup screen (Ctrl-A at boot, I think) <br>> and then through the magic of iBFT the Windows installer will present <br>> the iSCSI target in the list of installable drives and happily install <br>> directly to it. Then, you select the NIC as the primary boot device in <br>> the system BIOS and it boots just fine with no local disks.<br>><br>> I'm not sure it is possible to do this without at least iBFT support <br>> on the NIC, so you will need some dedicated hardware. But, Intel NICs <br>> are ~$20 and you can download the iSCSI ROM for them here:<br>><br>> http://downloadcenter.intel.com/default.aspx<br>><br>> It's trivial to make a FreeDOS boot USB drive, and run BootUtil from <br>> there to update the ROM on the NIC. At least it went smoothly for me.<br>><br>> You can also check into iPXE if you don't have an Intel card (or even <br>> if you do) but I had better luck with the official Intel ROM on my card.<br>><br>> Good luck with this.<br>><br>> -Kevin<br>><br>> On Sat, Dec 24, 2011 at 3:54 PM, Mike Williams <knightperson@zuzax.com <br>> <mailto:knightperson@zuzax.com>> wrote:<br>><br>> I've played around with it, but haven't gotten anything working.<br>> The iscsi initiator (Windows 7) will recognize and connect to an<br>> iscsi target (sometimes Ubuntu, sometimes Windows 2008), but I<br>> can't seem to actually attach to a LUN. I'm not interested in<br>> performance or dedicated hardware at this point; I just want to<br>> establish that you can run a diskless workstation over iscsi.<br>><br>><br>> On 12/23/2011 10:19 AM, scott.tanner@comcast.net<br>> <mailto:scott.tanner@comcast.net> wrote:<br>><br>> Hey Mike,<br>> Did you ever get the information you were looking for on this?<br>><br>> I have a little experience with an iscsi arrays, and lab'd up<br>> a test environment using the Linux Target framework (tgt) on<br>> one (beefy) server and the iscsi-initiator software on a few<br>> clients. My setup was a little different as it's CentOS/Xen<br>> based, but most of the design principles would be the same.<br>><br>> Added warning - not all ISCSI systems are created equal!<br>> Sadly my test environment GREATLY outperformed the Infortrend<br>> ISCSI array we purchased, averaging around %40 better<br>> performance for read/write block I/O (bonnie++). After a<br>> growth spurt in our QA department which doubled the VM count,<br>> the ISCSI system was demoted to bulk storage and a new<br>> SAS-based SAN was just purchased. I've been told by some<br>> storage specialists that many providers tweak the ISCSI<br>> controllers for better throughput, apparently Infortrend does not.<br>><br>><br>> Regards,<br>> Scott<br>><br>> ------------------------------------------------------------------------<br>> *From: *"Mike Williams" <knightperson@zuzax.com<br>> <mailto:knightperson@zuzax.com>><br>> *To: *"Grand Rapids Linux Users Group" <grlug@grlug.org<br>> <mailto:grlug@grlug.org>><br>> *Sent: *Tuesday, December 20, 2011 2:48:02 AM<br>> *Subject: *[GRLUG] booting from iscsi target<br>><br>><br>> I remember somebody on the list or at The Warehouse was doing<br>> this.<br>> Whoever you are, can I pick your brain on duplicating that<br>> feat? I'm<br>> want to get a Virtualbox Windows 7 guest to boot, first from<br>> the host<br>> Ubuntu 11.10 but eventually from a guest Windows 2008, to<br>> prove to my<br>> employer that Windows 7 will run happily disklessly.<br>><br>> I'm trying to learn about five new things at once here, and my<br>> brain is<br>> overflowing!<br>><br>> Thanks.<br>><br></div><br />--
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