On Mon, Apr 11, 2016 at 9:14 PM, Nathan Coulson <nathan at bravenet.com> wrote: > Hello > > We were attempting to use scsi-target-utils, hosted on a xen dom0 vm using > localhost, and running into some problems. I was not able to reproduce this > on a centos 7.2 server using the default kernel. Have you tried booting the Virt SIG kernel natively and seeing if you can reproduce the problem at all? Thanks, -George > > > (From dmesg) > Apr 4 11:18:42 funk kernel: [ 596.511204] connection2:0: detected conn > error (1022) > Apr 4 11:18:42 funk kernel: connection2:0: ping timeout of 5 secs expired, > recv timeout 5, last rx 4295253788, last ping 4295258790, now 4295263808 > Apr 4 11:18:42 funk kernel: connection2:0: detected conn error (1022) > Apr 4 11:18:42 funk iscsid: Kernel reported iSCSI connection 2:0 error > (1022 - Invalid or unknown error code) state (3) > Apr 4 11:18:44 funk iscsid: connection2:0 is operational after recovery (1 > attempts) > > Repeated a few times, until eventually > > > Apr 4 11:19:44 funk kernel: Result: hostbyte=DID_TRANSPORT_DISRUPTED > driverbyte=DRIVER_OK > Apr 4 11:19:44 funk kernel: sd 7:0:0:1: [sdd] CDB: > Apr 4 11:19:44 funk kernel: Write(10): 2a 00 01 df c7 e8 00 00 18 00 > Apr 4 11:19:44 funk kernel: blk_update_request: I/O error, dev sdd, sector > 31442920 > Apr 4 11:19:44 funk kernel: [ 658.127596] sd 7:0:0:1: [sdd] > Apr 4 11:19:44 funk kernel: [ 658.127688] Result: > hostbyte=DID_TRANSPORT_DISRUPTED driverbyte=DRIVER_OK > Apr 4 11:19:44 funk kernel: [ 658.127761] sd 7:0:0:1: [sdd] CDB: > Apr 4 11:19:44 funk kernel: [ 658.127826] Write(10): 2a 00 01 df c7 e8 00 > 00 18 00 > Apr 4 11:19:44 funk kernel: [ 658.127927] blk_update_request: I/O error, > dev sdd, sector 31442920 > Apr 4 11:19:44 funk kernel: [ 658.128040] sd 7:0:0:1: [sdd] > Apr 4 11:19:44 funk kernel: sd 7:0:0:1: [sdd] > Apr 4 11:19:44 funk kernel: [ 658.128105] Result: > hostbyte=DID_TRANSPORT_DISRUPTED driverbyte=DRIVER_OK > Apr 4 11:19:44 funk kernel: [ 658.128177] sd 7:0:0:1: [sdd] CDB: > Apr 4 11:19:44 funk kernel: [ 658.128241] Write(10): 2a 00 00 00 08 00 00 > 00 18 00 > Apr 4 11:19:44 funk kernel: [ 658.128339] blk_update_request: I/O error, > dev sdd, sector 2048 > Apr 4 11:19:44 funk kernel: Result: hostbyte=DID_TRANSPORT_DISRUPTED > driverbyte=DRIVER_OK > Apr 4 11:19:44 funk kernel: sd 7:0:0:1: [sdd] CDB: > Apr 4 11:19:44 funk kernel: Write(10): 2a 00 00 00 08 00 00 00 18 00 > Apr 4 11:19:44 funk kernel: blk_update_request: I/O error, dev sdd, sector > 2048 > > > (Test Setup) > scsi-target-utils installed via yum, default config > /etc/tgt/conf.d/xenguests.conf > <target iqn.2016-02.com.bravenet:test> > backing-store //mnt/vmdisk/test # vm image > </target> > > systemctl tgtd restart > > iscsiadm -m discovery -t sendtargets -p localhost > > iscsiadm -m node -T iqn.2016-02.com.bravenet:test -l > > > add it to lvm (pvcreate, vgcreate), let's call it /dev/vmdisk.vg/test.lv > > and then use libvirt to attempt to install an os on /dev/vmdisk.vg/test.lv > (using anaconda) > > > > > Around the time it tries to create the disk label, is when the conn errors > start, until eventually it gives up trying to create the disk label. > > > > We tested a similar setup on a centos 7.2 host we use kvm based > virtualmachine hosting on (default 3.10 kernel), and it worked fine. It may > be similar to what was reported on > https://bugzilla.redhat.com/show_bug.cgi?id=1245990, but I never saw a > resolution on what they discovered (other then a reference to comment18 > which does not appear to exist). > > Testing over the network appears to also work as well (where another machine > connects to scsi-target-utils on the funk server above. > > > > > > Longterm Purpose of the above setup, was to get direct access to a > filesystem image hosted on a gluster setup, using bs-type glfs on > scsi-target-utils. > > -- > Nathan Coulson > www.bravenet.com > nathan at bravenet.com > _______________________________________________ > CentOS-virt mailing list > CentOS-virt at centos.org > https://lists.centos.org/mailman/listinfo/centos-virt