I'm seeing an odd behaviour from sendtargets discovery from open-iscsi to tgt. We're running open-iscsi 2.0-871 against a remote linux tgt 0.9.7. discovery.sendtargets.iscsi.MaxRecvDataSegmentLength is set to 262144 to avoid the target list being prematurely truncated. When I run iscsiadm -m discovery -t sendtargets against the remote target, sometimes it is returning warning messages and aborting halfway through the target list: # iscsiadm -m discovery -t sendtargets -p 0a2bc790-aab9-45bd-ad58-6fd7d9b2aae7.storage.elastichosts.com | wc -l iscsiadm: Cannot resolve host 172.16.226.12. getaddrinfo error: [Servname not supported for ai_socktype] iscsiadm: cannot resolve 172.16.226.12 iscsiadm: failed to add default portal, ignoring target iqn.2008-03.com.elastichosts:ad0b32d2-c220-4be5-a609-5ea063f0a4cc:daaa6df9-0d5d-4d31-b5d7-e3799c9efd4f iscsiadm: failed to add target record iscsiadm: This command will remove the record [iface: default, target: iqn.2008-03.com.elastichosts:ad0b32d2-c220-4be5-a609-5ea063f0a4cc:32367157-899b-4e75-ad4f-2c23d828a92a, portal: 172.16.226.12,3260], but a session is using it. Logout session then rerun command to remove record. iscsiadm: This command will remove the record [iface: default, target: iqn.2008-03.com.elastichosts:ad0b32d2-c220-4be5-a609-5ea063f0a4cc:d79f2d28-8bd0-43d3-b44f-41e863afddda, portal: 172.16.226.12,3260], but a session is using it. Logout session then rerun command to remove record. 55 whereas sometimes it works fine: # iscsiadm -m discovery -t sendtargets -p 0a2bc790-aab9-45bd-ad58-6fd7d9b2aae7.storage.elastichosts.com | wc -l 113 Which of these it does appears to vary from second to second: I can get a couple of failures then a few successes then some failures again, which is very strange! After a while, I started to get completely invalid data: iscsiadm: unexpected SendTargets data: a iscsiadm: unexpected SendTargets data: iscsiadm: unexpected SendTargets data: iscsiadm: unexpected SendTargets data: iscsiadm: unexpected SendTargets data:o}� [...] Once it gets into this state, it doesn't start working again! Killing and restarting tgtd, then rexporting all the targets fixes the problem for five or ten discoveries, but then after a while the problem recurs. I don't see this from another tgtd which is only exporting 89 targets. Best wishes, Chris. -- To unsubscribe from this list: send the line "unsubscribe stgt" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
