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iSCSIprt event ID 10: Login request failed

I'm trying to connect a Windows System (current Win10 or Server2019 LTS) to a Linux tgt iSCSI-target. The target-server works fine with Linux initiators, but with a Windows initiator I always get an error in the GUI saying "The target name is not found or is marked as hidden from login".
I tried no authentication, initiator-authentication, CHAP and mutual CHAP, to no avail...
Any ideas what's wrong here?

windows-server-storage
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MarcusBuettemeyer answered

Problem solved: Ubuntu does not conform to RFC 3722 "String Profile for iSCSI Names" which states "In addition, any upper-case characters input via a user interface MUST be mapped to their lower-case equivalents."
My host is named UV1, so I set up an IQN like "iqn....:UV1-test" but the Windows initiator connects to "iqn....:uvi1-test" which is met with a "Target not found" ...

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XiaoweiHe-MSFT answered

Hi,

Please try to configure the Local adapter, Initiator IP and Target portal IP of the ISCSI target, then try to connect again, check if it could work:

Click the ISCSI target in the list, click connect, then click advanced, configure the settings:

34188-image.png

Thanks for your time!
Best Regards,
Anne


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MarcusBuettemeyer answered XiaoweiHe-MSFT commented

Thank you for the fast reply! I tried that, as well as combinations of header / data digest, but still the same error. I also had a look at the event log and I get the following error: "Source iSCSIPrt / ID 10 / Login request failed".
It's really strange, my Windows initiators connect happily to Windows, FreeNAS and AsusTor targets. My only issue is with Windows initiators and Ubuntu / tgt as the target??

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Hi,

My only issue is with Windows initiators and Ubuntu / tgt as the target??

If so, it seems we need to involve the Ubuntu storage vendor to look into the issue together.

It may be the ISCSI client sends login request, however, the ISCSI server may not respond properly.

Thanks for your time!
Best Regards,

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