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Thread: ESX 4.1 loses iSCSI connection after reboot

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  1. #1
    Join Date
    Aug 2013
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    Question ESX 4.1 loses iSCSI connection after reboot

    Hi,
    I'm running ESX 4.1 and planning to move the iSCSI storage from a single Windows Storage Server to two Open-E DSS V6 16TB Storage System which should run than Failover.
    Right now I have the strange problem, that after a ESX reboot for example the connection to the open-e iSCSI LUN can't be restored nor will any rebooted ESX find any LUN from the Open-E System.
    Quite disappointing.
    Only Solution is to reset the iSCSI Connections manually with the Web GUI of the Open-E System.
    This couldn't be a solution for an HA setup.

    How to fix this?

  2. #2
    Join Date
    Oct 2010
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    Default

    be sure to assign static paths to the targets for the HBA, only pointing to the virtual IP(s).
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  3. #3
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    Aug 2013
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    Hi that's all done.
    After I changed from File IO to Block IO this problem only appears with with Volumes greater than 1TB.
    I also get a huge amount of cmnd_abord 1143 errors.
    What could be the reason?


    Thx
    MAFRI

  4. #4

    Default

    Review this link for those errors.

    http://kb.open-e.com/Im-getting-cmd_...system_90.html
    All the best,

    Todd Maxwell


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  5. #5
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    Those steps I've already tried...
    Another strange behavior is that an ESX Host crashed today due to my failure, and this host was creating a VM at an iSCSI target of the Open-E DSS V6. This target was totally lost - ESX will only find it with 0,00B size now.
    So what is the advice to create a stable and good running Open-E DSS V6 iSCSI Failover Cluster for VmWare ESX 4.1 ?

    Thanks

  6. #6

    Default

    You might want to check out VMware site about missing LUNs from the ESX side and how to get it back.

    http://kb.vmware.com/selfservice/mic...0463&stateId=1 0 17600580
    All the best,

    Todd Maxwell


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