Topic
  • 4 replies
  • Latest Post - ‏2010-09-17T15:20:50Z by friesland
SystemAdmin
SystemAdmin
4779 Posts

Pinned topic Linux vs LNXCLVMWARE host type

‏2010-09-17T10:44:24Z |
Hello,

Is there any difference between Linux and LNXCLVMWARE host type apart from AVT/ADT activation?

Best regards.
Updated on 2010-09-17T15:20:50Z at 2010-09-17T15:20:50Z by friesland
  • SystemAdmin
    SystemAdmin
    4779 Posts

    Re: Linux vs LNXCLVMWARE host type

    ‏2010-09-17T11:25:25Z  
    The difference IS the ADT status.
    Automatic drive transfer is enabled for Linux.

    HOST TYPE ADT STATUS ASSOCIATED INDEX

    LNXCLVMWARE Disabled 13
    Linux Enabled 5

    Regards, Anthony Vandewerdt

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  • friesland
    friesland
    64 Posts

    Re: Linux vs LNXCLVMWARE host type

    ‏2010-09-17T12:04:21Z  
    When looking at the NVSram settings:

    NVSRAM Region 14 Region Id = (242) Host Type Dependent Data

    0000: 4c4e 5800 0000 0000 0000 0000 0000 0000 LNX.............
    0010: 017f 0000 0100 0001 0001 0000 0000 0000 ................
    0020: 0001 0100 0100 0008 0100 0000 0000 0000 ................
    0030: 0000 0000 0000 0000 0000 0000 0000 0000 ................

    NVSRAM Region 22 Region Id = (242) Host Type Dependent Data

    0000: 4c4e 5843 4c56 4d57 4152 4500 0000 0000 LNXCLVMWARE.....
    0010: 017f 0000 0100 0001 0001 0001 0000 0000 ................
    0020: 0001 0100 0000 0008 0100 0000 0000 0000 ................
    0030: 0000 0000 0000 0000 0000 0000 0000 0000 ................

    The difference is only in byte:

    0x1B Propagate Host Bus Resets (active for LNXCLWMWARE)
    0x24 Auto LUN Transfer Enabled (active for LNX)
  • SystemAdmin
    SystemAdmin
    4779 Posts

    Re: Linux vs LNXCLVMWARE host type

    ‏2010-09-17T14:16:52Z  
    Hi,

    Thank you for your replies.
    In the IBM documentation, it's mentioned that when we use the RDAC multipath driver we have to disable ADT in the Linux host type using the ADT disable script.
    I wonder why they don't recommend the use of LNXCLVMWARE host type instead of Linux host type because I think it's more simple as we have to reset the storage subsytem controllers when we apply the mentioned script.

    Best regards.
  • friesland
    friesland
    64 Posts

    Re: Linux vs LNXCLVMWARE host type

    ‏2010-09-17T15:20:50Z  
    Hi,

    Thank you for your replies.
    In the IBM documentation, it's mentioned that when we use the RDAC multipath driver we have to disable ADT in the Linux host type using the ADT disable script.
    I wonder why they don't recommend the use of LNXCLVMWARE host type instead of Linux host type because I think it's more simple as we have to reset the storage subsytem controllers when we apply the mentioned script.

    Best regards.
    In the new code 07.60.40, there is NO need anymore the using scripting to enable/disable AVT,
    they added a new Linux hosttype

    From ibm_fw_ds4kfc_07604000_anyos_anycpu.chg

    + Create new host types - MacOS, Onstor, LINUX and VMWARE.
    + Change the name of existing AIX-ADT/AVT, LINUX and LNXCLVMWARE host types
    to AIX (with Veritas DMP), LNXAVT and LNXCLUSTER.