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Thread: Are PCIe cadrs (NIC) really hot-plugable?

  1. #1
    Join Date
    Mar 2008
    Location
    Ljubljana
    Posts
    41

    Default Are PCIe cadrs (NIC) really hot-plugable?

    Years ago, I've heard something about PCIe standard.

    Cards should support "native hot-plug” functionality. So, is it true?

    MB = INTEL SRV XEON S5520HCR
    NIC= INTEL E10G41AT2
    OS = DSS V6 Version: 6.0up90.8101.5845 64bit

  2. #2
    Join Date
    Oct 2010
    Location
    GA
    Posts
    935

    Default

    Adding another NIC will require a reboot in DSS V6.

  3. #3
    Join Date
    Mar 2008
    Location
    Ljubljana
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    Default

    Adding NICs is one problem, but replacing them is even more complicated.
    Now, I know!

    Some information of old unused card (eth4) is still somewere in setup data and new card is recognised as new one (eth5), doesn't matter, it is the same type. Reset network settings is required and setup all NICs again.

    So native hot-plugable PCIe practically doesn't work!

  4. #4
    Join Date
    Oct 2007
    Location
    Toronto, Canada
    Posts
    108

    Default

    Quote Originally Posted by Toni Bizjak
    Years ago, I've heard something about PCIe standard.

    Cards should support "native hot-plug” functionality. So, is it true?
    Wikipedia says yes, so it must be true!

    I think you have confused:

    1 - physical PCIe hot-plug features with the ability for an OS to recognize new PCIe added via hot-plug.

    2 - the ability of an OS to swap an existing device binding to the new hardware.


    "Hot-plug" does not mean "auto-replace" or "no boot required for swap".

  5. #5
    Join Date
    Mar 2008
    Location
    Ljubljana
    Posts
    41

    Default

    This is why, I posed this question in the OS forum.
    I've managed all by "classic" procedure (when others sweet slept).

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