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Status Future consideration
Workspace z/VM
Created by Guest
Created on May 20, 2022

RELATED IDEAS

Implement the existing, but not yet supported, TLStimeout parameter for IUCV IOCTL socket calls

When using IUCV IOCTL calls, in particular SIOCSECCLIENT and SIOCSECSERVER to secure an established socket connection, I have seen cases where the call sits indefinitely with no response or failure. Because the documented TLStimeout has not been implemented yet, the call hangs indefinitely waiting for completion or a failure ... there is no other documented method to cleanly "cancel" the call to secure the socket. Because these calls may go "off platform", it seems various anomalies in the network can result in this situation where the IOCTL call neither completes, nor fails, and thus just hangs indefinitely.
Idea priority Medium
  • Guest
    Reply
    |     Dec 1, 2022

    This option looks critical in some situation, otherwise EXECs and following processes hung. We experienced this situation recently and are not happy with missing TLS timeout option.

  • Guest
    Reply
    |     May 26, 2022

    Seems necessary

  • Guest
    Reply
    |     May 24, 2022

    This has caused a serious problem for us. If the socket never terminates, the logon process will hang until VMSECURE is recycled. We have about 30 z/VM lpars and cycling vmsecure on each one is not exactly graceful way to circumvent this issue. This also includes production systems. It's a problem that really does need to be addressed.

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