NXOS Save_Config Appears To Wait For Completion

i have two threads connecting to the same box. Netmiko appears to be waiting till save_config() completes with proper response before moving down my code. I need my 2nd thread to execute WHILE a save is occuring. I have 1 min 8 secs to do this.

Im using threading + semaphore. so Im locking and unlocking threads.

Automation : Im trying to perform a config change in a 2nd session while saving in the 1st. I need the change to occur inside the window while its saving. I cannot get the 2nd session to do it.

BAD RESULT
Tue Aug 17 15:12:22 2021:type=update:id=10.24.63.196@pts/5:user=admin:cmd=Performing configuration copy.
Tue Aug 17 15:12:25 2021:type=start:id=vsh.bin.3792:user=admin:cmd=
Tue Aug 17 15:13:29 2021:type=update:id=10.24.63.196@pts/5:user=admin:cmd=copy running-config startup-config (SUCCESS)

GOOD RESULT
Tue Aug 17 15:05:23 2021:type=update:id=10.24.63.196@pts/0:user=admin:cmd=Performing configuration copy.
Tue Aug 17 15:05:26 2021:type=start:id=vsh.bin.18707:user=admin:cmd=
Tue Aug 17 15:05:28 2021:type=update:id=10.24.63.196@pts/3:user=admin:cmd=configure terminal ; no route-map CUSTOM_ROUTE_MAP
-OUT permit 5148 (SUCCESS)
Tue Aug 17 15:06:31 2021:type=update:id=10.24.63.196@pts/0:user=admin:cmd=copy running-config startup-config (SUCCESS)
hostname3#

THIS IS THE SAVE_CONFIG FUNCTION FOR NXOS

    def save_config(
        self,
        cmd="copy running-config startup-config",
        confirm=False,
        confirm_response="",
    ):
        self.enable()

        if confirm:
            output = self.send_command_timing(
                command_string=cmd, strip_prompt=False, strip_command=False
            )
            if confirm_response:
                output += self.send_command_timing(
                    confirm_response, strip_prompt=False, strip_command=False
                )
            else:
                # Send enter by default
                output += self.send_command_timing(
                    self.RETURN, strip_prompt=False, strip_command=False
                )
        else:
            # NX-OS is very slow on save_config ensure it waits long enough.
            # FIX: this is a hack as delay_factor will be set to .1 via fast_cli=True in
            # send_command so increase max_loops.
            output = self.send_command(
                command_string=cmd,
                strip_prompt=False,
                strip_command=False,
                max_loops=5000,
            )
        return output

[snub-fighter]

write_channel() worked. Thank you

On Tue, Aug 17, 2021 at 10:21 AM Kirk Byers @.***> wrote:

You could just use `write_channel(“copy run start\n”).

Note, any subsequent read_channel() call on this SSH session will still retrieve whatever that SSH session is doing (i.e. it won’t do anything else on that given SSH session until the copy run start is complete).

Note, it is possible/likely that NX-OS does not allow config changes while copy run start is underway (i.e. there is a good chance even multiple SSH sessions does not allow this at the NX-OS level).

Kirk

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[ktbyers]

You could just use write_channel("copy running-config startup-config\n")

Note, any subsequent read_channel() call on this SSH session will still retrieve whatever that SSH session is doing (i.e. it won’t do anything else on that given SSH session until the copy run start is complete).

Note, it is possible/likely that NX-OS does not allow config changes while copy run start is underway (i.e. there is a good chance even multiple SSH sessions does not allow this at the NX-OS level).

Kirk