Board Linux shall have a way to be soft reseted (reboot)
#26
Comments
reboot)
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My current pattern for soft-resets is this: with contexlib.ExitStack() as cx:
b = cx.enter_context(tbot.acquire_board(lh))
lnx = cx.enter_context(tbot.acquire_linux(b))
...
ch = lnx.open_channel("systemctl", "reboot")
# Stuff the channel back into the board-machine ...
b.ch = ch
# Reinitialize the linux-machine which will wait for the reboot to
# reach the login-prompt again.
lnx = cx.enter_context(tbot.acquire_linux(b))
...I know, this isn't the pretties way to do it and I was also thinking that maybe it would be useful to have a way for doing soft-resets with a single method call. But I'm not really sure how to model this without making a lot of assumptions about the user, so we'll have to see ... For now, this explicit re-initialization is the pattern I would suggest you use. |
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I wasn't able to get the example to work. It would hang once Linux would shutdown, but wouldn't power cycle. re_poweroff = re.compile(b'reboot: Power down\s{0,10}')
shutdown_cmd = ("sudo", "systemctl", "poweroff")
with tbot.ctx.request(tbot.role.BoardLinux) as serial:
with serial.run(*shutdown_cmd) as shutdown:
shutdown.read_until_prompt(prompt=re_poweroff, timeout=60)
shutdown._pre_terminate()
shutdown._proxy_alive = FalseI would prefer not to use private attributes, but I couldn't get it to work cleanly otherwise. I tried running Any advice on achieving something similar without accessing private attributes? |
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I am not 100% sure what you are trying to do... You want to first power-off the system and then have tbot power-cycle it, is that correct? In that case, try something like this: with tbot.ctx.request(tbot.role.BoardLinux, exclusive=True) as lnx:
# Do something before reboot
lnx.exec0("uname", "-a")
# Power-down the system
ch = lnx.open_channel("systemctl", "poweroff")
ev = tbot.log.EventIO(["powerdown"], "System powering down...")
with ch.with_stream(ev):
ev.prefix = " <> "
ch.expect(["reboot: Power down", "reboot: System halted"])
with tbot.ctx.request(tbot.role.BoardLinux, reset=True) as lnx:
# Do something after reboot
lnx.exec0("uname", "-a")FWIW, this issue was originally about performing a soft-reset without power-cycling the system. For that, things work a bit differently... |
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Thanks! Using For my use case, either a reboot or a shutdown will work. I just need the OS to shutdown cleanly and not just power cycle. The issue I had with the reboot is it just hung. Perhaps it also needs |
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Turns out I do need to reboot. I tried to implement what you have in #26 (comment). It works if I'm just running additional commands on the serial console within that same context block, but, if I call other code after this that requests the |
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I would also need to do a reboot without a power cylcle in between. How can this be done cleanly? |
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It would be great to trigger a soft reset with
rebootfor some testcases.Unfortunately
exec0 rebootwill not terminate because the prompt will not be shown again.The
softresetfunction could handle the relogin as well.The text was updated successfully, but these errors were encountered: