Ready to improve kdump on AArch64
My weeks have been quite busy lately. In spite of that, I found some time to set up the environment for improving kdump for a future SLE15 on AArch64:
I admit my desk looks a bit messy, indeed… Anyway, the picture shows a Raspberry Pi3, attached to a Silicon Labs CP2104 (kindly sent to me by the manufacturer for a past project of mine), both attached to a USB port. The Raspberry is also plugged into a local router for easier access. I don’t need any keyboard and/or display, as they tend to be less useful for kdump debugging than a serial console.
So, let’s fire up minicom
… and it works!
No time to do more at the moment, so let’s switch it off again. Unfortunately, the Raspberry does not have any hardware power off, but I can turn it off using uhubctl (oh, not yet packaged for openSUSE? yay, sounds like a challenge, so see my OBS submit request). The only remaining trouble is that Lenovo chose a bit weird numbering for the USB ports on their docking station:
Left to right, they are numbered 3, 1, 2 and 4. The Raspberry is plugged into port 1, and the docking station hub’s physical USB location is 3-3, so I can switch off the Raspberry like this:
hananiah:~ # uhubctl -l 3-3 -p 1 -a off Current status for hub 3-3, vendor 0424:2514, 4 ports Port 1: 0100 power Sent power off request New status for hub 3-3, vendor 0424:2514, 4 ports Port 1: 0000 off
The red LED turned off, and that’s all I have time for right now. Stay tuned for an update about my progress on the actual kdump improvements.
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