![]() For the old releases, nothing will be printed but a 1 is printed when you run echo $? after that. You can check your version by running such a command /usr/bin/raspi-config nonint get_overlay_now when OverlayFS is not enabled. But it changed recently to print the result directly without setting the exit code. Sadly, there are two version of the script, based on the version of raspi-config.įor early releases of PiOS, raspi-config command line returns nothing but set the exit code. In another word, when disabling both OverlayFS and Boot partition ReadOnly, the PiOS need to be reboot twice.įor easing the process for disabling both OverlayFS and change the boot partition back to writable, I write a script to set the boot partition writable when OverlayFS is not enabled currently. But when enabling OverlayFS, raspi-config has an option to set the boot partition to read-only at the same time before rebooting. While disabling OverlayFS through raspi-config, there is no way to set the boot partition back to read-write before OverlayFS disabled, which requires a reboot. The problem is due to the read-only of the main partition, the mounting mode (readonly or read-write) cannot be changed when OverlayFS enabled. Boot partition can be set to read-only by raspi-config or editing fstab config file. The protection of OverlayFS doesn’t cover the boot partition (the first one). When enabled, the main partition (the second one) will be locked. PiOS shipped with Overlay FileSystem support. Disable Boot ReadOnly with OverlayFS on PiOS I don’t know the reason but leave this as a notice to the ones who want to buy a new NAS from QNAP. But actually, all kinds of SSD/HDD cannot have a good sleep in new models at all. ![]() By searching the reason why sleep mode is missing, only one article saying that SED SSD Storage Pool does not support the S3 Sleep function. The official documentation says nothing about this change. To make sure it is, I fired a ticket to the help desk, the answer is the same - sleep function is no more supported. I contacted some other users, who use other new models as well. Several months ago, I brought a new one, TS-873A, found there is no sleep function left. Because there is no one access them overnight, it really help to reduce the noise and not bring much jobs, like entering password for unlocking, other than press the power button to resume. I have a, maybe not good, habit of putting them into sleep mode every night. I have several generations of NAS from QNAP. Is there any approach to cancel the running Read method of FileStream without exiting application? apt upgrade brings apache2 activated on my server And finally, the Thread.Abort is obsoleted and no use any more. Setting read timeout is not supported in FileStream. Cancel the CancellationToken cannot break the ReadAsync either. I also tried to use BinaryReader - “Stream was not readable” reported. And there is no way to break the waiting. If there is no data available currently but not reaching the end of file, it will block and wait. The Read method is designed to read at least one byte. The sad thing is, there is no way to stop the FileStream.Read method except quit the app. For make it easy, I post the code in GitHub. Using the method Read() form the instance of FileStream, all key events can be processed one by one. To read from the device in Linux, FileStream need to be created on the device file. Reading the event from keyboard device file /dev/input/eventX is a good choice. All devices are presented as files in Linux. Because the program is running background, hosted in systemd, there is no way to get the entered text from console. Recently, I need to read the data from a code scanner, which is recognized as a keyboard, in the dotnet program development of Linux.
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