Hello Community, When updating a bootloader slot of type boot-mbr-switch the function g_open() in open_slot_device() from update_handler.c fails:
> 90% Copying image to bootloader.0 failed. > [...] > LastError: Installation error: Failed updating slot bootloader.0: Opening > output device /dev/mmcblk0 failed: Device or resource busy In my opinion this is due to the O_EXCL flag in g_open(), because for type boot-mbr-switch the code tries to open the full device (/dev/mmcblk0) instead of an inactive partition (/dev/mmcblk0p1). I assume the device is busy because at leat the rootfs partition of the currently running system is mounted. For an associated system.conf see the documentation example 7.6.2. I suggest that the O_EXCL flag should not be used on slot type boot-mbr-switch, because in this case it is legitimate to open a busy device for writing (compared to a "normal" slot update). Some testing confirms the functionality. Is this a bug or am I missing something here? What is your opinion on this? If confirmed a bug I have a simple patch prepared. Thanks and Regards, Martin Hollingsworth _______________________________________________ RAUC mailing list
