Hi João, On 18/09/2025 09:58, João Pedro Malhado wrote:
I read the other thread, but I'm unsure about the hypothesis that these errors are related to the low amount of RAM. On my Toshiba netbook where rumpdisk is failing with similar errors to what you are seeing, I indeed also have 1Gb of RAM. But on my HP laptop where rumpdisk works fine I have 512Mb. If this is memory related, there must be something weird going on with RAM segmentation. I'm attaching gnumach's dmesg in case anyone is able to make sense of it.
It is true also that Hurd/Rumpdisk boots succesfully on a 512MB Qemu virtual machine. The reason it works is that total memory is so low that there is no HIGHMEM memory segment at all. All memory except the small DMA total is allocated to the DIRECTMAP segment and there is sufficient in that one segment to support the initial boot and to permit sufficient spare to permit pageout to operate successfully. Your log shows only DMA and HIGHMEM segments only as well so it should operate as per my Qemu test.
All the best, Mike.