Assuming the s in 409295092s means 512 byte sectors, then that's something like 195 gigabytes and 127778488s is around 60 gigabytes. I don't know why xorriso would think that the ISO needs that much space...
Nothing relevant changed in subiquity on 2021-02-01 that I can see, so I think it must be the HWE kernel. Do you still have logs from a successful run before that? Maybe -report_el_torito as_mkisofs is going crazy.
Assuming the s in 409295092s means 512 byte sectors, then that's something like 195 gigabytes and 127778488s is around 60 gigabytes. I don't know why xorriso would think that the ISO needs that much space...
Nothing relevant changed in subiquity on 2021-02-01 that I can see, so I think it must be the HWE kernel. Do you still have logs from a successful run before that? Maybe -report_el_torito as_mkisofs is going crazy.