Re: Starting a subhurd

[Samuel Thibault]

Hello,

Ravin Perera, le jeu. 02 nov. 2023 19:58:40 +0530, a ecrit:
> The documentation seems to be a bit old and outdated,

I don't think it (https://www.gnu.org/software/hurd/hurd/subhurd.html)
is old/outdated, as far as I can tell it is providing the proper
information.

> are there any relevant resources I can use?

That page is what is most relevant, by providing examples.

> Up until now, I've mounted a hurd img using -hdb to my qemu
> system and modified the fstab in the image file as follows
> ([1]https://imgbox.com/CxspjJ7L). I didn't edit the boot script
> because I couldn't figure out what to edit.

There is nothing to edit.

> Then I made the hd1s2 partition readonly  (mounted to /mnt using
> `settrans -a /mnt /hurd/ext2fs /dev/hd1s2` and then used fsysopts
> to make readonly) and tried booting the subhurd using `boot -D /mnt
> --boot-script=/mnt/boot/servers.boot /dev/hd1s2`

Why using --boot-script? The wiki page does not talk about it. On my
system things go alright without that option. And thus -D is not useful,
and mounting the image neither. Apparently your issue comes from the "-T
typed" part of that bootscript, which doesn't match the "pseudo-root"
parameter, which is not a typed string.

So either fix servers.boot to use -T device, or much better, just let
boot use its default script which is all fine:

boot /dev/hd1s2


That being said, you will probably get a crash from mach-defpager (most
probably because there is already a default pager), which takes the
subhurd down. You can comment that out from /etc/hurd/runsystem.sysv

That is rather a bug to fix, not a documentation issues.

Samuel