Hi, it’s not like that, maybe I wasn’t clear. Let me try to explain:
- you can boot from disk (-d) - you can boot an OpenBSD kernel or use a custom BIOS (-b) - you can boot from CDROM (-r) vmd/vmctl checks if at least one option is available. If you specify neither of these options, you can potentially boot from network or via telekinesis. But vmd doesn’t support network boot (only with a PXE BIOS payload that conflicts with sgabios) and I cannot judge your telekinesis skills to make a VM boot without any kernel. Reyk > Am 23.08.2018 um 18:05 schrieb Todd T. Fries <[email protected]>: > > This makes me wonder. Does it make sense to support booting a kernel without > disks? Some people have heard of the phrase 'diskless' ;-) > > Penned by Reyk Floeter on 20180822 13:35.23, we have: > | Hi, > | > | vmctl doesn't allow to boot VMs with only a CDROM. I see no reason > | for it and vmd already allows CDROM-only. > | > | OK? > | > | Via https://twitter.com/wizardishungry/status/1032327323125727232 > | "Jon Williams @wizardishungry > | @reykfloeter Could you consider allowing booting ISO-only vms in 6.4? > | This is helpful for running container hosts (e.g. boot2docker)." > | > | Reyk > | > | Index: usr.sbin/vmctl/vmctl.c > | =================================================================== > | RCS file: /cvs/src/usr.sbin/vmctl/vmctl.c,v > | retrieving revision 1.54 > | diff -u -p -u -p -r1.54 vmctl.c > | --- usr.sbin/vmctl/vmctl.c 12 Jul 2018 12:04:49 -0000 1.54 > | +++ usr.sbin/vmctl/vmctl.c 22 Aug 2018 18:29:44 -0000 > | @@ -98,8 +98,8 @@ vm_start(uint32_t start_id, const char * > | errx(1, "too many disks"); > | else if (ndisks == 0) > | warnx("starting without disks"); > | - if (kernel == NULL && ndisks == 0) > | - errx(1, "no kernel or disk specified"); > | + if (kernel == NULL && ndisks == 0 && !iso) > | + errx(1, "no kernel or disk/cdrom specified"); > | if (nnics == -1) > | nnics = 0; > | if (nnics > VMM_MAX_NICS_PER_VM) > > -- > Todd T. Fries . http://todd.fries.net/pgp.txt . @unix2mars . github:toddfries
