On Thu, Aug 23, 2018 at 11:05:40AM -0500, Todd T. Fries wrote: > 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 >
I know personally of at least 3 people using vmm(4)/vmd(8) with gigantisch ramdisks containing all sorts of goo. None of them use any disks. -ml
