Re: loader.conf and rootdev option for memory disk
Date: Sat, 19 Nov 2022 21:31:42 UTC
Look at the file /boot/defaults/loader.conf: … ### Initial memory disk settings ########################### #mdroot_load="YES" # The "mdroot" prefix is arbitrary. #mdroot_type="md_image" # Create md(4) disk at boot. #mdroot_name="/boot/root.img" # Path to a file containing the image. #rootdev="ufs:/dev/md0" # Set the root filesystem to md(4) device. … — Mira > On 19 Nov 2022, at 21:58, Tomoaki AOKI <junchoon@dec.sakura.ne.jp> wrote: > > IIUC, rootdev should be set in loader.env, if needed. > `man 5 loader.conf` has nothing about rootdev variable. > > (It's undocumented, IIRC.) > > > On Sat, 19 Nov 2022 19:57:47 +0100 > Chlasták Miroslav <mira@chlastak.cz <mailto:mira@chlastak.cz>> wrote: > >> I have my device working for now - but the question is - Is the documentation and example for “rootdev” right or not? >> >> — >> Mira >> >>> On 18 Nov 2022, at 21:13, Warner Losh <imp@bsdimp.com <mailto:imp@bsdimp.com>> wrote: >>> >>> >>> >>> On Fri, Nov 18, 2022 at 12:57 PM Chlasták Miroslav <mira@chlastak.cz <mailto:mira@chlastak.cz> <mailto:mira@chlastak.cz <mailto:mira@chlastak.cz>>> wrote: >>> Hi all, >>> >>> In the /boot/defaults/loader.conf are these options for memory disk settings: >>> >>> #mdroot_load="YES" # The "mdroot" prefix is arbitrary. >>> #mdroot_type="md_image" # Create md(4) disk at boot. >>> #mdroot_name="/boot/root.img" # Path to a file containing the image. >>> #rootdev="ufs:/dev/md0" # Set the root filesystem to md(4) device. >>> >>> >>> But - is this example for rootdev option still right? Because “ufs:/dev/md0” works fine on freebsd 12.1, but on freebsd 12.3 this does not work and generates error message: >>> >>> Can’t determine root device >>> >>> >>> When I use this option with value “/dev/md0” or “md0” (even with this option commented out), so the machine boots correctly without any error. >>> >>> I think you want vfs.root.mountfrom= instead of rootdev= here. >>> >>> Warner >>> >>> — >>> Mira >> > > > -- > 青木 知明 [Tomoaki AOKI] <junchoon@dec.sakura.ne.jp <mailto:junchoon@dec.sakura.ne.jp>>