Hi Cedric, I don't know what you need lvm for explicitly, but if it's possible with mdadm, you can work without an initramfs. I do so: <cite /boot/grub/grub.cfg> ... menuentry "CRUX 3.0 v4.0-rc5-131-g7fc377e" { linux /vmlinuz-v4.0-rc5-131-g7fc377e root=/dev/md0 } ... </cite> /boot, on the other hand is still a normal partition. Remember to compile all needed kernel components into the kernel and not as a module! Actually I can't think of a reason why lvm wouldn't work the same way, when all components are compiled into the kernel ... greetings, Erich Am 31.03.2015 um 13:55 schrieb James Trimbee:

Might be worth taking a look at Dracut, too. It isn't in ports but I think is still simpler than rolling your own initramfs the old way.

On 30 March 2015 at 19:52, Thierry Moreau <thierry.moreau@connotech.com <mailto:thierry.moreau@connotech.com>> wrote:

On 03/30/15 20:43, Cédric wrote:

Hello,

I'm new to crux and I would like to test it. Unfortunately, after the installation the system doesn't boot. I use lilo as bootloader and I have installed lvm. There is a partition for /boot (without lvm) and another one with lvm for the other directories.

I have compiled my kernel without initrd. After searching, I think an initrd is necessary with lvm. In "core" or "opt" the utility "mkinitrd" is not available. Is there an alternative to "mkinitrd" to create the initrd ?

Maybe

cd /usr/ports find -name .footprint | xargs grep mkinitrd

will tell you which (contrib?) package provides it.

Ah! Maybe not ...

The Crux wiki entry https://crux.nu/Wiki/__BuildingISO <https://crux.nu/Wiki/BuildingISO> may be a starting point. The Makefile there seems to refer (at the initramfs Makefile target) to

kernel/linux-3.xx.y/usr/gen___init_cpio

which may be a substitute for what you are looking for. This Makefile taught me much more.

Thanks!

Regards,

- Thierry

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Hi, Am 31.03.2015 um 16:06 schrieb James Trimbee:

I wondered about kernel support for LVM, but I've never got it to work without an initramfs; or software RAID for that matter. Without /etc/mdadm.conf (usually handled within the initramfs) I don't know how the Kernel knows to assemble the array - does it just use drive metadata? Yes, it's in some kind of id in the partition table:

Device Boot Start End Sectors Size Id Type /dev/sdd1 2048 10487807 10485760 5G 83 Linux /dev/sdd2 10487808 976773167 966285360 460.8G fd Linux raid autodetect and then the md-superblock knows the rest (i.e., which name the raid has, which type, etc.). ... there's also "8e Linux LVM", so maybe this works, too. Personally I never felt the need for lvm, and probably won't test it in the near future greetings, Erich

Thank you everybody for all your answers!

Might be worth taking a look at Dracut, too. It isn't in ports but I think is still simpler than rolling your own initramfs the old way. 

I could probably use kernel/linux-3.xx.y/user/gen_init_cpio, but I think I'll have a look at the Dracut tool. I think it will be easier. Thank your for providing the Pkgfile! I will boot with the iso, set a network connection and build the tool with your Pkgfile. I hope it will works.

Device Boot Start End Sectors Size Id Type /dev/sdd1 2048 10487807 10485760 5G 83 Linux /dev/sdd2 10487808 976773167 966285360 460.8G fd Linux raid autodetect

and then the md-superblock knows the rest (i.e., which name the raid has, which type, etc.).

... there's also "8e Linux LVM", so maybe this works, too.

I have used "Linux LVM" and it's not enough. Thank you for your link Cezar. I don't remember if I saw that link. As it is said it's not possible without an initrd, but it could work with grub2. As I want to use syslinux, I didn't keep that option. But I will read it carefully one more time to understand the problem better. To answer Erich in the past I didn't used lvm. It happened that I had to reinstall everything, because I had some problem with my partitions size. At the end I decided I don't want anymore to reinstall everything because a partition is too small. So lvm was the solution. Best Regards, Cédric

I should clarify I use lilo but whatever boot manager you use will have some method of appending it, e.g. grub.conf etc. Default dracut is huge, by the way (the package includes all modules it uses), so it should have what ever you need.