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/usr on lvm with debian-sources

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I'm running the debian-sources kernel.  I have put /usr on an lvm partition.  I get the following messages during boot:


Mounting /dev/vg1/usr as /usr:  mount -t ext4 -o noatime,ro /dev/vg1/usr /newroot/usr

mount:  mounting /dev/vg1/usr on /newroot/usr failed:  No such file or directory

!! Unable to mount /dev/vg1/usr for /usr

>> Booting (initramfs)..


and then later:


Setting up the Logical Volume Manager ...

/etc/init.d/device-mapper:  line 65:  uniq: command not found

/etc/init.d/device-mapper:  line 64:  awk: command not found

/etc/init.d/device-mapper:  line 64:  awk: command not found

/etc/init.d/device-mapper:  line 65:  uniq: command not found


Awk and uniq are in /usr/bin, so /usr must not be mounted yet.  Then:


/dev/mapper/vg1-usr:  clean, 145293/327680 files, 645590/1310720 blocks


And /usr ends up mounted by the time the system boots.


I'm guessing initramfs is my answer.  Debian-sources provides an initramfs file, but I'm not sure if it supports lvm and I'm not sure what to specify in grub.  I tried adding 'lvm' to the boot parameters, but that didn't change anything as far as I could tell.

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Linux funtoo 3.19.3-1~exp1 #1 SMP Mon May 18 05:17:08 2015 x86_64 Intel® Core2 Duo CPU E4500 @ 2.20GHz GenuineIntel GNU/Linux

The pre-compiled kernel has the LVM compile options enabled, I checked mine here: /usr/src/linux-debian-sources-3.19.3/.config

I use this guide:


Starting here:

Build initramfs (genkernel):

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Thanks for the pointer, cardinal.


Here's what I've done:


'emerge genkernel'

'genkernel --lvm initramfs'

Edited /etc/boot.conf:

    added 'dolvm' to parms, like this:    params += dolvm real_root=auto rootfstype=auto

    updated initrd line, like this:             initrd initramfs-genkernel-x86-3.19.3-1~exp1



I checked /boot/grub/grub.cfg and it looks good to me.  Unfortunately I'm getting the same errors as before.  My system boots, but it mounts /usr late in the boot process.


I've tried several variations of the params line, including hard-coding real_root and rootfstype instead of setting them to 'auto'.  Nothing has worked so far.  Am I doing something wrong or is this a bug?

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