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Genkernel: ERROR: Binary /sbin/mdassemble could not be found
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Bounteous
n00b
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Joined: 09 Feb 2018
Posts: 9
Location: Spain

PostPosted: Fri Nov 09, 2018 11:03 pm    Post subject: Genkernel: ERROR: Binary /sbin/mdassemble could not be found Reply with quote

Code:
genkernel --udev --lvm --mdadm --luks initramfs


Code:
* Gentoo Linux Genkernel; Version 68
* Running with options: --udev --lvm --mdadm --luks initramfs

* Using genkernel.conf from /etc/genkernel.conf
* Sourcing arch-specific config.sh from /usr/share/genkernel/arch/x86_64/config.sh ..
* Sourcing arch-specific modules_load from /usr/share/genkernel/arch/x86_64/modules_load ..

* Linux Kernel 4.14.78-gentoo-v0.0.1 for x86_64...
* .. with config file /usr/share/genkernel/arch/x86_64/kernel-config
* busybox: >> Using cache
* initramfs: >> Initializing...
*         >> Appending base_layout cpio data...
*         >> Appending udev cpio data...
cp: cannot stat '/etc/modprobe.d/blacklist.conf': No such file or directory
* cannot copy /etc/modprobe.d/blacklist.conf from udev
*         >> Appending auxilary cpio data...
*         >> Copying keymaps
*         >> Appending busybox cpio data...
*         >> Appending lvm cpio data...
* LVM: Adding support (copying binaries from system)...
*         >> Appending mdadm cpio data...
* ERROR: Binary /sbin/mdassemble could not be found



Downgrade version from sys-fs/mdadm-4.1 to 3.4 fixed it.
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fedeliallalinea
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Joined: 08 Mar 2003
Posts: 21328
Location: here

PostPosted: Sat Nov 10, 2018 12:41 pm    Post subject: Reply with quote

There is also an open bug https://bugs.gentoo.org/669792
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russK
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Joined: 27 Jun 2006
Posts: 618

PostPosted: Tue Nov 27, 2018 3:14 am    Post subject: Reply with quote

I can confirm Comment #15 to the bugreport, you can now upgrade genkernel-next to sys-kernel/genkernel-next-69 to get past this problem.

https://bugs.gentoo.org/669792#c15

Cheers
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TiccTech
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Joined: 13 Jun 2004
Posts: 41
Location: Oregon, US

PostPosted: Fri Nov 30, 2018 2:58 am    Post subject: Reply with quote

EDIT: I figured out what my problem was. Details in https://forums.gentoo.org/viewtopic-t-1090040.html.

I tried sys-kernel/genkernel-next-69 with sys-fs/mdadm-4.1. However, doing a
Code:
genkernel --mdadm initramfs
produced an initramfs that panicked on boot because it could not find the root partition (which is RAID1). I downgraded to sys-kernel/genkernel-next-68 and sys-fs/mdadm-3.4, did the same procedure, and can successfully boot.

So something's not quite right somewhere in the newer versions. :(

-TiccTech


Last edited by TiccTech on Sat Dec 01, 2018 1:12 am; edited 1 time in total
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Maitreya
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Joined: 11 Jan 2006
Posts: 407

PostPosted: Fri Nov 30, 2018 2:33 pm    Post subject: Reply with quote

I think I had the same with btrfs and not finding udev in initramfs at boot.
For me a genkernel cache clear was enough to fix it.
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Arrta
Tux's lil' helper
Tux's lil' helper


Joined: 09 Nov 2003
Posts: 105

PostPosted: Fri Mar 08, 2019 9:26 pm    Post subject: Reply with quote

4 month old post, but I just ran in to this myself today.
genkernel-next nolonger has a 69 build, and I was getting the "mdassemble could not be found" error.
Back reved mdadm to 3.4 to resolve.
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