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Questions tagged [dracut]

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6 views

Dracut skips over new custom dracut module during initramfs build

Ok so I have a system running a RHEL 6 server and due to hardware restraints RHEL 6 is the newest I can use. Second I am trying to create a live network bootable initramfs for a pxe operation. In ...
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9 views

What boot or script parameters are different in a live iso verses a normal image(specificall redhat based distro's)

Ok so I know the difference between the functionality of live verses a normal iso but I want to know what boot parameters / startup scripts are different that are fed to the initramfs/dracut that make ...
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12 views

How to create a PXE boot that runs totally in the target machines ram using root=live?

Ok so I have created some pxe images using centos 8 and 7 but for the application I am to use pxe for now I need it to run totally in the target machines ram. to do this from research I understand ...
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29 views

Dracut will not create images containing modules not in use by the current system

Ok so dracut is not performing as I believe it should and I cannot find a workaround. I have created several images before but now I am trying to create a live boot initramfs to go along with a custom ...
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12 views

dracut for rhel 6 not creating modules

I have pxe booted and created custom initramfs.img s for centos 7 and 8 but due as part of an older system upgrade that still requires rhel 6 I have been trying to create a dracut initramfs.img . I am ...
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15 views

dracut.conf version of --uefi?

Looking through man dracut.conf I see equivalents to a lot of the command line options from man dracut, but I don't see one that causes it to generate a UEFI executable like --uefi would on the ...
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24 views

Dracut: load just one module from a particular directory, without installing

I need to add a kernel module (example.ko) to initramfs - a particular version that I compile. I don't, however, want to install that version on the computer where it's compiled. I know that I can ...
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0answers
32 views

Dracut systemd service inactive (dead)

I have a debian machine with dracut instead of initramfs and I'm trying to enable a service to start when the system fails to boot. The service gets loaded but status says Active: inactive (dead) I ...
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1answer
107 views

In a systemd initrd, how do I persist a mount into the new root

Background I'm building a custom initrd using dracut. It: mounts an ext4 disk partition to /data retrieves a squashfs image over the network, which it stores in /data mounts the squashfs mounts an ...
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1answer
45 views

dracut: use only specified configuration file

Is it possible to tell dracut do not use configuration files in /etc/dracut.conf.d/ and /usr/lib/dracut/dracut.conf.d during initramfs creating? I move configuration files to temporary directory ...
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166 views

packer - hyperv - centos dracut initqueue timeout errors

facing errors while using packer to build an image with hyperv for centos8 attaching logs at ends its picking the ks.cfg, its getting the ip as well from dhcp, i could see in the rdsosreport.txt as ...
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1answer
30 views

Install own kernel in CentOS. Is that possible?

So I'm having a customized kernel(.deb packages). And like I wanna apply kernel on CentOS. Is this possible? Over the internet found out that it's possible with "dracut tool", but how? Or I ...
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79 views

Unable to disable kernel module

I'm trying to disable kernel module for my motherboard's bluetooth chip: btintel. I've added a blacklist entry to /etc/modprobe.d/blacklist-btintel.conf (I also tried blacklist.conf, this didn't make ...
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1answer
118 views

How to configure lvm from dracut emergency shell?

I am sorry if this is a silly question or someone has already answered it. I am new to linux and encounter a problem with booting into OS (Qubes OS 4.0.1). After some time searching about the problem, ...
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229 views

CentOS-8 - Unsealing LUKS volume with TPM2 module - clevis issue

Im trying to get a LUKS volume unlocked by the TPM-module on a Dell Optiplex 3060. The binding seems to work fine: clevis luks bind -d /dev/nvme0n1p3 tpm2 '{"pcr_ids":"7"}' $ luksmeta show -d /dev/...
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125 views

Linux kernel on ppc64le: vmlinux equivalent in arch/powerpc/boot/

When I run self compiled kernel on ppc64le on QEMU with vmlinux, it works (instructions from https://github.com/linuxppc/wiki/wiki/Booting-with-Qemu): wget -c https://openpower.xyz/job/initramfs/job/...
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2answers
2k views

Kernel Panic - Not syncing : VFS: unable to mount root fs on unknown-block (0,0)

After updating more than ~1000 things my installation of RHEL 2.6.32-220.el6.x86_64. I get the following kernel panic message: Kernel Panic - Not syncing : VFS: unable to mount root fs on unknown-...
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189 views

What does this dracut log output mean? Why is there an infinite loop?

I'm fighting a server with Centos 7 that doesn't start. I've no idea why. I found that I can pass the rd.debug parameter to the kernel and it logs a LOT of dracut initialization messages. 1.6MB in ...
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0answers
357 views

Live USB with custom CentOS image and Veracrypt Partition

Context: I have a USB drive with 2 partitions: the first one is a custom, non-persistent, image of CentOS 7.6 1810 (with GNOME) and the second one is an encrypted data partition. The objective is to ...
2
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1answer
456 views

What is the relationship between dracut and initramfs?

When experiencing a boot failure I see the system drop to a prompt which says dracut. It is my understanding dracut is used to generate an image of initramfs. What I'm confused about is that based on ...
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2answers
5k views

System boots into Dracut mode in CentOS 7

Recently tried booting up my server but i get the following error. It seems that initramfs is not able to generate and i tried to boot into rescue mode and found that fstab file was empty. Updated the ...
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0answers
1k views

FIPS integrity test failed on RHEL 7.5 with 4.X kernel

I have a Dell PowerEdge R7425 with Intel NVME P4500/P4510 NVME drives. On the 3.10 kernel, the NVME drives throw I/O errors very frequently, and these errors have led to a system halt once already. I ...
4
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1answer
989 views

RAIDs disappearing on reboot (Centos 7.5)

I'm trying to create 4 RAID 0 disk arrays on my system running Centos 7.5 and have the RAIDs automount after a reboot. For some reason, only one of the RAIDs /dev/md0 is persistent between boots. The ...
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0answers
879 views

Problem with starting Oracle Linux after Migrating form OVM to hyper-v

I am planing to move form OVM to hyper-v, in-order to do the migration, I shutdown OVM (VM is using Oracle Linux 7.2) normally, then exported the appliance from OVM Console, move it to Windows machine ...
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1answer
284 views

Unable to upgrade openSUSE Leap 42.2 to 42.3

I'm trying to upgrade from openSUSE Leap 42.2 to 42.3 using: :~> cd /etc/zypp/repos.d :~> sed -i 's/42.2/42.3/' * :~> zypper refresh :~> zypper dup :~> reboot After rebooting I get messages such ...
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0answers
48 views

Mageia 5.1 dracut error

im trying to boot into mageia 5.1 and it comes up with this error dracut warning: could not boot dracut warning: /dev/disk/by-uuid/3438-85aO does not exist
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1answer
332 views

Migrate from Initramfs-tools to Dracut

I have a question about migrating fron "Initramfs-tool" to "Dracut". Initramfs-tools relies on customization scripts hosted by the folders "/etc/initramfs-tools/" and "/usr/share/initramfs-tools/". "...
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1answer
13k views

warning /dev/centos/root swap centos-root does not exist — after configuring DRBD

I configured DRBD on default CentOS 7.3 Installation like following: /dev/centos/home was taking all the space in sda2 so reduced it and created /dev/centos/home (20% space) and /dev/centos/drbd (...
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3answers
23k views

How do I change dracut-initqueue timeout?

During boot, my CentOS 7 box yields a bunch of messages like [ 202.161851] myhost dracut-initqueue[381]: Warning: dracut-initqueue timeout - starting timeout scripts and then drops me to a prompt. I ...
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2answers
895 views

How can I execute tpm2_nvread in the initramfs image created by dracut for centOS 7?

I want to load unlock my LUKS partition (root file system) at boot time using a TPM 2.0. I've had no success using a keyscript=/path/to/script in my /etc/crypttab file, however I made progress using ...
1
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1answer
500 views

Should userspace stop MD RAID arrays during shutdown? If so, why?

The following comment confuses me: It just so happens, that dracut has code in the shutdown routine, which shuts down all raid arrays... For non-root disks this should be part of an mdadm ...
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1answer
1k views

How to add cryptsetup to Dracut

I'm switching to Dracut and I've numerous problems. In order to eliminate them one by one, first I want my system to boot correctly. So my Grub2 entry looks like this: menuentry 'dracut' { ...
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1answer
232 views

amazon aws : dracut mount filesystems in random order?

I have two linux instances on amazon. Both of them have one disk device. For test, I power off one instance (A) and attach its volume to the second one (B), as /dev/xvdf. Into this server, I can mount ...
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0answers
168 views

Making update-persistent changes to initrd in CentOS

I am booting a CentOS image via NFS, which requires a custom initramfs from dracut, with some extra modules. I want the kernel to get updated normally, using yum update. This will automatically ...
0
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1answer
364 views

Creating generic initramfs that is kernel-independent

I've just setup a proof-of-concept UEFI, PXE, NFS diskless booting system. For the NFS booting to work, I needed to create a custom initramfs using dracut-network including modules for nfs, network, ...
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0answers
5k views

Dracut not finding root device

When I boot my server, it shows the following and hangs forever: [ 88.166038] usb 2-1: device not accepting address 2, error -110 [ 88.285980] usb 2-1: new high-speed USB device number 3 using ...
0
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1answer
546 views

openSuse 42.2 is unable to boot when root is on RAID1 which is broken (with one missing/new/empty disk)

Here is the case: I have two disks setup in RAID 1 as follows: /dev/md0 (/dev/sda1 + /dev/sdb1) → /boot /dev/md1 (/dev/sda2 + /dev/sdb2) → / My scenario: Start server with RAID 1 and array fully ...
1
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1answer
2k views

Fedora 24 boot stops at “Starting Switch Root…” after disabling udev/udisks

I'm installing a new Fedora 24 system, and just for "fun", I ran this command: systemctl -t service|grep 'loaded active running'| perl -anle 'print "systemctl stop $F[0]; systemctl disable $F[0]"' | ...
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1answer
95 views

Cannot boot up when Adaptec SCSI card is replaced

Current Fedora 19 installation is on an Adaptec 29320 and I am trying to temporarily replace it with an Adaptec 29160. The functionality of the cards is very nearly the same except the replacement is ...
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0answers
429 views

build initramfs for different host

Cross compiling a kernel takes minutes, deploying the thing on the target machine takes an hour. Most of the time is spent generating the initramfs. Both the build host and the target run Fedora which ...
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2answers
3k views

Running dracut on AWS EBS Centos 7 prevents booting

I have a minimal Centos 7 build. When I run dracut --force, it builds a new initramfs that is 20mb smaller. The only difference in the modules section is an absence of qemu. localhost login: [ 3322....
3
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0answers
438 views

LUKS decryption at boot: using an nfs mount to store the key

I've been through this site for a number of LUKS related questions. I've seen methods for storing the LUKS key in plaintext on the root filesystem or on a USB key. My question is: Is there a way ...
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4answers
60k views

boot problem in linux

I have unfortunately format drive /dev/sda2. So all the /root,/home,swap LVM no longer exists. Because of this my server is unable to work properly. it shows only dracut#>Dracut Error: [ OK ] ...
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1answer
1k views

My CentOS 7 won't boot anymore

My CentOS 7 won't boot anymore. I returns by after boot: Assuming drive cache: write through I found some things to remove rhgb via the boot menu, but that didn't work. I remove it, and saved it ...
1
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1answer
2k views

Where are isoboot, boot=isolinux and iso-scan/filename parameters documented?

I see this example in the dracut docs: linux (loop)/isolinux/vmlinuz0 boot=isolinux iso-scan/filename=$isofile root=live:LABEL=$isolabel ro rd.live.image These texts: https://...