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iotzan @lemmy.world
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Issue loading OpenZFS kernel modules in Fedora Silverblue

  • Thank you! This is the page where I discovered that I can try rpm-ostree kargs --append=modprobe=zfs, which didn't work.
    Still, as far as I understand it, ublue managed to overcome this, as they do offer a Fedora version with zfs included.
    What am I missing?

    •
    Issue loading OpenZFS kernel modules in Fedora Silverblue

  • This is where my knowledge of Linux falls short.

    is the package you installed for ZFS a DKMS kernel module, or a binary one?

    In both Fedora and Silverblue I find the same, ZFS-related files, under /usr/sbin/

     Jan  1  1970 blkzone
lrwxrwxrwx. 43 root root      11 Feb 28 13:59 cache_metadata_size -> pdata_tools
-rwxr-xr-x.  3 root root   24176 Jan  1  1970 fatresize
-rwxr-xr-x.  3 root root     756 Jan  1  1970 fsck.zfs
-rwxr-xr-x.  3 root root   15960 Jan  1  1970 fsfreeze
lrwxrwxrwx. 91 root root       3 Feb 28 13:59 lvresize -> lvm
-rwxr-xr-x.  3 root root   24104 Jan  1  1970 mount.zfs
lrwxrwxrwx.  3 root root      22 Feb 28 13:59 named-checkzone -> ../bin/named-checkzone
lrwxrwxrwx.  3 root root      24 Feb 28 13:59 named-compilezone -> ../bin/named-compilezone
-rwxr-xr-x.  3 root root   32568 Jan  1  1970 nilfs-resize
-rwxr-xr-x.  3 root root   69672 Jan  1  1970 ntfsresize
lrwxrwxrwx. 91 root root       3 Feb 28 13:59 pvresize -> lvm
-rwxr-xr-x.  3 root root   73784 Jan  1  1970 resize2fs
lrwxrwxrwx. 11 root root       9 Feb 28 13:59 resize.f2fs -> fsck.f2fs
-rwxr-xr-x.  3 root root   24408 Jan  1  1970 resizepart
lrwxrwxrwx. 43 root root      11 Feb 28 13:59 thin_metadata_size -> pdata_tools
-rwxr-xr-x.  3 root root     804 Jan  1  1970 xfs_freeze
-rwxr-xr-x.  3 root root  212440 Jan  1  1970 zdb
-rwxr-xr-x.  3 root root  107736 Jan  1  1970 zed
-rwxr-xr-x.  3 root root  149984 Jan  1  1970 zfs
-rwxr-xr-x.  3 root root   15920 Jan  1  1970 zfs_ids_to_path
-rwxr-xr-x.  3 root root   15920 Jan  1  1970 zgenhostid
-rwxr-xr-x.  3 root root   32472 Jan  1  1970 zhack
-rwxr-xr-x.  3 root root   65400 Jan  1  1970 zic
-rwxr-xr-x.  3 root root   36536 Jan  1  1970 zinject
-rwxr-xr-x.  3 root root  264288 Jan  1  1970 zpool
-rwxr-xr-x.  3 root root   57688 Jan  1  1970 zramctl
-rwxr-xr-x.  3 root root   40720 Jan  1  1970 zstream
lrwxrwxrwx.  3 root root       7 Mar  4 10:20 zstreamdump -> zstream
-rwxr-xr-x.  3 root root  162208 Jan  1  1970 ztest
-rwxr-xr-x.  3 root root   53384 Jan  1  1970 zvbid

    Also, ztest does something

    verifying concrete vdev 0, metaslab 11 of 12 ...
loading concrete vdev 0, metaslab 11 of 12 ...
verifying concrete vdev 0, metaslab 11 of 12 ...

    I assume, therefor, that OpenZFS exists, however the kernel is not loading the related module.
    Binary, library or something else - how can I tell?

    •
    Issue loading OpenZFS kernel modules in Fedora Silverblue

  • I chose Fedora since I'm most familiar with RedHat from my professional activities.

    • Linux @lemmy.ml iotzan @lemmy.world

    Issue loading OpenZFS kernel modules in Fedora Silverblue

    Hello good people,

    Hoping this is an appropriate place for troubleshooting questions, I'm learning Linux & OpenZFS in preparation of a server + NAS build, currently working in VMware Workstation. I have successfully setup OpenZFS on Fedora 39 and have configured my zpool using virtual disks.

    Now I am looking to replicate the setup on Fedora Silverblue: setup OpenZFS, import the existing disks, then attach the zpool.

    1. Import the OpenZFS repository

    > rpm-ostree install -y https://zfsonlinux.org/fedora/zfs-release-2-4$(rpm --eval "%{dist}").noarch.rpm

    2. Confirmed zfs-fuse is not used

    > rpm-ostree override remove zfs-fuse error: Package "zfs-fuse" not found

    3. Layer the kernel headers

    > rpm-ostree install kernel-devel

    4. Layer OpenZFS

    > rpm-ostree install zfs

    5. Confirmed status

    > rpm-ostree status State: idle Deployments: ● fedora:fedora/39/x86_64/kinoite Version: 39.20240304.0 (2024-03-04T00:39:42Z) BaseCommit: b30269aa0e2604e24fd74596a75ee79ef77e6bc2b20f87b49d02f2796ccd3da2 GPGSignature: Valid signature by E8F23996F23218640CB44CBE75CF5AC418B8E74C LayeredPackages: kernel-devel zfs LocalPackages: zfs-release-2-4.fc39.noarch

    6. I was expecting the next step to fail

    > modprobe zfs modprobe: FATAL: Module zfs not found in directory /lib/modules/6.7.7-200.fc39.x86_64 Nevertheless, I went ahead and created the 2 zfs.conf files as described in the OpenZFS documentation. > cat /etc/modules-load.d/zfs.conf\ zfs\ > cat /etc/dnf/protected.d/zfs.conf\ zfs

    7. This is where I am now stuck

    I have tired a number of things such as:

    i. Adding modprobe as a kernel argument similar to Silverblue using nVidia drivers

    > rpm-ostree kargs --append=modprobe=zfs ``` rpm-ostree kargs rhgb quiet root=UUID=cbaf12f4-d5b4-4d24-83d6-83ad53730f2a rootflags=subvol=root rw ostree=/ostree/boot.1/fedora/5d2cc07d31373ad2a64ab4ed610ce5a45625bd317c1447d2947a489056a5c077/0 modprobe=zfs

    ```

    ii. Installed, then disabled, rpm-ostree initramfs, continuing instead with initramfs-etc as described here

    > rpm-ostree initramfs-etc --track=/etc/modules-load.d/zfs.conf\ > rpm-ostree initramfs-etc --track=/etc/dnf/protected.d/zfs.conf rpm-ostree status State: idle Deployments: ● fedora:fedora/39/x86_64/kinoite Version: 39.20240304.0 (2024-03-04T00:39:42Z) BaseCommit: b30269aa0e2604e24fd74596a75ee79ef77e6bc2b20f87b49d02f2796ccd3da2 GPGSignature: Valid signature by E8F23996F23218640CB44CBE75CF5AC418B8E74C LayeredPackages: kernel-devel zfs LocalPackages: zfs-release-2-4.fc39.noarch InitramfsEtc: /etc/dnf/protected.d/zfs.conf /etc/modules-load.d/zfs.conf

    8. zfs, zpool seem ok as I can get the help output or read the man pages, however:

    > zpool status\ > The ZFS modules cannot be auto-loaded.\ > Try running 'modprobe zfs' as root to manually load them.

    > zfs get all\ > The ZFS modules cannot be auto-loaded.\ > Try running 'modprobe zfs' as root to manually load them.

    Obviously, I'm missing something due to my gaps in experience with Linux. I see that Universal Blue has incorporated OpenZFS as described on the GitHub page, so it should be possible for me to achieve this as well, I suppose.

    Any pointers, documentation or advice is appreciated!

    11