Posts by dikov

dikov · [x86-64] ZFS Support dikov March 6, 2025 at 12:54 AM

After trial and error here is what worked for me. I built in Ubuntu.

Code

$ sudo apt-get update
$ sudo apt-get install gcc g++ gperf flex bison gawk help2man ncurses-dev make exuberant-ctags texinfo git bc libexpat-dev libxml2-dev libxml2-utils xsltproc python-dev python3-dev zlib1g-dev libssl-dev unzip autopoint libtool shtool automake pkg-config gettext
$ git clone https://github.com/LibreELEC/LibreELEC.tv.git
$ cd LibreELEC.tv
$ echo "CONFIG_ZFS=y" >> projects/Generic/linux/linux.x86_64.conf
$ echo "ADDITIONAL_PACKAGES+=\" zfs\"" >> projects/Generic/options
$ mkdir -p packages/filesystem/zfs

create instructions to build a zfs module

Code

$ nano packages/filesystem/zfs

Code

PKG_NAME="zfs" 
PKG_VERSION="2.3.0" 
PKG_SHA256="6e8787eab55f24c6b9c317f3fe9b0da9a665eb34c31df88ff368d9a92e9356a6" 
PKG_URL="https://github.com/openzfs/zfs/releases/download/zfs-${PKG_VERSION}/zfs-${PKG_VERSION}.tar.gz" 
PKG_DESCRIPTION="ZFS filesystem support" 
PKG_IS_KERNEL_PKG="yes" 
PKG_DEPENDS_TARGET="toolchain linux libunwind zlib" 

configure_target() { 
 cd $PKG_BUILD 
 KERNEL_DIR=$(kernel_path) 
 if [ ! -d "$KERNEL_DIR" ]; then 
   echo "Kernel directory not found: $KERNEL_DIR" 
   exit 1 
 fi 
 export KERNEL_CROSS_COMPILE=${TARGET_KERNEL_PREFIX} 
 export KERNEL_ARCH=${TARGET_KERNEL_ARCH} 
 ./configure --host=$TARGET_NAME --prefix=/usr \ 
             --with-linux="$KERNEL_DIR" \ 
             --with-linux-obj="$KERNEL_DIR" \ 
             --disable-static \ 
             --enable-shared 
} 

make_target() { 
 make V=1 \ 
      ARCH=${TARGET_KERNEL_ARCH} \ 
      KSRC=$(kernel_path) \ 
      CROSS_COMPILE=${TARGET_KERNEL_PREFIX} \ 
      LDFLAGS="$LDFLAGS -lunwind -lz" 
} 

makeinstall_target() { 
 # Install ZFS kernel modules 
 mkdir -p ${INSTALL}/$(get_full_module_dir)/fs/${PKG_NAME} 
 cp $PKG_BUILD/module/*.ko ${INSTALL}/$(get_full_module_dir)/fs/${PKG_NAME}/ 
 # Install user-space tools manually 
 mkdir -p ${INSTALL}/usr/sbin 
 cp $PKG_BUILD/.libs/zfs ${INSTALL}/usr/sbin/ 
 cp $PKG_BUILD/.libs/zpool ${INSTALL}/usr/sbin/ 
 cp $PKG_BUILD/.libs/zdb ${INSTALL}/usr/sbin/ 
 cp $PKG_BUILD/.libs/zinject ${INSTALL}/usr/sbin/ 
 cp $PKG_BUILD/.libs/zstream ${INSTALL}/usr/sbin/ 
 cp $PKG_BUILD/.libs/ztest ${INSTALL}/usr/sbin/ 
 cp $PKG_BUILD/.libs/zhack ${INSTALL}/usr/sbin/ 
 cp $PKG_BUILD/.libs/zpool_influxdb ${INSTALL}/usr/sbin/ 
 cp $PKG_BUILD/.libs/mount.zfs ${INSTALL}/usr/sbin/ 
 cp $PKG_BUILD/.libs/zfs_ids_to_path ${INSTALL}/usr/sbin/ 
 # Install shared libraries 
 mkdir -p ${INSTALL}/usr/lib 
 cp $PKG_BUILD/.libs/libzfs.so* ${INSTALL}/usr/lib/ 
 cp $PKG_BUILD/.libs/libzfs_core.so* ${INSTALL}/usr/lib/ 
 cp $PKG_BUILD/.libs/libnvpair.so* ${INSTALL}/usr/lib/ 
 cp $PKG_BUILD/.libs/libuutil.so* ${INSTALL}/usr/lib/ 
 cp $PKG_BUILD/.libs/libzpool.so* ${INSTALL}/usr/lib/ 
 # Ensure ZFS loads on boot 
 mkdir -p ${INSTALL}/etc/modules-load.d 
 echo "zfs" > ${INSTALL}/etc/modules-load.d/zfs.conf 
}

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It's time to compile the build!

Code

$ PROJECT=Generic ARCH=x86_64 make image VERBOSE=1

If it did not crash, proceed to installation. Insert installation USB flash drive (here as /dev/sda)

Code

$ cd target
$ gunzip LibreELEC-Generic.x86_64-13.0-devel-20250301013418-f3936e7.tar.img
$ sudo dd if=LibreELEC-Generic.x86_64-13.0-devel-20250301013418-f3936e7.tar of=/dev/sda bs=4M

Install as usual (Insert the flash drive into a computer that you want to run libreelec; Boot from it, Install LibreElec on another drive; Reboot)

At first launch, enable ssh . Then

$ ssh root@<ip.of.your.htpc>

at htpc

Code

$ modprobe zfs
$ zpool import -f <ZFS_8Tb> (i.e. name of your ZFS_drive)
$ zfs set mountpoint=/var/media/ZFS ZFS_8Tb

To make this ZFS drive visible among in the list of filesystems, folders and drives use Add button and point to /var/media/ZFS.

To automate the process so after reboot it will be there:

nano /storage/.config/autostart.sh

Bash

#!/bin/sh 
depmod -a 6.12.15 
modprobe zfs 
zpool import -f ZFS_8Tb 
zfs set mountpoint=/var/media/ZFS ZFS_8Tb

dikov · [x86-64] ZFS Support dikov February 28, 2025 at 11:30 PM

I just compared build directories of zfs (installing improperly) to nano (installed properly)
in case of nano there are files withing:

$ ls nano-8.3/.x86_64-libreelec-linux-gnu/
config.h config.log config.status configure.lineno doc lib m4 Makefile po src stamp-h1 syntax
but same is empty in zfs folder.
$ ls zfs-2.3.0/.x86_64-libreelec-linux-gnu/

dikov · [x86-64] ZFS Support dikov February 28, 2025 at 9:33 PM

Heitbaum,

Thank you for the suggestion. This indeed helped to install zfs kernel modules along with others, so when I boot it i have all modules in place, but zfs userspace tools (zpool and )

How to add them?

dikov · [x86-64] ZFS Support dikov February 28, 2025 at 6:49 AM

Hi,

Thank you for the answers. With variable set

Code

MAKE=gmake
LINUX_DIR=/full/path/to/LibreElec/kernel/LibreELEC.tv/build.LibreELEC-Generic.x86_64-13.0-devel/build/linux-6.12.15
PROJECT=Generic ARCH=x86_64 make image VERBOSE=1

and package.md

Code

PKG_NAME="zfs"
PKG_VERSION="2.3.0"
PKG_SHA256="6e8787eab55f24c6b9c317f3fe9b0da9a665eb34c31df88ff368d9a92e9356a6"
PKG_URL="https://github.com/openzfs/zfs/releases/download/zfs-${PKG_VERSION}/zfs-${PKG_VERSION}.tar.gz"
PKG_DESCRIPTION="ZFS filesystem support"
PKG_IS_KERNEL_PKG="yes"
PKG_DEPENDS_TARGET="toolchain linux libunwind zlib"

configure_target() {
  cd $PKG_BUILD
  KERNEL_DIR=$(kernel_path)
  if [ ! -d "$KERNEL_DIR" ]; then
    echo "Kernel directory not found: $KERNEL_DIR"
    exit 1
  fi
  export KERNEL_CROSS_COMPILE=${TARGET_KERNEL_PREFIX}
  export KERNEL_ARCH=${TARGET_KERNEL_ARCH}
  ./configure --host=$TARGET_NAME --prefix=/usr \
              --with-linux="$KERNEL_DIR" \
              --with-linux-obj="$KERNEL_DIR" \
              --disable-static \
              --enable-shared
}

make_target() {
  make V=1 \
       ARCH=${TARGET_KERNEL_ARCH} \
       KSRC=$(kernel_path) \
       CROSS_COMPILE=${TARGET_KERNEL_PREFIX} \
       LDFLAGS="$LDFLAGS -lunwind -lz"
}

makeinstall_target() {
  # Install kernel modules to standard fs/zfs directory
  mkdir -p ${INSTALL}/$(get_full_module_dir)/fs/zfs
  find $PKG_BUILD/module -name "*.ko" -exec cp {} ${INSTALL}/$(get_full_module_dir)/fs/zfs/ \;
  # Install user-space tools
  make install DESTDIR=$INSTALL
  # Generate module dependencies
  ${KERNEL_CROSS_COMPILE}depmod -a -b ${INSTALL} 6.12.15
}

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I successfully compiled a built , but it appears that this setup overrides all other drivers in /lib/modules/6.2.15/

Code

ls /lib/modules/6.12.15/ 
extra                      modules.dep.bin 
modules.alias              modules.devname 
modules.alias.bin          modules.softdep 
modules.builtin.alias.bin  modules.symbols 
modules.builtin.bin        modules.symbols.bin 
modules.dep                modules.weakdep 
LibreELEC:~ # ls /lib/modules/6.12.15/extra/ 
spl.ko  zfs.ko

and I need to load zfs with

insmod /lib/modules/6.12.15/extra/spl.ko
insmod /lib/modules/6.12.15/extra/zfs.ko
zpool import -f dSTOR_8Tb
zfs set mountpoint=/var/media/dSTOR dSTOR_8Tb
zfs mount dSTOR_8Tb

How to add zfs drivers to the modules in a right manner?

Thank you

dikov · [x86-64] ZFS Support dikov February 26, 2025 at 4:15 PM

Quote from chewitt

We intentionally omit all forms of software RAID to reduce the scope of what we need to support and maintain. ZFS might interest a small number of people, but it's a small number. The remaining 99.9995% of our userbase has no clue what ZFS is or how to use or benefit from it's features. There's no objection to someone packaging ZFS as an add-on, but it's not for the core distro.
No ideas on the build issue .. not something I personally have time to look at right now, but others might comment.

What filesystem for a large storage then many people use? Since I am a Linux guy, I need best compatibility with it.

dikov · [x86-64] ZFS Support dikov February 26, 2025 at 4:36 AM

Hi there,

I was curious lack of support of ZFS in LibreElec (is there any reason for that?) so i want to build my own.
Three days and still nothing.

Here is my package.md

Code

PKG_NAME="zfs" 
PKG_VERSION="2.3.0" 
PKG_SHA256="6e8787eab55f24c6b9c317f3fe9b0da9a665eb34c31df88ff368d9a92e9356a6" 
PKG_URL="https://github.com/openzfs/zfs/releases/download/zfs-$%7BPKG_VERSION%7D/zfs-$%7BPKG_VERSION%7D.tar.gz" 
PKG_DEPENDS_TARGET="toolchain linux" 
PKG_DESCRIPTION="ZFS filesystem support" 
PKG_TOOLCHAIN="autotools" 

pre_configure_target() { 
cd $PKG_BUILD 
if [ ! -f ./configure ]; then 
echo "configure script missing after autoreconf!" 
exit 1 
fi 
} 

configure_target() { 
cd $PKG_BUILD 
./configure --host=$TARGET_NAME --prefix=/usr \ 
--with-linux=$LINUX_DIR \ 
--with-linux-obj=$LINUX_DIR \ 
--disable-dependency-tracking 
# --disable-code-coverage 
} 

make_target() { 
make 
} 

makeinstall_target() { 
make install DESTDIR=$INSTALL 
} 

Which gives me error

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config.status: creating module/Makefile
config.status: creating rpm/generic/zfs-dkms.spec
config.status: creating rpm/generic/zfs-kmod.spec
config.status: creating rpm/generic/zfs.spec
config.status: creating rpm/redhat/zfs-dkms.spec
config.status: creating rpm/redhat/zfs-kmod.spec
config.status: creating rpm/redhat/zfs.spec
config.status: creating tests/zfs-tests/tests/Makefile
config.status: creating zfs.release
config.status: creating zfs_config.h
config.status: executing depfiles commands
config.status: executing libtool commands
config.status: executing po-directories commands
make[1]: Entering directory '/home/work/SOFT/Linux/libreElec/LibreELEC.tv/build.LibreELEC-Generic.x86_64-13.0-devel/b
uild/zfs-2.3.0'
Makefile:14040: *** missing separator. Stop.
make[1]: Leaving directory '/home/work/SOFT/Linux/libreElec/LibreELEC.tv/build.LibreELEC-Generic.x86_64-13.0-devel/bu
ild/zfs-2.3.0'
FAILURE: scripts/build zfs:target during make_target (package.mk)
*********** FAILED COMMAND ***********
make
**************************************
*********** FAILED COMMAND ***********
${SCRIPTS}/build "${1}" "${PARENT_PKG}"
**************************************
FAILURE: scripts/install zfs:target has failed!

The following log for this failure is available:
/home/work/SOFT/Linux/libreElec/LibreELEC.tv/build.LibreELEC-Generic.x86_64-13.0-devel/.threads/logs/188.log

>>> zfs:target seq 188 >>>
[303/314] [FAIL] install zfs:target

The following log for this failure is available:
/home/work/SOFT/Linux/libreElec/LibreELEC.tv/build.LibreELEC-Generic.x86_64-13.0-devel/.threads/logs/188.log

Parallel build failure - see log for details. Time of failure: Tue Feb 25 22:26:12 CST 2025
make: *** [Makefile:10: image] Error 1

In the zfs Makefile the line 14430 is

@CODE_COVERAGE_RULES@

I tried to disable --disable-dependency-tracking

But still it did not work as you see.

Any ideas?

Cheers,