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=> openzfs#2087: turbo/initramfs - Initramfs scripts for ZoL.
Initramfs scripts for ZoL. * Put in /usr/share/initramfs-tools/ or /etc/initramfs-tools/. * With pull request openzfs#1476 (not yet merged) comes a verbose warning if /usr/bin/net doesn't exist or isn't executable. Just create a dummy... * If user haven't specified pool, but bootfs then use the first part of the bootfs path as pool name. * Add support for booting of a ZFS snapshot. Do this by cloning the snapshot into a dataset. If this the resulting dataset already exists, destroy it. Then set mountpoint=/ on that dataset and mount it on root. + If snapshot does not exist, use base dataset (the part before '@') as boot filesystem instead. * Add support for more kernel command line arguments (ideas taken from the Fedora/Redhat dracut script): + (zfs_force|zfs.force|zfsforce)=(on|yes|1) (ignore case). + root=zfs:AUTO => try to find rootfs automatically. + root=zfs:<dataset> + root=ZFS=<dataset> * Remove the existing '-f' option to 'zpool import', instead let this be controlled on the kernel command line. * Do not force-set mountpoint=/ - should (??) not be nessesary. * Support mounting a rootfs with mountpoint=legacy * Support both RPM based and DEB based system by removing the logic from the dracut script and instead use the logic in scripts/zfs-initramfs/scripts/zfs for both Debian GNU/Linux (etc) and RedHat/Fedora (etc). * Only run the local-* script(s) if/when it/they exists. * Don't auto import pools when loading module - keep better control of the imports. * If called with only 'rpool' (or only 'zfs-bootfs'), then fake it by setting 'root=zfs:AUTO' (to avoid duplication of code etc) so that it will be auto detected later. + If pool is specified and we're auto discovering, don't go through ALL pools, only the one we specified. * Rewrite the auto detection of bootfs in the auto detector. * Only try to import pool if it haven't already been imported (in the auto detector). * Add support for only having 'root=pool/dataset' option. * Remove the use of setting 'ZFS_RPOOL=rpool'. No longer nessesary. * Check if /scripts/local-* is either file or directory - should be dir, but just to be safe check both. * Make wait_for_udev wait for 10 seconds. * Add a configurable ZFS_INITRD_POST_MODPROBE_SLEEP (set in /etc/default/zfs) after the modprobe. * Merge openzfs#2196. Remove lines that contain only a hyphen (match '^-$' instead of '-'). * Add a 'default' file to go in '/etc/default/zfs'. * Support mounting additional filesystems (such as /var and /usr etc) in the initrd using ZFS_INITRD_ADDITIONAL_DATASETS set in /etc/defaults/zfs. * Add exceptions to pool imports. + Both for init and initrd script. * Make sure that the zpool.cache file is actually copied onto the initrd!! * Include /etc/modprobe.d/{zfs,spl}.conf in the initrd if they exist. * Export all pools found after the modprobe - zfs_autoimport_disable=1' don't seem to be working in >= 0.6.3. + This snippet will go away as soon as I can figure out why it doesn't, it's ugly!! * Only try /dev/disk/by-* in the initrd if USE_DISK_BY_ID is set. + Try this first, then fallback to using the cache file if that exist.
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| # Force the inclusion of Busybox in the initramfs. | ||
| BUSYBOX=y |
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| # ZoL userland configuration. | ||
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| # Run `zfs mount -a` during system start? | ||
| # This should be 'no' if zfs-mountall or a systemd generator | ||
| # is available. | ||
| ZFS_MOUNT='yes' | ||
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| # Run `zfs unmount -a` during system stop? | ||
| # This should be 'no' on most systems. | ||
| ZFS_UNMOUNT='yes' | ||
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| # Run `zfs share -a` during system start? | ||
| # nb: The shareiscsi, sharenfs, and sharesmb dataset properties. | ||
| ZFS_SHARE='yes' | ||
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| # Run `zfs unshare -a` during system stop? | ||
| ZFS_UNSHARE='yes' | ||
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| # Sould we use '-d /dev/disk/by-*' when importing pool. | ||
| # This is recomended, but the default 'no' uses the cache | ||
| # file. | ||
| # Variable is somewhat missleading. Previously the code | ||
| # tried _only_ '/dev/disk/by-id', but will now try any | ||
| # '/dev/disk/by-*' directory. | ||
| USE_DISK_BY_ID='yes' | ||
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| # Should the datasets be mounted verbosly (a mount counter | ||
| # will be used when mounting if set to 'yes'). | ||
| VERBOSE_MOUNT='no' | ||
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| # Should we allow overlay mounts (this is standard in Linux, | ||
| # but not ZFS which comes from Solaris where this is not allowed). | ||
| DO_OVERLAY_MOUNTS='no' | ||
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| # Any additional option to the 'zfs mount' command line. | ||
| # Include '-o' for each option wanted. | ||
| MOUNT_EXTRA_OPTIONS="" | ||
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| # Build kernel modules with the --enable-debug switch? | ||
| ZFS_DKMS_ENABLE_DEBUG='no' | ||
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| # Build kernel modules with the --enable-debug-dmu-tx switch? | ||
| ZFS_DKMS_ENABLE_DEBUG_DMU_TX='no' | ||
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| # Keep debugging symbols in kernel modules? | ||
| ZFS_DKMS_DISABLE_STRIP='no' | ||
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| # Wait for this many seconds in the initrd pre_mountroot? | ||
| # This delays startup and should be '0' on most systems. | ||
| ZFS_INITRD_PRE_MOUNTROOT_SLEEP='0' | ||
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| # Wait for this many seconds in the initrd mountroot? | ||
| # This delays startup and should be '0' on most systems. | ||
| # This might help on systems which have their ZFS root on | ||
| # a USB disk that takes just a little longer to be available | ||
| ZFS_INITRD_POST_MODPROBE_SLEEP='0' | ||
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| # List of additional datasets to mount after the root | ||
| # dataset is mounted. | ||
| # The init script will use the mountpoint specified in | ||
| # the 'mountpoint' property value in the dataset to | ||
| # determine where it should be mounted. | ||
| #ZFS_INITRD_ADDITIONAL_DATASETS="rpool/ROOT/usr_local" | ||
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| # Location of the lockfile. | ||
| LOCKDIR=/run/lock |
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| #!/bin/sh | ||
| # | ||
| # Add ZoL filesystem capabilities to an initrd, usually for a native ZFS root. | ||
| # | ||
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| # This hook installs udev rules for ZoL. | ||
| PREREQ="zdev" | ||
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| # These prerequisites are provided by the zfsutils package. The zdb utility is | ||
| # not strictly required, but it can be useful at the initramfs recovery prompt. | ||
| COPY_EXEC_LIST="/sbin/zdb /sbin/zpool /sbin/zfs /sbin/mount.zfs" | ||
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| # These prerequisites are provided by the base system. | ||
| COPY_EXEC_LIST="$COPY_EXEC_LIST /bin/hostname /sbin/blkid" | ||
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| # Explicitly specify all kernel modules because automatic dependency resolution | ||
| # is unreliable on many systems. | ||
| BASE_MODULES="zlib_deflate spl zavl zcommon znvpair zunicode zfs" | ||
| CRPT_MODULES="sun-ccm sun-gcm sun-ctr" | ||
| MANUAL_ADD_MODULES_LIST="$BASE_MODULES" | ||
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| # Generic result code. | ||
| RC=0 | ||
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| case $1 in | ||
| prereqs) | ||
| echo "$PREREQ" | ||
| exit 0 | ||
| ;; | ||
| esac | ||
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| for ii in $COPY_EXEC_LIST | ||
| do | ||
| if [ ! -x "$ii" ] | ||
| then | ||
| echo "Error: $ii is not executable." | ||
| RC=2 | ||
| fi | ||
| done | ||
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| if [ "$RC" -ne 0 ] | ||
| then | ||
| exit "$RC" | ||
| fi | ||
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| . /usr/share/initramfs-tools/hook-functions | ||
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| mkdir -p "$DESTDIR/etc/" | ||
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| # ZDB uses pthreads for some functions, but the library dependency is not | ||
| # automatically detected. The `find` utility and extended `cp` options are | ||
| # used here because libgcc_s.so could be in a subdirectory of /lib for | ||
| # multi-arch installations. | ||
| cp --target-directory="$DESTDIR" --parents $(find /lib -type f -name libgcc_s.so.1) | ||
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| for ii in $COPY_EXEC_LIST | ||
| do | ||
| copy_exec "$ii" | ||
| done | ||
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| for ii in $MANUAL_ADD_MODULES_LIST | ||
| do | ||
| manual_add_modules "$ii" | ||
| done | ||
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| if [ -f "/etc/hostname" ] | ||
| then | ||
| cp -p "/etc/hostname" "$DESTDIR/etc/" | ||
| else | ||
| hostname >"$DESTDIR/etc/hostname" | ||
| fi | ||
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| for ii in zfs zfs.conf spl spl.conf | ||
| do | ||
| if [ -f "/etc/modprobe.d/$ii" ]; then | ||
| if [ ! -d "$DESTDIR/etc/modprobe.d" ]; then | ||
| mkdir -p $DESTDIR/etc/modprobe.d | ||
| fi | ||
| cp -p "/etc/modprobe.d/$ii" $DESTDIR/etc/modprobe.d/ | ||
| fi | ||
| done | ||
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| # The spl-dkms package ensures that the /etc/hostid file exists. | ||
| # NB: Commentary in the spl-dkms.postinst script. | ||
| [ -f "/etc/hostid" ] && cp -p "/etc/hostid" "$DESTDIR/etc/hostid" | ||
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| # Install the zpool.cache file. | ||
| [ -d /boot/zfs ] && cp -r /boot/zfs "$DESTDIR/boot" | ||
| [ ! -d "$DESTDIR/boot/zfs" ] && mkdir -p "$DESTDIR/boot/zfs" | ||
| [ -f /etc/zfs/zpool.cache ] && cp /etc/zfs/zpool.cache $DESTDIR/boot/zfs/ | ||
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| # With pull request #1476 (not yet merged) comes a verbose warning | ||
| # if /usr/bin/net doesn't exist or isn't executable. Just create | ||
| # a dummy... | ||
| [ ! -d "$DESTDIR/usr/bin" ] && mkdir -p "$DESTDIR/usr/bin" | ||
| if [ ! -x "$DESTDIR/usr/bin/net" ]; then | ||
| touch "$DESTDIR/usr/bin/net" | ||
| chmod +x "$DESTDIR/usr/bin/net" | ||
| fi | ||
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| exit 0 |
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