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d45702bcfa
5dc1ff29 changed the user space program to mount a zfs snapshot
from /bin/sh to /usr/bin/env. If the executable is not present
in the initramfs then snapshots cannot be automounted.
Reviewed-by: George Melikov <mail@gmelikov.ru>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Richard Laager <rlaager@wiktel.com>
Reviewed-by: Giuseppe Di Natale <dinatale2@llnl.gov>
Signed-off-by: James Dingwall <james.dingwall@zynstra.com>
Closes #5360
Closes #6913
Conflicts:
contrib/initramfs/hooks/zfs
105 lines
2.6 KiB
Bash
Executable File
105 lines
2.6 KiB
Bash
Executable File
#!/bin/sh
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#
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# Add ZoL filesystem capabilities to an initrd, usually for a native ZFS root.
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#
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# This hook installs udev rules for ZoL.
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PREREQ="zdev"
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# These prerequisites are provided by the zfsutils package. The zdb utility is
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# not strictly required, but it can be useful at the initramfs recovery prompt.
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COPY_EXEC_LIST="/sbin/zdb /sbin/zpool /sbin/zfs /sbin/mount.zfs"
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COPY_EXEC_LIST="$COPY_EXEC_LIST /usr/bin/dirname /lib/udev/vdev_id"
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COPY_FILE_LIST="/etc/hostid /etc/zfs/zpool.cache /etc/default/zfs"
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COPY_FILE_LIST="$COPY_FILE_LIST /etc/zfs/zfs-functions /etc/zfs/vdev_id.conf"
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COPY_FILE_LIST="$COPY_FILE_LIST /lib/udev/rules.d/69-vdev.rules"
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# These prerequisites are provided by the base system.
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COPY_EXEC_LIST="$COPY_EXEC_LIST /usr/bin/dirname /bin/hostname /sbin/blkid"
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COPY_EXEC_LIST="$COPY_EXEC_LIST /usr/bin/env"
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# Explicitly specify all kernel modules because automatic dependency resolution
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# is unreliable on many systems.
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BASE_MODULES="zlib_deflate spl zavl zcommon znvpair zunicode zfs icp"
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CRPT_MODULES="sun-ccm sun-gcm sun-ctr"
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MANUAL_ADD_MODULES_LIST="$BASE_MODULES"
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# Generic result code.
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RC=0
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case $1 in
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prereqs)
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echo "$PREREQ"
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exit 0
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;;
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esac
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for ii in $COPY_EXEC_LIST
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do
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if [ ! -x "$ii" ]
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then
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echo "Error: $ii is not executable."
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RC=2
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fi
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done
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if [ "$RC" -ne 0 ]
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then
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exit "$RC"
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fi
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. /usr/share/initramfs-tools/hook-functions
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mkdir -p "$DESTDIR/etc/"
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# ZDB uses pthreads for some functions, but the library dependency is not
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# automatically detected. The `find` utility and extended `cp` options are
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# used here because libgcc_s.so could be in a subdirectory of /lib for
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# multi-arch installations.
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cp --target-directory="$DESTDIR" --parents $(find /lib/ -type f -name libgcc_s.so.1)
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for ii in $COPY_EXEC_LIST
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do
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copy_exec "$ii"
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done
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for ii in $COPY_FILE_LIST
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do
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dir=$(dirname "$ii")
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[ -d "$dir" ] && mkdir -p "$DESTDIR/$dir"
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[ -f "$ii" ] && cp -p "$ii" "$DESTDIR/$ii"
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done
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for ii in $MANUAL_ADD_MODULES_LIST
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do
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manual_add_modules "$ii"
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done
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if [ -f "/etc/hostname" ]
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then
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cp -p "/etc/hostname" "$DESTDIR/etc/"
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else
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hostname >"$DESTDIR/etc/hostname"
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fi
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for ii in zfs zfs.conf spl spl.conf
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do
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if [ -f "/etc/modprobe.d/$ii" ]; then
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if [ ! -d "$DESTDIR/etc/modprobe.d" ]; then
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mkdir -p $DESTDIR/etc/modprobe.d
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fi
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cp -p "/etc/modprobe.d/$ii" $DESTDIR/etc/modprobe.d/
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fi
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done
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# With pull request #1476 (not yet merged) comes a verbose warning
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# if /usr/bin/net doesn't exist or isn't executable. Just create
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# a dummy...
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[ ! -d "$DESTDIR/usr/bin" ] && mkdir -p "$DESTDIR/usr/bin"
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if [ ! -x "$DESTDIR/usr/bin/net" ]; then
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touch "$DESTDIR/usr/bin/net"
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chmod +x "$DESTDIR/usr/bin/net"
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fi
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exit 0
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