/usr/lib/zfs-linux/zpool.d/slaves is in zfsutils-linux 0.7.5-1ubuntu15.
This file is owned by root:root, with mode 0o755.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 | #!/bin/sh
#
# Show device mapper slave devices. This is useful for looking up the
# /dev/sd* devices associated with a dm or multipath device. For example:
#
# $ ls /sys/block/dm-113/slaves/
# sddt sdjw
#
if [ "$1" = "-h" ] ; then
echo "Show device mapper slave devices."
exit
fi
dev="$VDEV_PATH"
# If the VDEV path is a symlink, resolve it to a real device
if [ -L "$dev" ] ; then
dev=$(readlink "$dev")
fi
dev=$(basename "$dev")
val=""
if [ -d "/sys/class/block/$dev/slaves" ] ; then
# ls -C: output in columns, no newlines
val=$(ls -C "/sys/class/block/$dev/slaves")
# ls -C will print two spaces between files; change to one space.
val=$(echo "$val" | sed -r 's/[[:blank:]]+/ /g')
fi
echo "slaves=$val"
|