Remove unnecessary references to slavery

The horrible effects of human slavery continue to impact society.  The
casual use of the term "slave" in computer software is an unnecessary
reference to a painful human experience.

This commit removes all possible references to the term "slave".

Implementation notes:

The zpool.d/slaves script is renamed to dm-deps, which uses the same
terminology as `dmsetup deps`.

References to the `/sys/class/block/$dev/slaves` directory remain.  This
directory name is determined by the Linux kernel.  Although
`dmsetup deps` provides the same information, it unfortunately requires
elevated privileges, whereas the `/sys/...` directory is world-readable.

Reviewed-by: Brian Behlendorf <[email protected]>
Reviewed-by: Ryan Moeller <[email protected]>
Signed-off-by: Matthew Ahrens <[email protected]>
Closes #10435 

1 files changed, 13 insertions, 13 deletions

diff --git a/contrib/dracut/02zfsexpandknowledge/module-setup.sh.in b/contrib/dracut/02zfsexpandknowledge/module-setup.sh.in
index a2a3ef037..8429bd109 100755
--- a/contrib/dracut/02zfsexpandknowledge/module-setup.sh.in
+++ b/contrib/dracut/02zfsexpandknowledge/module-setup.sh.in
@@ -74,10 +74,10 @@ check() {
     local blockdevs
     local fstype
     local majmin
-    local _slavedev
-    local _slavedevname
-    local _slavedevtype
-    local _slavemajmin
+    local _depdev
+    local _depdevname
+    local _depdevtype
+    local _depmajmin
     local _dev
 
 if [[ $hostonly ]]; then
@@ -108,15 +108,15 @@ if [[ $hostonly ]]; then
             host_fs_types["$dev"]="$fstype"
             majmin=$(get_maj_min "$dev")
             if [[ -d /sys/dev/block/$majmin/slaves ]] ; then
-                for _slavedev in /sys/dev/block/$majmin/slaves/*; do
-                    [[ -f $_slavedev/dev ]] || continue
-                    _slavedev=/dev/$(basename "$_slavedev")
-                    _slavedevname=$(udevadm info --query=property --name="$_slavedev" | grep "^DEVNAME=" | sed 's|^DEVNAME=||')
-                    _slavedevtype=$(get_devtype "$_slavedevname")
-                    _slavemajmin=$(get_maj_min "$_slavedevname")
-                    dinfo "zfsexpandknowledge: slave block device backing ZFS dataset $mp: $_slavedevname"
-                    array_contains "$_slavedevname" "${host_devs[@]}" || host_devs+=("$_slavedevname")
-                    host_fs_types["$_slavedevname"]="$_slavedevtype"
+                for _depdev in /sys/dev/block/$majmin/slaves/*; do
+                    [[ -f $_depdev/dev ]] || continue
+                    _depdev=/dev/$(basename "$_depdev")
+                    _depdevname=$(udevadm info --query=property --name="$_depdev" | grep "^DEVNAME=" | sed 's|^DEVNAME=||')
+                    _depdevtype=$(get_devtype "$_depdevname")
+                    _depmajmin=$(get_maj_min "$_depdevname")
+                    dinfo "zfsexpandknowledge: underlying block device backing ZFS dataset $mp: $_depdevname"
+                    array_contains "$_depdevname" "${host_devs[@]}" || host_devs+=("$_depdevname")
+                    host_fs_types["$_depdevname"]="$_depdevtype"
                 done
             fi
         done