Initial Stratis support

Ref. https://github.com/stratis-storage

Signed-off-by: Tony Asleson <tasleson@redhat.com>

modules.d/90stratis/module-setup.sh

@@ -0,0 +1,34 @@
+#!/bin/bash
+
+# called by dracut
+check() {
+    require_binaries stratisd-init thin_check thin_repair || return 1
+    return 255
+}
+
+# called by dracut
+depends() {
+    echo dm
+    return 0
+}
+
+# called by dracut
+installkernel() {
+    instmods xfs
+}
+
+# called by dracut
+install() {
+
+    inst_multiple stratisd-init thin_check thin_repair
+
+    if dracut_module_included "systemd"; then
+        inst_simple "${moddir}/stratisd-init.service" "${systemdsystemunitdir}/stratisd-init.service"
+        mkdir -p "${initdir}${systemdsystemunitdir}/sysinit.target.wants"
+        ln -rfs "${initdir}${systemdsystemunitdir}/stratisd-init.service" "${initdir}${systemdsystemunitdir}/sysinit.target.wants/stratisd-init.service"
+    else
+        inst_hook cmdline 25 "$moddir/stratisd-start.sh"
+        inst_hook cleanup 25 "$moddir/stratisd-stop.sh"
+    fi
+}
+

modules.d/90stratis/stratisd-init.service

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+[Unit]
+Description=A daemon that manages a pool of block devices to create flexible file systems
+Documentation=man:stratisd(8)
+Before=local-fs-pre.target
+DefaultDependencies=no
+
+[Service]
+Type=simple
+ExecStart=/sbin/stratisd-init --debug
+KillSignal=SIGINT
+StandardOutput=syslog
+StandardError=syslog
+
+[Install]
+WantedBy=sysinit.target

modules.d/90stratis/stratisd-start.sh

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+#!/bin/sh
+
+stratisd-init --debug > /dev/kmsg 2>&1 &

modules.d/90stratis/stratisd-stop.sh

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+#!/bin/sh
+
+[ -f /lib/dracut-lib.sh ] && . /lib/dracut-lib.sh
+
+pid=$(pidof stratisd-init)
+[ -n "$pid" ] && kill ${pid}