__ssrq_zfs add --tunable and set ZFS tunables on kamor

riiengineering · Mar 20, 2023 · d61fff5 · d61fff5
1 parent cfaf4e4
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diff --git a/type/__ssrq_zfs/man.rst b/type/__ssrq_zfs/man.rst
@@ -20,6 +20,14 @@ OPTIONAL PARAMETERS
 -------------------
 mailto
     The user or email address to which alert mails should be sent to.
+tunable
+    Set a ZFS tunable parameter to the given value.
+    Use this option multiple times to set more than one tunable.
+
+    The value should be a key-value pair separated by a ``=`` (equals sign).
+
+    For a reference of available tunables, cf.
+    `zfs-module-parameters(5) <https://openzfs.github.io/openzfs-docs/man/5/zfs-module-parameters.5.html>`_.
 
 
 BOOLEAN PARAMETERS

diff --git a/type/__ssrq_zfs/manifest b/type/__ssrq_zfs/manifest
@@ -76,6 +76,16 @@ in
 		;;
 esac
 
+require='__package_apt/zfs-modules' \
+__block /etc/modprobe.d/zfs.conf:cdist-zfs-tunables \
+	--state "$(test -s "${__object:?}/parameter/tunable" && echo present || echo absent)" \
+	--file /etc/modprobe.d/zfs.conf \
+	--prefix '# cdist:zfs-tunables' \
+	--suffix '#/cdist:zfs-tunables' \
+	--text - <<EOF
+$(sed -e 's/^/options zfs /' "${__object:?}/parameter/tunable")
+EOF
+
 set_zed_rc() {
 	require=__package_apt/zfs-zed \
 	__key_value /etc/zfs/zed.d/zed.rc:"$1" \

diff --git a/type/__ssrq_zfs/parameter/optional_multiple b/type/__ssrq_zfs/parameter/optional_multiple
@@ -0,0 +1 @@
+tunable