61 lines
1.7 KiB
Plaintext
61 lines
1.7 KiB
Plaintext
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#!/bin/sh -eu
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# directly exit successfully when zfs module is not loaded
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if ! [ -d /sys/module/zfs ]; then
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exit 0
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fi
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# [auto] / enable / disable
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PROPERTY_NAME="org.debian:periodic-trim"
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get_property () {
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# Detect the ${PROPERTY_NAME} property on a given pool.
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# We are abusing user-defined properties on the root dataset,
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# since they're not available on pools https://github.com/openzfs/zfs/pull/11680
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# TODO: use zpool user-defined property when such feature is available.
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pool="$1"
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zfs get -H -o value "${PROPERTY_NAME}" "${pool}" 2>/dev/null || return 1
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}
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trim_if_not_already_trimming () {
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pool="$1"
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if ! zpool status "${pool}" | grep -q "trimming"; then
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# Ignore errors (i.e. HDD pools),
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# and continue with trimming other pools.
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zpool trim "${pool}" || true
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fi
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}
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zpool_is_nvme_only () {
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zpool=$1
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# get a list of devices attached to the specified zpool
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zpool list -vHPL "${zpool}" |
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awk -F'\t' '$2 ~ /^\/dev\// {
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if($2 !~ /^\/dev\/nvme/)
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exit 1
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}'
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}
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# TRIM all healthy pools that are not already trimming as per their configs.
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zpool list -H -o health,name 2>&1 | \
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awk -F'\t' '$1 == "ONLINE" {print $2}' | \
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while read pool
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do
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# read user-defined config
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ret=$(get_property "${pool}")
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if [ $? -ne 0 ] || [ "disable" = "${ret}" ]; then
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:
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elif [ "enable" = "${ret}" ]; then
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trim_if_not_already_trimming "${pool}"
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elif [ "-" = "${ret}" ] || [ "auto" = "${ret}" ]; then
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if zpool_is_nvme_only "${pool}"; then
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trim_if_not_already_trimming "${pool}"
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fi
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else
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cat > /dev/stderr <<EOF
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$0: [WARNING] illegal value "${ret}" for property "${PROPERTY_NAME}" of ZFS dataset "${pool}".
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$0: Acceptable choices for this property are: auto, enable, disable. The default is auto.
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EOF
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fi
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done
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