zfsonlinux/debian/tree/zfsutils-linux/usr/lib/zfs-linux/scrub
Stoiko Ivanov f17f9da9f3 sync scrub and trim cronjobs with debian upstream
* Pull in the changes to the automatic scrub cronjob from
  debian-upstream [0] commit
  f6d45405df0a2ed2748975667e8ea50714034d13
* Add a script and cronjob for regular trimming of pools
* Change the logic to scrub/trim pools based on a per pool('s root
  dataset property)

pulled the changes in as one commit instead of cherry-picking, since
the planned and reverted debconf questions would have caused
unneccessary churn.

commits identified by running:
`git log --full-diff -- debian/tree/zfsutils-linux/usr/lib/zfs-linux`
in a worktree from [0].

[0] https://salsa.debian.org/zfsonlinux-team/zfs/
Signed-off-by: Stoiko Ivanov <s.ivanov@proxmox.com>
2021-06-18 15:25:41 +02:00

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