freebsd-dev/etc/periodic/daily/800.scrub-zfs
Xin LI 8017fd8eb9 Increase default scrub threshold from 30 days to 5 weeks. Using
whole weeks makes it easier to predicate when the scrub would
happen.

MFC after:	1 week
2011-10-27 21:25:41 +00:00

99 lines
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#!/bin/sh
#
# $FreeBSD$
#
# If there is a global system configuration file, suck it in.
#
newline="
" # A single newline
if [ -r /etc/defaults/periodic.conf ]
then
. /etc/defaults/periodic.conf
source_periodic_confs
fi
: ${daily_scrub_zfs_default_threshold=35}
case "$daily_scrub_zfs_enable" in
[Yy][Ee][Ss])
echo
echo 'Scrubbing of zfs pools:'
if [ -z "${daily_scrub_zfs_pools}" ]; then
daily_scrub_zfs_pools="$(zpool list -H -o name)"
fi
rc=0
for pool in ${daily_scrub_zfs_pools}; do
# sanity check
_status=$(zpool list "${pool}" 2> /dev/null)
if [ $? -ne 0 ]; then
rc=2
echo " WARNING: pool '${pool}' specified in"
echo " '/etc/periodic.conf:daily_scrub_zfs_pools'"
echo " does not exist"
continue
fi
_status=${_status##*$newline}
case ${_status} in
*FAULTED*)
rc=3
echo "Skipping faulted pool: ${pool}"
continue ;;
esac
# determine how many days shall be between scrubs
eval _pool_threshold=\${daily_scrub_zfs_$(echo "${pool}"|tr ".:-" "_")_threshold}
if [ -z "${_pool_threshold}" ];then
_pool_threshold=${daily_scrub_zfs_default_threshold}
fi
_last_scrub=$(zpool history ${pool} | \
egrep "^[0-9\.\:\-]{19} zpool scrub ${pool}\$" | tail -1 |\
cut -d ' ' -f 1)
if [ -z "${_last_scrub}" ]; then
# creation time of the pool if no scrub was done
_last_scrub=$(zpool history ${pool} | \
sed -ne '2s/ .*$//p')
fi
# Now minus last scrub (both in seconds) converted to days.
_scrub_diff=$(expr -e \( $(date +%s) - \
$(date -j -f %F.%T ${_last_scrub} +%s) \) / 60 / 60 / 24)
if [ ${_scrub_diff} -lt ${_pool_threshold} ]; then
echo " skipping scrubbing of pool '${pool}':"
echo " last scrubbing is ${_scrub_diff} days ago, threshold is set to ${_pool_threshold} days"
continue
fi
_status="$(zpool status ${pool} | grep scrub:)"
case "${_status}" in
*"scrub in progress"*)
echo " scrubbing of pool '${pool}' already in progress, skipping:"
;;
*"none requested"*)
echo " starting first scrub (since reboot) of pool '${pool}':"
zpool scrub ${pool}
[ $rc -eq 0 ] && rc=1
;;
*)
echo " starting scrub of pool '${pool}':"
zpool scrub ${pool}
[ $rc -eq 0 ] && rc=1
;;
esac
echo " consult 'zpool status ${pool}' for the result"
done
;;
*)
rc=0
;;
esac
exit $rc