[PATCH] Default scrub interval to whole weeks

[Xin LI]

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Hi,

I think it might be better if we set scrub interval to whole weeks
(proposed changeset changes it to 5 weeks).

The reason for this is to make it easier for system administrators to
estimate when the scrub happens, for instance, if a scrub was done on
Saturday, it always happen on Saturdays.  On large zpools, scrub can
consume a lot of time and I/O bandwidth, and having it happen on
random weekday is not a good idea.

Cheers,
- -- 
Xin LI <delphij at delphij.net>	https://www.delphij.net/
FreeBSD - The Power to Serve!		Live free or die
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-------------- next part --------------
Index: defaults/periodic.conf
===================================================================
--- defaults/periodic.conf	(revision 226850)
+++ defaults/periodic.conf	(working copy)
@@ -150,8 +150,8 @@
 # 800.scrub-zfs
 daily_scrub_zfs_enable="NO"
 daily_scrub_zfs_pools=""			# empty string selects all pools
-daily_scrub_zfs_default_threshold="30"		# days between scrubs
-#daily_scrub_zfs_${poolname}_threshold="30"	# pool specific threshold
+daily_scrub_zfs_default_threshold="35"		# days between scrubs
+#daily_scrub_zfs_${poolname}_threshold="35"	# pool specific threshold
 
 # 999.local
 daily_local="/etc/daily.local"				# Local scripts
Index: periodic/daily/800.scrub-zfs
===================================================================
--- periodic/daily/800.scrub-zfs	(revision 226850)
+++ periodic/daily/800.scrub-zfs	(working copy)
@@ -15,7 +15,7 @@
     source_periodic_confs
 fi
 
-: ${daily_scrub_zfs_default_threshold=30}
+: ${daily_scrub_zfs_default_threshold=35}
 
 case "$daily_scrub_zfs_enable" in
     [Yy][Ee][Ss])