Default zfs_max_recordsize to 16M

Increase the default allowed maximum recordsize from 1M to 16M.
As described in the zfs(4) man page, there are significant costs
which need to be considered before using very large blocks.
However, there are scenarios where they make good sense and
it should no longer be necessary to artificially restrict their
use behind a module option.

Note that for 32-bit platforms we continue to leave this
restriction in place due to the limited virtual address space
available (256-512MB).  On these systems only a handful
of blocks could be cached at any one time severely impacting
performance and potentially stability.

Reviewed-by: Brian Behlendorf <[email protected]>
Reviewed-by: Alexander Motin <[email protected]>
Signed-off-by: Rich Ercolani <[email protected]>
Closes #12830
Closes #13302 

4 files changed, 4 insertions, 4 deletions

diff --git a/tests/zfs-tests/tests/functional/alloc_class/alloc_class_011_neg.ksh b/tests/zfs-tests/tests/functional/alloc_class/alloc_class_011_neg.ksh
index d804e5371..0be49b858 100755
--- a/tests/zfs-tests/tests/functional/alloc_class/alloc_class_011_neg.ksh
+++ b/tests/zfs-tests/tests/functional/alloc_class/alloc_class_011_neg.ksh
@@ -35,7 +35,7 @@ log_must disk_setup
 log_must zpool create $TESTPOOL raidz $ZPOOL_DISKS special mirror \
 	$CLASS_DISK0 $CLASS_DISK1
 
-for value in 256 1025 2097152
+for value in 256 1025 33554432
 do
 	log_mustnot zfs set special_small_blocks=$value $TESTPOOL
 done
diff --git a/tests/zfs-tests/tests/functional/cli_root/zfs_create/zfs_create_008_neg.ksh b/tests/zfs-tests/tests/functional/cli_root/zfs_create/zfs_create_008_neg.ksh
index a905e50df..d82f10f71 100755
--- a/tests/zfs-tests/tests/functional/cli_root/zfs_create/zfs_create_008_neg.ksh
+++ b/tests/zfs-tests/tests/functional/cli_root/zfs_create/zfs_create_008_neg.ksh
@@ -56,7 +56,7 @@ set -A args "ab" "-?" "-cV" "-Vc" "-c -V" "c" "V" "--c" "-e" "-s" \
     "-blah" "-cV 12k" "-s -cV 1P" "-sc" "-Vs 5g" "-o" "--o" "-O" "--O" \
     "-o QuOta=none" "-o quota=non" "-o quota=abcd" "-o quota=0" "-o quota=" \
     "-o ResErVaTi0n=none" "-o reserV=none" "-o reservation=abcd" "-o reserv=" \
-    "-o recorDSize=64k" "-o recordsize=2048K" "-o recordsize=2M" \
+    "-o recorDSize=64k" "-o recordsize=32768K" "-o recordsize=32M" \
     "-o recordsize=256" "-o recsize=" "-o recsize=zero" "-o recordsize=0" \
     "-o mountPoint=/tmp/tmpfile$$" "-o mountpoint=non0" "-o mountpoint=" \
     "-o mountpoint=LEGACY" "-o mounpoint=none" \
diff --git a/tests/zfs-tests/tests/functional/cli_root/zfs_set/zfs_set_001_neg.ksh b/tests/zfs-tests/tests/functional/cli_root/zfs_set/zfs_set_001_neg.ksh
index 5cfaec55e..e58fe9bfe 100755
--- a/tests/zfs-tests/tests/functional/cli_root/zfs_set/zfs_set_001_neg.ksh
+++ b/tests/zfs-tests/tests/functional/cli_root/zfs_set/zfs_set_001_neg.ksh
@@ -78,7 +78,7 @@ while (( i < ${#dataset[@]} )); do
 		(( j += 1 ))
 	done
 	# Additional recordsize
-	set_n_check_prop "2048K" "recordsize" "${dataset[i]}" false
+	set_n_check_prop "32768K" "recordsize" "${dataset[i]}" false
 	set_n_check_prop "128B" "recordsize" "${dataset[i]}" false
 	(( i += 1 ))
 done
diff --git a/tests/zfs-tests/tests/functional/cli_root/zpool_create/zpool_create_023_neg.ksh b/tests/zfs-tests/tests/functional/cli_root/zpool_create/zpool_create_023_neg.ksh
index f101521bd..780cf86d6 100755
--- a/tests/zfs-tests/tests/functional/cli_root/zpool_create/zpool_create_023_neg.ksh
+++ b/tests/zfs-tests/tests/functional/cli_root/zpool_create/zpool_create_023_neg.ksh
@@ -52,7 +52,7 @@ log_onexit cleanup
 
 set -A args "QuOta=none" "quota=non" "quota=abcd" "quota=0" "quota=" \
     "ResErVaTi0n=none" "reserV=none" "reservation=abcd" "reserv=" \
-    "recorDSize=64k" "recordsize=2M" "recordsize=2048K" \
+    "recorDSize=64k" "recordsize=32M" "recordsize=32768K" \
     "recordsize=256" "recsize=" "recsize=zero" "recordsize=0" \
     "mountPoint=/tmp/tmpfile$$" "mountpoint=non0" "mountpoint=" \
     "mountpoint=LEGACY" "mounpoint=none" \