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authorBrian Behlendorf <[email protected]>2015-09-01 09:45:10 -0700
committerBrian Behlendorf <[email protected]>2015-09-02 09:30:18 -0700
commit6cde64351e236712a17d41c1578d5843a0f006e4 (patch)
treedf0cd30d4d2db2daa46e7d95ce47642d2c81a751 /module/zfs/spa_misc.c
parent3f1cc17c9005d19faba91fe7236332ed502b1a3f (diff)
Add spa_slop_shift module option
Allow for easy turning of a pools reserved free space. Previous versions of ZFS (v0.6.4 and earlier) held 1/64 of the pools capacity in reserve. Commits 3d45fdd and 0c60cc3 increased this to 1/32. Setting spa_slop_shift=6 will restore the previous default setting. Signed-off-by: Brian Behlendorf <[email protected]> Closes #3724
Diffstat (limited to 'module/zfs/spa_misc.c')
-rw-r--r--module/zfs/spa_misc.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/module/zfs/spa_misc.c b/module/zfs/spa_misc.c
index ad9f9fe28..409dce121 100644
--- a/module/zfs/spa_misc.c
+++ b/module/zfs/spa_misc.c
@@ -2094,4 +2094,7 @@ MODULE_PARM_DESC(zfs_deadman_enabled, "Enable deadman timer");
module_param(spa_asize_inflation, int, 0644);
MODULE_PARM_DESC(spa_asize_inflation,
"SPA size estimate multiplication factor");
+
+module_param(spa_slop_shift, int, 0644);
+MODULE_PARM_DESC(spa_slop_shift, "Reserved free space in pool");
#endif