Implement write lock prioritisation for file locking and make it default.

1 files changed, 7 insertions, 0 deletions

diff --git a/doc/example.conf b/doc/example.conf
index 5bb20722..eaf922ba 100644
--- a/doc/example.conf
+++ b/doc/example.conf
@@ -288,6 +288,13 @@ global {
     # in progress.  A directory like /tmp that may get wiped on reboot is OK.
     locking_dir = "/var/lock/lvm"
 
+    # Whenever a read-only and read-write access compete on a single volume
+    # group, ensure that the write lock gets priority over the read lock.
+    # Without this setting, write access may be stalled by high volume of
+    # read-only traffic on LVM metadata. NB. This option only affects
+    # locking_type = 1, i.e. local file-based locking.
+    prioritise_write_locks = 1
+
     # Other entries can go here to allow you to load shared libraries
     # e.g. if support for LVM1 metadata was compiled as a shared library use
     #   format_libraries = "liblvm2format1.so"