os/FileStore: initialize blk_size on _detect_fs()

This was missed by a25d73effb38118602bc73da0aa258c639f69c2c.

Signed-off-by: Sage Weil <sage@inktank.com>

diff --git a/src/os/FileStore.cc b/src/os/FileStore.cc
index a84cc69858ce0f58b2a4143c813baa3a859fe34c..80561056daabb82ab6d9ab51f1d085a8d7aaf5ed 100644 (file)
--- a/src/os/FileStore.cc
+++ b/src/os/FileStore.cc
@@ -788,6 +788,8 @@ int FileStore::_detect_fs()
   if (r < 0)
     return -errno;
 
+  blk_size = st.f_bsize;
+
 #if defined(__linux__)
   if (st.f_type == BTRFS_SUPER_MAGIC) {
     dout(0) << "mount detected btrfs" << dendl;