doc/start/os-recommendations: drop ancient 'syncfs' note

...and with it it's mention of ext4.

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

diff --git a/doc/start/os-recommendations.rst b/doc/start/os-recommendations.rst
index 97d74317b52bd3cd82252b0d2e5122d3faf98757..40b5ff6e53924d9d5738e22ae3836d49d61b3571 100644 (file)
--- a/doc/start/os-recommendations.rst
+++ b/doc/start/os-recommendations.rst
@@ -84,8 +84,6 @@ Firefly (0.80)
 +----------+----------+--------------------+--------------+---------+------------+
 | CentOS   | 7        | N/A                | linux-3.10.0 |         | B          |
 +----------+----------+--------------------+--------------+---------+------------+
-| Debian   | 6.0      | Squeeze            | linux-2.6.32 | 1, 2, 3 | B          |
-+----------+----------+--------------------+--------------+---------+------------+
 | Debian   | 7.0      | Wheezy             | linux-3.2.0  | 1, 2    | B          |
 +----------+----------+--------------------+--------------+---------+------------+
 | Fedora   | 19       | Schrödinger's Cat  | linux-3.10.0 |         | B          |
@@ -106,17 +104,12 @@ Notes
 
 - **1**: The default kernel has an older version of ``btrfs`` that we do not
   recommend for ``ceph-osd`` storage nodes.  Upgrade to a recommended
-  kernel or use ``XFS`` or ``ext4``.
+  kernel or use ``XFS``.
 
 - **2**: The default kernel has an old Ceph client that we do not recommend
   for kernel client (kernel RBD or the Ceph file system).  Upgrade to a
   recommended kernel.
 
-- **3**: The default kernel or installed version of ``glibc`` does not
-  support the ``syncfs(2)`` system call.  Putting multiple
-  ``ceph-osd`` daemons using ``XFS`` or ``ext4`` on the same host will
-  not perform as well as they could.
-
 
 Testing
 -------