summaryrefslogtreecommitdiffstats
path: root/docs-xml/smbdotconf/tuning/strictsync.xml
diff options
context:
space:
mode:
Diffstat (limited to 'docs-xml/smbdotconf/tuning/strictsync.xml')
-rw-r--r--docs-xml/smbdotconf/tuning/strictsync.xml40
1 files changed, 40 insertions, 0 deletions
diff --git a/docs-xml/smbdotconf/tuning/strictsync.xml b/docs-xml/smbdotconf/tuning/strictsync.xml
new file mode 100644
index 0000000..f2e3788
--- /dev/null
+++ b/docs-xml/smbdotconf/tuning/strictsync.xml
@@ -0,0 +1,40 @@
+<samba:parameter name="strict sync"
+ context="S"
+ type="boolean"
+ xmlns:samba="http://www.samba.org/samba/DTD/samba-doc">
+ <description>
+ <para>This parameter controls whether Samba honors a request
+ from an SMB client to ensure any outstanding operating system
+ buffer contents held in memory are safely written onto stable
+ storage on disk. If set to <constant>yes</constant>, which is
+ the default, then Windows applications can force the smbd server
+ to synchronize unwritten data onto the disk. If set to
+ <constant>no</constant> then smbd will ignore client
+ requests to synchronize unwritten data onto stable storage on
+ disk.</para>
+
+ <para>In Samba 4.7.0, the default for this parameter changed from
+ <constant>no</constant> to <constant>yes</constant> to better
+ match the expectations of SMB2/3 clients and improve application
+ safety when running against smbd.</para>
+
+ <para>The flush request from SMB2/3 clients is handled
+ asynchronously inside smbd, so leaving the parameter as the default
+ value of <constant>yes</constant> does not block the processing of
+ other requests to the smbd process.</para>
+
+ <para>Legacy Windows applications (such as the Windows 98 explorer
+ shell) seemed to confuse writing buffer contents to the operating
+ system with synchronously writing outstanding data onto stable storage
+ on disk. Changing this parameter to <constant>no</constant> means that
+ <citerefentry><refentrytitle>smbd</refentrytitle>
+ <manvolnum>8</manvolnum></citerefentry> will ignore the Windows
+ applications request to synchronize unwritten data onto disk. Only
+ consider changing this if smbd is serving obsolete SMB1 Windows clients
+ prior to Windows XP (Windows 98 and below). There should be no need to
+ change this setting for normal operations.</para>
+</description>
+
+<related>sync always</related>
+<value type="default">yes</value>
+</samba:parameter>