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-rw-r--r--fs/cifs/README24
1 files changed, 20 insertions, 4 deletions
diff --git a/fs/cifs/README b/fs/cifs/README
index 34b0cf7111f..bb90941826a 100644
--- a/fs/cifs/README
+++ b/fs/cifs/README
@@ -294,8 +294,10 @@ A partial list of the supported mount options follows:
during the local client kernel build will be used.
If server does not support Unicode, this parameter is
unused.
- rsize default read size
- wsize default write size
+ rsize default read size (usually 16K)
+ wsize default write size (usually 16K, 32K is often better over GigE)
+ maximum wsize currently allowed by CIFS is 57344 (14 4096 byte
+ pages)
rw mount the network share read-write (note that the
server may still consider the share read-only)
ro mount network share read-only
@@ -407,6 +409,13 @@ A partial list of the supported mount options follows:
This has no effect if the server does not support
Unicode on the wire.
nomapchars Do not translate any of these seven characters (default).
+ nocase Request case insensitive path name matching (case
+ sensitive is the default if the server suports it).
+ nobrl Do not send byte range lock requests to the server.
+ This is necessary for certain applications that break
+ with cifs style mandatory byte range locks (and most
+ cifs servers do not yet support requesting advisory
+ byte range locks).
remount remount the share (often used to change from ro to rw mounts
or vice versa)
@@ -473,9 +482,16 @@ These experimental features and tracing can be enabled by changing flags in
kernel, e.g. insmod cifs). To enable a feature set it to 1 e.g. to enable
tracing to the kernel message log type:
- echo 1 > /proc/fs/cifs/cifsFYI
+ echo 7 > /proc/fs/cifs/cifsFYI
-and for more extensive tracing including the start of smb requests and responses
+cifsFYI functions as a bit mask. Setting it to 1 enables additional kernel
+logging of various informational messages. 2 enables logging of non-zero
+SMB return codes while 4 enables logging of requests that take longer
+than one second to complete (except for byte range lock requests).
+Setting it to 4 requires defining CONFIG_CIFS_STATS2 manually in the
+source code (typically by setting it in the beginning of cifsglob.h),
+and setting it to seven enables all three. Finally, tracing
+the start of smb requests and responses can be enabled via:
echo 1 > /proc/fs/cifs/traceSMB