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manpage: update mount.cifs manpage with info about default version being mounted

PATCH Superseded Jeff Layton 2 participants 4 messages Oct 31, 2017 – Nov 4, 2017 3 messages not in the archive

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PATCH v2 1/1 manpage: update mount.cifs manpage with info about default version being mounted

From: Jeff Layton <[email protected]>

---
 mount.cifs.rst | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

Thanks Aurelien. I dropped Ronnie's Reviewed-by since this is a bit different. Let me know if you'd like me to add it back.

mount.cifs.rst +4 -2
index 9714f795fe76..01305df60651 100644
@@ -517,7 +517,7 @@ prefixpath=arg
 vers=arg
   SMB protocol version. Allowed values are:
 
-  - 1.0 - The classic CIFS/SMBv1 protocol. This is the default.
+  - 1.0 - The classic CIFS/SMBv1 protocol.
   - 2.0 - The SMBv2.002 protocol. This was initially introduced in
     Windows Vista Service Pack 1, and Windows Server 2008. Note that
     the initial release version of Windows Vista spoke a slightly
@@ -529,6 +529,9 @@ vers=arg
   Note too that while this option governs the protocol version used, not
   all features of each version are available.
 
+  In kernels v4.13 and later, the client and server negotiate a version greater
+  than or equal to ``2.1``. In kernels prior to v4.13, the default is ``1.0``.
+
 --verbose
   Print additional debugging information for the mount. Note that this
   parameter must be specified before the ``-o`` . For example::
@@ -857,4 +860,3 @@ Steve French
 The maintainer of the Linux cifs vfs and the userspace tool mount.cifs
 is Steve French. The Linux CIFS Mailing list is the preferred place to
 ask questions regarding these programs.
-
\ No newline at end of file
Signature · 1 line
2.13.6

A message that is not in the archive (sent off-list or not yet received): 20171031160224.12523-1-jlayton-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org

#2 lore raw

2017-10-31 9:02 GMT-07:00 Jeff Layton <[email protected]>:

Quoted 24 lines

From: Jeff Layton <[email protected]>

---
 mount.cifs.rst | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

Thanks Aurelien. I dropped Ronnie's Reviewed-by since this is a bit different. Let me know if you'd like me to add it back.

mount.cifs.rst +1 -1
index 9714f795fe76..01305df60651 100644
@@ -517,7 +517,7 @@ prefixpath=arg
 vers=arg
   SMB protocol version. Allowed values are:
 
-  - 1.0 - The classic CIFS/SMBv1 protocol. This is the default.
+  - 1.0 - The classic CIFS/SMBv1 protocol.
   - 2.0 - The SMBv2.002 protocol. This was initially introduced in
     Windows Vista Service Pack 1, and Windows Server 2008. Note that
     the initial release version of Windows Vista spoke a slightly

mount.cifs.rst vers=arg · line 534

Quoted 6 lines
mount.cifs.rst +3 -0
@@ -529,6 +529,9 @@ vers=arg
   Note too that while this option governs the protocol version used, not
   all features of each version are available.
 
+  In kernels v4.13 and later, the client and server negotiate a version greater
+  than or equal to ``2.1``. In kernels prior to v4.13, the default is ``1.0``.
+

The multi-dialect negotiation (version 2.1 and above) was added in v4.13.5 kernel. Should we mention the specific stable version in the doc?

--
Best regards,
Pavel Shilovsky

A message that is not in the archive (sent off-list or not yet received): CAKywueR4DpsM72EK6u=6PHRm+uD6m8vJWnmHfhYzUuYfFn1oNA-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org

#4 lore raw
Quoted 28 lines · Pavel Shilovsky

2017-10-31 9:02 GMT-07:00 Jeff Layton <[email protected]>:

Quoted 27 lines

From: Jeff Layton <[email protected]>

---
 mount.cifs.rst | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

Thanks Aurelien. I dropped Ronnie's Reviewed-by since this is a bit different. Let me know if you'd like me to add it back.

mount.cifs.rst +1 -1
index 9714f795fe76..01305df60651 100644
@@ -517,7 +517,7 @@ prefixpath=arg
 vers=arg
   SMB protocol version. Allowed values are:
 
-  - 1.0 - The classic CIFS/SMBv1 protocol. This is the default.
+  - 1.0 - The classic CIFS/SMBv1 protocol.
   - 2.0 - The SMBv2.002 protocol. This was initially introduced in
     Windows Vista Service Pack 1, and Windows Server 2008. Note that
     the initial release version of Windows Vista spoke a slightly
@@ -529,6 +529,9 @@ vers=arg
   Note too that while this option governs the protocol version used, not
   all features of each version are available.
 
Quoted 8 lines

mount.cifs.rst vers=arg · line 534

Quoted 3 lines
mount.cifs.rst +3 -0
+  In kernels v4.13 and later, the client and server negotiate a version greater
+  than or equal to ``2.1``. In kernels prior to v4.13, the default is ``1.0``.
+

The multi-dialect negotiation (version 2.1 and above) was added in v4.13.5 kernel. Should we mention the specific stable version in the doc?

It would be very odd to make that sort of change in a stable series kernel. What patch actually flipped the default to autonegotiate?

I was assuming that it was eef914a9eb5eb83e60eb498315a491cd1edc13a1:

    $ git tag --contains eef914a9eb5eb83e60eb498315a491cd1edc13a1 | grep v4.13$
    v4.13

git says that that commit went into v4.13. Was it a different one?

Signature · 1 line
Jeff Layton <[email protected]>

A message that is not in the archive (sent off-list or not yet received): [email protected]

#6 lore raw

2017-11-04 4:33 GMT-07:00 Jeff Layton <[email protected]>:

Quoted 41 lines · Pavel Shilovsky
Quoted 28 lines

2017-10-31 9:02 GMT-07:00 Jeff Layton <[email protected]>:

Quoted 27 lines

From: Jeff Layton <[email protected]>

---
 mount.cifs.rst | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

Thanks Aurelien. I dropped Ronnie's Reviewed-by since this is a bit different. Let me know if you'd like me to add it back.

mount.cifs.rst +1 -1
index 9714f795fe76..01305df60651 100644
@@ -517,7 +517,7 @@ prefixpath=arg
 vers=arg
   SMB protocol version. Allowed values are:
 
-  - 1.0 - The classic CIFS/SMBv1 protocol. This is the default.
+  - 1.0 - The classic CIFS/SMBv1 protocol.
   - 2.0 - The SMBv2.002 protocol. This was initially introduced in
     Windows Vista Service Pack 1, and Windows Server 2008. Note that
     the initial release version of Windows Vista spoke a slightly
@@ -529,6 +529,9 @@ vers=arg
   Note too that while this option governs the protocol version used, not
   all features of each version are available.
 
Quoted 8 lines

mount.cifs.rst vers=arg · line 534

Quoted 3 lines
mount.cifs.rst +3 -0
+  In kernels v4.13 and later, the client and server negotiate a version greater
+  than or equal to ``2.1``. In kernels prior to v4.13, the default is ``1.0``.
+

The multi-dialect negotiation (version 2.1 and above) was added in v4.13.5 kernel. Should we mention the specific stable version in the doc?

It would be very odd to make that sort of change in a stable series kernel. What patch actually flipped the default to autonegotiate?

Quoted 8 lines

I was assuming that it was eef914a9eb5eb83e60eb498315a491cd1edc13a1:

    $ git tag --contains eef914a9eb5eb83e60eb498315a491cd1edc13a1 | grep v4.13$
    v4.13

git says that that commit went into v4.13. Was it a different one? --
Jeff Layton <[email protected]>

Yes, it was 9764c02fcbad40001fd3f63558d918e4d519bb75
(https://github.com/torvalds/linux/commit/9764c02fcbad40001fd3f63558d918e4d519bb75).

The one you mentioned changed the default from vers=1.0 to vers=3.0 which broke the existing setups against SMB 1.0 only servers. It was done with subsequent auto-negotiate patch in mind. That's why the latter patch should went to v4.13.y.

--
Best regards,
Pavel Shilovsky