The Samba-Bugzilla – Attachment 11924 Details for
Bug 11796
smb3 multi-channel enablement switch missing
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[patch]
whatsnew patch, for completeness
whatsnew.mc.v4-4-test.patch (text/plain), 2.76 KB, created by
Michael Adam
on 2016-03-15 21:03:37 UTC
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Description:
whatsnew patch, for completeness
Filename:
MIME Type:
Creator:
Michael Adam
Created:
2016-03-15 21:03:37 UTC
Size:
2.76 KB
patch
obsolete
>From 15c37d6812088020d9d14355fc699788a5dc7b86 Mon Sep 17 00:00:00 2001 >From: Michael Adam <obnox@samba.org> >Date: Tue, 15 Mar 2016 21:56:44 +0100 >Subject: [PATCH] WHATSNEW: document the experimental smb3-multi-channel > feature > >Signed-off-by: Michael Adam <obnox@samba.org> >--- > WHATSNEW.txt | 49 +++++++++++++++++++++++++++++++++++++++++++++++++ > 1 file changed, 49 insertions(+) > >diff --git a/WHATSNEW.txt b/WHATSNEW.txt >index 7011c12..6dd74ae 100644 >--- a/WHATSNEW.txt >+++ b/WHATSNEW.txt >@@ -189,6 +189,53 @@ CTDB changes > * All CTDB current manual pages are now correctly installed > > >+EXPERIMENTAL FEATURES >+===================== >+ >+SMB3 Multi-Channel >+------------------ >+ >+Samba 4.4.0 adds *experimental* support for SMB3 Multi-Channel. >+Multi-Channel is an SMB3 protocol feature that allows the client >+to bind multiple transport connections into one authenticated >+SMB session. This allows for increased fault tolerance and >+throughput. The client chooses transport connections as reported >+by the server and also chooses over which of the bound transport >+connections to send traffic. I/O operations for a given file >+handle can span multiple network connections this way. >+An SMB multi-channel session will be valid as long as at least >+one of its channels are up. >+ >+In Samba, multi-channel can be enabled by setting the new >+smb.conf option "server multi channel support" to "yes". >+It is disabled by default. >+ >+Samba has to report interface speeds and some capabilities to >+the client. On Linux, Samba can auto-detect the speed of an >+interface. But to support other platforms, and in order to be >+able to manually override the detected values, the "interfaces" >+smb.conf option has been given an extended syntax, by which an >+interface specification can additionally carry speed and >+capability information. The extended syntax looks like this >+for setting the speed to 1 gigabit per second: >+ >+ interfaces = 192.168.1.42;speed=1000000000 >+ >+This extension should be used with care and are mainly intended >+for testing. See the smb.conf manual page for details. >+ >+CAVEAT: While this should be working without problems mostly, >+there are still corner cases in the treatment of channel failures >+that may result in DATA CORRUPTION when these race conditions hit. >+It is hence >+ >+ NOT RECOMMENDED TO USE MULTI-CHANNEL IN PRODUCTION >+ >+at this stage. This situation can be expected to improve during >+the life-time of the 4.4 release. Feed-back from test-setups is >+highly welcome. >+ >+ > REMOVED FEATURES > ================ > >@@ -228,6 +275,8 @@ smb.conf changes > -------------- ----------- ------- > aio max threads New 100 > ldap page size Changed default 1000 >+ server multi channel support New No >+ interfaces Extended syntax > > > KNOWN ISSUES >-- >2.5.0 >
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