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[Iscsitarget-commits] SF.net SVN: iscsitarget:[328] trunk
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From: <rsw...@us...> - 2010-04-13 19:37:17
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Revision: 328
http://iscsitarget.svn.sourceforge.net/iscsitarget/?rev=328&view=rev
Author: rswwalker
Date: 2010-04-13 19:37:11 +0000 (Tue, 13 Apr 2010)
Log Message:
-----------
Updated Changelog, RELEASE_NOTES, version number.
Added README about experimental MC/S support.
Signed-off-by: Ross Walker
Modified Paths:
--------------
trunk/ChangeLog
trunk/RELEASE_NOTES
trunk/include/iet_u.h
Added Paths:
-----------
trunk/README.mcs
Modified: trunk/ChangeLog
===================================================================
--- trunk/ChangeLog 2010-04-13 17:13:44 UTC (rev 327)
+++ trunk/ChangeLog 2010-04-13 19:37:11 UTC (rev 328)
@@ -1,3 +1,47 @@
+Summary of changes from v1.4.19 to v1.4.20
+=================================
+Minh Tran
+ o fix TTT for final PDU in ietd
+
+Qinghua(Kevin) Ye
+ o release reservations during session delete
+
+Ross Walker
+ o multiple updates for abort task compliance
+ o replace sync_page_range with filemap_write_and_wait_range in fileio
+ o replace do_sync_read/write with vfs_read/write in fileio
+ o multiple updates for target_del_all, atomic deletion of targets,
+ sessions and connections
+ o install moves existing kernel module, uninstall moves it back
+ o cleaned up RPM and DKMS package building
+ o cleaned up usr-kernel ioctl calls, added version checking, semaphore
+ to prevent ioctls during kernel cleanup (target_del_all)
+ o cleaned up session and connection reinstatement
+ o setup IO contexts in wthread, fixes CFQ performance problem
+ o enabled multiple connections per session
+ o moved common parameters from iotypes to volume
+ o UA handling on aborted/terminated connections
+ o removed OpenSSL dependency by borrowing kernel md5/sha1 code
+ o code cleanups
+
+Arne Redlich
+ o multiple kernel compatibility updates
+ o code cleanups
+
+Lars Ellenberg
+ o support for logical sector sizes
+ o case insensitive volume options
+ o code cleanups
+
+Luca Berra
+ o fix warnings when compiling via gcc strict checks
+
+Kun Huang
+ o temporary target redirections via ietadm for existing targets
+
+Jagadish Kumar
+ o multiple code cleanups around network and worker thread handling
+
Summary of changes from v1.4.18 to v1.4.19
=================================
Andreas Florath
Added: trunk/README.mcs
===================================================================
--- trunk/README.mcs (rev 0)
+++ trunk/README.mcs 2010-04-13 19:37:11 UTC (rev 328)
@@ -0,0 +1,32 @@
+Multiple Connections per Session
+================================
+
+Starting in 1.4.20 IET has experimental support for multiple
+connections per session (MC/S).
+
+IET always supported multiple sessions by a given initiator, but
+since SCSI command ordering can only be preserved within a session
+this meant that commands could (and over time will) be issued
+out-of-order which causes sequential operations to randomize over
+time reducing the effective throughput considerably.
+
+By utilizing multiple connections per session this eliminates the
+need to use multiple sessions and MPIO on the host system, as the
+abstraction appears to the host system as a single disk and it is
+up to the initiator to handle the distribution of SCSI commands
+over the connections of a session.
+
+It should be noted though, that on the initiator side one should
+use either MC/S OR MPIO for a target-initiator pair as on many
+operating systems the behavior is undefined when using both. Linux
+maintainers have decided to only support MPIO for it's initiators.
+Microsoft supports both, but says that using both at once on a
+given target-initiator pair is unsupported.
+
+IET being an iSCSI target really doesn't care either way, as it
+will process commands in the order per the RFC spec, but it is
+highly recommend you don't use both at once unless MPIO is used in
+a strictly active-passive fail-over fashion, while MC/S is used
+active-active, any other combination of MPIO and MC/S will most
+likely find you in trouble.
+
Modified: trunk/RELEASE_NOTES
===================================================================
--- trunk/RELEASE_NOTES 2010-04-13 17:13:44 UTC (rev 327)
+++ trunk/RELEASE_NOTES 2010-04-13 19:37:11 UTC (rev 328)
@@ -2,6 +2,64 @@
Release Notes for iSCSI Enterprise Target
=========================================
+ April 13th, 2010
+ Version 1.4.20
+ --------------
+
+The IET development team is pleased to announce the release of version
+1.4.20 of the iSCSI Enterprise Target.
+
+This release includes numerous bug fixes and compatibility improvements
+and it is highly recommended that all production servers be on this
+version for compatibility and stability reasons.
+
+We would like to thank all those that contributed for this release. As
+we are a small project we rely heavily on user contributions and we
+welcome all who wish to participate in improving IET.
+
+New since 1.4.19:
+
+New Features:
+- Added ability to atomically delete all targets/sessions/connections
+- Added ability to move existing kernel module on install and move
+ back on uninstall per distribution requirements (dpkg-divert)
+- Added support for logical sector sizes (512, 1024, 2048, 4096)
+ and devices whose native sector size > 512
+- Added case insensitive volume parameter processing
+- Added ability to set temporary target redirections via ietadm
+ for existing targets
+- Added support for auto-generating MD5 hash for SCSI ID, if not
+ specified, and auto-setting SCSI SN to the hex of the SCSI ID,
+ if not specified.
+
+Experimental Features:
+- Added experimental support for multiple connections per session
+
+Updated Features:
+- Updated kernel compatibility to 2.6.33
+- Updated RPM and DKMS build/install/maintenance handling
+- Updated kernel and usr ioctl functions to perform version checking
+ between kernel module and ietd
+
+Fixes:
+- Fixed bug in ietd text final text response
+- Fixed bug with reservation release during session deletion
+- Fixed compliance issues around ABORT TASK/ABORT TASK SET
+- Fixed fileio so it should work with all file system types
+- Fixed session and connection reinstatement to work per RFC
+- Fixed performance issue with CFQ scheduler
+- Fixed corner case with fileio_sync missing last page in a sync
+- Fixed bug in ietd where an interface without an address would
+ cause it to go into an infinite loop.
+- Fixed race condition between issuing ioctls during kernel cleanup
+- Fixed race condition between ietd shutdown and initiators which
+ would cause initiators to fail to reconnect properly
+- Fixed a race condition with data-out handling with multiple
+ connections per session
+- Fixed possible wthread lost wakeup condition when the number of
+ wthreads is less then the number of CPUs/cores.
+
+
November 15th, 2009
Version 1.4.19
--------------
@@ -68,8 +126,11 @@
Shreyansh Jain, Lars Ellenberg, Ming Zhang, Francois Micaux, Cheng Renquan,
Andreas Florath, sdrb, Xie Gang, Stefan Rubner, FUJITA Tomonori, Oliver R.,
-Matthew Wild, Kevin Ye and to all list members who submitted bug reports,
-suggestions and comments.
+Matthew Wild, Kevin Ye, Min Tran, Luca Berra, Kun Huang, VMware, spren,
+Jagadish Kumar, Steven Umbehocker, Emmanuel Florac, Harshal Shete,
+Tim Westervoorde, Andrei Tanas, Chris Siebenmann, Manoj Iyer, Rob Caldwell
+Pasi Karkkainen, Eugen Rieck and to all list members who submitted bug
+reports, suggestions and comments.
Without whose contributions IET would not have been possible.
Modified: trunk/include/iet_u.h
===================================================================
--- trunk/include/iet_u.h 2010-04-13 17:13:44 UTC (rev 327)
+++ trunk/include/iet_u.h 2010-04-13 19:37:11 UTC (rev 328)
@@ -1,7 +1,7 @@
#ifndef _IET_U_H
#define _IET_U_H
-#define IET_VERSION_STRING "1.4.19"
+#define IET_VERSION_STRING "1.4.20"
/* The maximum length of 223 bytes in the RFC. */
#define ISCSI_NAME_LEN 256
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