removing mfd from 'closing_list' to fix ASSERTION(list_empty(&mfd->mfd_list))
in mdt_mfd_free in mdt_open.c

i=robert.read

handle 'Unexpected: can't find mdc_open_data,
but the close succeeded with replayabel imp.
Please tell http://bugzilla.lustre.org/"
printed by mdc_close in mdc_request.c

b=17089
i=johann

b=11089
i=nathan.rutman
i=adilger

per-nid client statistics for MDT.

lockdep.
b=16450

b=16450

that lu_site can be used on a client.
b=16450

b=16450

first instance of a given type is created and last one is destroyed
respectively. This is need by CLIO.
b=16450

sufficient to locate and load all object state (inode). On a client, on the
other hand, more data are necessary instantiate an object. Change
lu_object_find() and friends to take additional `lu_conf' argument describing
object.  Typically this includes layout information.
b=16450

        lu_ref fields ->l_reference and ->lr_reference are added to ldlm_lock
        and ldlm_resource. LDLM interface has to be changed, because code that
        releases a reference on a lock, has to "know" what reference this is.
        In the most frequent case

                lock = ldlm_handle2lock(handle);
                ...
                LDLM_LOCK_PUT(lock);

        no changes are required. When any other reference (received _not_ from
        ldlm_handle2lock()) is released, LDLM_LOCK_RELEASE() has to be called
        instead of LDLM_LOCK_PUT().

        Arguably, changes are pervasive, and interface requires some discipline
        for proper use. On the other hand, it was very instrumental in finding
        a few leaked lock references.
b=16450

b=16450

a=19432
i=manoj.joseph
i=vladimir.saveliev
add conf_param settings to mdd

b=17180
a=19402
i=nathan
i=johann
rename pools tests to a common base

b=17234
a=19563
i=yury.umanets
i=nathan
set pools for all MDTs for CMD

r=adilger,shadow

- various CMD related fixes.

b=16788
i=adilger
i=nathan.rutman

add per-nid statistics on HEAD.

r=adilger,robert

- fixes server side scalability issue which became visible with lru resize work landed.
It replcaes linear list of held locks on server with hash table from class_hash.c which improves lock find time drastically for case when one client holds ~limit of server locks (quite a big number for big servers) which is very possible if all clients are idle and one compiles kernel, etc.

b=16499
i=yury.umanets
i=tappro

mdt_device_sync and mdt_object_sync implementation

r=tappro,shadow

- fixes some recover-small tests

b=16704
i=yury.umanets
i=alexey.lyashkov

mdt_object_unlock didn't save PDO locks, this commit fixes it.

Branch HEAD
b=14929
i=rread
i=panda

b=16098

Add URL for GPLv2 license in copyright headers

b=16614
i=tappro
i=nikita.danilov

error cleanup for procfs stats in mdt_init0()

b=16505
i=yong.fan
i=yury.umanets

correctly handling error case if child object does not exist

b=16098

change CFS license headers to Sun headers

r=johann,shadow

- fixes wrong check for KEY_READ_ONLY in mdt_set_info().

b=15981
i=adilger
i=rread

fix code comment.

b=16205
i=johann, sheng.yang

use a macro defining ldlm timeout value on MDS.

Quiet compiler warning from casting pointer to integer of different size.
b=15981

port Adaptive Timeouts from b1_6 to HEAD.
b=14071
r=nathan
r=adilger

  i:nathan, adilger

fix sanity check in mdt_req_handle.
b=16076
r=wangdi
r=umka

r=nikita,shadow

- fixed handling for OBD_FAIL_$PREF_$OPC_NET fail_ids in mdt. Former code did not
check it correctly (due to typo with && instead of &) in mdt_req_handle() and
they all did not work. In same time, some handlers like mdt_close() and
mdt_enqueue() tried to check them again (result of some wrong fix) but again, did
it not correctly. They returned 0 error without doing anything. This should
have to emulate network failure. But as they did not allocate reply buffer and
returned 0 error, they caused rs != NULL assert in ptlrpc. Fxing this also fixed
replay-single.sh test_53* and replay_dual.sh test_12 and possibly others;

- removed checking for NET fail_id in mdt_close() and mdt_enqueue() - sources
of recent assert;

- added sanity check in mdt_req_handle() for any other invalid situation about
returning 0 error and not allocating reply buffers;

- removed mdt_reply(), move its one line call into mdt_req_handle(). This was
needed to simplify handling NET fail_ids in which case we should just return 0
and make sure that no reply is sent;

- comments and cleanups;

- in reply-dual.sh - remove test 8 from ALWAYS_EXCEPT. It passes in HEAD.
Originally for placed into ALWAYS_EXCEPT for old mds code and later moved to
HEAD test scripts but as mds in HEAD is completely new this bug is making any
sense there;

- in reply-single.sh - remove tests 0b 39 56 from ALWAYS_EXCEPT. They are
passing in HEAD. Also they are obsolete and related to closed bugs.

r=shadow,nikita
- fixes issue with accessing freed @ns on behalf rpc handling when some late rpc comes in fini time;
- add new comments in functions, converts existing ones to be inline wigth doxygen comments policies.

b=11777
r=green, shadow

invalidate the import to halt request handling so the namespace can be safely
cleaned up

b=14230
i=amit.sharma
i=manoj.joseph

umds cleanup: use libcfs kmap api rather than kernel kmap apis.

b=14230
i=alex.zhuravlev
i=h.huang

following patch removes 1.6 dead code from head branch and moves some
function to respective layers.

diffstat:

 b/lustre/include/lustre_mds.h |   70 -
 b/lustre/mdd/mdd_lov.c        |  180 ++
 b/lustre/mds/Makefile.in      |    3
 b/lustre/mds/handler.c        | 2571 ------------------------------------------
 b/lustre/mds/mds_fs.c         |  654 ----------
 b/lustre/mds/mds_internal.h   |  209 ---
 b/lustre/mds/mds_log.c        |   84 -
 b/lustre/mds/mds_lov.c        |  295 ----
 b/lustre/mdt/mdt_handler.c    |  116 +
 b/lustre/mdt/mdt_recovery.c   |   53
 lustre/mds/commit_confd.c     |   98 -
 lustre/mds/mds_join.c         |  508 --------
 lustre/mds/mds_lib.c          |  488 -------
 lustre/mds/mds_open.c         | 1533 -------------------------
 lustre/mds/mds_reint.c        | 2419 ---------------------------------------
 lustre/mds/mds_unlink_open.c  |  287 ----
 lustre/mds/mds_xattr.c        |  358 -----
 17 files changed, 369 insertions(+), 9557 deletions(-)

b=14929
i=zam
i=nikita

r=Nathan Rutman, Alexey Lyashkov

Ported the patch 'to organize the stats on per-nid basis instead of the existing per-export basis' to HEAD.
This patch also includes all its related bug fixes(bug 14016, bug 14370, bug 14873).