ceph/doc/changelog/v0.67.8.txt

commit ffc58b4ea6a3ea10e91050aaa28d14d87dea5656 (tag: refs/tags/v0.67.8, refs/remotes/gh/dumpling)
Author: Jenkins <jenkins@inktank.com>
Date:   Thu May 1 11:18:24 2014 +0000

    0.67.8

commit 4b16b70c53be83481efefcf394eca99c73bb9805
Merge: 5a6b351 fb0944e
Author: Sage Weil <sage@inktank.com>
Date:   Wed Apr 30 15:15:48 2014 -0700

    Merge pull request #1743 from ceph/wip-mon-backports.dumpling
    
    mon: OSDMonitor: HEALTH_WARN on 'mon osd down out interval == 0'
    
    Reviewed-by: Sage Weil <sage@inktank.com>

commit fb0944e22acf6f8b6cefb59cc4c41dc48087bfd7
Author: Joao Eduardo Luis <joao.luis@inktank.com>
Date:   Wed Apr 30 17:13:30 2014 +0100

    mon: OSDMonitor: HEALTH_WARN on 'mon osd down out interval == 0'
    
    A 'status' or 'health' request will return a HEALTH_WARN whenever the
    monitor handling the request has the option set to zero.
    
    Fixes: 7784
    
    Signed-off-by: Joao Eduardo Luis <joao.luis@inktank.com>
    (cherry picked from commit b2112d5087b449d3b019678cb266ff6fa897897e)

commit 5a6b35160417423db7c6ff892627f084ab610dfe
Author: Sandon Van Ness <sandon@inktank.com>
Date:   Tue Mar 4 16:15:15 2014 -0800

    Make symlink  of librbd to qemu's folder so it can detect it.
    
    Per issue #7293.
    
    Signed-off-by: Sandon Van Ness <sandon@inktank.com>
    (cherry picked from commit 65f3354903fdbdb81468a84b8049ff19c00f91ba)

commit 735a90a95eea01dbcce5026758895117c2842627
Author: Yehuda Sadeh <yehuda@inktank.com>
Date:   Fri Apr 25 14:11:27 2014 -0700

    rgw: fix url escaping
    
    Fixes: #8202
    This fixes the radosgw side of issue #8202. Needed to cast value
    to unsigned char, otherwise it'd get padded.
    
    Backport: dumpling
    
    Signed-off-by: Yehuda Sadeh <yehuda@inktank.com>
    (cherry picked from commit bcf92c496aba0dfde432290fc2df5620a2767313)

commit 438b57890dfce04226d769389a601d35b74e11fe
Merge: c049967 476b929
Author: Sage Weil <sage@inktank.com>
Date:   Fri Apr 25 16:00:24 2014 -0700

    Merge pull request #1700 from xanpeng/patch-1
    
    Fix error in mkcephfs.rst
    
    Signed-off-by: Xan Peng <xanpeng@gmail.com>
    Reviewed-by: Sage Weil <sage@inktank.com>

commit 476b929ecc5b7351a5be3024817b900976a90a3e
Author: xanpeng <xanpeng@gmail.com>
Date:   Mon Apr 21 11:30:42 2014 +0800

    Update mkcephfs.rst
    
    There should be no blank between mount options.

commit c049967af829497f8a62e0cbbd6031f85ead8a59
Author: Josh Durgin <josh.durgin@inktank.com>
Date:   Tue Apr 1 17:27:01 2014 -0700

    auth: add rwlock to AuthClientHandler to prevent races
    
    For cephx, build_authorizer reads a bunch of state (especially the
    current session_key) which can be updated by the MonClient. With no
    locks held, Pipe::connect() calls SimpleMessenger::get_authorizer()
    which ends up calling RadosClient::get_authorizer() and then
    AuthClientHandler::bulid_authorizer(). This unsafe usage can lead to
    crashes like:
    
    Program terminated with signal 11, Segmentation fault.
    0x00007fa0d2ddb7cb in ceph::buffer::ptr::release (this=0x7f987a5e3070) at common/buffer.cc:370
    370 common/buffer.cc: No such file or directory.
    in common/buffer.cc
    (gdb) bt
    0x00007fa0d2ddb7cb in ceph::buffer::ptr::release (this=0x7f987a5e3070) at common/buffer.cc:370
    0x00007fa0d2ddec00 in ~ptr (this=0x7f989c03b830) at ./include/buffer.h:171
    ceph::buffer::list::rebuild (this=0x7f989c03b830) at common/buffer.cc:817
    0x00007fa0d2ddecb9 in ceph::buffer::list::c_str (this=0x7f989c03b830) at common/buffer.cc:1045
    0x00007fa0d2ea4dc2 in Pipe::connect (this=0x7fa0c4307340) at msg/Pipe.cc:907
    0x00007fa0d2ea7d73 in Pipe::writer (this=0x7fa0c4307340) at msg/Pipe.cc:1518
    0x00007fa0d2eb44dd in Pipe::Writer::entry (this=<value optimized out>) at msg/Pipe.h:59
    0x00007fa0e0f5f9d1 in start_thread (arg=0x7f987a5e4700) at pthread_create.c:301
    0x00007fa0de560b6d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:115
    
    and
    
    Error in `qemu-system-x86_64': invalid fastbin entry (free): 0x00007ff12887ff20
    *** ======= Backtrace: =========
    /lib/x86_64-linux-gnu/libc.so.6(+0x80a46)[0x7ff3dea1fa46]
    /usr/lib/librados.so.2(+0x29eb03)[0x7ff3e3d43b03]
    /usr/lib/librados.so.2(_ZNK9CryptoKey7encryptEP11CephContextRKN4ceph6buffer4listERS4_RSs+0x71)[0x7ff3e3d42661]
    /usr/lib/librados.so.2(_Z21encode_encrypt_enc_blIN4ceph6buffer4listEEvP11CephContextRKT_RK9CryptoKeyRS2_RSs+0xfe)[0x7ff3e3d417de]
    /usr/lib/librados.so.2(_Z14encode_encryptIN4ceph6buffer4listEEiP11CephContextRKT_RK9CryptoKeyRS2_RSs+0xa2)[0x7ff3e3d41912]
    /usr/lib/librados.so.2(_ZN19CephxSessionHandler12sign_messageEP7Message+0x242)[0x7ff3e3d40de2]
    /usr/lib/librados.so.2(_ZN4Pipe6writerEv+0x92b)[0x7ff3e3e61b2b]
    /usr/lib/librados.so.2(_ZN4Pipe6Writer5entryEv+0xd)[0x7ff3e3e6c7fd]
    /lib/x86_64-linux-gnu/libpthread.so.0(+0x7f8e)[0x7ff3ded6ff8e]
    /lib/x86_64-linux-gnu/libc.so.6(clone+0x6d)[0x7ff3dea99a0d]
    
    Fix this by adding an rwlock to AuthClientHandler. A simpler fix would
    be to move RadosClient::get_authorizer() into the MonClient() under
    the MonClient lock, but this would not catch all uses of other
    Authorizer, e.g. for verify_authorizer() and it would serialize
    independent connection attempts.
    
    This mainly matters for cephx, but none and unknown can have the
    global_id reset as well.
    
    Partially-fixes: #6480
    Backport: dumpling, emperor
    Signed-off-by: Josh Durgin <josh.durgin@inktank.com>
    (cherry picked from commit 2cc76bcd12d803160e98fa73810de2cb916ef1ff)

commit 2b4b00b76b245b1ac6f95e4537b1d1a4656715d5
Author: Josh Durgin <josh.durgin@inktank.com>
Date:   Tue Apr 1 11:37:29 2014 -0700

    pipe: only read AuthSessionHandler under pipe_lock
    
    session_security, the AuthSessionHandler for a Pipe, is deleted and
    recreated while the pipe_lock is held. read_message() is called
    without pipe_lock held, and examines session_security. To make this
    safe, make session_security a shared_ptr and take a reference to it
    while the pipe_lock is still held, and use that shared_ptr in
    read_message().
    
    This may have caused crashes like:
    
    *** Error in `qemu-system-x86_64': invalid fastbin entry (free): 0x00007f42a4002de0 ***
    ======= Backtrace: =========
    /lib/x86_64-linux-gnu/libc.so.6(+0x80a46)[0x7f452f1f3a46]
    /usr/lib/x86_64-linux-gnu/libnss3.so(PK11_FreeSymKey+0xa8)[0x7f452e72ff98]
    /usr/lib/librados.so.2(+0x2a18cd)[0x7f453451a8cd]
    /usr/lib/librados.so.2(_ZNK9CryptoKey7encryptEP11CephContextRKN4ceph6buffer4listERS4_RSs+0x71)[0x7f4534519421]
    /usr/lib/librados.so.2(_Z21encode_encrypt_enc_blIN4ceph6buffer4listEEvP11CephContextRKT_RK9CryptoKeyRS2_RSs+0xfe)[0x7f453451859e]
    /usr/lib/librados.so.2(_Z14encode_encryptIN4ceph6buffer4listEEiP11CephContextRKT_RK9CryptoKeyRS2_RSs+0xa2)[0x7f45345186d2]
    /usr/lib/librados.so.2(_ZN19CephxSessionHandler23check_message_signatureEP7Message+0x246)[0x7f4534516866]
    /usr/lib/librados.so.2(_ZN4Pipe12read_messageEPP7Message+0xdcc)[0x7f453462ecbc]
    /usr/lib/librados.so.2(_ZN4Pipe6readerEv+0xa5c)[0x7f453464059c]
    /usr/lib/librados.so.2(_ZN4Pipe6Reader5entryEv+0xd)[0x7f4534643ecd]
    /lib/x86_64-linux-gnu/libpthread.so.0(+0x7f8e)[0x7f452f543f8e]
    /lib/x86_64-linux-gnu/libc.so.6(clone+0x6d)[0x7f452f26da0d]
    
    Partially-fixes: #6480
    Backport: dumpling, emperor
    Signed-off-by: Josh Durgin <josh.durgin@inktank.com>
    (cherry picked from commit 1d74170a4c252f35968ccfbec8e432582e92f638)

commit 48895a46015c9d6d67543816f5a400c21aa206b1 (refs/remotes/gh/wip-objectcacher-flusher-dumpling)
Author: Sage Weil <sage@inktank.com>
Date:   Fri Jan 3 12:51:15 2014 -0800

    osdc/ObjectCacher: back off less during flush
    
    In cce990efc8f2a58c8d0fa11c234ddf2242b1b856 we added a limit to avoid
    holding the lock for too long.  However, if we back off, we currently
    wait for a full second, which is probably a bit much--we really just want
    to give other threads a chance.
    
    Backport: emperor
    Signed-off-by: Sage Weil <sage@inktank.com>
    (cherry picked from commit e2ee52879e9de260abbf5eacbdabbd71973a6a83)

commit f3b5ba6f25010291a2918bdd286f1b39570bb907
Author: Sage Weil <sage@inktank.com>
Date:   Tue Oct 1 09:28:29 2013 -0700

    osdc/ObjectCacher: limit writeback IOs generated while holding lock
    
    While analyzing a log from Mike Dawson I saw a long stall while librbd's
    objectcacher was starting lots (many hundreds) of IOs.  Limit the amount of
    time we spend doing this at a time to allow IO replies to be processed so
    that the cache remains responsive.
    
    I'm not sure this warrants a tunable (which we would need to add for both
    libcephfs and librbd).
    
    Signed-off-by: Sage Weil <sage@inktank.com>
    (cherry picked from commit cce990efc8f2a58c8d0fa11c234ddf2242b1b856)

commit 06f27fc6446d47b853208357ec4277c5dc10d9fe
Author: Sage Weil <sage@inktank.com>
Date:   Tue Apr 8 10:52:43 2014 -0700

    os/FileStore: reset journal state on umount
    
    We observed a sequence like:
    
     - replay journal
       - sets JournalingObjectStore applied_op_seq
     - umount
     - mount
       - initiate commit with prevous applied_op_seq
     - replay journal
       - commit finishes
       - on replay commit, we fail assert op > committed_seq
    
    Although strictly speaking the assert failure is harmless here, in general
    we should not let state leak through from a previous mount into this
    mount or else assertions are in general more difficult to reason about.
    
    Fixes: #8019
    Signed-off-by: Sage Weil <sage@inktank.com>
    (cherry picked from commit 4de49e8676748b6ab4716ff24fd0a465548594fc)

commit b29238729f87c73dfdcf16dddcf293577678dea2
Author: Yehuda Sadeh <yehuda@inktank.com>
Date:   Tue Nov 5 14:54:20 2013 -0800

    rgw: deny writes to a secondary zone by non-system users
    
    Fixes: #6678
    We don't want to allow regular users to write to secondary zones,
    otherwise we'd end up with data inconsistencies.
    
    Signed-off-by: Yehuda Sadeh <yehuda@inktank.com>
    (cherry picked from commit 6961b5254f16ac3362c3a51f5490328d23640dbf)
    
    Conflicts:
    	src/rgw/rgw_rados.h

commit 051a17eb008d75aa6b0737873318a2e7273501ab
Author: Sage Weil <sage@inktank.com>
Date:   Sat Apr 5 16:58:55 2014 -0700

    mon: wait for quorum for MMonGetVersion
    
    We should not respond to checks for map versions when we are in the
    probing or electing states or else clients will get incorrect results when
    they ask what the latest map version is.
    
    Fixes: #7997
    Signed-off-by: Sage Weil <sage@inktank.com>
    (cherry picked from commit 67fd4218d306c0d2c8f0a855a2e5bf18fa1d659e)

commit 0716516da05eee967796fb71eb2f85c86afc40f1
Author: Yehuda Sadeh <yehuda@inktank.com>
Date:   Wed Feb 19 08:59:07 2014 -0800

    rgw: fix swift range response
    
    Fixes: #7099
    Backport: dumpling
    The range response header was broken in swift.
    
    Reported-by: Julien Calvet <julien.calvet@neurea.com>
    Signed-off-by: Yehuda Sadeh <yehuda@inktank.com>
    (cherry picked from commit 0427f61544529ab4e0792b6afbb23379fe722de1)

commit 94a1deefcfe525a7e698a1ae70a3bb561b6157de
Author: Yehuda Sadeh <yehuda@inktank.com>
Date:   Fri Nov 22 15:41:49 2013 -0800

    rgw: don't log system requests in usage log
    
    Fixes: 6889
    System requets should not be logged in the usage log.
    
    Signed-off-by: Yehuda Sadeh <yehuda@inktank.com>
    (cherry picked from commit 42ef8ba543c7bf13c5aa3b6b4deaaf8a0f9c58b6)

commit 23fed8fc427e7077c61f86168a42f61a5f73867d
Author: Greg Farnum <greg@inktank.com>
Date:   Fri Apr 4 16:06:05 2014 -0700

    OSD: _share_map_outgoing whenever sending a message to a peer
    
    This ensures that they get new maps before an op which requires them (that
    they would then request from the monitor).
    
    Signed-off-by: Greg Farnum <greg@inktank.com>
    (cherry picked from commit 232ac1a52a322d163d8d8dbc4a7da4b6a9acb709)

commit c45e15fd5cbe57a34c743b2835ecc30ee5a43963
Author: Xihui He <xihuihe@gmail.com>
Date:   Mon Dec 30 12:04:10 2013 +0800

    msgr: fix rebind() race
    stop the accepter and mark all pipes down before rebind to avoid race
    
    Fixes: #6992
    
    Signed-off-by: Xihui He xihuihe@gmail.com
    (cherry picked from commit f8e413f9c79a3a2a12801f5f64a2f612de3f06a0)

commit 3d31cf012a59e1fea8080b13bdc06c9021ba0656
Author: Samuel Just <sam.just@inktank.com>
Date:   Tue Nov 26 13:20:21 2013 -0800

    PG: retry GetLog() each time we get a notify in Incomplete
    
    If for some reason there are no up OSDs in the history which
    happen to have usable copies of the pg, it's possible that
    there is a usable copy elsewhere on the cluster which will
    become known to the primary if it waits.
    
    Fixes: #6909
    Signed-off-by: Samuel Just <sam.just@inktank.com>
    Reviewed-by: Greg Farnum <greg@inktank.com>
    Reviewed-by: Sage Weil <sage@inktank.com>
    (cherry picked from commit 964c8e978f86713e37a13b4884a6c0b9b41b5bae)

commit 1f80bbdf45439c7224ed52e4956973fc6d007848
Author: Sage Weil <sage@inktank.com>
Date:   Mon Mar 17 15:37:44 2014 -0700

    os/FileJournal: return errors on make_writeable() if reopen fails
    
    This is why #7738 is resulting in a crash instead of an error.
    
    Signed-off-by: Sage Weil <sage@inktank.com>
    (cherry picked from commit aed074401d2834a5b04edd1b7f6b4f36336f6293)

commit 62d942294a54208cdc82aebf8b536d164cae5dc6
Author: Sage Weil <sage@inktank.com>
Date:   Mon Mar 17 16:21:17 2014 -0700

    mon/Paxos: commit only after entire quorum acks
    
    If a subset of the quorum accepts the proposal and we commit, we will start
    sharing the new state.  However, the mon that didn't yet reply with the
    accept may still be sharing the old and stale value.
    
    The simplest way to prevent this is not to commit until the entire quorum
    replies.  In the general case, there are no failures and this is just fine.
    In the failure case, we will call a new election and have a smaller quorum
    of (live) nodes and will recommit the same value.
    
    A more performant solution would be to have a separate message invalidate
    the old state and commit once we have all invalidations and a majority of
    accepts.  This will lower latency a bit in the non-failure case, but not
    change the failure case significantly.  Later!
    
    Fixes: #7736
    Signed-off-by: Sage Weil <sage@inktank.com>
    Reviewed-by: Joao Eduardo Luis <joao.luis@inktank.com>
    Reviewed-by: Greg Farnum <greg@inktank.com>
    (cherry picked from commit fa1d957c115a440e162dba1b1002bc41fc1eac43)

commit 2160c72b393893896be581e89a42c4e37b79cb23
Author: Samuel Just <sam.just@inktank.com>
Date:   Thu Mar 13 14:04:19 2014 -0700

    PrioritizedQueue: cap costs at max_tokens_per_subqueue
    
    Otherwise, you can get a recovery op in the queue which has a cost
    higher than the max token value.  It won't get serviced until all other
    queues also do not have enough tokens and higher priority queues are
    empty.
    
    Fixes: #7706
    Signed-off-by: Samuel Just <sam.just@inktank.com>
    (cherry picked from commit 2722a0a487e77ea2aa0d18caec0bdac50cb6a264)

commit 1dd42e0f75fe1f5363f92bd5a4506812e54b8fb5
Author: Dan Mick <dan.mick@inktank.com>
Date:   Thu Apr 3 13:59:59 2014 -0700

    Fix byte-order dependency in calculation of initial challenge
    
    Fixes: #7977
    Signed-off-by: Dan Mick <dan.mick@inktank.com>
    Reviewed-by: Sage Weil <sage@inktank.com>
    (cherry picked from commit 4dc62669ecd679bc4d0ef2b996b2f0b45b8b4dc7)

commit c66b61f9dcad217429e4876d27881d9fb2e7666f
Author: Josh Durgin <josh.durgin@inktank.com>
Date:   Tue Dec 31 17:00:06 2013 -0800

    rbd: return 0 and an empty list when pool is entirely empty
    
    rbd_list will return -ENOENT when no rbd_directory object
    exists. Handle this in the cli tool and interpret it as success with
    an empty list.
    
    Add this to the release notes since it changes command line behavior.
    
    Fixes: #6693
    Signed-off-by: Josh Durgin <josh.durgin@inktank.com>
    (cherry picked from commit ac547a5b7dc94282f079aef78e66348d99d9d5e9)
    
    Conflicts:
    	PendingReleaseNotes
    	src/rbd.cc

commit 60b7aa96abfe09f7e9a263fa3f9b72c556dee8cb
Author: Josh Durgin <josh.durgin@inktank.com>
Date:   Wed Nov 20 18:35:34 2013 -0800

    test: use older names for module setup/teardown
    
    setUp and tearDown require nosetests 0.11, but 0.10.4 is the latest on
    centos. Rename to use the older aliases, which still work with newer
    versions of nosetests as well.
    
    Fixes: #6368
    Signed-off-by: Josh Durgin <josh.durgin@inktank.com>
    Reviewed-by: Dan Mick <dan.mick@inktank.com>
    (cherry picked from commit f753d56a9edba6ce441520ac9b52b93bd8f1b5b4)

commit b405bfa49ec31f0c6d8636c4bdde17ee1f81deb7
Author: Samuel Just <sam.just@inktank.com>
Date:   Sun Nov 3 11:06:10 2013 -0800

    OSD: don't clear peering_wait_for_split in advance_map()
    
    I really don't know why I added this...  Ops can be discarded from the
    waiting_for_pg queue if we aren't primary simply because there must have
    been an exchange of peering events before subops will be sent within a
    particular epoch.  Thus, any events in the waiting_for_pg queue must be
    client ops which should only be seen by the primary.  Peering events, on
    the other hand, should only be discarded if we are in a new interval,
    and that check might as well be performed in the peering wq.
    
    Fixes: #6681
    Signed-off-by: Samuel Just <sam.just@inktank.com>
    Reviewed-by: Greg Farnum <greg@inktank.com>
    (cherry picked from commit 9ab513334c7ff9544bac07bd420c6d5d200cf535)

commit a498c940bd630cb103d17ad8532a11122439411d
Merge: 225fc97 80e0a0a
Author: Sage Weil <sage@inktank.com>
Date:   Wed Apr 2 12:57:30 2014 -0700

    Merge remote-tracking branch 'gh/wip-7888-dumpling' into dumpling

commit 225fc97f228490dfc13c2e4deed8fecffdb28c5e
Author: Samuel Just <sam.just@inktank.com>
Date:   Tue Nov 5 21:48:53 2013 -0800

    PG: fix operator<<,log_wierdness log bound warning
    
    Split may cause holes such that head != tail and yet
    log.empty().
    
    Fixes: #6722
    Signed-off-by: Samuel Just <sam.just@inktank.com>
    Reviewed-by: David Zafman <david.zafman@inktank.com>
    (cherry picked from commit c6826c1e8a301b2306530c6e5d0f4a3160c4e691)

commit 26eeab43f3f703a25e7ba62c75d0382d15e38263
Author: Samuel Just <sam.just@inktank.com>
Date:   Tue Nov 5 17:47:48 2013 -0800

    PGLog::rewind_divergent_log: log may not contain newhead
    
    Due to split, there may be a hole at newhead.
    
    Fixes: #6722
    Signed-off-by: Samuel Just <sam.just@inktank.com>
    Reviewed-by: David Zafman <david.zafman@inktank.com>
    (cherry picked from commit f4648bc6fec89c870e0c47b38b2f13496742b10f)

commit 040abd75ad45bbcc05b24c9dddbd2026dd35e659
Author: Sage Weil <sage@inktank.com>
Date:   Sat Mar 29 14:23:21 2014 -0700

    qa/workunits/fs/misc/layout_vxattrs: ceph.file.layout is not listed
    
    As of 08a3d6bd428c5e78dd4a10e6ee97540f66f9729c.  A similar change was made
    in the kernel.
    
    Signed-off-by: Sage Weil <sage@inktank.com>
    (cherry picked from commit 4f9f7f878953b29cd5f56a8e0834832d6e3a9cec)

commit f5aa492a338ff711f3a45e4ebbf0d6b187b5f78e
Merge: fef70cb 84cb345
Author: Sage Weil <sage@inktank.com>
Date:   Fri Mar 28 18:01:08 2014 -0700

    Merge pull request #1519 from ceph/wip-6951-dumpling
    
    rgw: reset objv tracker on bucket recreation

commit fef70cbb52cf1ad12db45998b38858d9bbc3360d
Merge: 9bfbce3 f443ff3
Author: Sage Weil <sage@inktank.com>
Date:   Fri Mar 28 17:02:39 2014 -0700

    Merge pull request #1559 from ceph/wip-7881-dumpling
    
    Wip 7881 dumpling
    
    Reviewed-by: Sage Weil <sage@inktank.com>

commit 80e0a0a8fee2f6f903f612734b2cc72eae703eae (refs/remotes/gh/wip-7888-dumpling)
Author: Sage Weil <sage@inktank.com>
Date:   Thu Mar 27 21:33:21 2014 -0700

    mon/MonClient: use keepalive2 to verify the mon session is live
    
    Verify that the mon is responding by checking the keepalive2 reply
    timestamp.  We cannot rely solely on TCP timing out and returning an
    error.
    
    Fixes: #7888
    Signed-off-by: Sage Weil <sage@inktank.com>
    (cherry picked from commit 056151a6334c054505c54e59af40f203a0721f28)

commit 8723218379e80725a449b0594a4b15eb1c236b05
Author: Sage Weil <sage@inktank.com>
Date:   Thu Mar 27 21:09:13 2014 -0700

    msgr: add KEEPALIVE2 feature
    
    This is similar to KEEPALIVE, except a timestamp is also exchanged.  It is
    sent with the KEEPALIVE, and then returned with the ACK.  The last
    received stamp is stored in the Connection so that it can be queried for
    liveness.  Since all of the users of keepalive are already regularly
    triggering a keepalive, they can check the liveness at the same time.
    
    See #7888.
    
    Signed-off-by: Sage Weil <sage@inktank.com>
    (cherry picked from commit d747d79fd5ea8662a809c5636dfd2eaaa9bf8f5d)
    
    Conflicts:
    
    	src/include/ceph_features.h

commit a2f0974f8b3567c0385494a0b2c828ade6ca8e1c
Author: Greg Farnum <greg@inktank.com>
Date:   Wed Mar 26 15:58:10 2014 -0700

    Pipe: rename keepalive->send_keepalive
    
    Signed-off-by: Greg Farnum <greg@inktank.com>
    (cherry picked from commit 38d4c71a456c1cc9a5044dbcae5378836a34484d)

commit 9bfbce30678742515025ca235c4443bb3a69199f
Author: Sage Weil <sage@inktank.com>
Date:   Wed Mar 26 21:52:00 2014 -0700

    client: pin Inode during readahead
    
    Make sure the Inode does not go away while a readahead is in progress.  In
    particular:
    
     - read_async
       - start a readahead
       - get actual read from cache, return
     - close/release
       - call ObjectCacher::release_set() and get unclean > 0, assert
    
    Fixes: #7867
    Backport: emperor, dumpling
    Signed-off-by: Sage Weil <sage@inktank.com>
    (cherry picked from commit f1c7b4ef0cd064a9cb86757f17118d17913850db)

commit 232445578a2c6d0fb974e55378057fce473095f7
Author: Sage Weil <sage@inktank.com>
Date:   Fri Mar 28 12:34:07 2014 -0700

    osdc/ObjectCacher: call read completion even when no target buffer
    
    If we do no assemble a target bl, we still want to return a valid return
    code with the number of bytes read-ahead so that the C_RetryRead completion
    will see this as a finish and call the caller's provided Context.
    
    Signed-off-by: Sage Weil <sage@inktank.com>
    (cherry picked from commit 032d4ec53e125ad91ad27ce58da6f38dcf1da92e)

commit f443ff3006d41a7b0a2d7b649e8def0ffef6df12
Author: Samuel Just <sam.just@inktank.com>
Date:   Wed Oct 30 16:54:39 2013 -0700

    PGLog: remove obsolete assert in merge_log
    
    This assert assumes that if olog.head != log.head, olog contains
    a log entry at log.head, which may not be true since pg splitting
    might have left the log with arbitrary holes.
    
    Related: 0c2769d3321bff6e85ec57c85a08ee0b8e751bcb
    Signed-off-by: Samuel Just <sam.just@inktank.com>
    Reviewed-by: Sage Weil <sage@inktank.com>
    (cherry picked from commit 353813b2e1a98901b876790c7c531f8a202c661d)

commit 636e53c0f4fc43e9bfc1c8e7214cab9e0b46a359
Author: Samuel Just <sam.just@inktank.com>
Date:   Mon Sep 30 15:54:27 2013 -0700

    PGLog: on split, leave log head alone
    
    This way last_update doesn't go backwards.
    
    Fixes: 6447
    Signed-off-by: Samuel Just <sam.just@inktank.com>
    (cherry picked from commit 0c2769d3321bff6e85ec57c85a08ee0b8e751bcb)

commit a0a560a9f04311306a9784fa3c6ea2586d637f56
Merge: 466cd53 41d5e9a
Author: Sage Weil <sage@inktank.com>
Date:   Wed Mar 26 17:18:24 2014 -0700

    Merge pull request #1539 from ceph/wip-6910-dumpling
    
    PG: don't query unfound on empty pgs

commit 41d5e9ab39e69c80bec1cb0627004c3fae6dc81d
Author: Samuel Just <sam.just@inktank.com>
Date:   Tue Nov 26 19:17:59 2013 -0800

    PG: don't query unfound on empty pgs
    
    When the replica responds, it responds with a notify
    rather than a log, which the primary then ignores since
    it is already in the peer_info map.  Rather than fix that
    we'll simply not send queries to peers we already know to
    have no unfound objects.
    
    Fixes: #6910
    Signed-off-by: Samuel Just <sam.just@inktank.com>
    Reviewed-by: Sage Weil <sage@inktank.com>
    Reviewed-by: David Zafman <david.zafman@inktank.com>
    (cherry picked from commit 838b6c8387087543ce50837277f7f6b52ae87d00)

commit 466cd536ed7e541a36d88bce43683a2d9e2ca283
Merge: 2ef0d6a c188949
Author: Sage Weil <sage@inktank.com>
Date:   Fri Mar 21 14:53:23 2014 -0700

    Merge pull request #1313 from ceph/dumpling-osd-subscribe
    
    Dumpling backport: clean up osd subscriptions

commit 2ef0d6a25bf8c0cfb38768c157c29ba52295f3ca
Merge: 77e46d0 bdd96c6
Author: Sage Weil <sage@inktank.com>
Date:   Fri Mar 21 14:52:20 2014 -0700

    Merge pull request #1485 from ceph/wip-7212.dumpling
    
    backport 7212 fixes to dumpling

commit 84cb345e4f12a9b1db5e384411492a9d88f17dd8
Author: Yehuda Sadeh <yehuda@inktank.com>
Date:   Wed Feb 19 08:11:56 2014 -0800

    rgw: reset objv tracker on bucket recreation
    
    Fixes: #6951
    If we cannot create a new bucket (as it already existed), we need to
    read the old bucket's info. However, this was failing as we were holding
    the objv tracker that we created for the bucket creation. We need to
    clear it, as subsequent read using it will fail.
    
    Signed-off-by: Yehuda Sadeh <yehuda@inktank.com>
    (cherry picked from commit 859ed33ed7f9a96f4783dfb3e130d5eb60c622dd)

commit 77e46d0d7984f2d3ee0e15f27d2961a637c20b45
Author: Samuel Just <sam.just@inktank.com>
Date:   Wed Nov 6 14:33:03 2013 -0800

    ReplicatedPG: don't skip missing if sentries is empty on pgls
    
    Formerly, if sentries is empty, we skip missing.  In general,
    we need to continue adding items from missing until we get
    to next (returned from collection_list_partial) to avoid
    missing any objects.
    
    Fixes: #6633
    Signed-off-by: Samuel Just <sam.just@inktank.com>
    Reviewed-by: David Zafman <david.zafman@inktank.com>
    (cherry picked from commit c7a30b881151e08b37339bb025789921e7115288)

commit bdd96c620f33fb8f48f30f8d543af3290e6c934a
Author: Sage Weil <sage@inktank.com>
Date:   Sat Feb 15 08:59:51 2014 -0800

    mon/Elector: bootstrap on timeout
    
    Currently if an election times out we call a new
    election.  If we have never joined a quorum, bootstrap
    instead. This is heavier weight, but captures the case
    where, during bootstrap:
    
     - a and b have learned each others' addresses
     - everybody calls an election
     - a and b form a quorum
     - c loops trying to call an election, but is ignored
       because a and b don't see its address in the monmap
    
    See logs:
      ubuntu@teuthology:/var/lib/teuthworker/archive/sage-2014-02-14_13:50:04-ceph-deploy-wip-7212-sage-b-testing-basic-plana/83194
    
    Signed-off-by: Sage Weil <sage@inktank.com>
    (cherry picked from commit a4bcb1f8129a4ece97bd3419abf1ff45d260ad8e)
    (cherry picked from commit 143ec0281aa8b640617a3fe19a430248ce3b514c)

commit 68fcc63c0423a2071b7b944ea6c3448282a78a09
Author: Sage Weil <sage@inktank.com>
Date:   Fri Feb 14 11:25:52 2014 -0800

    mon: tell MonmapMonitor first about winning an election
    
    It is important in the bootstrap case that the very first paxos round
    also codify the contents of the monmap itself in order to avoid any manner
    of confusing scenarios where subsequent elections are called and people
    try to recover and modify paxos without agreeing on who the quorum
    participants are.
    
    Signed-off-by: Sage Weil <sage@inktank.com>
    (cherry picked from commit ad7f5dd481a7f45dfe6b50d27ad45abc40950510)
    (cherry picked from commit e073a062d56099b5fb4311be2a418f7570e1ffd9)

commit a3e57b7231cb28c2e0a896f747537ebdbe3a4e96
Author: Sage Weil <sage@inktank.com>
Date:   Fri Feb 14 11:13:26 2014 -0800

    mon: only learn peer addresses when monmap == 0
    
    It is only safe to dynamically update the address for a peer mon in our
    monmap if we are in the midst of the initial quorum formation (i.e.,
    monmap.epoch == 0).  If it is a later epoch, we have formed our initial
    quorum and any and all monmap changes need to be agreed upon by the quorum
    and committed via paxos.
    
    Fixes: #7212
    Signed-off-by: Sage Weil <sage@inktank.com>
    (cherry picked from commit 7bd2104acfeff0c9aa5e648d82ed372f901f767f)
    (cherry picked from commit 1996fd89fb3165a63449b135e05841579695aabd)

commit 21ed54201bd4b0f02c07f6f96a63a5720057f011
Author: Joao Eduardo Luis <joao.luis@inktank.com>
Date:   Mon Mar 17 14:37:09 2014 +0000

    ceph.in: do not allow using 'tell' with interactive mode
    
    This avoids a lot of hassle when dealing with to whom tell each command
    on interactive mode, and even more so if multiple targets are specified.
    
    As so, 'tell' commands should be used while on interactive mode instead.
    
    Backport: dumpling,emperor
    
    Signed-off-by: Joao Eduardo Luis <joao.luis@inktank.com>
    (cherry picked from commit e39c213c1d230271d23b74086664c2082caecdb9)

commit be0205c33ccbab3b6f105bdf4da114658a981557
Author: Danny Al-Gaaf <danny.al-gaaf@bisect.de>
Date:   Wed Mar 12 22:56:44 2014 +0100

    RGWListBucketMultiparts: init max_uploads/default_max with 0
    
    CID 717377 (#1 of 1): Uninitialized scalar field (UNINIT_CTOR)
     2. uninit_member: Non-static class member "max_uploads" is not initialized
        in this constructor nor in any functions that it calls.
     4. uninit_member: Non-static class member "default_max" is not initialized
        in this constructor nor in any functions that it calls.
    
    Signed-off-by: Danny Al-Gaaf <danny.al-gaaf@bisect.de>
    (cherry picked from commit b23a141d54ffb39958aba9da7f87544674fa0e50)

commit 6c3d4fbeb9cc50eca6eba12cfe7fed64b34eec3d
Author: Sage Weil <sage@inktank.com>
Date:   Thu Mar 13 14:49:30 2014 -0700

    ceph_test_rados: wait for commit, not ack
    
    First, this is what we wanted in the first place
    
    Second, if we wait for ACK, we may look at a user_version value that is
    not stable.
    
    Fixes: #7705
    Signed-off-by: Sage Weil <sage@inktank.com>
    (cherry picked from commit f2124c5846f1e9cb44e66eb2e957b8c7df3e19f4)
    
    Conflicts:
    
    	src/test/osd/RadosModel.h

commit 2daed5ff99dab238b696da5aba3816c4f5d763e8
Author: Josh Durgin <josh.durgin@inktank.com>
Date:   Thu Mar 13 09:50:16 2014 -0700

    test-upgrade-firefly: skip watch-notify system test
    
    This also fails on mixed version clusters due to watch on a
    non-existent object returning ENOENT in firefly and 0 in dumpling.
    
    Reviewed-by: Sage Weil <sage.weil@inktank.com>
    Signed-off-by: Josh Durgin <josh.durgin@inktank.com>

commit 90a21d8cf6df5fe14b2dc9b2c175983b6bb017ce
Author: Sage Weil <sage@inktank.com>
Date:   Wed Mar 12 21:30:12 2014 -0700

    qa/workunit/rados/test-upgrade-firefly: skip watch-notify test
    
    A watch on a non-existent object now returns ENOENT in firefly; skip this
    test as it will fail on a hybrid or upgraded cluster.
    
    Signed-off-by: Sage Weil <sage@inktank.com>

commit 32fdca6d9c2e3b923db7f21568bd315ab2c1c4ad
Merge: 6700dd0 cd7986c
Author: Sage Weil <sage@inktank.com>
Date:   Tue Mar 11 21:33:40 2014 -0700

    Merge pull request #1411 from ceph/wip-7076-dumpling
    
    dumpling backport of watchers check for rbd_remove()

commit 6700dd068e236473343d15eee6307d44156958a3
Author: Ray Lv <xiangyulv@gmail.com>
Date:   Wed Feb 26 21:17:32 2014 +0800

    rgw: off-by-one in rgw_trim_whitespace()
    
    Fixes: #7543
    Backport: dumpling
    
    Reviewed-by: Yehuda Sadeh <yehuda@inktank.com>
    Signed-off-by: Ray Lv <raylv@yahoo-inc.com>
    (cherry picked from commit 195d53a7fc695ed954c85022fef6d2a18f68fe20)

commit cd7986caf6baee5f9d6498b113b3382e66dd6f77
Author: Ilya Dryomov <ilya.dryomov@inktank.com>
Date:   Wed Jan 29 16:12:01 2014 +0200

    rbd: check for watchers before trimming an image on 'rbd rm'
    
    Check for watchers before trimming image data to try to avoid getting
    into the following situation:
    
      - user does 'rbd rm' on a mapped image with an fs mounted from it
      - 'rbd rm' trims (removes) all image data, only header is left
      - 'rbd rm' tries to remove a header and fails because krbd has a
        watcher registered on the header
      - at this point image cannot be unmapped because of the mounted fs
      - fs cannot be unmounted because all its data and metadata is gone
    
    Unfortunately, this fix doesn't make it impossible to happen (the
    required atomicity isn't there), but it's a big improvement over the
    status quo.
    
    Fixes: http://tracker.ceph.com/issues/7076
    
    Reviewed-by: Josh Durgin <josh.durgin@inktank.com>
    Signed-off-by: Ilya Dryomov <ilya.dryomov@inktank.com>
    (cherry picked from commit 0a553cfa81b06e75585ab3c39927e307ec0f4cb6)

commit a931aaa6cc104d63b20c0cbe9e3af4006c3abfaf
Merge: b476d32 f5668b3
Author: Sage Weil <sage@inktank.com>
Date:   Sun Mar 9 10:56:31 2014 -0700

    Merge pull request #1407 from dachary/wip-7188-dumpling
    
    common: ping existing admin socket before unlink (dumpling)
    
    Reviewed-by: Sage Weil <sage@inktank.com>

commit f5668b363b0724f385bebded3cbc7f363893f985
Author: Loic Dachary <loic@dachary.org>
Date:   Sat Feb 15 11:43:13 2014 +0100

    common: ping existing admin socket before unlink
    
    When a daemon initializes it tries to create an admin socket and unlinks
    any pre-existing file, regardless. If such a file is in use, it causes
    the existing daemon to loose its admin socket.
    
    The AdminSocketClient::ping is implemented to probe an existing socket,
    using the "0" message. The AdminSocket::bind_and_listen function is
    modified to call ping() on when it finds existing file. It unlinks the
    file only if the ping fails.
    
    http://tracker.ceph.com/issues/7188 fixes: #7188
    
    Backport: emperor, dumpling
    Reviewed-by: Sage Weil <sage@inktank.com>
    Signed-off-by: Loic Dachary <loic@dachary.org>
    (cherry picked from commit 45600789f1ca399dddc5870254e5db883fb29b38)

commit b476d324c69d4e6018191a7ffea8c9d6c1dfa008
Merge: d3e13a7 5133dd6
Author: Sage Weil <sage@inktank.com>
Date:   Wed Mar 5 14:19:31 2014 -0800

    Merge pull request #1366 from ceph/wip-6820.dumpling
    
    mon: OSDMonitor: don't crash if formatter is invalid during osd crush dump

commit d3e13a7cdab42fa33182680f45fe21b4f9dc4b20
Merge: c218c99 9c626e0
Author: Josh Durgin <josh.durgin@inktank.com>
Date:   Wed Mar 5 12:45:57 2014 -0800

    Merge pull request #1377 from ceph/wip-7584
    
    qa/workunit/rados/test-upgrade-firely.sh
    
    Reviewed-by: Josh Durgin <josh.durgin@inktank.com>

commit 9c626e0b18f538eb60883da01713ba629220e35e
Author: Sage Weil <sage@inktank.com>
Date:   Wed Mar 5 12:37:10 2014 -0800

    qa/workunit/rados/test-upgrade-firely.sh
    
    Skip the tests that don't pass when run against firefly OSDs.
    
    Fixes: #7584
    Signed-off-by: Sage Weil <sage@inktank.com>

commit c218c999ecebe41e6de6fde76e85cc765cad8257
Merge: 0eabbf1 24711cd
Author: Samuel Just <sam.just@inktank.com>
Date:   Tue Mar 4 07:28:44 2014 -0800

    Merge pull request #1357 from ceph/wip-dumpling-removewq
    
    OSD: ping tphandle during pg removal
    
    Reviewed-by: Greg Farnum <greg@inktank.com>

commit 5133dd60e272d3fcbaacd5662a708ee4cf0db46d
Author: Joao Eduardo Luis <joao.luis@inktank.com>
Date:   Fri Nov 22 02:17:16 2013 +0000

    mon: OSDMonitor: don't crash if formatter is invalid during osd crush dump
    
    Code would assume a formatter would always be defined. If a 'plain'
    formatter or even an invalid formatter were to be supplied, the monitor
    would crash and burn in poor style.
    
    Fixes: 6820
    Backport: emperor
    
    Signed-off-by: Joao Eduardo Luis <joao.luis@inktank.com>
    (cherry picked from commit 49d2fb71422fe4edfe5795c001104fb5bc8c98c3)

commit 24711cd49f85dbe827d41c4bcad2700cd6c42ad7
Author: Samuel Just <sam.just@inktank.com>
Date:   Tue Oct 15 13:11:29 2013 -0700

    OSD: ping tphandle during pg removal
    
    Fixes: #6528
    Signed-off-by: Samuel Just <sam.just@inktank.com>
    Reviewed-by: Sage Weil <sage@inktank.com>
    
    (cherry picked from commit c658258d9e2f590054a30c0dee14a579a51bda8c)
    
    Conflicts:
    	src/osd/OSD.cc

commit 0eabbf145e1c44f4d128b192cc77b708f180c968
Merge: fe8915a 9d5d931
Author: Samuel Just <sam.just@inktank.com>
Date:   Tue Feb 25 15:47:05 2014 -0800

    Merge pull request #1316 from ceph/dumpling-6922
    
    Dumpling: Prevent extreme PG split multipliers
    
    Reviewed-by: Samuel Just <sam.just@inktank.com>

commit fe8915ae7e182340d1e22154e852895742c7da51
Merge: 87822cc 5667566
Author: Samuel Just <sam.just@inktank.com>
Date:   Tue Feb 25 15:45:45 2014 -0800

    Merge pull request #1315 from ceph/dumpling-hashpspool
    
    mon: OSDMonitor: allow (un)setting 'hashpspool' flag via 'osd pool set'
    
    Reviewed-by: Samuel Just <sam.just@inktank.com>

commit 87822ccc862b533132c1fe232dfe4b7b17b816ad
Merge: 0ae3352 37fbcb9
Author: Samuel Just <sam.just@inktank.com>
Date:   Tue Feb 25 15:44:39 2014 -0800

    Merge pull request #1314 from ceph/dumpling-osd-pgstatsack
    
    Dumpling osd pgstatsack
    
    Reviewed-by: Samuel Just <sam.just@inktank.com>

commit 5667566313b69dca011e897b2fa752356ad8901b
Author: Joao Eduardo Luis <joao.luis@inktank.com>
Date:   Thu Oct 10 17:43:48 2013 -0700

    mon: OSDMonitor: allow (un)setting 'hashpspool' flag via 'osd pool set'
    
    Signed-off-by: Joao Eduardo Luis <joao.luis@inktank.com>
    Reviewed-by: Sage Weil <sage@inktank.com>
    (cherry picked from commit 1c2886964a0c005545abab0cf8feae7e06ac02a8)
    
    Conflicts:
    
    	src/mon/MonCommands.h
    	src/mon/OSDMonitor.cc
    
    mon: ceph hashpspool false clears the flag
    instead of toggling it.
    Signed-off-by: Loic Dachary <loic@dachary.org>
    Reviewed-by: Christophe Courtaut <christophe.courtaut@gmail.com>
    Reviewed-by: Sage Weil <sage@inktank.com>
    (cherry picked from commit 589e2fa485b94244c79079f249428d4d545fca18
    
    Replace some of the infrastructure required by this command that
    was not present in Dumpling with single-use code.
    Signed-off-by: Greg Farnum <greg@inktank.com>

commit 9d5d931c60104823b3b20dcfb09480d65ffaa5ed
Author: Greg Farnum <greg@inktank.com>
Date:   Tue Dec 3 10:57:09 2013 -0800

    OSDMonitor: use a different approach to prevent extreme multipliers on PG splits
    
    Signed-off-by: Greg Farnum <greg@inktank.com>
    Reviewed-by: Sage Weil <sage@inktank.com>
    (cherry picked from commit d8ccd73968fbd0753ca08916ebf1062cdb4d5ac1)
    
    Conflicts:
    
    	src/mon/OSDMonitor.cc

commit c0c4448dc7df7900a564a6745903398cd39be7f1
Author: Greg Farnum <greg@inktank.com>
Date:   Mon Dec 2 15:13:40 2013 -0800

    OSDMonitor: prevent extreme multipliers on PG splits
    
    Fixes: #6922
    Backport: emperor
    
    Signed-off-by: Greg Farnum <greg@inktank.com>
    Reviewed-by: Sage Weil <sage@inktank.com>
    (cherry picked from commit f57dad6461171c903e8b5255eaed300374b00e74)
    
    Conflicts:
    
    	src/mon/OSDMonitor.cc

commit c1889497b93ae9f0a946b11d9f5f6fcc7427e934
Author: Sage Weil <sage@inktank.com>
Date:   Sat Feb 22 08:08:37 2014 -0800

    osd: fix off-by-one is boot subscription
    
    If we have osdmap N, we want to onetime subscribe
    starting at N+1.  Among other things, it means we
    hear when the NOUP flag is cleared.
    
    This appears to have broken somewhere around
    3c76b81f2f96b790b72f2088164ed8e9d5efbba1.
    
    Fixes: #7511
    Signed-off-by: Sage Weil <sage@inktank.com>
    Reviewed-by: Sam Just <sam.just@inktank.com>
    (cherry picked from commit 70d23b9a0ad9af5ca35a627a7f93c7e610e17549)
    Reviewed-by: Greg Farnum <greg@inktank.com>

commit 4584f60653bee0305e85418323d80332ceecd0cf
Author: Greg Farnum <greg@inktank.com>
Date:   Tue Feb 11 12:51:19 2014 -0800

    OSD: use the osdmap_subscribe helper
    
    Signed-off-by: Greg Farnum <greg@inktank.com>
    Reviewed-by: Sage Weil <sage@inktank.com>
    (cherry picked from commit 3c76b81f2f96b790b72f2088164ed8e9d5efbba1)

commit 61b2aeee7c37e03d5f6691c08c7760c48a85a2e1
Author: Greg Farnum <greg@inktank.com>
Date:   Tue Feb 11 13:34:39 2014 -0800

    OSD: create a helper for handling OSDMap subscriptions, and clean them up
    
    We've had some trouble with not clearing out subscription requests and
    overloading the monitors (though only because of other bugs). Write a
    helper for handling subscription requests that we can use to centralize
    safety logic. Clear out the subscription whenever we get a map that covers
    it; if there are more maps available than we received, we will issue another
    subscription request based on "m->newest_map" at the end of handle_osd_map().
    
    Notice that the helper will no longer request old maps which we already have,
    and that unless forced it will not dispatch multiple subscribe requests
    to a single monitor.
    Skipping old maps is safe:
    1) we only trim old maps when the monitor tells us to,
    2) we do not send messages to our peers until we have updated our maps
    from the monitor.
    That means only old and broken OSDs will send us messages based on maps
    in our past, and we can (and should) ignore any directives from them anyway.
    
    Signed-off-by: Greg Farnum <greg@inktank.com>
    Reviewed-by: Sage Weil <sage@inktank.com>
    (cherry picked from commit 6db3ae851d1c936de045390d18b1c6ae95f2a209)
    
    Conflicts:
    
    	src/osd/OSD.h

commit d93d67d1a315d8abe8d1cd9d7ea83417a19e2406
Author: Greg Farnum <greg@inktank.com>
Date:   Tue Feb 11 13:31:26 2014 -0800

    monc: new fsub_want_increment( function to make handling subscriptions easier
    
    Provide a subscription-modifying function which will not decrement
    the start version.
    
    Signed-off-by: Greg Farnum <greg@inktank.com>
    Reviewed-by: Sage Weil <sage@inktank.com>
    (cherry picked from commit 5b9c187caf6f7847aaa4a1003d200158dd32bf63)

commit 37fbcb958f79bbfcba57c516b4862a14c52be398
Author: Greg Farnum <greg@inktank.com>
Date:   Wed Feb 12 11:30:15 2014 -0800

    OSD: disable the PGStatsAck timeout when we are reconnecting to a monitor
    
    Previously, the timeout counter started as soon as we issued the reopen,
    but if the reconnect process itself took a while, we might time out and
    issue another reopen just as we get to the point where it's possible to
    get work done. Since the mon client has its own reconnect timeouts (that is,
    the OSD doesn't need to trigger those), we instead disable our timeouts
    while the reconnect is happening, and then turn them back on again starting
    from when we get the reconnect callback.
    
    Signed-off-by: Greg Farnum <greg@inktank.com>
    Reviewed-by: Sage Weil <sage@inktank.com>
    (cherry picked from commit 64cedf6fa3ee309cc96554286bfb805e4ca89439)
    
    Conflicts:
    
    	src/osd/OSD.cc

commit 9be395e870c50d97604ef41f17667cc566fd84e1
Author: Greg Farnum <greg@inktank.com>
Date:   Wed Feb 12 13:51:48 2014 -0800

    monc: backoff the timeout period when reconnecting
    
    If the monitors are systematically slowing down, we don't want to spam
    them with reconnect attempts every three seconds. Instead, every time
    we issue a reconnect, multiply our timeout period by a configurable; when
    we complete the connection, reduce that multipler by 50%. This should let
    us respond to monitor load.
    Of course, we don't want to do that for initial startup in the case of a
    couple down monitors, so don't apply the backoff until we've successfully
    connected to a monitor at least once.
    
    Signed-off-by: Greg Farnum <greg@inktank.com>
    Reviewed-by: Sage Weil <sage@inktank.com>
    (cherry picked from commit 794c86fd289bd62a35ed14368fa096c46736e9a2)

commit 8f4c20bdab153d1603cc99186d8d3e3970aa8976
Author: Greg Farnum <greg@inktank.com>
Date:   Wed Feb 12 13:37:50 2014 -0800

    monc: set "hunting" to true when we reopen the mon session
    
    If we don't have a connecton to a monitor, we want to retry to another
    monitor regardless of whether it's the first time or not.
    
    Signed-off-by: Greg Farnum <greg@inktank.com>
    Reviewed-by: Sage Weil <sage@inktank.com>
    (cherry picked from commit 60da8abe0ebf17ce818d6fcc6391401878123bb7)

commit c6317558e0d3c8c62aecee0d95a839f93303f681
Author: Greg Farnum <greg@inktank.com>
Date:   Tue Feb 11 17:53:56 2014 -0800

    monc: let users specify a callback when they reopen their monitor session
    
    Then the callback is triggered when a new session is established, and the
    daemon can do whatever it likes. There are no guarantees about how long it
    might take to trigger, though. In particular we call the provided callback
    while not holding our own lock in order to avoid deadlock. This could lead
    to some funny ordering from the user's perspective if they call
    reopen_session() again before getting the callback, but there's no way around
    that, so they just have to use it appropriately.
    
    Signed-off-by: Greg Farnum <greg@inktank.com>
    Reviewed-by: Sage Weil <sage@inktank.com>
    (cherry picked from commit 1a8c43474bf36bfcf2a94bf9b7e756a2a99f33fd)

commit 0ae335298b85daba5125a3da4ad26d598c76ecab (refs/remotes/gh/multi-object-delete)
Author: Yehuda Sadeh <yehuda@inktank.com>
Date:   Tue Feb 11 16:54:05 2014 -0800

    rgw: multi object delete should be idempotent
    
    Fixes: #7346
    When doing a multi object delete, if an object does not exist then we
    should return a success code for that object.
    
    Signed-off-by: Yehuda Sadeh <yehuda@inktank.com>
    (cherry picked from commit 8ca3d95bf633ea9616852cec74f02285a03071d5)
    
    Conflicts:
    	src/rgw/rgw_op.cc