examples: add elasticsearch and prometheus examples

Add examples on how to use lua scripting to push request fields from the RGW to Elasticsearch and Prometheus.

Signed-off-by: Zulai Wang <zl31wang@gmail.com>

Merge pull request #42801 from ivancich/wip-update-rados-rm-help

doc: clarify use of `rados rm` command

Reviewed-by: Kefu Chai <kchai@redhat.com>
Reviewed-by: Patrick Donnelly <pdonnell@redhat.com>
Reviewed-by: Neha Ojha <nojha@redhat.com>

Merge pull request #42822 from tchaikov/wip-drop-gdbm

ceph.spec.in: drop gdbm from build deps

Reviewed-by: Ken Dreyer <kdreyer@redhat.com>
Reviewed-by: Ilya Dryomov <idryomov@gmail.com>

ceph.spec.in: drop gdbm from build deps

neither gdbm nor libgdbm is used when building ceph, so let's drop it.

Signed-off-by: Kefu Chai <kchai@redhat.com>

Merge pull request #42738 from sebastian-philipp/mypy-3.7

pybind/mgr: tox: also test mypy with python 3.7

Reviewed-by: Kefu Chai <kchai@redhat.com>

Merge pull request #42811 from tchaikov/wip-dashboard-test

mgr/dashboard/api: set a UTF-8 locale when running pip

Reviewed-by: Avan Thakkar <athakkar@redhat.com>

Merge pull request #42732 from rhcs-dashboard/bug-1950644

mgr/dashboard: disable create snapshot with subvolumes

Merge pull request #42717 from rhcs-dashboard/iscsi-target-refresh-btn

mgr/dashboard: Refresh button on the iscsi targets page

Merge pull request #42786 from aaryanporwal/visual-tests

mgr/dashboard: visual tests: Add more ignore regions for dashboard component

mgr/dashboard: disable create snapshot with subvolumes

Signed-off-by: Pere Diaz Bou <pdiazbou@redhat.com>

Merge pull request #42808 from tchaikov/wip-crimson-test-cleanup

test/crimson: do not discard returned future<>

Reviewed-by: Samuel Just <sjust@redhat.com>
Reviewed-by: Radoslaw Zarzynski <rzarzyns@redhat.com>

mgr/dashboard/api: set a UTF-8 locale when running pip

ansible-core started to include files whose filenames are encoded in
non-ascii characters, so we have to use a more capable encoding for the
locale in order to install this package. otherwise we'd have following
error:

Collecting ansible-core<2.12,>=2.11.3
  Using cached ansible-core-2.11.4.tar.gz (6.8 MB)
ERROR: Exception:

Traceback (most recent call last):
  File "/tmp/tmp.fX76ASIrch/venv/lib/python3.8/site-packages/pip/_internal/cli/base_command.py", line 173, in _main
    status = self.run(options, args)
...
  File "/tmp/tmp.fX76ASIrch/venv/lib/python3.8/site-packages/pip/_internal/utils/unpacking.py", line 226, in untar_file
    with open(path, "wb") as destfp:
UnicodeEncodeError: 'latin-1' codec can't encode characters in position 137-140: ordinal not in range(256)

Signed-off-by: Kefu Chai <kchai@redhat.com>

Merge pull request #42807 from tchaikov/wip-crimson-test-more-chatty

test/crimson: re-enable logging output

Reviewed-by: Yingxin Cheng <yingxin.cheng@intel.com>
Reviewed-by: Xuehan Xu <xuxuehan@360.cn>

Merge pull request #42791 from ideepika/wip-50947-blk-cmake

src/blk: fix block_device_t return if no aio libs present

Reviewed-by: Kefu Chai <kchai@redhat.com>

Merge pull request #42800 from tchaikov/wip-cmake-debug-build

cmake: set CMAKE_BUILD_TYPE to Debug when .git exists

Reviewed-by: Deepika Upadhyay <dupadhya@redhat.com>
Reviewed-by: Xiubo Li <xiubli@redhat.com>

test/crimson: do not discard returned future<>

to silence following warning:

../src/test/crimson/seastore/test_randomblock_manager.cc:122:7: warning: ignoring return value of function declared with 'nodiscard' attribute [-Wunused-result]
      rbm_manager->add_free_extent(t.allocated_blocks, r.first * DEFAULT_BLOCK_SIZE,
      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Signed-off-by: Kefu Chai <kchai@redhat.com>

test/crimson: use structured binding

for better readability

Signed-off-by: Kefu Chai <kchai@redhat.com>

Merge pull request #42798 from xxhdx1985126/wip-52275

crimson/common: allow the tls interrupt_cond to exist when a continuation starts to run

Reviewed-by: Samuel Just <sjust@redhat.com>
Reviewed-by: Chunmei Liu <chunmei.liu@intel.com>
Reviewed-by: Kefu Chai <kchai@redhat.com>

test/crimson: re-enable logging output

this change reverts 57877075c0b6885c7e35dc4c4a881b140c30cfb0

per Yingxin's request, we should enable it for better debugging
experience when the test fails.

Signed-off-by: Kefu Chai <kchai@redhat.com>

Merge pull request #42787 from rzarzynski/wip-crimson-fix-warn-storenbd

crimson/tools: silence [[maybe_unused]] warning in store-nbd.cc.

Reviewed-by: Samuel Just <sjust@redhat.com>
Reviewed-by: Kefu Chai <kchai@redhat.com>

Revert "crimson/onode-staged-tree: force test work with invalidated transactions"

This reverts commit 8b6428c4ac08a7d3beabf64f549bfe11e5245978.

Signed-off-by: Yingxin Cheng <yingxin.cheng@intel.com>

test/crimson: avoid creating interrupt condition within an already interruptible continuation chain

Signed-off-by: Xuehan Xu <xxhdx1985126@gmail.com>

crimson/common: assert the existence of interrupt_cond even in release builds

Signed-off-by: Xuehan Xu <xxhdx1985126@gmail.com>

crimson/common: allow the tls interrupt_cond to exist when a continuation starts to run

Release build of seastar invokes continuations synchronously if their predecessor futures
are resolved at the time when those continuations are constructed, so we have to allow
these circumstances to happen

Fixes: https://tracker.ceph.com/issues/52275
Signed-off-by: Xuehan Xu <xxhdx1985126@gmail.com>

Merge pull request #42658 from tchaikov/wip-doc-build

admin/build-doc: rebuild venv if md5 does not match

Reviewed-by: Deepika Upadhyay <dupadhya@redhat.com>

Merge PR #42749 into master

* refs/pull/42749/head:
doc: document that NEARFULL conditions can result in slow writes

Reviewed-by: Patrick Donnelly <pdonnell@redhat.com>

Merge pull request #42797 from rzarzynski/wip-crimson-no-prometheus-by-default

crimson/osd: disable Premetheous by default.

Reviewed-by: Chunmei Liu <chunmei.liu@intel.com>
Reviewed-by: Kefu Chai <kchai@redhat.com>

cmake: set CMAKE_BUILD_TYPE to Debug when .git exists

if CMAKE_BUILD_TYPE is an empty string, we should also set it to Debug.

Signed-off-by: Kefu Chai <kchai@redhat.com>

erasure-code/clay: do not set unreferenced variable

plane_count was introduced by 2a3e56b22c5b52e4834a9fd5047b3cdff7e8859f,
and presumably it is only used for debugging. let's drop it as it is not
referenced in production.

this change silences following warning:

../src/erasure-code/clay/ErasureCodeClay.cc:502:7: error: variable 'plane_count' set but not used [-Werror,-Wunused-but-set-variable]
  int plane_count = 0;
      ^

Signed-off-by: Kefu Chai <kchai@redhat.com>

erasure-code/lrc: early return if to_string() fails

so far to_string() always return 0, but it is designed to return
an error code if it fails to parse a string.

this change silences following warning:

../src/erasure-code/lrc/ErasureCodeLrc.cc:399:7: error: variable 'err' set but not used [-Werror,-Wunused-but-set-variable]
  int err = 0;
      ^

Signed-off-by: Kefu Chai <kchai@redhat.com>

mds/CDir: do not set referenced variable

off is set by never get referenced, let's just drop it.

this variable was introduced by
0ec5f3a84aa29ec422e920fb5dc989ed90897e6b.

Signed-off-by: Kefu Chai <kchai@redhat.com>

Merge pull request #42731 from liu-chunmei/seastore-alloc-extent-hint

crimson/seastore alloc extent hint

Replace L_ADDR_MIN by obj hash in onode, omap, object_data when alloc_extent.

Reviewed-by: Sam Just <sjust@redhat.com> and Cheng, Yingxin <yingxin.cheng@intel.com>

rgw: disable -Wimplicit-const-int-float-conversion conditionally

to silence warning like:

 unknown warning group '-Wimplicit-const-int-float-conversion', ignored [-Werror,-Wunknown-warning-option]
 #pragma clang diagnostic ignored "-Wimplicit-const-int-float-conversion"

clang-10 does not support this option yet.

Signed-off-by: Kefu Chai <kchai@redhat.com>

doc: clarify use of `rados rm` command

The man page did not make it clear that multiple objects could be
specified, nor did it describe use of "--force-full".

Info displayed about "rm" with `rados --help` was poorly formatted and
the wording was adjusted.

Signed-off-by: J. Eric Ivancich <ivancich@redhat.com>

crimson/seastore: change unit test using hint

Signed-off-by: Chunmei Liu <chunmei.liu@intel.com>

crimson/seastore: replace L_ADDR_MIN by hint in omap

Signed-off-by: chunmei-liu <chunmei.liu@intel.com>

crimson/seastore: use get_hint in object_data_handler

Signed-off-by: Chunmei Liu <chunmei.liu@intel.com>

crimson/seastore: replace L_ADDR_MIN by obj hash in Onode

Signed-off-by: Chunmei Liu <chunmei.liu@intel.com>

Merge pull request #42340 from mkogan1/wip-d3n-docs

doc/radosgw/d3n: add user docs

Reviewed-by: Casey Bodley <cbodley@redhat.com>
Reviewed-by: Matt Benjamin <mbenjamin@redhat.com>

crimson/osd: disable Prometheous by default.

As we lack the machinery for distributed port allocation, spawning
multiple instances of crimson on the same node is impossible. This
makes almost all Teuthology jobs red very early.

Signed-off-by: Radoslaw Zarzynski <rzarzyns@redhat.com>

doc/radosgw/d3n: add user docs

(high-level feature description, setup instructions, config options)
Fixes: https://tracker.ceph.com/issues/51409
Signed-off-by: Mark Kogan <mkogan@redhat.com>

Merge pull request #42790 from ronen-fr/wip-ronenf-std-fix

key_value_store: fix missing std

Reviewed-by: Kefu Chai <kchai@redhat.com>

Merge pull request #42795 from tchaikov/wip-cmake-quiet

cmake: silence build output when building external deps

Reviewed-by: Deepika Upadhyay <dupadhya@redhat.com>

src/blk: fix block_device_t return if no aio libs present

In cases, when no libaio are present in the system, compilation fails,
return block_device_t as unknown

fixes: https://tracker.ceph.com/issues/50947#note-1

Signed-off-by: Deepika Upadhyay <dupadhya@redhat.com>

cmake: do not quote string

otherwise we have

CMake Error at /home/jenkins-build/build/workspace/ceph-pull-requests/build/spdk-ext-prefix/src/spdk-ext-stamp/spdk-ext-build-.cmake:37 (message):
  Command failed: 2

   'env' '-i' 'PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin' 'CC=/usr/bin/clang-10' '/usr/bin/make' 'EXTRA_CFLAGS=' '-fPIC' '-Wno-address-of-packed-member""'

Signed-off-by: Kefu Chai <kchai@redhat.com>

cmake: silence build output when building external deps

when download/building grafonnet-lib, dpdk, spdk, liburing and fio,
they dump lots of output during configuration and building phrases,
all of which is irrelevant to us. so let's just silence it.

Signed-off-by: Kefu Chai <kchai@redhat.com>

Merge pull request #42784 from tchaikov/wip-rgw_dencoder

rgw/rgw_dencoder: set identity_type when creating samples

Reviewed-by: Casey Bodley <cbodley@redhat.com>

key_value_store: fix missing std

following PR #42742

Signed-off-by: Ronen Friedman <rfriedma@redhat.com>

Merge pull request #42785 from tchaikov/wip-no-warnings

run-make-check: pass -Werror when compiling C++ code and a couple cleanups

Reviewed-by: Radoslaw Zarzynski <rzarzyns@redhat.com>
Reviewed-by: Casey Bodley <cbodley@redhat.com>

Merge pull request #42714 from ronen-fr/wip-ronenf-last-update

osd/scrub: only telling the scrubber of 'updates' events if these eve…

Reviewed-by: Samuel Just <sjust@redhat.com>

Merge pull request #42754 from aclamk/wip-aclamk-bluefs-improve-allocation-check

os/bluestore/bluefs: Cleanup allocation consistency check code

Reviewed-by: Igor Fedotov <ifedotov@suse.com>

mgr/dashboard: visual tests: Add more ignore regions for dashboard component

Fixes: https://tracker.ceph.com/issues/52282
Signed-off-by: Aaryan Porwal <aaryanporwal2233@gmail.com>

crimson/tools: silence [[maybe_unused]] warning in store-nbd.cc.

```
[595/2463] Building CXX object src/crimson/tools/CMakeFiles/crimson-store-nbd.dir/store_nbd/store-nbd.cc.o
../src/crimson/tools/store_nbd/store-nbd.cc:324:43: warning: maybe_unused attribute ignored [-Wattributes]
  324 |   [[maybe_unused]] char reserved[124] = {0};
```

Signed-off-by: Radoslaw Zarzynski <rzarzyns@redhat.com>

run-make-check: pass -Werror when compiling C++ code

to raise the bar so we can identify potential issues earlier.

Signed-off-by: Kefu Chai <kchai@redhat.com>

cmake: use -Wno-unused-but-set-variable when compiling SPDK if supported

to silence warnings like:

In file included from nvme_tcp.c:52:
/home/jenkins-build/build/workspace/ceph-pull-requests/src/spdk/include/spdk_internal/nvme_tcp.h:369:17: warning: variable 'plen' set but not used [-Wunused-but-set-variable]
        uint32_t hlen, plen;
                       ^

Signed-off-by: Kefu Chai <kchai@redhat.com>

Merge pull request #42580 from hualongfeng/solve_competition_between_read_and_retire

librbd/cache/pwl/ssd: solve competition between read and retire

Reviewed-by: Mahati Chamarthy <mahati.chamarthy@intel.com>
Reviewed-by: Ilya Dryomov <idryomov@gmail.com>

cmake: use string(APPEND ..) to append to string

more readable and less repeating this way.

Signed-off-by: Kefu Chai <kchai@redhat.com>

rgw/rgw_rest: do not set unused variable

`len` is used to track the total length of received data, but we already
collect the data in `bl`, so we can always check `bl` for the total
length. this change also silences following warning from Clang:

../src/rgw/rgw_rest.cc:1477:21: warning: variable 'len' set but not used [-Wunused-but-set-variable]
  int read_len = 0, len = 0;
                    ^
1 warning generated.

Signed-off-by: Kefu Chai <kchai@redhat.com>

mgr/dashboard: Refresh button on the iscsi targets page

Added a refresh button on the iscsi targets page. I've noticed that the
auto reload causes some load on the backend. So I disabled the auto
reload and went for the same approach as we have on rgw. A yellow
warning color on refresh btn to let the user know to manually refresh
that whenever needed.

Fixes: https://tracker.ceph.com/issues/52102
Signed-off-by: Nizamudeen A <nia@redhat.com>

os/bluestore/BlueStore: make maybe unused variable [[maybe_unused]]

cct is defined so it can be used by dout(), but when the source code is
compiled for crimson, dout() does not use cct at all, so in that case,
compiler complains like:

../src/os/bluestore/BlueStore.cc:17413:8: warning: unused variable 'cct' [-Wunused-variable]
  auto cct  = onode->c->store->cct;
       ^
1 warning generated.

in this change, cct is marked with [[maybe_unused]] to silence this
warning.

Signed-off-by: Kefu Chai <kchai@redhat.com>

Merge pull request #42777 from tchaikov/wip-clang-build

run-make-check,cmake: use clang in run-make-check.sh

Reviewed-by: Radoslaw Zarzynski <rzarzyns@redhat.com>

rgw/rgw_json_enc: dump rgw_log_entry::identity_type

should dump it for better debugging experience

Signed-off-by: Kefu Chai <kchai@redhat.com>

rgw/rgw_json_enc: dump obj using dump_stream()

use dump_stream() instead of dump_string() for dumping stringify object.

more readably this way.

Signed-off-by: Kefu Chai <kchai@redhat.com>

rgw/rgw_dencoder: set identity_type when creating samples

otherwise identity_type is a random number on stack. and there is good
chance that it does not match with the one decoded from the encoded
blob.

this change should address the failures like:

**** rgw_log_entry test 2 binary reencode check failed ****
   ceph-dencoder type rgw_log_entry select_test 2 encode export /tmp/typ-O8hVYK2Gb
   ceph-dencoder type rgw_log_entry select_test 2 encode decode encode export /tmp/typ-G09itHHIC
   cmp /tmp/typ-O8hVYK2Gb /tmp/typ-G09itHHIC

The following tests FAILED:
132 - check-generated.sh (Failed)
..

Fixes: https://tracker.ceph.com/issues/52278
Signed-off-by: Kefu Chai <kchai@redhat.com>

test/crimson: disable logging for unittest-*fltree*

these two tests are very chatty, just silence it. we can always re-enable the
logging, if something goes wrong with any of them.

Signed-off-by: Kefu Chai <kchai@redhat.com>

cmake: pass -Wunused-but-set-variable when building dpdk

otherwise we have:

src/spdk/dpdk/lib/librte_eal/linux/eal.c:591:11: error: variable 'total_mem' set but not used [-Werror,-Wunused-but-set-variable]
        uint64_t total_mem = 0;
                 ^
1 error generated.

when building dpdk with Clang. dpdk passes -Werror to compiler, so
we have to disable this option.

Signed-off-by: Kefu Chai <kchai@redhat.com>

cmake/modules/BuildFIO: use ceph fork

to pick up the clang build fix. we should use the upstream repo, once the
clang build fix gets merged.

bumping up the fio helps to address following error, as this part was rewritten:

src/test/fio/CMakeFiles/fio_ceph_objectstore.dir/fio_ceph_objectstore.cc.o.d -o src/test/fio/CMakeFiles/fio_ceph_objectstore.dir/fio_ceph_objectstore.cc.o -c ../src/test/fio/fio_ceph_objectstore.cc
In file included from ../src/test/fio/fio_ceph_objectstore.cc:26:
In file included from src/fio/fio.h:18:
In file included from src/fio/thread_options.h:6:
In file included from src/fio/options.h:8:
src/fio/parse.h:128:13: error: arithmetic on a pointer to void
        return ret + offset;
               ~~~ ^
1 error generated.

Signed-off-by: Kefu Chai <kchai@redhat.com>

build: switch the make check bot to Clang.

Signed-off-by: Radoslaw Zarzynski <rzarzyns@redhat.com>

Merge pull request #42781 from cyx1231st/wip-seastore-disable-test-intr-future

crimson/onode-staged-tree: force test to work with invalidated transactions

Reviewed-by: Samuel Just <sjust@redhat.com>
Reviewed-by: Kefu Chai <kchai@redhat.com>

crimson/onode-staged-tree: force test work with invalidated transactions

is_then() is failed to interrupt the continuation chain and cause
unit test failure. So add a workaround to make the test pass again.

Fixes: https://tracker.ceph.com/issues/52259
Signed-off-by: Yingxin Cheng <yingxin.cheng@intel.com>

Merge pull request #42778 from tchaikov/wip-crimson-cleanup

crimson/os/seastore: do not capture unused variable

Reviewed-by: Yingxin Cheng <yingxin.cheng@intel.com>

Merge pull request #42776 from tchaikov/wip-freebsd

msg/async: build without "using namespace std"

Reviewed-by: Willem Jan Withagen <wjw@digiware.nl>

test: s/INSTANTIATE_TEST_CASE_P/INSTANTIATE_TEST_SUITE_P/

to silence warnings like:

../src/test/osd/TestOSDMap.cc:2076:1: warning: 'InstantiateTestCase_P_IsDeprecated' is deprecated: INSTANTIATE_TEST_CASE_P is deprecated, please use INSTANTIATE_TEST_SUITE_P
[-Wdeprecated-declarations]
INSTANTIATE_TEST_CASE_P(
^
../src/googletest/googletest/include/gtest/gtest-param-test.h:505:38: note: expanded from macro 'INSTANTIATE_TEST_CASE_P'
  static_assert(::testing::internal::InstantiateTestCase_P_IsDeprecated(), \
                                     ^
../src/googletest/googletest/include/gtest/internal/gtest-internal.h:1298:1: note: 'InstantiateTestCase_P_IsDeprecated' has been explicitly marked deprecated here
GTEST_INTERNAL_DEPRECATED(
^
../src/googletest/googletest/include/gtest/internal/gtest-port.h:2249:59: note: expanded from macro 'GTEST_INTERNAL_DEPRECATED'
 #define GTEST_INTERNAL_DEPRECATED(message) __attribute__((deprecated(message)))
                                                          ^
1 warning generated.

Signed-off-by: Kefu Chai <kchai@redhat.com>

crimson/os/seastore: do not capture unused variable

Signed-off-by: Kefu Chai <kchai@redhat.com>

Merge pull request #42744 from wjwithagen/wjw-fix-varlength-init

rgw/store: Do not init var-length arrays

Reviewed-by: Soumya Koduri <skoduri@redhat.com>
Reviewed-by: Kefu Chai <kchai@redhat.com>

msg/async: build without "using namespace std"

* add "std::" prefix in headers

Signed-off-by: Kefu Chai <kchai@redhat.com>

Merge pull request #42730 from tchaikov/wip-cmake-build-type

cmake: set CMAKE_BUILD_TYPE only if it is not specified

Reviewed-by: Yingxin Cheng <yingxin.cheng@intel.com>
Reviewed-by: Mark Nelson <mnelson@redhat.com>

Merge pull request #42742 from tchaikov/wip-no-using-namespace-std

src: build without "using namespace std"

Reviewed-by: Ilya Dryomov <idryomov@gmail.com>
Reviewed-by: Radoslaw Zarzynski <rzarzyns@redhat.com>
Reviewed-by: Casey Bodley <cbodley@redhat.com>
Reviewed-by: Adam C. Emerson <aemerson@redhat.com>

include/object.h: do not "using namespace std"

so the identifiers in "std" namespace do not conflict the ones in C code
or the idenfitiers in other namespaces.

Signed-off-by: Kefu Chai <kchai@redhat.com>

dokan: : build without "using namespace std"

* add "using" declarations in .cc files.

so we don't rely on "using namespace std" in one or more included
headers.

Signed-off-by: Kefu Chai <kchai@redhat.com>

java: build without "using namespace std"

* add "using" declarations in .cc files.

so we don't rely on "using namespace std" in one or more included
headers.

Signed-off-by: Kefu Chai <kchai@redhat.com>

tools/cephfs: build without "using namespace std"

* add "std::" prefix in headers
* add "using" declarations in .cc files.

so we don't rely on "using namespace std" in one or more included
headers.

Signed-off-by: Kefu Chai <kchai@redhat.com>

tools/rbd_nbd: build without "using namespace std"

* add "std::" prefix in headers
* add "using" declarations in .cc files.

so we don't rely on "using namespace std" in one or more included
headers.

Signed-off-by: Kefu Chai <kchai@redhat.com>

mount.ceph: build without "using namespace std"

* add "std::" prefix in headers
* add "using" declarations in .cc files.

so we don't rely on "using namespace std" in one or more included
headers.

Signed-off-by: Kefu Chai <kchai@redhat.com>

crimson/tools: build without "using namespace std"

* add "std::" prefix in headers
* add "using" declarations in .cc files.

so we don't rely on "using namespace std" in one or more included
headers.

Signed-off-by: Kefu Chai <kchai@redhat.com>

tools/erasure-code: build without "using namespace std"

* add "std::" prefix in headers
* add "using" declarations in .cc files.

so we don't rely on "using namespace std" in one or more included
headers.

Signed-off-by: Kefu Chai <kchai@redhat.com>

cephfs-mirror: build without "using namespace std"

* add "std::" prefix in headers
* add "using" declarations in .cc files.

so we don't rely on "using namespace std" in one or more included
headers.

Signed-off-by: Kefu Chai <kchai@redhat.com>

client: build without "using namespace std"

* add "std::" prefix in headers
* add "using" declarations in .cc files.

so we don't rely on "using namespace std" in one or more included
headers.

Signed-off-by: Kefu Chai <kchai@redhat.com>

ceph_fuse: build without "using namespace std"

* add "std::" prefix in headers
* add "using" declarations in .cc files.

so we don't rely on "using namespace std" in one or more included
headers.

Signed-off-by: Kefu Chai <kchai@redhat.com>

krbd: build without "using namespace std"

* add "std::" prefix in headers
* add "using" declarations in .cc files.

so we don't rely on "using namespace std" in one or more included
headers.

Signed-off-by: Kefu Chai <kchai@redhat.com>

crush: build without "using namespace std"

* add "std::" prefix in headers
* add "using" declarations in .cc files.

so we don't rely on "using namespace std" in one or more included
headers.

Signed-off-by: Kefu Chai <kchai@redhat.com>

compressor: build without "using namespace std"

* add "std::" prefix in headers
* add "using" declarations in .cc files.

so we don't rely on "using namespace std" in one or more included
headers.

Signed-off-by: Kefu Chai <kchai@redhat.com>

auth: build without "using namespace std"

* add "std::" prefix in headers
* add "using" declarations in .cc files.

so we don't rely on "using namespace std" in one or more included
headers.

Signed-off-by: Kefu Chai <kchai@redhat.com>

kv: build without "using namespace std"

* add "std::" prefix in headers
* add "using" declarations in .cc files.

so we don't rely on "using namespace std" in one or more included
headers.

Signed-off-by: Kefu Chai <kchai@redhat.com>

msg: build without "using namespace std"

* add "std::" prefix in headers
* add "using" declarations in .cc files.

so we don't rely on "using namespace std" in one or more included
headers.

Signed-off-by: Kefu Chai <kchai@redhat.com>

neorados: build without "using namespace std"

* add "std::" prefix in headers
* add "using" declarations in .cc files.

so we don't rely on "using namespace std" in one or more included
headers.

Signed-off-by: Kefu Chai <kchai@redhat.com>

libradosstriper: build without "using namespace std"

* add "std::" prefix in headers
* add "using" declarations in .cc files.

so we don't rely on "using namespace std" in one or more included
headers.

Signed-off-by: Kefu Chai <kchai@redhat.com>

libcephfs: build without "using namespace std"

* add "std::" prefix in headers
* add "using" declarations in .cc files.

so we don't rely on "using namespace std" in one or more included
headers.

Signed-off-by: Kefu Chai <kchai@redhat.com>

blk: build without "using namespace std"

* add "std::" prefix in headers
* add "using" declarations in .cc files.

so we don't rely on "using namespace std" in one or more included
headers.

Signed-off-by: Kefu Chai <kchai@redhat.com>

libcephsqlite: build without "using namespace std"

* add "std::" prefix in headers
* add "using" declarations in .cc files.

so we don't rely on "using namespace std" in one or more included
headers.

Signed-off-by: Kefu Chai <kchai@redhat.com>