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Issue:
libgfchangelog.so: cannot open shared object file
Due to hardcoded shared library name runtime loader looks for particular version of
a shared library.
Solution:
Using find_library to locate shared library at runtime solves this issue.
Traceback (most recent call last):
File "/usr/libexec/glusterfs/python/syncdaemon/gsyncd.py", line 323, in main
func(args)
File "/usr/libexec/glusterfs/python/syncdaemon/subcmds.py", line 82, in subcmd_worker
local.service_loop(remote)
File "/usr/libexec/glusterfs/python/syncdaemon/resource.py", line 1261, in service_loop
changelog_agent.init()
File "/usr/libexec/glusterfs/python/syncdaemon/repce.py", line 233, in __call__
return self.ins(self.meth, *a)
File "/usr/libexec/glusterfs/python/syncdaemon/repce.py", line 215, in __call__
raise res
OSError: libgfchangelog.so: cannot open shared object file: No such file or directory
Change-Id: I3dd013d701ed1cd99ba7ef20d1898f343e1db8f5
fixes: bz#1699394
Signed-off-by: Sunny Kumar <sunkumar@redhat.com>
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Some of the scripts that have a #!/usr/bin/python3 shebang do not have a
main() like function. These scripts will not get executed but only
imported. They do not need the shebang.
A few others are not installed with 'make install', but do have a main()
like function. These scripts are expected to be used by developers for
different tasks (mostly code generation). Marking these scripts
executable to make it easier to identify them.
Change-Id: I73541471deb7e0830766b804786244e73dfe4221
Updates: #411
Signed-off-by: Niels de Vos <ndevos@redhat.com>
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see https://review.gluster.org/#/c/19788/,
https://review.gluster.org/#/c/19871/,
https://review.gluster.org/#/c/19952/,
https://review.gluster.org/#/c/20104/,
https://review.gluster.org/#/c/20162/,
https://review.gluster.org/#/c/20185/,
https://review.gluster.org/#/c/20207/,
https://review.gluster.org/#/c/20227/,
https://review.gluster.org/#/c/20307/,
https://review.gluster.org/#/c/20320/,
https://review.gluster.org/#/c/20332/,
https://review.gluster.org/#/c/20364/,
https://review.gluster.org/#/c/20441/, and
https://review.gluster.org/#/c/20484
shebangs changed from /usr/bin/python2 to /usr/bin/python3.
(Reminder, various distribution packaging guidelines require use
of explicit python version and don't allow '#!/usr/bin/env python',
regardless of how handy that idiom may be.)
glusterfs.spec(.in) package python{2,3}-gluster and python2 or
python3 dependencies as appropriate.
configure(.ac):
+ test for and use python2 or python3 as appropriate. If build
machine has python2 and python3, use python3. Override by
setting PYTHON=/usr/bin/python2 when running configure.
+ PYTHONDEV_CPPFLAGS from python[23]-config --includes is a
better match to the original python sysconfig.get_python_inc().
All those other extraneous flags breaks the build.
+ Only change the shebangs once. Changing them over and over
again, e.g., during a `make glusterrpms` in extras/LinuxRPM
just sends make (is it really make that's looping?) into an
infinite loop. If you figure out why, let me know.
+ Oldest python2 is python2.6 on CentOS 6 and Debian 8 (Jessie).
Everything else has 2.7 or 3.x
+ logic from https://review.gluster.org/c/glusterfs/+/21050, which
needs to be removed/merged after that patch is merged.
Builds on CentOS 6, CentOS 7, Fedora 28, Fedora rawhide, and the
mysterious RHEL > 7.
Change-Id: Idae21d3b6f58b32372e1daa0d234e491e563198f
updates: #411
Signed-off-by: Kaleb S. KEITHLEY <kkeithle@redhat.com>
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see https://review.gluster.org/#/c/19788/
use print fn from __future__
Change-Id: If5075d8d9ca9641058fbc71df8a52aa35804cda4
updates: #411
Signed-off-by: Kaleb S. KEITHLEY <kkeithle@redhat.com>
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Note 1) we're not supposed to be using #!/usr/bin/env python, see
https://fedoraproject.org/wiki/Packaging:Guidelines?rd=Packaging/Guidelines#Shebang_lines
Note 2) we're also not supposed to be using "!/usr/bin/python,
see https://fedoraproject.org/wiki/Changes/Avoid_usr_bin_python_in_RPM_Build#Quick_Opt-Out
The previous patch (https://review.gluster.org/19767) tried to do too
much in one patch, so it was abandoned.
This patch does two things:
1) minor cleanup of configure(.ac) to explicitly use python2
2) change all the shebang lines to #!/usr/bin/python2 and add them
where they were missing based on warnings emitted during rpmbuild.
In a follow-up patch python2 will eventually be changed to python3.
Before that python2-isms (e.g. print, string.join(), etc.) need to be
converted to python3. Some of those can be rewritten in version agnostic
python. E.g. print statements become print() with "from __future_ import
print_function". The python 2to3 utility will be used for some of those.
Also Aravinda has given guidance in the comments to the first patch for
changes.
updates: #411
Change-Id: I471730962b2526022115a1fc33629fb078b74338
Signed-off-by: Kaleb S. KEITHLEY <kkeithle@redhat.com>
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`find_library()` doesn't consider LD_LIBRARY_PATH on Python < 3.6.
Change-Id: Iee26085cb5d14061001f19f032c2664d69a378a8
BUG: 1450593
Signed-off-by: Niklas Hambüchen <mail@nh2.me>
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Incorporate the new API 'gf_changelog_init'
introduced in libgfchangelog which should
be called before 'gf_changelog_register'.
Change-Id: I10a9dd5ff3ecc64fd61dcb6b1aa53739e0bdeedd
BUG: 1238063
Signed-off-by: Kotresh HR <khiremat@redhat.com>
Reviewed-on: http://review.gluster.org/11479
Tested-by: NetBSD Build System <jenkins@build.gluster.org>
Reviewed-by: Venky Shankar <vshankar@redhat.com>
Tested-by: Gluster Build System <jenkins@build.gluster.com>
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This is the initial version of the Changelog Translator.
What is it
-----------
Goal is to capture changes performed on a GlusterFS volume.
The translator needs to be loaded on the server (bricks) and
captures changes in a plain text file inside a configured
directory path (controlled by "changelog-dir", should be
somewhere in <export>/.glusterfs/changelog by default).
Changes are classified into 3 types:
- Data: : TYPE-I
- Metadata : TYPE-II
- Entry : TYPE-III
Changelog file is rolled over after a certain time interval
(defauls to 60 seconds) after which a changelog is started.
The thing to be noted here is that for a time interval
(time slice) multiple changes for an inode are recorded only
once (ie. say for 100+ writes on an inode that happens within
the time slice has only a single corresponding entry in the
changelog file). That way we do not bloat up the changelog
and also save lots of writes.
Changelog Format
-----------------
TYPE-I and TYPE-II changes have the gfid on the entity on
which the operation happened. TYPE-III being a entry op
requires the parent gfid and the basename. Changelog format
has been kept to a minimal and it's upto the consumers to
do the heavy loading of figuring out deletes, renames etc..
A single changelog file records all three types of changes,
with each change starting with an identifier ("D": DATA,
"M": METADATA and "E": ENTRY). Option is provided for the
encoding type (See TUNABLES).
Consumers
----------
The only consumer as of today would be geo-replication, although
backup utilities, self-heal, bit-rot detection could be possible
consumers in the future.
CLI
----
By default, change-logging is disabled (the translator is present
in the server graph but does nothing). When enabled (via cli) each
brick starts to log the changes. There are a set of tunable that
can be used to change the translators behaviour:
- enable/disable changelog (disabled by default)
gluster volume set <volume> changelog {on|off}
- set the logging directory (<brick>/.glusterfs/changelogs is the
default)
gluster volume set <volume> changelog-dir /path/to/dir
- select encoding type (binary (default) or ascii)
gluster volume set <volume> encoding {binary|ascii}
- change the rollover time for the logs (60 secs by default)
gluster volume set <volume> rollover-time <secs>
- when secs > 0, changelog file is not open()'d with O_SYNC flag
- and fsync is trigerred periodically every <secs> seconds.
gluster volume set <volume> fsync-interval <secs>
features/changelog: changelog consumer library (libgfchangelog)
A shared library is provided for the consumer of the changelogs
for easy acess via APIs. Application can link against this library
and request for changelog updates. Conversion of binary logs to
human-readable ascii format is also taken care by the library which
keeps a copy of the changelog in application provided working
directory.
Change-Id: I75575fb7f1c53d2bec3dba1a329ea7bb3c628497
BUG: 847839
Original Author: Venky Shankar <vshankar@redhat.com>
Signed-off-by: Avra Sengupta <asengupt@redhat.com>
Reviewed-on: http://review.gluster.org/5127
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Vijay Bellur <vbellur@redhat.com>
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