| Commit message (Collapse) | Author | Age | Files | Lines |
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Add support for a new ZEROFILL fop. Zerofill writes zeroes to a file in
the specified range. This fop will be useful when a whole file needs to
be initialized with zero (could be useful for zero filled VM disk image
provisioning or during scrubbing of VM disk images).
Client/application can issue this FOP for zeroing out. Gluster server
will zero out required range of bytes ie server offloaded zeroing. In
the absence of this fop, client/application has to repetitively issue
write (zero) fop to the server, which is very inefficient method because
of the overheads involved in RPC calls and acknowledgements.
WRITESAME is a SCSI T10 command that takes a block of data as input and
writes the same data to other blocks and this write is handled
completely within the storage and hence is known as offload . Linux ,now
has support for SCSI WRITESAME command which is exposed to the user in
the form of BLKZEROOUT ioctl. BD Xlator can exploit BLKZEROOUT ioctl to
implement this fop. Thus zeroing out operations can be completely
offloaded to the storage device , making it highly efficient.
The fop takes two arguments offset and size. It zeroes out 'size' number
of bytes in an opened file starting from 'offset' position.
This patch adds zerofill support to the following areas:
- libglusterfs
- io-stats
- performance/md-cache,open-behind
- quota
- cluster/afr,dht,stripe
- rpc/xdr
- protocol/client,server
- io-threads
- marker
- storage/posix
- libgfapi
Client applications can exloit this fop by using glfs_zerofill introduced in
libgfapi.FUSE support to this fop has not been added as there is no system call
for this fop.
Changes from previous version 3:
* Removed redundant memory failure log messages
Changes from previous version 2:
* Rebased and fixed build error
Changes from previous version 1:
* Rebased for latest master
TODO :
* Add zerofill support to trace xlator
* Expose zerofill capability as part of gluster volume info
Here is a performance comparison of server offloaded zeofill vs zeroing
out using repeated writes.
[root@llmvm02 remote]# time ./offloaded aakash-test log 20
real 3m34.155s
user 0m0.018s
sys 0m0.040s
[root@llmvm02 remote]# time ./manually aakash-test log 20
real 4m23.043s
user 0m2.197s
sys 0m14.457s
[root@llmvm02 remote]# time ./offloaded aakash-test log 25;
real 4m28.363s
user 0m0.021s
sys 0m0.025s
[root@llmvm02 remote]# time ./manually aakash-test log 25
real 5m34.278s
user 0m2.957s
sys 0m18.808s
The argument log is a file which we want to set for logging purpose and
the third argument is size in GB .
As we can see there is a performance improvement of around 20% with this
fop.
Change-Id: I081159f5f7edde0ddb78169fb4c21c776ec91a18
BUG: 1028673
Signed-off-by: Aakash Lal Das <aakash@linux.vnet.ibm.com>
Signed-off-by: M. Mohan Kumar <mohan@in.ibm.com>
Reviewed-on: http://review.gluster.org/5327
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Vijay Bellur <vbellur@redhat.com>
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This is required by Geo-Replication that does auxillary mount
with client-pid as -1 (which has special treatment at specific
places in GlusterFS), to trigger xtime updates on the intermediate
master in a cascading setup.
Marker too had a check to "not" mark updates for geo-replication's
auxillary mounts. With the new geo-replication design, xtimes are
not set by the master on the slave for all entities. Due to this
cascading setups were broken.
This patch introduces "geo-replication.ignore-pid-check" option
as a "override" for the client-pid check for gsyncd's client-pid.
When this options is enabled, marker start "marking" even if the
updates are from the special client.
Geo-Replication on the detection of itself being an intermediate
master, enables this option.
Change-Id: I9f7140edd12fef5480595ee0f93f35b94cdb8345
BUG: 996371
Signed-off-by: Venky Shankar <vshankar@redhat.com>
Reviewed-on: http://review.gluster.org/5591
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Avra Sengupta <asengupt@redhat.com>
Tested-by: Avra Sengupta <asengupt@redhat.com>
Reviewed-by: Anand Avati <avati@redhat.com>
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Change-Id: Ia310af96b25f29351f3adc4bbc97aea271df7673
BUG: 987747
Signed-off-by: Venky Shankar <vshankar@redhat.com>
Reviewed-on: http://review.gluster.org/5379
Reviewed-by: Amar Tumballi <amarts@redhat.com>
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Vijay Bellur <vbellur@redhat.com>
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Change-Id: Ibd0faefecc15b6713eda28bc96794ae58aff45aa
BUG: 847839
Original Author: Amar Tumballi <amarts@redhat.com>
Signed-off-by: Avra Sengupta <asengupt@redhat.com>
Reviewed-on: http://review.gluster.org/5133
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Vijay Bellur <vbellur@redhat.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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Add support for the DISCARD file operation. Discard punches a hole
in a file in the provided range. Block de-allocation is implemented
via fallocate() (as requested via fuse and passed on to the brick
fs) but a separate fop is created within gluster to emphasize the
fact that discard changes file data (the discarded region is
replaced with zeroes) and must invalidate caches where appropriate.
BUG: 963678
Change-Id: I34633a0bfff2187afeab4292a15f3cc9adf261af
Signed-off-by: Brian Foster <bfoster@redhat.com>
Reviewed-on: http://review.gluster.org/5090
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Anand Avati <avati@redhat.com>
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Implement support for the fallocate file operation. fallocate
allocates blocks for a particular inode such that future writes
to the associated region of the file are guaranteed not to fail
with ENOSPC.
This patch adds fallocate support to the following areas:
- libglusterfs
- mount/fuse
- io-stats
- performance/md-cache,open-behind
- quota
- cluster/afr,dht,stripe
- rpc/xdr
- protocol/client,server
- io-threads
- marker
- storage/posix
- libgfapi
BUG: 949242
Change-Id: Ice8e61351f9d6115c5df68768bc844abbf0ce8bd
Signed-off-by: Brian Foster <bfoster@redhat.com>
Reviewed-on: http://review.gluster.org/4969
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Anand Avati <avati@redhat.com>
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Added code to display extra information when status command
is executed.
Information shown now are
1 Number of files synced
2 crawl time
3 total sync time
4 bytes synced
bytes synced is taken from rsync output .
--stats option of rsync gives extra infor
mation about the sync.In stats output there
is a field called Total transferred file
size which states the ammount of bytes synced .
This information is parsed from stdout output
using regular expressions.Bytes synced information
can be used to calculate throughput.
Change-Id: Id9bba9fff45ee7049bb8257c6fd918e5237e05b1
BUG: 947774
Signed-off-by: sarvotham s pai <spai@redhat.com>
Reviewed-on: http://review.gluster.org/4749
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Anand Avati <avati@redhat.com>
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... so it's easy to figure out errno caused it. As of now
it's only due to ENOSPC. Logging is done in the error handling
routine, so any further changes that require unlinking of the
timestamp file due to some error condition(s) are logged.
Change-Id: Ia59338e2e32b2adbbd1d56aa260018270f1abae9
BUG: 853911
Signed-off-by: Venky Shankar <vshankar@redhat.com>
Reviewed-on: http://review.gluster.org/4649
Reviewed-by: Csaba Henk <csaba@redhat.com>
Reviewed-by: Amar Tumballi <amarts@redhat.com>
Reviewed-by: Vijay Bellur <vbellur@redhat.com>
Tested-by: Gluster Build System <jenkins@build.gluster.com>
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Users are still using geo-rep with the old, deprecated, insecure, unsupported
ssh setup. Not their fault -- the implementation of the new method had the
following charasteristics:
- old method is possible, but with default settings it's not working
- it can be made operational by fiddling with "remote-gsyncd" tunable
- with default setting, an unhelpful, actually misleading error message is
produced
- the UI gave no hint to the changes in the ssh setup
http://review.gluster.org/4392 tried to fix these; what it accomplished was
unrestricted support to the bad practice (by making the default old setup
operational).
From this on:
- we disable the old method by reserving the "remote-gsyncd" tunable
- if the old method is attempted, give a hint what to do
Change-Id: Icade94725d8d8d2d4c89cab992d4226351637b86
BUG: 895656
Signed-off-by: Csaba Henk <csaba@redhat.com>
Reviewed-on: http://review.gluster.org/4602
Reviewed-by: Venky Shankar <vshankar@redhat.com>
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Anand Avati <avati@redhat.com>
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.. using the environment variable $PYTHON
Change-Id: Ieaad8be98b826c803268216826e250d9944c8190
BUG: 882127
Signed-off-by: Joe Julian <me@joejulian.name>
Signed-off-by: Anand Avati <avati@redhat.com>
Reviewed-on: http://review.gluster.org/4252
Tested-by: Gluster Build System <jenkins@build.gluster.com>
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Change-Id: I1c9541058c7d07786539a3266ca125a6a15287d8
BUG: 859835
Signed-off-by: Anand Avati <avati@redhat.com>
Original-author: Kacper Kowalik (Xarthisius) <xarthisius.kk@gmail.com>
Signed-off-by: Kacper Kowalik (Xarthisius) <xarthisius.kk@gmail.com>
Reviewed-on: http://review.gluster.org/3967
Tested-by: Gluster Build System <jenkins@build.gluster.com>
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... so that a mountbroker session which is initiated b/w master
and slave does not use the same log file if it's started after
a normal geo-rep session b/w master and slave. This results in
EPERM as the log file is owned by root and the geo-rep slave
process (now running as a non privileged user) does not have
access to it.
Also, having separate log file directory for mountbroker sessions
looks clean.
NOTE: geo-rep's client mount log file location remains unchanged.
Change-Id: Ic7a732e250aee5393b9c3f6ebf6dfe2c310b7fe4
BUG: 893960
Signed-off-by: Venky Shankar <vshankar@redhat.com>
Reviewed-on: http://review.gluster.org/4407
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Anand Avati <avati@redhat.com>
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http://www.python.org/dev/peps/pep-0352/ explains that the .message
property of BaseException is being removed. Most of the other exception
handlers access <Exception>.args[] which should be suitable for this
case too.
Change-Id: I1810450b78d2b3d7f8bd07f2beb02cbe9e2adecb
BUG: 888346
Signed-off-by: Niels de Vos <ndevos@redhat.com>
Reviewed-on: http://review.gluster.org/4328
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Anand Avati <avati@redhat.com>
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The gsyncd invocation that instruments the "geo-rep config" command is
multiplexed over peers to ensure the uniformity of configuration.
In general, that works well, but checkpoint setting is a special case,
because (unlike other instances of config-set) it is logged (as recording
of checkpoint events is part of the feature).
Problem is that the path components leading to the log file are
created only on the original node, where gsyncd was started.
Therefore the logging attempt will fail on the other nodes.
Fix: ignore if opening the logfile on behalf of checkpoint setting
fails with ENOENT.
Change-Id: I677f3f081bf4b9e3ba4d25d58979d86931e6beb4
BUG: 881997
Signed-off-by: Csaba Henk <csaba@redhat.com>
Reviewed-on: http://review.gluster.org/4248
Reviewed-by: Niels de Vos <ndevos@redhat.com>
Tested-by: Christos Triantafyllidis <ctrianta@redhat.com>
Reviewed-by: Christos Triantafyllidis <ctrianta@redhat.com>
Reviewed-by: Anand Avati <avati@redhat.com>
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... in gsyncd python code. Indeed, use the configuration
mechanism to set it suitably from glusterd.
Change-Id: I9fe2088b14d28588d1e64fe892740cc5755b8365
BUG: 868877
Signed-off-by: Csaba Henk <csaba@redhat.com>
Reviewed-on: http://review.gluster.org/4143
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Anand Avati <avati@redhat.com>
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tailer() in resource.py does not correctly catch exceptions from
select(). select() can raise an instance of the select.error class and
the current expression only catches ValueError (and the instance will
have reference called selecterror).
The geo-rep log contains a call trace like this:
> E [syncdutils:190:log_raise_exception] <top>: FAIL:
> Traceback (most recent call last):
> File "/usr/libexec/glusterfs/python/syncdaemon/syncdutils.py", line 216, in twrap
> tf(*aa)
> File "/usr/libexec/glusterfs/python/syncdaemon/resource.py", line 123, in tailer
> poe, _ ,_ = select([po.stderr for po in errstore], [], [], 1)
> File "/usr/libexec/glusterfs/python/syncdaemon/syncdutils.py", line 276, in select
> return eintr_wrap(oselect.select, oselect.error, *a)
> File "/usr/libexec/glusterfs/python/syncdaemon/syncdutils.py", line 269, in eintr_wrap
> return func(*a)
> error: (9, 'Bad file descriptor')
BUG: 880308
Change-Id: I2babe42918950d0e9ddb3d08fa21aa3548ccf7c5
Signed-off-by: Niels de Vos <ndevos@redhat.com>
Reviewed-on: http://review.gluster.org/4233
Reviewed-by: Peter Portante <pportant@redhat.com>
Reviewed-by: Csaba Henk <csaba@redhat.com>
Tested-by: Gluster Build System <jenkins@build.gluster.com>
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Libraries must not be listed in LDFLAGS, because _order is important_.
Details see
http://stackoverflow.com/questions/4241683/linker-flags-in-wrong-place
http://www.gentoo.org/proj/en/qa/asneeded.xml#doc_chap2_sect3
Change-Id: I0479456d6702748c555031bb20641ce430732ec7
BUG: 862082
Original-author: Jan Engelhardt <jengelh@inai.de>
Signed-off-by: Jan Engelhardt <jengelh@inai.de>
Signed-off-by: Jeff Darcy <jdarcy@redhat.com>
Reviewed-on: http://review.gluster.org/4030
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Anand Avati <avati@redhat.com>
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Automake provides a separate variable for preprocessor flags
(*_CPPFLAGS). They are already uses in a few places, so make it
consistent and use it everywhere. Note that cflags obtained from
pkg-config often are cppflags, which is why LIBXML2_CFLAGS moves with
into AM_CPPFLAGS, for example.
Change-Id: I15feed1d18b2ca497371271c4b5876d5ec6289dd
BUG: 862082
Original-author: Jan Engelhardt <jengelh@inai.de>
Signed-off-by: Jan Engelhardt <jengelh@inai.de>
Signed-off-by: Jeff Darcy <jdarcy@redhat.com>
Reviewed-on: http://review.gluster.org/4029
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Anand Avati <avati@redhat.com>
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CFLAGS
libtool will automatically add "-fPIC" to the compiler command line as
needed, so there is no need to specify it separately.
"-shared" is normally a linker flag and has an odd effect when used with
libtool --mode=compile, namely that it inhibits production of static
objects. For that however, using AC_DISABLE_STATIC is a lot simpler.
Change-Id: Ic4cba0fad18ffd985cf07f8d6951a976ae59a48f
BUG: 862082
Original-author: Jan Engelhardt <jengelh@inai.de>
Signed-off-by: Jan Engelhardt <jengelh@inai.de>
Signed-off-by: Jeff Darcy <jdarcy@redhat.com>
Reviewed-on: http://review.gluster.org/4027
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Anand Avati <avati@redhat.com>
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The "-nostartfiles" is a discouraged option and is documented to
potentially result in undesired behavior. Since I see no reason why it
should be in glusterfs, remove it.
Change-Id: I56f2b08874516ebad91447b2583ca2fb776bb7ab
BUG: 862082
Original-author: Jan Engelhardt <jengelh@inai.de>
Signed-off-by: Jan Engelhardt <jengelh@inai.de>
Signed-off-by: Jeff Darcy <jdarcy@redhat.com>
Reviewed-on: http://review.gluster.org/4018
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Anand Avati <avati@redhat.com>
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Some -D flags are present in all files, so collect them.
This adds -D${GF_HOST_OS} to some compiler command lines,
but this should not be a problem.
Change-Id: I1aeb346143d4984c9cc4f2750c465ce09af1e6ca
BUG: 862082
Original-author: Jan Engelhardt <jengelh@inai.de>
Signed-off-by: Jan Engelhardt <jengelh@inai.de>
Signed-off-by: Jeff Darcy <jdarcy@redhat.com>
Reviewed-on: http://review.gluster.org/4013
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Anand Avati <avati@redhat.com>
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GF_CFLAGS seems missing in two spots.
In one of those, adding it to libgfapi_la_CFLAGS would make it equal
to AM_CFLAGS, so remove libgfapi_la_CFLAGS there.
Change-Id: I50c22f16210ecd40371d4abb0e418c7a4f94c12f
BUG: 862082
Original-author: Jan Engelhardt <jengelh@inai.de>
Signed-off-by: Jan Engelhardt <jengelh@inai.de>
Signed-off-by: Jeff Darcy <jdarcy@redhat.com>
Reviewed-on: http://review.gluster.org/4009
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Anand Avati <avati@redhat.com>
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Changes to __gf_calloc (commit ed4b76ba) triggers a recursive
sequence of _gf_log() and __glusterfs_this_location() calls. This
is due to __gf_calloc() trying to access THIS which is not valid
in the context of geo replication binary wrapper. This patch fixes
the problem by introducing the relevant context in the wrapper.
Change-Id: I32b0b6927074692dbf66bad2f3e93434201aaa82
BUG: 846569
Signed-off-by: Venky Shankar <vshankar@redhat.com>
Reviewed-on: http://review.gluster.org/3859
Reviewed-by: Csaba Henk <csaba@redhat.com>
Tested-by: Gluster Build System <jenkins@build.gluster.com>
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* If parent inode is NULL (nameless lookups which uses gfid for looking up the
inode), then try to get it by inode_parent, instead of returning which results
in the inode's contribution not being added to the list.
* Prevent exceesive logging while adding the inode's contribution to the list
if the operation fails. (Check if the inode's gfid is null which indicates
that the inode is not yet linked to the inode table and hence addition
of its contribution to the list can fail).
Change-Id: I5300f00195ae92a5122613898ae3dabddb2d0bfe
BUG: 851953
Signed-off-by: Raghavendra Bhat <raghavendra@redhat.com>
Reviewed-on: http://review.gluster.org/3935
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Amar Tumballi <amarts@redhat.com>
Reviewed-by: Vijay Bellur <vbellur@redhat.com>
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License message changed for server-side, dual license GPLV2 and LGPLv3+.
Change-Id: Ia9e53061b9d2df3b3ef3bc9778dceff77db46a09
BUG: 852318
Signed-off-by: Varun Shastry <vshastry@redhat.com>
Reviewed-on: http://review.gluster.org/3940
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Kaleb KEITHLEY <kkeithle@redhat.com>
Reviewed-by: Anand Avati <avati@redhat.com>
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instead of passing the files to be synced as args to rsync, have rsync
read them on stdin with '-0 --files-from=-'
Change-Id: Ic3f71a0269941ce50051af8adfad183a52a79b01
BUG: 855306
Signed-off-by: Csaba Henk <csaba@redhat.com>
Reviewed-on: http://review.gluster.org/3917
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Amar Tumballi <amarts@redhat.com>
Reviewed-by: Anand Avati <avati@redhat.com>
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* ie, don't dereference dict_t pointer, instead use APIs everywhere
* other than dict_t only 'data_t' should be the valid export from dict.h
* added 'dict_foreach_fnmatch()' API
* changed dict_lookup() to use data_t, instead of data_pair_t
Change-Id: I400bb0dd55519a7c5d2a107e67c8e7a7207228dc
Signed-off-by: Amar Tumballi <amarts@redhat.com>
BUG: 850917
Reviewed-on: http://review.gluster.org/3829
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Anand Avati <avati@redhat.com>
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The license message is changed to
Copyright (c) 2008-2012 Red Hat, Inc. <http://www.redhat.com>
This file is part of GlusterFS.
This file is licensed to you under your choice of the GNU Lesser
General Public License, version 3 or any later version (LGPLv3 or
later), or the GNU General Public License, version 2 (GPLv2), in all
cases as published by the Free Software Foundation.
Change-Id: I07d2b63ed5fbbbd1884f1e74f2dd56013d15b0f4
BUG: 852318
Signed-off-by: Varun Shastry <vshastry@redhat.com>
Reviewed-on: http://review.gluster.org/3858
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Vijay Bellur <vbellur@redhat.com>
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(duplexpand): Ignore risk of overflow in computation of the realloc
object count, since we'd need a string with 2^62 space-separated tokens
to trigger that (that's w/64-bit size_t; w/32-bit it'd be easier, but
still improbable).
Change-Id: If4521afe7b46110742991dd0ee234284ef8970df
BUG: 846755
Signed-off-by: Jim Meyering <meyering@redhat.com>
Reviewed-on: http://review.gluster.com/3793
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Anand Avati <avati@redhat.com>
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Earlier fixes to 842330 changed the generic (*a, **kw) signature,
although that was not related to the issue.
We restore the generic signature as it was used for a reason
(proxy methods that do none or only algebraic transformations
on passed arguments idiomatically have generic signature, both
to serve as visual cue and agnosticism wrt. the inner API).
Change-Id: Ib609a3a58be53d78b7f1221a3c162c6aec8fd488
BUG: 842330
Signed-off-by: Csaba Henk <csaba@redhat.com>
Reviewed-on: http://review.gluster.com/3754
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Anand Avati <avati@redhat.com>
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Change-Id: I0ae81ab01418becba83e401ec36c6db5323945e8
BUG: 842330
Signed-off-by: Venky Shankar <vshankar@redhat.com>
Reviewed-on: http://review.gluster.com/3725
Tested-by: Vijay Bellur <vbellur@redhat.com>
Reviewed-by: Vijay Bellur <vbellur@redhat.com>
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This patch fixes two problems with recent changes to
Geo-Replication
First:
------
Recent changes to geo-replication relies on Rsync to tranfer
extended attributes. Essentially Rsync would invoke a listxattr()
and then getxattr() the set reutrned by listxattr() and finally
transfer it to the remote slave. Xattrs like security.selinux would
create problems as they are not allowed to be set explicitly (unless
there's a rule that allows this). So, to make Rsync behave sanely we
filter out all "*.selinux*" xattrs from listxattr() (which is getxattr()
with ->name as NULL).
Second:
-------
Python's "if {..} else {..}" shortcut ".. and .. or .." was misused here.
This is a straightforward fix by interchanging last two variables (classes
in this case). Also fix a typo in sendmark_regular() definition.
Change-Id: I097b5f5d88a36c7eef5560a78d4332948a545942
BUG: 842330
Signed-off-by: Venky Shankar <vshankar@redhat.com>
Reviewed-on: http://review.gluster.com/3714
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Vijay Bellur <vbellur@redhat.com>
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Change-Id: I6c329b895178545d16b0cb9f01ad116f5342f752
BUG: 841855
Signed-off-by: Venky Shankar <vshankar@redhat.com>
Reviewed-on: http://review.gluster.com/3706
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Vijay Bellur <vbellur@redhat.com>
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Change-Id: I164a1d1dd5f15569afd6806834119a6844949df0
BUG: 841062
Signed-off-by: Csaba Henk <csaba@redhat.com>
Reviewed-on: http://review.gluster.com/3684
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Vijay Bellur <vbellur@redhat.com>
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Note that in said mode metadata synchronization is best effort:
rsync syncs metadata at last so if rsync is interrupted in between
xattr sync and metadata sync stages, then file will be considered
in sync
Change-Id: I1c75eab33b0a1000abf3ad36b2d484a89eeda1bd
BUG: 841062
Signed-off-by: Csaba Henk <csaba@redhat.com>
Reviewed-on: http://review.gluster.com/3683
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Venky Shankar <vshankar@redhat.com>
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- add two tunables for rsync: "rsync-options" and "rsync-ssh-options"
- always pass "--no-implied-dirs" to rsync
Change-Id: I3d67a4cba8cabd681edac80e6b1fb8ea322008bd
BUG: 841062
Signed-off-by: Csaba Henk <csaba@redhat.com>
Reviewed-on: http://review.gluster.com/3682
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Vijay Bellur <vbellur@redhat.com>
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due to not using the proper Python keyword, errhandler thread
was possible to run into empty select
Signed-off-by: Csaba Henk <csaba@redhat.com>
BUG: 764678
Change-Id: I3c39e718e72545c27d50fd73aa6daf54062331b0
Reviewed-on: http://review.gluster.com/3560
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Anand Avati <avati@redhat.com>
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If a command invoked by gsyncd fails, gsyncd makes a log
of what comes out on its stderr. So far the log indeterministically
broke lines at random places. Now put some effort into reconstructing
original lines and having a faithful log.
BUG: 764678
Change-Id: I16fcc75d3e0f624c10c71d9b37c937ca677087cc
Signed-off-by: Csaba Henk <csaba@redhat.com>
Reviewed-on: http://review.gluster.com/3561
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Anand Avati <avati@redhat.com>
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Fix typo: s/buf/*buf/ in test for failed *buf = realloc...
Spotted by coverity.
Change-Id: Ie1db59956e331c3691f4ed470a3fbaf2bd2e2055
BUG: 789278
Signed-off-by: Jim Meyering <meyering@redhat.com>
Reviewed-on: http://review.gluster.com/3669
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Anand Avati <avati@redhat.com>
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See comments in http://bugzilla.redhat.com/839925 for
the code to perform this change.
Signed-off-by: Jim Meyering <meyering@redhat.com>
BUG: 839925
Change-Id: I10e4ecff16c3749fe17c2831c516737e08a3205a
Reviewed-on: http://review.gluster.com/3661
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Anand Avati <avati@redhat.com>
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Change-Id: Ic55c28c572c1878f8a223ae2fd25d301a7ef0c12
BUG: 789278
Signed-off-by: Jim Meyering <meyering@redhat.com>
Reviewed-on: http://review.gluster.com/3596
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Anand Avati <avati@redhat.com>
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Change-Id: I5d10eb92af753513eb5e5e3d7d2ad3ace57917d7
BUG: 789278
Signed-off-by: Jim Meyering <meyering@redhat.com>
Reviewed-on: http://review.gluster.com/3597
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Anand Avati <avati@redhat.com>
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There are a number of nit-level issues throughout the source with
the use of localtime and ctime. While they apparently aren't causing
too many problems, apart from the one in bz 828058, they ought to be
fixed. Among the "real" problems that are fixed in this patch:
1) general localtime and ctime not MT-SAFE. There's a non-zero chance
that another thread calling localtime (or ctime) will over-write
the static data about to be used in another thread
2) localtime(& <64-bit-type>) or ctime(& <64-bit-type>) generally
not a problem on 64-bit or little-endian 32-bit. But even though
we probably have zero users on big-ending 32-bit platforms, it's
still incorrect.
3) multiple nested calls passed as params. Last one wins, i.e. over-
writes result of prior calls.
4) Inconsistent error handling. Most of these calls are for logging,
tracing, or dumping. I submit that if an error somehow occurs in
the call to localtime or ctime, the log/trace/dump still should
still occur.
5) Appliances should all have their clocks set to UTC, and all log
entries, traces, and dumps should use GMT.
6) fix strtok(), change to strtok_r()
Other things this patch fixes/changes (that aren't bugs per se):
1) Change "%Y-%m-%d %H:%M:%S" and similar to their equivalent shorthand,
e.g. "%F %T"
2) change sizeof(timestr) to sizeof timestr. sizeof is an operator,
not a function. You don't use i +(32), why use sizeof(<var>).
(And yes, you do use parens with sizeof(<type>).)
3) change 'char timestr[256]' to 'char timestr[32]' where appropriate.
Per-thread stack is limited. Time strings are never longer than ~20
characters, so why waste 220+ bytes on the stack?
Things this patch doesn't fix:
1) hodgepodge of %Y-%m-%d %H:%M:%S versus %Y/%m/%d-%H%M%S and other
variations. It's not clear to me whether this ever matters, not to
mention 3rd party log filtering tools may already rely on a
particular format. Still it would be nice to have a single manifest
constant and have every call to localtime/strftime consistently use
the same format.
Change-Id: I827cad7bf53e57b69c0173f67abe72884249c1a9
BUG: 832173
Signed-off-by: Kaleb S. KEITHLEY <kkeithle@redhat.com>
Reviewed-on: http://review.gluster.com/3568
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Anand Avati <avati@redhat.com>
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* In general use buf->ia_gfid for gfid instead of inode's gfid
in the callbacks of the fops where new inode is created (such
as create, mkdir, mknod, symlink). In the callback path inode
would not be having the gfid within it, if it is not yet linked
to the inode table which happens in protocol/server.
Change-Id: I75b348ad152a1bcd634a4c2db34aca97956ccb21
BUG: 822067
Signed-off-by: Raghavendra Bhat <raghavendra@redhat.com>
Reviewed-on: http://review.gluster.com/3567
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Jeff Darcy <jdarcy@redhat.com>
Reviewed-by: Pranith Kumar Karampuri <pranithk@gluster.com>
Reviewed-by: Anand Avati <avati@redhat.com>
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This commit is based on Venky Shankar <vshankar@>'s
original implementation. Let us first quote Venky's
description, then we summarize changes to his work.
------
First version of failover/failback.
Failback mechanism uses two exclusive modes:
* blind-sync
This mode works with xtime pairs (both master and slave) to
identify candidated to sync the original master from the slave
* wrapup-sync
This mode is similar to the normal working of gsyncd except
that orphaned entities in the gluster volume are not assigned
xtimes. This prevents un-necessary transfer of data for such
entities.
Modes can be enabled via:
gluster volume geo-replication M S config special_sync_mode blind
gluster volume geo-replication M S config special_sync_mode wrapup
To turn off the special modes (i.e. to revert to normal gsyncd behaviour) use:
gluster volume geo-replication colon-d0 192.168.1.2::colon-d config \!special_sync_mode
------
Code has been refactored to meet following goals:
- make checkpointing work with special sync modes
- move out sync mode related conditionals from the crawl
loop and make all decisions to be made at startup
time
- be intrusive to the crawl loop to smallest possible degree
(we will have to change/revisit it for other reasons,
and the complexity of that should not increase)
So, xtime parsing/updating/evaluation that's specific to
the certain special modes are represented as mixin classes;
basic operation logic is in an abstract base class.
On startup, special-sync-mode tunable is dynamically dispatched
to the corresponding mixin and the actual master class is
derived from the chosen mixin and the ABS.
Change-Id: Ic9b8448f31ad4239a8200dc689f7d713662a67de
BUG: 830497
Signed-off-by: Csaba Henk <csaba@redhat.com>
Reviewed-on: http://review.gluster.com/3541
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Venky Shankar <vshankar@redhat.com>
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- gluster vol geo-rep M S conf checkpoint <LABEL|now>
sets a checkpoint with LABEL (the keyword "now" is special,
it's rendered to the label "as of <timestamp of current time>")
that's used to refer to the checkpoint in the sequel.
(Technically, gsyncd makes a note of the xtime of master's root
as of setting the checkpoint, called the "checkpoint target".)
- gluster vol geo-rep M S conf \!checkpoint
deletes the checkpoint.
- gluster vol geo-rep M S stat
if status is OK, and there is a checkpoint configured, the checkpoint
info is appended to status (either "not yet reached", or
"completed at <timestamp of completion>").
(Technically, the worker runs a thread that monitors / serializes /
verifies checkpoint status, and answers checkpoint status requests
through a UNIX socket; monitoring boils down to querying the xtime
of slave's root and comparing with the target.)
- gluster vol geo-rep M S conf log-file | xargs grep checkpoint
displays the checkpoint history. Set, delete and completion events
are logged properly.
Change-Id: I4398e0819f1504e6e496b4209e91a0e156e1a0f8
BUG: 826512
Signed-off-by: Csaba Henk <csaba@redhat.com>
Reviewed-on: http://review.gluster.com/3491
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Venky Shankar <vshankar@redhat.com>
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- Regarding issue of leftover ssh control dirs:
If master side worker is stuck in connection establishment
phase, have the monitor kill it softly (ie. first by SIGTERM,
to let it cleanup). This is trickier than sounds on first hearing,
because if worker is stuck in waiting for a RePCe answer
(in threading.Condition().wait()), then SIGTERM is ignored
(more precisely, Python holds it back for the wait and resends it to
itself when wait is over).
So instead of signalling the worker only, we send TERM to the
whole process group -- that brings down the ssh connection, which
wakes up the waiting worker, which then can cleanup. Only problem
is that monitor is also in the process group and it should not coomit
a suicide. That is taken care by setting up a one-time SIGTERM
handler in the monitor.
- Regarding slave gsyncd stuck in chdir:
Slave gsyncd is usually well behaved: if master does not send
keepalives, it takes care to exit. However, if a hang occurs
in early phase, when slave is to change to the gluster mountpoint,
no timeout is set up for that (and unlike on master side, neither
is there an external actor like the monitor to do that).
So, to manage this scenario, we do the chdir in a (supposedly)
short lived thread, and in the main thread we wait for the termination
of this thread. If that does not happen within the time limit, main
thread calls for cleanup and exit. (This logic explicitely takes the
appropriate action in the cases when chdir succeeds or when hangs;
but what about the remaining case, when chdir fails? Well in that case
the chdir thread's exception handler will put the process to
cleanup and exit route.)
Change-Id: I6ad6faa9c7b1c37084d171d1e1a756abaff9eba8
BUG: 786291
Signed-off-by: Csaba Henk <csaba@redhat.com>
Reviewed-on: http://review.gluster.com/3376
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Anand Avati <avati@redhat.com>
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This forces rsync to perform supposedly privileged operations on
unprivileged slaves (like chown(2)).
For consistent behavior (with gsyncd's "chown" RPC call that's
being used for symlinks and directories), we also pass
"--numeric-ids" to rsync.
Also took the chance to retire gsyncd's "--rsync-extra" option
which was there for debugging purposes (related to a resolved
issue).
Change-Id: I4ee4d0d3a8c4e0f6746d34d7722c8a567a67491c
BUG: 822121
Signed-off-by: Csaba Henk <csaba@redhat.com>
Reviewed-on: http://review.gluster.com/3426
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Anand Avati <avati@redhat.com>
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[This is a "forward port" of fafd5c17, http://review.gluster.com/2908]
The "finally" clause that was meant to cleanup after the
temp mount has not covered the case of getting signalled
(eg. by monitor, upon worker timing out).
So here we "outsource" the cleanup to an ephemeral child process.
Child calls setsid(2) so it won't be bothered by internal process
management. We use a pipe in between worker and the cleanup child;
when child sees the worker end getting closed, it performs the cleanup.
Worker end can get closed either because worker closes it (normal case),
or because worker has terminated (faulty case) -- thus as bonus, we get
a nice uniform handling with no need to differentiate between normal and
faulty cases.
The faulty case that was seen IRL -- ie., users of maintainance mounts
hang in chdir(2) to mount point -- can be simulated for testing purposes
by applying the following patch:
diff --git a/xlators/mount/fuse/src/fuse-bridge.c b/xlators/mount/fuse/src/fuse-bridge.c
index acd3c68..1ce5dc1 100644
--- a/xlators/mount/fuse/src/fuse-bridge.c
+++ b/xlators/mount/fuse/src/fuse-bridge.c
@@ -2918,7 +2918,7 @@ fuse_init (xlator_t *this, fuse_in_header_t *finh, void *msg)
if (fini->minor < 9)
*priv->msg0_len_p = sizeof(*finh) + FUSE_COMPAT_WRITE_IN_SIZE;
#endif
- ret = send_fuse_obj (this, finh, &fino);
+ ret = priv->client_pid_set ? 0 : send_fuse_obj (this, finh, &fino);
if (ret == 0)
gf_log ("glusterfs-fuse", GF_LOG_INFO,
"FUSE inited with protocol versions:"
Change-Id: I14bad56a60a7fa82d0104fa4b9a20f4e42a7186f
BUG: 786291
Signed-off-by: Csaba Henk <csaba@redhat.com>
Reviewed-on: http://review.gluster.com/3259
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Jeff Darcy <jdarcy@redhat.com>
Reviewed-by: Anand Avati <avati@redhat.com>
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