| Commit message (Collapse) | Author | Age | Files | Lines |
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Problem: Fix to https://bugzilla.redhat.com/show_bug.cgi?id=1316873 has made
changes to set dirty flag before every update fop, data or metadata, and unset
it after successful operation. That makes some of the fops very slow such as
entry operations or metadata operations.
Solution: File data operations are the only operation which take some time and
setting dirty flag before a fop and unsetting it after serves the purpose as
probability of failure of a fop is high when the time duration is more. For all
the other operations, set dirty flag at the end of the fop, if any brick is
down and need heal.
Providing following option to choose between high performance or better heal
marking for metadata and entry fops.
Set/Unset dirty flag for every update fop at the start of the fop. If ON, this
option impacts performance of entry operations or metadata operations as it
will set dirty flag at the start and unset it at the end of ALL update fop. If
OFF and all the bricks are good, dirty flag will be set at the start only for
file fops For metadata and entry fops dirty flag will not be set at the start,
if all the bricks are good. This does not impact performance for metadata
operations and entry operation but has a very small window to miss marking
entry as dirty in case it is required to be healed.
Thanks to Xavi and Ashish for the design
Picked the .t file from Ashish' patch https://review.gluster.org/16298
BUG: 1408809
Change-Id: I3ce860063f0e2901e50754dcfc3e4ed22daf819f
Signed-off-by: Pranith Kumar K <pkarampu@redhat.com>
Reviewed-on: https://review.gluster.org/16821
Smoke: Gluster Build System <jenkins@build.gluster.org>
Reviewed-by: Xavier Hernandez <xhernandez@datalab.es>
Tested-by: Xavier Hernandez <xhernandez@datalab.es>
NetBSD-regression: NetBSD Build System <jenkins@build.gluster.org>
CentOS-regression: Gluster Build System <jenkins@build.gluster.org>
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Warning found by coverity.
Change-Id: Ie755659c33a43a440dadfeb1499a2f6c08e3f625
BUG: 789278
Signed-off-by: Michael Scherer <misc@redhat.com>
Reviewed-on: https://review.gluster.org/16788
Tested-by: Michael Scherer <misc@fedoraproject.org>
Smoke: Gluster Build System <jenkins@build.gluster.org>
NetBSD-regression: NetBSD Build System <jenkins@build.gluster.org>
CentOS-regression: Gluster Build System <jenkins@build.gluster.org>
Reviewed-by: Shyamsundar Ranganathan <srangana@redhat.com>
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Problem-1
If Lookup which doesn't take any locks observes version mismatch it can't be
trusted. If we launch a heal based on this information it will lead to
self-heals which will affect I/O performance in the cases where Lookup is
wrong. Considering self-heal-daemon and operations on the inode from client
which take locks can still trigger heal we can choose to not attempt a heal on
Lookup.
Problem-2:
Fixed spurious failure of
tests/bitrot/bug-1373520.t
For the issues above, what was happening was that ec_heal_inspect()
is preventing 'name' heal to happen
Problem-3:
tests/basic/ec/ec-background-heals.t
To be honest I don't know what the problem was, while fixing
the 2 problems above, I made some changes to ec_heal_inspect() and
ec_need_heal() after which when I tried to recreate the spurious
failure it just didn't happen even after a long time.
BUG: 1414287
Signed-off-by: Pranith Kumar K <pkarampu@redhat.com>
Change-Id: Ife2535e1d0b267712973673f6d474e288f3c6834
Reviewed-on: https://review.gluster.org/16468
Smoke: Gluster Build System <jenkins@build.gluster.org>
NetBSD-regression: NetBSD Build System <jenkins@build.gluster.org>
Reviewed-by: Xavier Hernandez <xhernandez@datalab.es>
CentOS-regression: Gluster Build System <jenkins@build.gluster.org>
Reviewed-by: Ashish Pandey <aspandey@redhat.com>
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and statedump too. Also "const char *" (versus just "char *") for the
fmt param.
Change-Id: Ic63734a673208a2cd49aebccce7659816e6179e3
BUG: 1399196
Signed-off-by: Kaleb S. KEITHLEY <kkeithle@redhat.com>
Reviewed-on: https://review.gluster.org/15881
Smoke: Gluster Build System <jenkins@build.gluster.org>
NetBSD-regression: NetBSD Build System <jenkins@build.gluster.org>
CentOS-regression: Gluster Build System <jenkins@build.gluster.org>
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A few switches did not have breaks causing fall throughs. Most of them
have been fixed with fall through comments for those that are
intentional.
Change-Id: I84c85726b542f38504b50fefab5eba5dbcd27a07
BUG: 1424894
Signed-off-by: Nigel Babu <nigelb@redhat.com>
Reviewed-on: https://review.gluster.org/16677
NetBSD-regression: NetBSD Build System <jenkins@build.gluster.org>
CentOS-regression: Gluster Build System <jenkins@build.gluster.org>
Smoke: Gluster Build System <jenkins@build.gluster.org>
Reviewed-by: Jeff Darcy <jdarcy@redhat.com>
Reviewed-by: Shyamsundar Ranganathan <srangana@redhat.com>
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Since va_end is called after the out label,
we do not need to call it here, as it make va_end undefined,
and thus could cause problem. And this is a error
on cppcheck.
Change-Id: I6e96c796bd37fa3cde989996ab93f9a438c0ee74
BUG: 789278
Signed-off-by: Michael Scherer <misc@redhat.com>
Reviewed-on: https://review.gluster.org/16745
Smoke: Gluster Build System <jenkins@build.gluster.org>
Tested-by: Michael Scherer <misc@fedoraproject.org>
NetBSD-regression: NetBSD Build System <jenkins@build.gluster.org>
CentOS-regression: Gluster Build System <jenkins@build.gluster.org>
Reviewed-by: Shyamsundar Ranganathan <srangana@redhat.com>
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Coverity warn about it, and while that's unlikely
to be a issue in practice, it is rather important
to not mask more critical problems with false positive.
Change-Id: Ibee1a9c37e216635077f05d5ef5de55ad5e0b051
BUG: 789278
Signed-off-by: Michael Scherer <misc@redhat.com>
Reviewed-on: https://review.gluster.org/16727
Smoke: Gluster Build System <jenkins@build.gluster.org>
Reviewed-by: Niels de Vos <ndevos@redhat.com>
Tested-by: Niels de Vos <ndevos@redhat.com>
NetBSD-regression: NetBSD Build System <jenkins@build.gluster.org>
CentOS-regression: Gluster Build System <jenkins@build.gluster.org>
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Fix up use after free bugs and dead code
Change-Id: I8f79ed6b5108926c1fac31c147b5ecba79d10785
BUG: 1424905
Signed-off-by: Nigel Babu <nigelb@redhat.com>
Reviewed-on: https://review.gluster.org/16666
Smoke: Gluster Build System <jenkins@build.gluster.org>
NetBSD-regression: NetBSD Build System <jenkins@build.gluster.org>
CentOS-regression: Gluster Build System <jenkins@build.gluster.org>
Reviewed-by: Atin Mukherjee <amukherj@redhat.com>
Reviewed-by: Shyamsundar Ranganathan <srangana@redhat.com>
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Coverty scan complain about it, even if in practice, this
doesn't seems to have much impact.
Change-Id: I513f7d393889625d22dded25ef4c7477f68d1064
BUG: 1424793
Signed-off-by: Michael Scherer <misc@redhat.com>
Reviewed-on: https://review.gluster.org/16671
Smoke: Gluster Build System <jenkins@build.gluster.org>
Reviewed-by: Shyamsundar Ranganathan <srangana@redhat.com>
Tested-by: Nigel Babu <nigelb@redhat.com>
NetBSD-regression: NetBSD Build System <jenkins@build.gluster.org>
Reviewed-by: Atin Mukherjee <amukherj@redhat.com>
Reviewed-by: Niels de Vos <ndevos@redhat.com>
CentOS-regression: Gluster Build System <jenkins@build.gluster.org>
Reviewed-by: Poornima G <pgurusid@redhat.com>
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Issue:
Currently inode ref count is gaurded by inode_table->lock, and
inode_ctx is gauarded by inode->lock. With the new patch [1]
inode_ref was modified to change the inode_ctx to track the ref
count per xlator. Thus inode_ref performed under inode_table->lock
is modifying inode_ctx which has to be modified only under inode->lock
Solution:
When a inode is created, inode_ctx holder is allocated for all the xlators.
Hence in case of inode_ctx_set instead of using the first free index in
inode ctx holder, we can have predecided index for every xlator in the graph.
Credits Pranith K <pkarampu@redhat.com>
[1] http://review.gluster.org/13736
Change-Id: I1bfe111c211fcc4fcd761bba01dc87c4c69b5170
BUG: 1423373
Signed-off-by: Poornima G <pgurusid@redhat.com>
Reviewed-on: https://review.gluster.org/16622
Smoke: Gluster Build System <jenkins@build.gluster.org>
NetBSD-regression: NetBSD Build System <jenkins@build.gluster.org>
Reviewed-by: Niels de Vos <ndevos@redhat.com>
CentOS-regression: Gluster Build System <jenkins@build.gluster.org>
Reviewed-by: Pranith Kumar Karampuri <pkarampu@redhat.com>
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On FreeBSD the S_ISVTX flag is completely ignored when creating a
regular file. Since gluster needs to create files with this flag set,
specialy for DHT link files, it's necessary to force the flag.
This fix does this by calling fchmod() after creating a file that
must have this flag set.
Change-Id: I51eecfe4642974df6106b9084a0b144835a4997a
BUG: 1411228
Signed-off-by: Xavier Hernandez <xhernandez@datalab.es>
Reviewed-on: https://review.gluster.org/16417
Smoke: Gluster Build System <jenkins@build.gluster.org>
NetBSD-regression: NetBSD Build System <jenkins@build.gluster.org>
CentOS-regression: Gluster Build System <jenkins@build.gluster.org>
Reviewed-by: Raghavendra Bhat <raghavendra@redhat.com>
Reviewed-by: Kaleb KEITHLEY <kkeithle@redhat.com>
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The logging about translator options is so verbose that it
significantly slows down scalability tests - sometimes even to the
point where it induces timing-related failures. Quiet, please.
Change-Id: If0766e2a80746bba586e67e6019ff7084d68b425
Signed-off-by: Jeff Darcy <jdarcy@redhat.com>
Reviewed-on: https://review.gluster.org/16569
Smoke: Gluster Build System <jenkins@build.gluster.org>
NetBSD-regression: NetBSD Build System <jenkins@build.gluster.org>
CentOS-regression: Gluster Build System <jenkins@build.gluster.org>
Reviewed-by: Shyamsundar Ranganathan <srangana@redhat.com>
Reviewed-by: Milind Changire <mchangir@redhat.com>
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There's a lot of logic (and some long comments) around how to free
these structures safely, but then we didn't do it. Now we do.
Change-Id: I9731ae75c60e99cc43d33d0813a86912db97fd96
BUG: 1420571
Signed-off-by: Jeff Darcy <jdarcy@redhat.com>
Reviewed-on: https://review.gluster.org/16570
Smoke: Gluster Build System <jenkins@build.gluster.org>
NetBSD-regression: NetBSD Build System <jenkins@build.gluster.org>
CentOS-regression: Gluster Build System <jenkins@build.gluster.org>
Reviewed-by: Poornima G <pgurusid@redhat.com>
Reviewed-by: Shyamsundar Ranganathan <srangana@redhat.com>
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Early multiplexing tests revealed *massive* contention on certain
pools' global locks - especially for dictionaries and secondarily for
call stubs. For the thread counts that multiplexing can create, a
more lock-free solution is clearly needed. Also, the current mem-pool
implementation does a poor job releasing memory back to the system,
artificially inflating memory usage to match whatever the worst case
was since the process started. This is bad in general, but especially
so for multiplexing where there are more pools and a major point of
the whole exercise is to reduce memory consumption.
The basic ideas for the new design are these
There is one pool, globally, for each power-of-two size range.
Every attempt to create a new pool within this range will instead
add a reference to the existing pool.
Instead of adding pools for each translator within each multiplexed
brick (potentially infinite and quite possibly thousands), we
allocate one set of size-based pools per *thread* (hundreds at
worst).
Each per-thread pool is divided into hot and cold lists. Every
allocation first attempts to use the hot list, then the cold list.
When objects are freed, they always go on the hot list.
There is one global "pool sweeper" thread, which periodically
reclaims everything in each pool's cold list and then "demotes" the
current hot list to be the new cold list.
For normal allocation activity, only a per-thread lock need be
taken, and even that only to guard against very rare contention from
the pool sweeper. When threads start and stop, a global lock must
be taken to add them to the pool sweeper's list. Lock contention is
therefore extremely low, and the hot/cold lists also provide good
locality.
A more complete explanation (of a similar earlier design) can be found
here:
http://www.gluster.org/pipermail/gluster-devel/2016-October/051160.html
Change-Id: I5bc8a1ba57cfb553998f979a498886e0d006e665
BUG: 1385758
Signed-off-by: Jeff Darcy <jdarcy@redhat.com>
Reviewed-on: https://review.gluster.org/15645
Reviewed-by: Xavier Hernandez <xhernandez@datalab.es>
Smoke: Gluster Build System <jenkins@build.gluster.org>
NetBSD-regression: NetBSD Build System <jenkins@build.gluster.org>
CentOS-regression: Gluster Build System <jenkins@build.gluster.org>
Reviewed-by: Shyamsundar Ranganathan <srangana@redhat.com>
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statedump
Change-Id: Ia5dd718458a5e32138012f81f014d13fc6b28be2
BUG: 1415115
Signed-off-by: Raghavendra G <rgowdapp@redhat.com>
Reviewed-on: https://review.gluster.org/16440
Reviewed-by: N Balachandran <nbalacha@redhat.com>
NetBSD-regression: NetBSD Build System <jenkins@build.gluster.org>
CentOS-regression: Gluster Build System <jenkins@build.gluster.org>
Smoke: Gluster Build System <jenkins@build.gluster.org>
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Some functions were allocating 64K booleans, which are (crazily) mapped to
4-byte ints, for a total of 256KB per call. Changed to use bitfields instead,
so usage is now only 8KB per call. This was the impediment to changing the
io-threads stack size, so that has been adjusted too.
Change-Id: I8781c4f2c8f2b830f4535e366995fac8dd0a8653
BUG: 1418095
Signed-off-by: Jeff Darcy <jdarcy@redhat.com>
Reviewed-on: https://review.gluster.org/15745
Smoke: Gluster Build System <jenkins@build.gluster.org>
NetBSD-regression: NetBSD Build System <jenkins@build.gluster.org>
CentOS-regression: Gluster Build System <jenkins@build.gluster.org>
Reviewed-by: N Balachandran <nbalacha@redhat.com>
Reviewed-by: Shyamsundar Ranganathan <srangana@redhat.com>
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All of the functions called to free the refcounted structure are doing a
typecast from (void*) to their own type taht is being free'd. This
really is not needed and the refcount interface is made a little simpler
without the requirement of typecasting.
With this small improvement in the API, all callers are updated too.
Change-Id: I32473b6d1799f62861d4b2d78ea30c09e6c80ab1
BUG: 1416889
Signed-off-by: Niels de Vos <ndevos@redhat.com>
Reviewed-on: https://review.gluster.org/16471
Smoke: Gluster Build System <jenkins@build.gluster.org>
NetBSD-regression: NetBSD Build System <jenkins@build.gluster.org>
Reviewed-by: Xavier Hernandez <xhernandez@datalab.es>
CentOS-regression: Gluster Build System <jenkins@build.gluster.org>
Reviewed-by: Kaleb KEITHLEY <kkeithle@redhat.com>
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This patch adds support for multiple brick translator stacks running
in a single brick server process. This reduces our per-brick memory usage by
approximately 3x, and our appetite for TCP ports even more. It also creates
potential to avoid process/thread thrashing, and to improve QoS by scheduling
more carefully across the bricks, but realizing that potential will require
further work.
Multiplexing is controlled by the "cluster.brick-multiplex" global option. By
default it's off, and bricks are started in separate processes as before. If
multiplexing is enabled, then *compatible* bricks (mostly those with the same
transport options) will be started in the same process.
Change-Id: I45059454e51d6f4cbb29a4953359c09a408695cb
BUG: 1385758
Signed-off-by: Jeff Darcy <jdarcy@redhat.com>
Reviewed-on: https://review.gluster.org/14763
Smoke: Gluster Build System <jenkins@build.gluster.org>
NetBSD-regression: NetBSD Build System <jenkins@build.gluster.org>
CentOS-regression: Gluster Build System <jenkins@build.gluster.org>
Reviewed-by: Vijay Bellur <vbellur@redhat.com>
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With this, we will be able to trigger statedumps on remote Gluster
clients, mainly targetted for applications using libgfapi.
Design:
SIGUSR signal is the most comman way of taking a statedump in Gluster.
But it cannot be used for libgfapi based processes, as the process
loading the library might have already consumed SIGUSR signal. Hence
going by the command way.
One has to issue a Gluster command to initiate a statedump on the
libgfapi based client. The command takes hostname and PID as an
argument. All the glusterds in the cluster, check if they are connected
to the specified hostname, and send an RPC request to all the connected
clients from that hostname (via the mgmt connection).
URL: http://review.gluster.org/16357
Change-Id: Icbe4d2f026b32a2c7d5535e1bfb2cdaaff042e91
BUG: 1169302
Signed-off-by: Poornima G <pgurusid@redhat.com>
[ndevos: minor fixes and split patch in smaller pieces]
Reviewed-on: https://review.gluster.org/9228
Reviewed-by: Niels de Vos <ndevos@redhat.com>
Tested-by: Niels de Vos <ndevos@redhat.com>
Smoke: Gluster Build System <jenkins@build.gluster.org>
NetBSD-regression: NetBSD Build System <jenkins@build.gluster.org>
Reviewed-by: Kaleb KEITHLEY <kkeithle@redhat.com>
CentOS-regression: Gluster Build System <jenkins@build.gluster.org>
Reviewed-by: Samikshan Bairagya <samikshan@gmail.com>
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Debugging inode ref leaks is very difficult as there is no info
except for the ref count on the inode. Hence this patch is first step
towards debugging inode ref leaks. With this patch, in the statedump
we get additional info that tells the ref count taken by each xlator
on the inode.
Change-Id: I7802f7e7b13c04eb4d41fdf52d5469fd2c2a185a
BUG: 1325531
Signed-off-by: Poornima G <pgurusid@redhat.com>
Reviewed-on: http://review.gluster.org/13736
CentOS-regression: Gluster Build System <jenkins@build.gluster.org>
NetBSD-regression: NetBSD Build System <jenkins@build.gluster.org>
Reviewed-by: Pranith Kumar Karampuri <pkarampu@redhat.com>
Smoke: Gluster Build System <jenkins@build.gluster.org>
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tierd is implemented by separating from rebalance process.
The commands affected:
1) Attach tier will trigger this process instead of old one
2) tier start and tier start force will also trigger this process.
3) volume status [tier] will show tier daemon as a process instead
of task and normal tier status and tier detach status works.
4) tier stop implemented.
5) detach tier implemented separately along with new detach tier
status
6) volume tier volname status will work using the changes.
7) volume set works
This patch has separated the tier translator from the legacy
DHT rebalance code. It now sends the RPCs from the CLI
to glusterd separate to the DHT rebalance code.
The daemon is now a service, similar to the snapshot daemon,
and can be viewed using the volume status command.
The code for the validation and commit phase are the same
as the earlier tier validation code in DHT rebalance.
The “brickop” phase has been changed so that the status
command can use this framework.
The service management framework is now used.
DHT rebalance does not use this framework.
This service framework takes care of :
*) spawning the daemon, killing it and other such processes.
*) volume set options , which are written on the volfile.
*) restart and reconfigure functions. Restart is to restart
the daemon at two points
1)after gluster goes down and comes up.
2) to stop detach tier.
*) reconfigure is used to make immediate volfile changes.
By doing this, we don’t restart the daemon.
it has the code to rewrite the volfile for topological
changes too (which comes into place during add and remove brick).
With this patch the log, pid, and volfile are separated
and put into respective directories.
Change-Id: I3681d0d66894714b55aa02ca2a30ac000362a399
BUG: 1313838
Signed-off-by: hari gowtham <hgowtham@redhat.com>
Reviewed-on: http://review.gluster.org/13365
Smoke: Gluster Build System <jenkins@build.gluster.org>
Tested-by: hari gowtham <hari.gowtham005@gmail.com>
CentOS-regression: Gluster Build System <jenkins@build.gluster.org>
NetBSD-regression: NetBSD Build System <jenkins@build.gluster.org>
Reviewed-by: Dan Lambright <dlambrig@redhat.com>
Reviewed-by: Atin Mukherjee <amukherj@redhat.com>
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FreeBSD interprets statvfs' f_bsize field in a different way than Linux.
This fix modifies the value returned by statvfs() on FreeBSD to match
the expected value by Gluster.
Change-Id: I930dab6e895671157238146d333e95874ea28a08
BUG: 1356076
Signed-off-by: Xavier Hernandez <xhernandez@datalab.es>
Reviewed-on: http://review.gluster.org/16361
Smoke: Gluster Build System <jenkins@build.gluster.org>
NetBSD-regression: NetBSD Build System <jenkins@build.gluster.org>
Reviewed-by: Kaleb KEITHLEY <kkeithle@redhat.com>
CentOS-regression: Gluster Build System <jenkins@build.gluster.org>
Reviewed-by: Jeff Darcy <jdarcy@redhat.com>
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Issue:
frame has a void * cookie pointer.
In case of STACK_WIND_COOKIE frame->cookie is assigned
to what is sent by the caller.
In case of STACK_WIND frame->cookie is assigned to point
point to the frame itself.
For ease of coding, at many places, the cookie in the cbk
is used to get the pointer to the next xl. This is
inconsistent when STACK_WIND_TAIL comes into picture.
Eg: dht_setxattr () {
for (i = 0 ; i < conf->subvolume_cnt ; i++) {
STACK_WIND (..dht_checking_pathinfo_cbk,
conf->subvolumes[i] ..);
}
dht_checking_pathinfo_cbk (...void *cookie...) {
prev = cookie;
...
for (i = 0; i < conf->subvolume_cnt; i++) {
if (conf->subvolumes[i] == prev->this) {
...
}
}
}
Consider the below graph:
dht (parent)
readdir-ahead => Doesn't define setxattr and uses STACK_WIND_TAIL
protocol-client
With this graph, when dht_checking_pathinfo_cbk is called,
cookie will have frame pointing to protocol-client.
i.e. prev->this will be protocol-client. But dht was expecting
it to be readdir-ahead as it has stored in conf->subvolumes[i]
Solution:
Hence, as a thumb rule, if cbk is using cookie, then we explicitly
call STACK_WIND_COOKIE.
Change-Id: I83aea1e24c809c5a91a0db7283e908e125471bd4
BUG: 1401812
Signed-off-by: Poornima G <pgurusid@redhat.com>
Reviewed-on: http://review.gluster.org/16039
Reviewed-by: Raghavendra G <rgowdapp@redhat.com>
Smoke: Gluster Build System <jenkins@build.gluster.org>
NetBSD-regression: NetBSD Build System <jenkins@build.gluster.org>
CentOS-regression: Gluster Build System <jenkins@build.gluster.org>
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gluster volume get <VOLNAME> cluster.opversion gives us the current
op-version on which the cluster is operating. There is no command
that lets the user know the maximum supported op-version that the
cluster can run on.
This patch adds a new global option cluster.max-op-version, that
can be used to retrieve the maximum supported op-version in a
cluster.
Usage:
# gluster volume get all cluster.max-op-version
Example output:
Option Value
------ -----
cluster.max-op-version 30900
NOTE: The only way to test this feature for now is to set the
GD_OP_VERSION_MAX macro to different values (30800 for 3.8,30900
for 3.9, and so on) and rebuild glusterd. Since the regression test
framework currently doesn't have support to simulate these tests,
there are no accompanying regression tests for this feature. It
should be possible to add tests once glusto comes in and makes it
easier to run a heterogeneous cluster.
Change-Id: I547480ee5e7912664784643e436feb198b6d16d0
BUG: 1365822
Signed-off-by: Samikshan Bairagya <samikshan@gmail.com>
Reviewed-on: http://review.gluster.org/16283
Smoke: Gluster Build System <jenkins@build.gluster.org>
NetBSD-regression: NetBSD Build System <jenkins@build.gluster.org>
CentOS-regression: Gluster Build System <jenkins@build.gluster.org>
Reviewed-by: Atin Mukherjee <amukherj@redhat.com>
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When overwriting an existing file with O_TRUNC, the 'atime' was set to
0, meaning the Epoch (01-Jan-1970 UTC). However, the 'mtime' gets
updated correcty.
In case 'atime' or 'mtime' is not passed in the 'struct iatt', the time
values passed to the systemcall are taken from the current values are
returned by lstat().
Change-Id: I7021b7161dcd6c9a3e515d98f6d4847533c434b3
BUG: 1401777
Reported-by: Eivind Sarto <eivindsarto@gmail.com>
Signed-off-by: Niels de Vos <ndevos@redhat.com>
Reviewed-on: http://review.gluster.org/16034
Smoke: Gluster Build System <jenkins@build.gluster.org>
NetBSD-regression: NetBSD Build System <jenkins@build.gluster.org>
Reviewed-by: Raghavendra Bhat <raghavendra@redhat.com>
CentOS-regression: Gluster Build System <jenkins@build.gluster.org>
Reviewed-by: Kaleb KEITHLEY <kkeithle@redhat.com>
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Issue:
In disperse volume, the file is present across bricks, hence the stat
from one brick doesn't carry the valid size of the file. Therefore
the upcall from one brick updating the md-cache results in wrong size
being updated.
Fix:
If the notification is cache invalidation then, indicate md-cache that
the attributes is invalid.
BUG: 1410375
Change-Id: Id89d2283478e70b62b435a8891fffc86d2be8cb2
Signed-off-by: Poornima G <pgurusid@redhat.com>
Reviewed-on: http://review.gluster.org/16329
Smoke: Gluster Build System <jenkins@build.gluster.org>
NetBSD-regression: NetBSD Build System <jenkins@build.gluster.org>
Reviewed-by: Xavier Hernandez <xhernandez@datalab.es>
CentOS-regression: Gluster Build System <jenkins@build.gluster.org>
Reviewed-by: Pranith Kumar Karampuri <pkarampu@redhat.com>
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These functions do not generally "expect" to be called more than once
in parallel, and many are likely to misbehave in that case (one case
in DHT already). Such parallel calls have not generally happened
because there are only a few places where we call these functions, and
those have been implicitly serialized until recently. However, recent
changes in the epoll layer change that, as does brick multiplexing.
Therefore, the serialization is now explicit at the init/reconfigure
level.
It would be sufficient to serialize calls to a particular translator's
init and reconfigure functions, but that would require per-translator
locks and a bit more complexity in maintaining/using them. Since
there's no clear reason why we would need or want to support a higher
level of parallelism, the simpler approach of a global lock should
suffice.
Change-Id: I26296c2826e91dc00b7f0c2061bcc2964ef90c4c
BUG: 1399134
Signed-off-by: Jeff Darcy <jdarcy@redhat.com>
Reviewed-on: http://review.gluster.org/16030
Smoke: Gluster Build System <jenkins@build.gluster.org>
NetBSD-regression: NetBSD Build System <jenkins@build.gluster.org>
CentOS-regression: Gluster Build System <jenkins@build.gluster.org>
Reviewed-by: Raghavendra G <rgowdapp@redhat.com>
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`gethostbyname` is not thread safe. Use `getaddrinfo` to avoid
any race or segfault while sending events
BUG: 1410313
Change-Id: I164af1f8eb72501fb0ed47445e68d896f7c3e908
Signed-off-by: Aravinda VK <avishwan@redhat.com>
Reviewed-on: http://review.gluster.org/16327
Reviewed-by: Atin Mukherjee <amukherj@redhat.com>
NetBSD-regression: NetBSD Build System <jenkins@build.gluster.org>
CentOS-regression: Gluster Build System <jenkins@build.gluster.org>
Smoke: Gluster Build System <jenkins@build.gluster.org>
Reviewed-by: Raghavendra G <rgowdapp@redhat.com>
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Summary:
Passing --disable-mempool to configure will disable the mempool.
Change-Id: I60d5f70d54de507fe9f4695d7589f7ae1ba4bb0f
BUG: 1405165
Signed-off-by: Shreyas Siravara <sshreyas@fb.com>
Reviewed-on: http://review.gluster.org/16148
Smoke: Gluster Build System <jenkins@build.gluster.org>
Tested-by: Jeff Darcy <jdarcy@redhat.com>
Reviewed-by: Niels de Vos <ndevos@redhat.com>
Reviewed-by: Kaleb KEITHLEY <kkeithle@redhat.com>
CentOS-regression: Gluster Build System <jenkins@build.gluster.org>
Reviewed-by: Anoop C S <anoopcs@redhat.com>
NetBSD-regression: NetBSD Build System <jenkins@build.gluster.org>
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This patch introduces a new option called "rda-cache-limit", which is
the maximum value the entire readdir-ahead cache can grow into. Since,
readdir-ahead holds a reference to inode through dentries, this patch
also accounts memory stored by various xlators in inode contexts.
Change-Id: I84cc0ca812f35e0f9041f8cc71effae53a9e7f99
BUG: 1356960
Signed-off-by: Raghavendra G <rgowdapp@redhat.com>
Reviewed-on: http://review.gluster.org/16137
NetBSD-regression: NetBSD Build System <jenkins@build.gluster.org>
Reviewed-by: Poornima G <pgurusid@redhat.com>
Smoke: Gluster Build System <jenkins@build.gluster.org>
CentOS-regression: Gluster Build System <jenkins@build.gluster.org>
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Problem:
Rename does two locks. There is a case where when it tries to unlock it sends
xattrop of the directory with new version, callback of these two xattrops can
be picked up by two separate epoll threads. Both of them will try to set the
lk-owner for unlock in parallel on the same frame so one of these unlocks will
fail because the lk-owner doesn't match.
Fix:
Specify the lk-owner which will be set on inodelk frame which will not be over
written by any other thread/operation.
BUG: 1402710
Change-Id: I666ffc931440dc5253d72df666efe0ef1d73f99a
Signed-off-by: Pranith Kumar K <pkarampu@redhat.com>
Reviewed-on: http://review.gluster.org/16074
Reviewed-by: Xavier Hernandez <xhernandez@datalab.es>
Smoke: Gluster Build System <jenkins@build.gluster.org>
NetBSD-regression: NetBSD Build System <jenkins@build.gluster.org>
CentOS-regression: Gluster Build System <jenkins@build.gluster.org>
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There are no real users of the counter. It was thought of a handy tool
to track and debug refcounting, but it is not used at all. Some parts of
the code would benefit from a pointer getting returned instead.
BUG: 1399780
Change-Id: I97e52c48420fed61be942ea27ff4849b803eed12
Signed-off-by: Niels de Vos <ndevos@redhat.com>
Reviewed-on: http://review.gluster.org/15971
Smoke: Gluster Build System <jenkins@build.gluster.org>
NetBSD-regression: NetBSD Build System <jenkins@build.gluster.org>
CentOS-regression: Gluster Build System <jenkins@build.gluster.org>
Reviewed-by: Xavier Hernandez <xhernandez@datalab.es>
Reviewed-by: Kaleb KEITHLEY <kkeithle@redhat.com>
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Problem:
The issue as seen by the user is detailed in the BZ but what is
happening is if the no. of items in the wait queue == max-qlen,
syncop_mt_dir_scan() does a pthread_cond_wait until the launched
synctask workers dequeue the queue. But if for some reason the worker
fails, the queue is never emptied due to which further invocations of
syncop_mt_dir_scan() are blocked forever.
Fix: Made some changes to _dir_scan_job_fn
- If a worker encounters error while processing an entry, notify the
readdir loop in syncop_mt_dir_scan() of the error but continue to process
other entries in the queue, decrementing the qlen as and when we dequeue
elements, and ending only when the queue is empty.
- If the readdir loop in syncop_mt_dir_scan() gets an error form the
worker, stop the readdir+queueing of further entries.
Change-Id: I39ce073e01a68c7ff18a0e9227389245a6f75b88
BUG: 1402841
Signed-off-by: Ravishankar N <ravishankar@redhat.com>
Reviewed-on: http://review.gluster.org/16073
Smoke: Gluster Build System <jenkins@build.gluster.org>
NetBSD-regression: NetBSD Build System <jenkins@build.gluster.org>
CentOS-regression: Gluster Build System <jenkins@build.gluster.org>
Reviewed-by: Pranith Kumar Karampuri <pkarampu@redhat.com>
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Problem:
glusterd crashes when geo-rep mountbroker setup is
created if the slave user length is more than
8 characters.
Cause:
_POSIX_LOGIN_NAME_MAX is used which is 9 including
NULL byte.
Analysis:
While the man page says it sufficient for portability, but
acutally it's not. Linux allows the creation of username
upto 32 characters by default where the max length is 256.
And NetBSD's max is 17.
Linux:
#getconf LOGIN_NAME_MAX
256
NetBSD:
#getconf LOGIN_NAME_MAX
17
Fix:
Use LOGIN_NAME_MAX instead of _POSIX_LOGIN_NAME_MAX
Change-Id: I26b7230433ecbbed6e6914ed39221a478c0266a8
BUG: 1368138
Signed-off-by: Kotresh HR <khiremat@redhat.com>
Reviewed-on: http://review.gluster.org/16053
Smoke: Gluster Build System <jenkins@build.gluster.org>
NetBSD-regression: NetBSD Build System <jenkins@build.gluster.org>
CentOS-regression: Gluster Build System <jenkins@build.gluster.org>
Reviewed-by: Aravinda VK <avishwan@redhat.com>
Reviewed-by: Atin Mukherjee <amukherj@redhat.com>
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Upcall as a part of setattr, sends an invalidation and the
invalidation carries the resulting stat value. When a file
is converted to linkto files, even then an invalidation
is set and as a result the mountpoint shows the sticky
bit in the stat of the file.
eg: ---------T. 945 root root 0 Nov 8 10:14 hardlink.999
Fix:
When dht recieves a notification of sticky bit change, it updates
the flag, to indicate md-cache to send the subsequent lookup.
Change-Id: Ic2fd7a5b196db0754f9b97072e644e6bf69da606
BUG: 1392713
Signed-off-by: Poornima G <pgurusid@redhat.com>
Reviewed-on: http://review.gluster.org/15789
Smoke: Gluster Build System <jenkins@build.gluster.org>
NetBSD-regression: NetBSD Build System <jenkins@build.gluster.org>
Reviewed-by: Niels de Vos <ndevos@redhat.com>
CentOS-regression: Gluster Build System <jenkins@build.gluster.org>
Reviewed-by: Susant Palai <spalai@redhat.com>
Reviewed-by: Rajesh Joseph <rjoseph@redhat.com>
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Correct the op-version for tier-query-limit option from 3.9.0 to 3.9.1
Change-Id: I3a52a94c2708a97c18377e945d559a51d8025c41
BUG: 1366648
Signed-off-by: Milind Changire <mchangir@redhat.com>
Reviewed-on: http://review.gluster.org/15990
Reviewed-by: Dan Lambright <dlambrig@redhat.com>
Smoke: Gluster Build System <jenkins@build.gluster.org>
NetBSD-regression: NetBSD Build System <jenkins@build.gluster.org>
CentOS-regression: Gluster Build System <jenkins@build.gluster.org>
Reviewed-by: Atin Mukherjee <amukherj@redhat.com>
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Issue:
=====
In certain cases, there was no unwind of read
from read-ahead xlator, thus resulting in hang.
RCA:
====
In certain cases, ioc_readv() issues STACK_WIND_TAIL() instead
of STACK_WIND(). One such case is when inode_ctx for that file
is not present (can happen if readdirp was called, and populates
md-cache and serves all the lookups from cache).
Consider the following graph:
...
io-cache (parent)
|
readdir-ahead
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read-ahead
...
Below is the code snippet of ioc_readv calling STACK_WIND_TAIL:
ioc_readv()
{
...
if (!inode_ctx)
STACK_WIND_TAIL (frame, FIRST_CHILD (frame->this),
FIRST_CHILD (frame->this)->fops->readv, fd,
size, offset, flags, xdata);
/* Ideally, this stack_wind should wind to readdir-ahead:readv()
but it winds to read-ahead:readv(). See below for
explaination.
*/
...
}
STACK_WIND_TAIL (frame, obj, fn, ...)
{
frame->this = obj;
/* for the above mentioned graph, frame->this will be readdir-ahead
* frame->this = FIRST_CHILD (frame->this) i.e. readdir-ahead, which
* is as expected
*/
...
THIS = obj;
/* THIS will be read-ahead instead of readdir-ahead!, as obj expands
* to "FIRST_CHILD (frame->this)" and frame->this was pointing
* to readdir-ahead in the previous statement.
*/
...
fn (frame, obj, params);
/* fn will call read-ahead:readv() instead of readdir-ahead:readv()!
* as fn expands to "FIRST_CHILD (frame->this)->fops->readv" and
* frame->this was pointing ro readdir-ahead in the first statement
*/
...
}
Thus, the readdir-ahead's readv() implementation will be skipped, and
ra_readv() will be called with frame->this = "readdir-ahead" and
this = "read-ahead". This can lead to corruption / hang / other problems.
But in this perticular case, when 'frame->this' and 'this' passed
to ra_readv() doesn't match, it causes ra_readv() to call ra_readv()
again!. Thus the logic of read-ahead readv() falls apart and leads to
hang.
Solution:
=========
Modify STACK_WIND_TAIL() as:
STACK_WIND_TAIL (frame, obj, fn, ...)
{
next_xl = obj /* resolve obj as the variables passed in obj macro
can be overwritten in the further instrucions */
next_xl_fn = fn /* resolve fn and store in a tmp variable, before
modifying any variables */
frame->this = next_xl;
...
THIS = next_xl;
...
next_xl_fn (frame, next_xl, params);
...
}
As a part of http://review.gluster.org/15901/ the caller io-cache
was fixed.
BUG: 1388292
Change-Id: Ie662ac8f18fa16909376f1e59387bc5b886bd0f9
Signed-off-by: Poornima G <pgurusid@redhat.com>
Reviewed-on: http://review.gluster.org/15923
Smoke: Gluster Build System <jenkins@build.gluster.org>
NetBSD-regression: NetBSD Build System <jenkins@build.gluster.org>
Reviewed-by: Rajesh Joseph <rjoseph@redhat.com>
CentOS-regression: Gluster Build System <jenkins@build.gluster.org>
Reviewed-by: Raghavendra G <rgowdapp@redhat.com>
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mempool is added to ctx pool list without any lock. This can cause undefined
behaviour in case of multithreaded environment.
Fix: modify the list only under ctx->lock
Change-Id: I7bdbb3db48a899bb0e41427e149b13c0facaedba
Signed-off-by: Rajesh Joseph <rjoseph@redhat.com>
BUG: 1394719
Reviewed-on: http://review.gluster.org/15842
NetBSD-regression: NetBSD Build System <jenkins@build.gluster.org>
Smoke: Gluster Build System <jenkins@build.gluster.org>
CentOS-regression: Gluster Build System <jenkins@build.gluster.org>
Reviewed-by: Raghavendra Talur <rtalur@redhat.com>
Reviewed-by: Shyamsundar Ranganathan <srangana@redhat.com>
Reviewed-by: Poornima G <pgurusid@redhat.com>
Reviewed-by: Niels de Vos <ndevos@redhat.com>
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Currently these are few events related to child_up/down:
GF_EVENT_CHILD_UP : Issued when any of the protocol client
connects.
GF_EVENT_CHILD_MODIFIED : Issued by afr/dht/ec
GF_EVENT_CHILD_DOWN : Issued when any of the protocol client
disconnects.
These events get modified at the dht/afr/ec layers. Here is a
brief on the same.
DHT:
- All the subvolumes reported once, and atleast one child came
up, then GF_EVENT_CHILD_UP is issued
- connect GF_EVENT_CHILD_UP is issued
- disconnect GF_EVENT_CHILD_MODIFIED is issued
- All the subvolumes disconnected, GF_EVENT_CHILD_DOWN is issued
AFR:
- First subvolume came up, then GF_EVENT_CHILD_UP is issued
- Subsequent subvolumes coming up, results in GF_EVENT_CHILD_MODIFIED
- Any of the subvolumes go down, then GF_EVENT_SOME_CHILD_DOWN is issued
- Last up subvolume goes down, then GF_EVENT_CHILD_DOWN is issued
Until the patch [1] introduced GF_EVENT_SOME_CHILD_UP,
GF_EVENT_CHILD_MODIFIED was issued by afr/dht when any of the subvolumes
go up or down.
Now with md-cache changes, there is a necessity to differentiate between
child up and down. Hence, introducing GF_EVENT_SOME_DESCENDENT_DOWN/UP and
getting rid of GF_EVENT_CHILD_MODIFIED.
[1] http://review.gluster.org/12573
Change-Id: I704140b6598f7ec705493251d2dbc4191c965a58
BUG: 1396038
Signed-off-by: Poornima G <pgurusid@redhat.com>
Reviewed-on: http://review.gluster.org/15764
CentOS-regression: Gluster Build System <jenkins@build.gluster.org>
NetBSD-regression: NetBSD Build System <jenkins@build.gluster.org>
Smoke: Gluster Build System <jenkins@build.gluster.org>
Reviewed-by: N Balachandran <nbalacha@redhat.com>
Reviewed-by: Pranith Kumar Karampuri <pkarampu@redhat.com>
Reviewed-by: Rajesh Joseph <rjoseph@redhat.com>
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Raghavendra G found that posix is trying to print %s
but passing an int when HEALTH_CHECK fails in posix.
These are the kind of bugs that should be caught
at compilation itself.
Also fixed the problematic gf_event() callers.
BUG: 1386097
Change-Id: Id7bd6d9a9690237cec3ca1aefa2aac085e8a1270
Signed-off-by: Pranith Kumar K <pkarampu@redhat.com>
Reviewed-on: http://review.gluster.org/15671
Smoke: Gluster Build System <jenkins@build.gluster.org>
NetBSD-regression: NetBSD Build System <jenkins@build.gluster.org>
Reviewed-by: Atin Mukherjee <amukherj@redhat.com>
CentOS-regression: Gluster Build System <jenkins@build.gluster.org>
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It is becoming increasingly difficult to debug the reason why posix-acl decides
to fail a fop with EACCES. This patch prints a big log everytime such
a condition occurs giving out the details that may help in finding why the fop
is errored out.
Change-Id: I2505baaafb5d77ef6c187554ff027df9b20468db
BUG: 1394548
Signed-off-by: Pranith Kumar K <pkarampu@redhat.com>
Reviewed-on: http://review.gluster.org/15837
Smoke: Gluster Build System <jenkins@build.gluster.org>
NetBSD-regression: NetBSD Build System <jenkins@build.gluster.org>
CentOS-regression: Gluster Build System <jenkins@build.gluster.org>
Reviewed-by: Raghavendra Talur <rtalur@redhat.com>
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Problem:
At the moment from which xlator the errors are stemming from is a mystery.
Fix:
With this patch we can find on the server side which xlator first gave
the errno received by server xlator. I am not yet sure how to get this
done for client side which has lot of copy_frame()s. May be another
patch.
Change-Id: Ie13307b965facf2a496123e81ce0bd6756f98ac9
BUG: 1394548
Signed-off-by: Pranith Kumar K <pkarampu@redhat.com>
Reviewed-on: http://review.gluster.org/15836
Smoke: Gluster Build System <jenkins@build.gluster.org>
NetBSD-regression: NetBSD Build System <jenkins@build.gluster.org>
Reviewed-by: Vijay Bellur <vbellur@redhat.com>
CentOS-regression: Gluster Build System <jenkins@build.gluster.org>
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In case of a failed fop, the failure is detected
by the leader in the jbr-server in two places. First
during a quorum check of +ve responses when it
receives responses from all the followers. At this
point if the fop hasn't been successfully journaled
at a quorum of followers (as in there is no merit in
trying the fop in the leader as the quorum will never
be met), then we fail the fop.
Also if this quorum is met, then the fop is tried on
the leader, and after the leader completes the fop
a quorum check similar to the previous one is done
again, this time including the leaders outcome. If
quorum is not met, then we fail the fop.
In both these cases, when the fop fails we send a -ve
ack to the client. With this patch, now we will also
send a rollback through a GF_FOP_IPC to all the followers(and
also to the leader in the second case of failure). This
rollback will contain the index and term number of the
fop which failed. This will be recorded in the respective
journals of the bricks and will be used to rollback the
fop on that brick later.
A subsequent write, and it's respective rollback would
look something like the following in the journal.
The trusted.jbr.term and trusted.jbr.index present in the
dict of both the logs, relate them, and the presence of
"rollback-fop" in the dict of IPC indicates that it is a
rollback fop, and the value 13(stands for GF_FOP_WRITE)
indicates what kind of rollback operation it is.
=== GF_FOP_WRITE
fd = <gfid 77f12ea2-ca56-40e3-a46e-ba2308baa035>
vector = <158 bytes>
offset = 0 (0x0)
flags = 32769 (0x8001)
xdata = dict {
trusted.jbr.term = 0 <2 bytes>
trusted.jbr.index = 4 <2 bytes>
}
=== GF_FOP_IPC
xdata = dict {
trusted.jbr.term = 0 <2 bytes>
trusted.jbr.index = 4 <2 bytes>
rollback-fop = 13 <3 bytes>
}
Change-Id: I70b6a143d20697153d58e2f719e34ecd1ed160a5
BUG: 1349385
Signed-off-by: Avra Sengupta <asengupt@redhat.com>
Reviewed-on: http://review.gluster.org/14783
NetBSD-regression: NetBSD Build System <jenkins@build.gluster.org>
CentOS-regression: Gluster Build System <jenkins@build.gluster.org>
Reviewed-by: Jeff Darcy <jdarcy@redhat.com>
Smoke: Gluster Build System <jenkins@build.gluster.org>
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On a sharded volume when a brick is replaced while IO is going on, named
lookup on individual shards as part of read/write was failing with
ENOENT on the replaced brick, and as a result AFR initiated name heal in
lookup callback. But since pargfid was empty (which is what this patch
attempts to fix), the resolution of the shards by protocol/server used
to fail and the following pattern of logs was seen:
Brick-logs:
[2016-11-08 07:41:49.387127] W [MSGID: 115009]
[server-resolve.c:566:server_resolve] 0-rep-server: no resolution type
for (null) (LOOKUP)
[2016-11-08 07:41:49.387157] E [MSGID: 115050]
[server-rpc-fops.c:156:server_lookup_cbk] 0-rep-server: 91833: LOOKUP(null)
(00000000-0000-0000-0000-000000000000/16d47463-ece5-4b33-9c93-470be918c0f6.82)
==> (Invalid argument) [Invalid argument]
Client-logs:
[2016-11-08 07:41:27.497687] W [MSGID: 114031]
[client-rpc-fops.c:2930:client3_3_lookup_cbk] 2-rep-client-0: remote
operation failed. Path: (null) (00000000-0000-0000-0000-000000000000)
[Invalid argument]
[2016-11-08 07:41:27.497755] W [MSGID: 114031]
[client-rpc-fops.c:2930:client3_3_lookup_cbk] 2-rep-client-1: remote
operation failed. Path: (null) (00000000-0000-0000-0000-000000000000)
[Invalid argument]
[2016-11-08 07:41:27.498500] W [MSGID: 114031]
[client-rpc-fops.c:2930:client3_3_lookup_cbk] 2-rep-client-2: remote
operation failed. Path: (null) (00000000-0000-0000-0000-000000000000)
[Invalid argument]
[2016-11-08 07:41:27.499680] E [MSGID: 133010]
Also, this patch makes AFR by itself choose a non-NULL pargfid even if
its ancestors fail to initialize all pargfid placeholders.
Change-Id: I5f85b303ede135baaf92e87ec8e09941f5ded6c1
BUG: 1392445
Signed-off-by: Krutika Dhananjay <kdhananj@redhat.com>
Reviewed-on: http://review.gluster.org/15788
CentOS-regression: Gluster Build System <jenkins@build.gluster.org>
NetBSD-regression: NetBSD Build System <jenkins@build.gluster.org>
Reviewed-by: Ravishankar N <ravishankar@redhat.com>
Reviewed-by: Pranith Kumar Karampuri <pkarampu@redhat.com>
Smoke: Gluster Build System <jenkins@build.gluster.org>
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Break tier_migrate_using_query_file() into a more manageable
tier_migrate_link() and helpers.
Change-Id: I5eb2d2cff9e7a2a2da567c3c4c2d53aab195f477
BUG: 1358296
Signed-off-by: Milind Changire <mchangir@redhat.com>
Reviewed-on: http://review.gluster.org/14957
Smoke: Gluster Build System <jenkins@build.gluster.org>
NetBSD-regression: NetBSD Build System <jenkins@build.gluster.org>
CentOS-regression: Gluster Build System <jenkins@build.gluster.org>
Reviewed-by: Dan Lambright <dlambrig@redhat.com>
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Problem:
Consider a replica setup, where one mount writes data to a
file and the other mount reads the file. In afr, read operations
are not transaction based, a brick(read subvolume) is chosen as
a part of lookup or other operations, read is always wound only
to the read subvolume, even if there was write from a different client
that failed on this brick. This stale read continues until there is
a lookup or any write operation from the mount point. Currently, this
is not a major issue, as a lookup is issued before every read and it will
switch the read subvolume to a correct one. But with the plan of
increasing md-cache timeout to 600s, the stale read problem will be
more pronounced, i.e. stale read can continue for 600s(or more if cascaded
with readdirp), as there will be no lookups.
Solution:
Afr doesn't have any built-in solution for stale read(without affecting
the performance). The solution that came up, was to use upcall. When a file
on any brick is marked bad for the first time, upcall sends a notification
to all the clients that had recently accessed the file. The solution has
2 parts:
- Identifying when a file is marked bad, on any of the bricks,
for the first time
- Client side actions on recieving the notifications
Identifying when a file is marked bad on any of the bricks for the first time:
-----------------------------------------------------------------------------
The idea is to track xattrop in upcall. xattrop currently comes with 2 afr
xattrs - afr dirty bit and afr pending xattrs.
Dirty xattr is set to 1 before every write, and is unset if write succeeds.
In certain scenarios, dirty xattr can be 0 and still the file could be bad
copy. Hence do not track dirty xattr.
Pending xattr is set on the good copy, indicating the other bricks that have
bad copy. It is still not as simple as, notifying when any of the pending xattrs
change. It could lead to flood of notifcations, in case the other brick is
completely down or consistantly failing. Hence it is important to notify only
once, the first time a good copy is marked bad.
Client side actions on recieving pending xattr change, notification:
--------------------------------------------------------------------
md-cache will invalidate the cache of that file, so that further lookup is
passed down to afr and hence update the read subvolume. Invalidating only in
md-cache is not enough, consider the folling oder of opertaions:
- pending xattr invalidation - invalidate md-cache
- readdirp on the bad read subvolume - fill md-cache
- lookup (served from md-cache)
- read - wound to the old read subvol.
Hence, along with invalidating md-cache, it is very important to reset the
read subvolume for that file, in afr.
Design Credit: Anuradha Talur, Ravishankar N
1. xattrop doesn't carry info saying post op/pre op.
2. Pre xattrop will have 0 value for all pending xattrs,
the cbk of pre xattrop carries the on-disk xattr value.
Non zero indicated healing is required.
3. Post xattrop will have non zero value for any of the
pending xattrs, if the fop failed on any of the bricks.
Change-Id: I469cbc111714c433984fe1c922be2ef113c25804
BUG: 1211863
Signed-off-by: Poornima G <pgurusid@redhat.com>
Reviewed-on: http://review.gluster.org/15398
Reviewed-by: Pranith Kumar Karampuri <pkarampu@redhat.com>
Tested-by: Pranith Kumar Karampuri <pkarampu@redhat.com>
Smoke: Gluster Build System <jenkins@build.gluster.org>
NetBSD-regression: NetBSD Build System <jenkins@build.gluster.org>
CentOS-regression: Gluster Build System <jenkins@build.gluster.org>
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Demote files on priority if hi-watermark has been breached and continue
to demote until the watermark drops below hi-watermark.
Monitor watermark more frequently.
Trigger demotion as soon as hi-watermark is breached.
Add cluster.tier-emergency-demote-query-limit option to limit number
of files returned from the database query for every iteration of
tier_migrate_using_query_file(). If watermark hasn't dropped below
hi-watermark during the first iteration, the next iteration will be
triggered approximately 1 second after tier_demote() returns to the
main tiering loop.
Update changetimerecorder xlator to handle query for emergency demote
mode.
Add tier-ctr-interface.h:
Move tier and ctr interface specific macros and struct definition from
libglusterfs/src/gfdb/gfdb_data_store.h to new header
libglusterfs/src/tier-ctr-interface.h
Change-Id: If56af78c6c81d37529b9b6e65ae606ba5c99a811
BUG: 1366648
Signed-off-by: Milind Changire <mchangir@redhat.com>
Reviewed-on: http://review.gluster.org/15158
Smoke: Gluster Build System <jenkins@build.gluster.org>
CentOS-regression: Gluster Build System <jenkins@build.gluster.org>
NetBSD-regression: NetBSD Build System <jenkins@build.gluster.org>
Reviewed-by: Dan Lambright <dlambrig@redhat.com>
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Thanks to bingxuan.zhang at nokia dot com for the report and patch.
Change-Id: If2b2151ab4df27d769126860d98770c80bc8a534
BUG: 1377584
Signed-off-by: Vijay Bellur <vbellur@redhat.com>
Reviewed-on: http://review.gluster.org/15613
Smoke: Gluster Build System <jenkins@build.gluster.org>
CentOS-regression: Gluster Build System <jenkins@build.gluster.org>
Reviewed-by: Niels de Vos <ndevos@redhat.com>
NetBSD-regression: NetBSD Build System <jenkins@build.gluster.org>
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Milind Changire reported that GlusterFS fails to build on RHEL5
because linux/oom.h is unavailable.
Milind's initial patch disables OOM adjustment completely
for those environments that do not have this header. However,
I'd take another approach that:
1) checks for linux/oom.h in compile-time and defines necessary
constants if the header is not present;
2) checks for available OOM API in /proc in run-time and uses it
accordingly.
This allows OOM to be adjusted properly on RHEL5 (the kernel is pretty new
to present /proc API for that) as well as RHEL6 (the kernel has many thing
backported including new /proc API).
Change-Id: I1bc610586872d208430575c149a7d0c54bd82370
BUG: 1379769
Signed-off-by: Oleksandr Natalenko <onatalen@redhat.com>
Reviewed-on: http://review.gluster.org/15587
Tested-by: Oleksandr Natalenko <oleksandr@natalenko.name>
Reviewed-by: Niels de Vos <ndevos@redhat.com>
Smoke: Gluster Build System <jenkins@build.gluster.org>
NetBSD-regression: NetBSD Build System <jenkins@build.gluster.org>
CentOS-regression: Gluster Build System <jenkins@build.gluster.org>
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Problem: Currently heal info command prints all
the files/directories if the index for the
file/directory is present in .glusterfs/indices folder.
After implementing patch http://review.gluster.org/#/c/13733/
indices of the file which is going through update fop
will also be present in .glusterfs/indices even
if the fop is successful on all the brick. At this time
if heal info command is being used, it will also display this
file which is actually healthy and does not require any heal.
Solution: Take lock on a file corresponding to the indices
and inspect xattrs to decide if the file needs heal or not.
Change-Id: I6361e2813ece369be12d02e74816df4eddb81cfa
BUG: 1366815
Signed-off-by: Ashish Pandey <aspandey@redhat.com>
Reviewed-on: http://review.gluster.org/15543
NetBSD-regression: NetBSD Build System <jenkins@build.gluster.org>
Reviewed-by: Pranith Kumar Karampuri <pkarampu@redhat.com>
Reviewed-by: Xavier Hernandez <xhernandez@datalab.es>
CentOS-regression: Gluster Build System <jenkins@build.gluster.org>
Smoke: Gluster Build System <jenkins@build.gluster.org>
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