postgres-xc-general Mailing List for Postgres-XC (Page 9)

nope i have directly did those steps on live server. I don't know exactly
what cause that problem. one day i just tried to run some queries manually
and got those errors.

I have tried to restart all components several times without success.

now another problem is i am not able to take dump of database. i am getting
this error.

postgres@db02:~$  pg_dump -h db02 --exclude-table=cdrs db -f db.sql
pg_dump: [archiver (db)] query failed: ERROR:  Failed to get pooled
connections
pg_dump: [archiver (db)] query was: LOCK TABLE public.accounts IN ACCESS
SHARE MODE

Please suggest.



On Sun, May 4, 2014 at 4:10 PM, Koichi Suzuki <koi...@gm...> wrote:

> Did you make any test before you did any action on your database?
> Also could you share what you did to have this situation?   Anyway,
> with this situation, I believe no DDL has been handled except for
> temporary object, which is session specific.
>
> So I believe you can restart GTM proxy gtm_pxy2  (you don't have to
> reinitialize it as long as you maintain gtm_proxy.conf) and coord2.
>
> Anyway, it is very essential to record and share what you did, and
> more important thing is to test it with non-product environment and
> see what goes on, and then review any step you are taking before you
> do.
>
> Hope to have more info on this.
>
> Best Regards;
> ---
> Koichi Suzuki
>
>
> 2014-05-03 14:31 GMT+09:00 Juned Khan <jkh...@gm...>:
> > Hi Koichi,
> >
> > I tried to follow the steps removing datanode slave and adding it again
> but
> > i no success. even earlier only datanode slave was not working but now
> gtm
> > slave, gtm_pxy2, coord2 and dn_slave is not starting up. I have removed
> GTM
> > slave and datanode slave
> >
> > here is my current status of pgxc
> >
> > PGXC monitor all
> > Running: gtm master
> > Running: gtm proxy gtm_pxy1
> > Not running: gtm proxy gtm_pxy2
> > Running: coordinator master coord1
> > Not running: coordinator master coord2
> > Running: datanode master datanode1
> >
> > Now each time i have to connect on db02 only( i.e PGXC Psql -h db02 -d
> > mydatabase) but its not allowing me to modify table structure. and
> giving me
> > below error.
> >
> > mydatabase=#  alter table invoice_summary_data add countrycode text not
> null
> > default ''::character(1);
> > ERROR:  Failed to get pooled connections
> > CONTEXT:  SQL statement "EXECUTE DIRECT ON (coord2) 'SELECT
> > pg_catalog.pg_try_advisory_xact_lock_shared(65535, 0)'"
> >
> > So as of now i am planning to remove those components which are not
> working
> > (gtm_pxy2,coord2 ). so it will not go to connect cood2 which is down.
> >
> > what will be the impact of this, i don't want to loost database access
> > completely.
> >
> > Please suggest.
> >
> > Regards
> > Juned Khan
> >
> >
> ------------------------------------------------------------------------------
> > "Accelerate Dev Cycles with Automated Cross-Browser Testing - For FREE
> > Instantly run your Selenium tests across 300+ browser/OS combos.  Get
> > unparalleled scalability from the best Selenium testing platform
> available.
> > Simple to use. Nothing to install. Get started now for free."
> > http://p.sf.net/sfu/SauceLabs
> > _______________________________________________
> > Postgres-xc-general mailing list
> > Pos...@li...
> > https://lists.sourceforge.net/lists/listinfo/postgres-xc-general
> >
>



-- 
Thanks,
Juned Khan
iNextrix Technologies Pvt Ltd.
www.inextrix.com

As to StormDB, yes, there was a news that TransLattice bought StormDB.

Though, I found StormDB's site still valid so I wrote this way.

Hope somebody points out which I should refer to, StormDB or Translattice.

Regards;
---
Koichi Suzuki


2014-05-04 0:59 GMT+09:00 Dorian Hoxha <dor...@gm...>:
>> You just need commodity INTEL server runnign Linux.
>
> Are INTEL cpu required ? If not INTEL can be removed ? (also running typo)
>
>> For data­warehouse
>>
>> applications, you may need separate patch which devides complexed query
>> into smaller
>>
>> chunks which run in datanodes in parallel.    StormDB will provide such
>> patche.
>
> Wasn't stormdb bought by another company ? Is there an opensource
> alternative ? Fix the "patche" typo ?
>
> A way to make it simpler is by merging coordinator and datanode into 1 and
> making it possible for a 'node' to not hold data (be a coordinator only),
> like in elastic-search, but you probably already know that.
>
> What exact things does the gtm-proxy do? For example, a single row insert
> wouldn't need the gtm (coordinator just inserts it to the right
> data-node)(asumming no sequences, since for that the gtm is needed)?
>
> If multiple tables are sharded on the same key (example: user_id). Will all
> the rows, from the same user in different tables be in the same data-node ?
>
>
>
>
>
>
>
>
> On Fri, May 2, 2014 at 10:43 AM, Koichi Suzuki <koi...@gm...>
> wrote:
>>
>> Hello;
>>
>> Because there are many discussions here on Postgres-XC configuration
>> and operation, I drafted a paper "Pgcx_ctl primer" to provide how to
>> configure Postgres-XC cluster and how to operate it.
>>
>> https://sourceforge.net/projects/postgres-xc/files/Pgxc_ctl_primer/?
>> contains the document.
>>
>> Hope to have feedback on it.
>>
>> Regards;
>> ---
>> Koichi Suzuki
>>
>>
>> ------------------------------------------------------------------------------
>> "Accelerate Dev Cycles with Automated Cross-Browser Testing - For FREE
>> Instantly run your Selenium tests across 300+ browser/OS combos.  Get
>> unparalleled scalability from the best Selenium testing platform
>> available.
>> Simple to use. Nothing to install. Get started now for free."
>> http://p.sf.net/sfu/SauceLabs
>> _______________________________________________
>> Postgres-xc-general mailing list
>> Pos...@li...
>> https://lists.sourceforge.net/lists/listinfo/postgres-xc-general
>
>

On Sun, May 4, 2014 at 7:05 PM, Dorian Hoxha <dor...@gm...> wrote:
> Probably even the gtm-proxy need to be merged with datanode+coordinator from
> what i read.
>
> If you make only local transactions (inside 1 datanode) + not using global
> sequences, will there be no traffic to the GTM for that transaction ?
You are forgetting global transaction ID, global snapshot and global
timestamp feeding across nodes to satisfy MVCC :)
-- 
Michael

Did you make any test before you did any action on your database?
Also could you share what you did to have this situation?   Anyway,
with this situation, I believe no DDL has been handled except for
temporary object, which is session specific.

So I believe you can restart GTM proxy gtm_pxy2  (you don't have to
reinitialize it as long as you maintain gtm_proxy.conf) and coord2.

Anyway, it is very essential to record and share what you did, and
more important thing is to test it with non-product environment and
see what goes on, and then review any step you are taking before you
do.

Hope to have more info on this.

Best Regards;
---
Koichi Suzuki


2014-05-03 14:31 GMT+09:00 Juned Khan <jkh...@gm...>:
> Hi Koichi,
>
> I tried to follow the steps removing datanode slave and adding it again but
> i no success. even earlier only datanode slave was not working but now gtm
> slave, gtm_pxy2, coord2 and dn_slave is not starting up. I have removed GTM
> slave and datanode slave
>
> here is my current status of pgxc
>
> PGXC monitor all
> Running: gtm master
> Running: gtm proxy gtm_pxy1
> Not running: gtm proxy gtm_pxy2
> Running: coordinator master coord1
> Not running: coordinator master coord2
> Running: datanode master datanode1
>
> Now each time i have to connect on db02 only( i.e PGXC Psql -h db02 -d
> mydatabase) but its not allowing me to modify table structure. and giving me
> below error.
>
> mydatabase=#  alter table invoice_summary_data add countrycode text not null
> default ''::character(1);
> ERROR:  Failed to get pooled connections
> CONTEXT:  SQL statement "EXECUTE DIRECT ON (coord2) 'SELECT
> pg_catalog.pg_try_advisory_xact_lock_shared(65535, 0)'"
>
> So as of now i am planning to remove those components which are not working
> (gtm_pxy2,coord2 ). so it will not go to connect cood2 which is down.
>
> what will be the impact of this, i don't want to loost database access
> completely.
>
> Please suggest.
>
> Regards
> Juned Khan
>
> ------------------------------------------------------------------------------
> "Accelerate Dev Cycles with Automated Cross-Browser Testing - For FREE
> Instantly run your Selenium tests across 300+ browser/OS combos.  Get
> unparalleled scalability from the best Selenium testing platform available.
> Simple to use. Nothing to install. Get started now for free."
> http://p.sf.net/sfu/SauceLabs
> _______________________________________________
> Postgres-xc-general mailing list
> Pos...@li...
> https://lists.sourceforge.net/lists/listinfo/postgres-xc-general
>

As discussed in the last year's XC-day, GTM proxy should be integrated
as postmaster backend.     Maybe GTM can be.     Coordinator/Datanode
can also be integrated into one.

Apparently, this is the direction we should take.    At first, there
were no such good experience to start with.    Before version 1.0, we
determined that the datanode and the coordinator can share the same
binary.       It is true that we started with the idea to provide
cluster-wide MVCC and now we found the next direction.

With this integration and when start with only one node, we don't need
GTM, which looks identical to standalone PG.   When we add the server,
at present we do need GTM.   Only accumulating local transactions in
the nodes cannot maintain cluster-wide database consistency.

I'm still investigating an idea how to get rid of GTM.   We need to do
the following:

1) To provide cluster wide MVCC,
2) To provide good means to determine which row can be vacuumed.

My current idea is: if we associate any local XID to the root
transaction (the transaction which application created), we may be
able to provide cluster wide MVCC by calculating cluster-wide snapshot
when needed.   I don't know how efficient it is and t don't have good
idea how to determine if a given row can be vacuumed.

This is the current situation.

Hope to have much more input on this.

Anyway, hope my draft helps people who is trying to use Postgres-XC.

Best;
---
Koichi Suzuki


2014-05-04 19:05 GMT+09:00 Dorian Hoxha <dor...@gm...>:
> Probably even the gtm-proxy need to be merged with datanode+coordinator from
> what i read.
>
> If you make only local transactions (inside 1 datanode) + not using global
> sequences, will there be no traffic to the GTM for that transaction ?
>
>
> On Sun, May 4, 2014 at 6:24 AM, Michael Paquier <mic...@gm...>
> wrote:
>>
>> On Sun, May 4, 2014 at 12:59 AM, Dorian Hoxha <dor...@gm...>
>> wrote:
>> >> You just need commodity INTEL server runnign Linux.
>> > Are INTEL cpu required ? If not INTEL can be removed ? (also running
>> > typo)
>> Not really... I agree to what you mean here.
>>
>> >> For data­warehouse
>> >>
>> >> applications, you may need separate patch which devides complexed query
>> >> into smaller
>> >>
>> >> chunks which run in datanodes in parallel.    StormDB will provide such
>> >> patche.
>> >
>> > Wasn't stormdb bought by another company ? Is there an opensource
>> > alternative ? Fix the "patche" typo ?
>> >
>> > A way to make it simpler is by merging coordinator and datanode into 1
>> > and
>> > making it possible for a 'node' to not hold data (be a coordinator
>> > only),
>> > like in elastic-search, but you probably already know that.
>> +1. This would alleviate data transfer between cross-node joins where
>> Coordinator and Datanodes are on separate servers. You could always
>> have both nodes on the same server with the XC of now... But that's
>> double number of nodes to monitor.
>>
>> > What exact things does the gtm-proxy do? For example, a single row
>> > insert
>> > wouldn't need the gtm (coordinator just inserts it to the right
>> > data-node)(asumming no sequences, since for that the gtm is needed)?
>> Grouping messages between Coordinator/Datanode and GTM to reduce
>> package interferences and improve performance.
>>
>> > If multiple tables are sharded on the same key (example: user_id). Will
>> > all
>> > the rows, from the same user in different tables be in the same
>> > data-node ?
>> Yep. Node choice algorithm is based using the data type of the key.
>> --
>> Michael
>
>

Probably even the gtm-proxy need to be merged with datanode+coordinator
from what i read.

If you make only local transactions (inside 1 datanode) + not using global
sequences, will there be no traffic to the GTM for that transaction ?


On Sun, May 4, 2014 at 6:24 AM, Michael Paquier
<mic...@gm...>wrote:

> On Sun, May 4, 2014 at 12:59 AM, Dorian Hoxha <dor...@gm...>
> wrote:
> >> You just need commodity INTEL server runnign Linux.
> > Are INTEL cpu required ? If not INTEL can be removed ? (also running
> typo)
> Not really... I agree to what you mean here.
>
> >> For data­warehouse
> >>
> >> applications, you may need separate patch which devides complexed query
> >> into smaller
> >>
> >> chunks which run in datanodes in parallel.    StormDB will provide such
> >> patche.
> >
> > Wasn't stormdb bought by another company ? Is there an opensource
> > alternative ? Fix the "patche" typo ?
> >
> > A way to make it simpler is by merging coordinator and datanode into 1
> and
> > making it possible for a 'node' to not hold data (be a coordinator only),
> > like in elastic-search, but you probably already know that.
> +1. This would alleviate data transfer between cross-node joins where
> Coordinator and Datanodes are on separate servers. You could always
> have both nodes on the same server with the XC of now... But that's
> double number of nodes to monitor.
>
> > What exact things does the gtm-proxy do? For example, a single row insert
> > wouldn't need the gtm (coordinator just inserts it to the right
> > data-node)(asumming no sequences, since for that the gtm is needed)?
> Grouping messages between Coordinator/Datanode and GTM to reduce
> package interferences and improve performance.
>
> > If multiple tables are sharded on the same key (example: user_id). Will
> all
> > the rows, from the same user in different tables be in the same
> data-node ?
> Yep. Node choice algorithm is based using the data type of the key.
> --
> Michael
>

On Sun, May 4, 2014 at 12:59 AM, Dorian Hoxha <dor...@gm...> wrote:
>> You just need commodity INTEL server runnign Linux.
> Are INTEL cpu required ? If not INTEL can be removed ? (also running typo)
Not really... I agree to what you mean here.

>> For data­warehouse
>>
>> applications, you may need separate patch which devides complexed query
>> into smaller
>>
>> chunks which run in datanodes in parallel.    StormDB will provide such
>> patche.
>
> Wasn't stormdb bought by another company ? Is there an opensource
> alternative ? Fix the "patche" typo ?
>
> A way to make it simpler is by merging coordinator and datanode into 1 and
> making it possible for a 'node' to not hold data (be a coordinator only),
> like in elastic-search, but you probably already know that.
+1. This would alleviate data transfer between cross-node joins where
Coordinator and Datanodes are on separate servers. You could always
have both nodes on the same server with the XC of now... But that's
double number of nodes to monitor.

> What exact things does the gtm-proxy do? For example, a single row insert
> wouldn't need the gtm (coordinator just inserts it to the right
> data-node)(asumming no sequences, since for that the gtm is needed)?
Grouping messages between Coordinator/Datanode and GTM to reduce
package interferences and improve performance.

> If multiple tables are sharded on the same key (example: user_id). Will all
> the rows, from the same user in different tables be in the same data-node ?
Yep. Node choice algorithm is based using the data type of the key.
-- 
Michael

>
> You just need commodity INTEL server runnign Linux.

Are INTEL cpu required ? If not INTEL can be removed ? (also running typo)

For data­warehouse

applications, you may need separate patch which devides complexed query
> into smaller

chunks which run in datanodes in parallel.    StormDB will provide such
> patche.

Wasn't stormdb bought by another company ? Is there an opensource
alternative ? Fix the "patche" typo ?

A way to make it simpler is by merging coordinator and datanode into 1 and
making it possible for a 'node' to not hold data (be a coordinator only),
like in elastic-search, but you probably already know that.

What exact things does the gtm-proxy do? For example, a single row insert
wouldn't need the gtm (coordinator just inserts it to the right
data-node)(asumming no sequences, since for that the gtm is needed)?

If multiple tables are sharded on the same key (example: user_id). Will all
the rows, from the same user in different tables be in the same data-node ?








On Fri, May 2, 2014 at 10:43 AM, Koichi Suzuki <koi...@gm...>wrote:

> Hello;
>
> Because there are many discussions here on Postgres-XC configuration
> and operation, I drafted a paper "Pgcx_ctl primer" to provide how to
> configure Postgres-XC cluster and how to operate it.
>
> https://sourceforge.net/projects/postgres-xc/files/Pgxc_ctl_primer/?
> contains the document.
>
> Hope to have feedback on it.
>
> Regards;
> ---
> Koichi Suzuki
>
>
> ------------------------------------------------------------------------------
> "Accelerate Dev Cycles with Automated Cross-Browser Testing - For FREE
> Instantly run your Selenium tests across 300+ browser/OS combos.  Get
> unparalleled scalability from the best Selenium testing platform available.
> Simple to use. Nothing to install. Get started now for free."
> http://p.sf.net/sfu/SauceLabs
> _______________________________________________
> Postgres-xc-general mailing list
> Pos...@li...
> https://lists.sourceforge.net/lists/listinfo/postgres-xc-general
>

Hi Koichi,

I tried to follow the steps removing datanode slave and adding it again but
i no success. even earlier only datanode slave was not working but now gtm
slave, gtm_pxy2, coord2 and dn_slave is not starting up. I have removed GTM
slave and datanode slave

here is my current status of pgxc
PGXC monitor all
Running: gtm master
Running: gtm proxy gtm_pxy1
Not running: gtm proxy gtm_pxy2
Running: coordinator master coord1
Not running: coordinator master coord2
Running: datanode master datanode1

Now each time i have to connect on db02 only( i.e PGXC Psql -h db02 -d
mydatabase) but its not allowing me to modify table structure. and giving
me below error.

mydatabase=#  alter table invoice_summary_data add countrycode text not
null default ''::character(1);
ERROR:  Failed to get pooled connections
CONTEXT:  SQL statement "EXECUTE DIRECT ON (coord2) 'SELECT
pg_catalog.pg_try_advisory_xact_lock_shared(65535, 0)'"

So as of now i am planning to remove those components which are not working
(gtm_pxy2,coord2 ). so it will not go to connect cood2 which is down.

what will be the impact of this, i don't want to loost database access
completely.

Please suggest.

Regards
Juned Khan

Sorry for the late reply

here is the first 2 lines of gtm.control file

28875757
opensips.public.aliases_id_seq\00       34160   1       1       1
9223372036854775807     f       t       1




On Fri, May 2, 2014 at 1:12 PM, 鈴木 幸市 <ko...@in...> wrote:

>  The size of the directory is not the matter.  The file 000B cannot be
> extended in size.   I hope you have plenty of space available in the file
> system.   You can get this by df command.  If there are sufficient space
> available, it must not be an issue.
>
>  I’m curious why the transaction is writing to quite old clog 000B.
>  I’m afraid, as suggested, gtm.control is corrupted.   Could you share the
> first line of gtm.control which suggests restarting GXID value?
>
>  Regards;
> ---
> Koichi Suzuki
>
>  2014/05/02 15:07、Juned Khan <jkh...@gm...> のメール：
>
>  astpp=# select count(*) from accounts;
> ERROR:  could not access status of transaction 0
> DETAIL:  Could not write to file "pg_clog/000B" at offset 40960: No space
> left on device.
>
> postgres@db02:~/pgxc/nodes/dn_master/pg_clog$ ls
> 0000  0001  0002  0003  0004  0005  0006  0007  0008  0009  000A  000B
> 000C  000D  000E  000F  0010  0011  0012  0013  0014  0015  0016  0017
> 0018  0019  001A
>
>  can i remove this file, although size of this directory not to big its
> just 6.8M
>
>
> On Fri, May 2, 2014 at 10:36 AM, Juned Khan <jkh...@gm...> wrote:
>
>>  Actually i haven setup anything related to checkpoint_segments manually.
>>
>>
>>
>> On Fri, May 2, 2014 at 10:31 AM, Michael Paquier <
>> mic...@gm...> wrote:
>>
>>> On Fri, May 2, 2014 at 11:46 AM, Masataka Saito <pg...@gm...>
>>> wrote:
>>> > Michael suggested followings.
>>> >  * The partition for XC is full.
>>> >  * df command will help you. (df is basic command enough to assume all
>>> > of Linux engineers knows it)
>>>  And reducing checkpoint_segments would help. I am fairly guessing that
>>> Juned set it up to an utterly high value to avoid any checkpoints to
>>> be kicked by server during his benchmark tests to avoid I/O spikes
>>> caused by dirty page flushes.
>>> --
>>> Michael
>>>
>>
>>
>>
>>  --
>> Thanks,
>> Juned Khan
>> iNextrix Technologies Pvt Ltd.
>> www.inextrix.com
>>
>
>
>
> --
> Thanks,
> Juned Khan
> iNextrix Technologies Pvt Ltd.
> www.inextrix.com
> ------------------------------------------------------------------------------
> "Accelerate Dev Cycles with Automated Cross-Browser Testing - For FREE
> Instantly run your Selenium tests across 300+ browser/OS combos.  Get
> unparalleled scalability from the best Selenium testing platform available.
> Simple to use. Nothing to install. Get started now for free."
>
> http://p.sf.net/sfu/SauceLabs_______________________________________________
> Postgres-xc-general mailing list
> Pos...@li...
> https://lists.sourceforge.net/lists/listinfo/postgres-xc-general
>
>
>


-- 
Thanks,
Juned Khan
iNextrix Technologies Pvt Ltd.
www.inextrix.com

Hello;

Because there are many discussions here on Postgres-XC configuration
and operation, I drafted a paper "Pgcx_ctl primer" to provide how to
configure Postgres-XC cluster and how to operate it.

https://sourceforge.net/projects/postgres-xc/files/Pgxc_ctl_primer/?
contains the document.

Hope to have feedback on it.

Regards;
---
Koichi Suzuki

The size of the directory is not the matter.  The file 000B cannot be extended in size.   I hope you have plenty of space available in the file system.   You can get this by df command.  If there are sufficient space available, it must not be an issue.

I’m curious why the transaction is writing to quite old clog 000B.    I’m afraid, as suggested, gtm.control is corrupted.   Could you share the first line of gtm.control which suggests restarting GXID value?

Regards;
---
Koichi Suzuki

2014/05/02 15:07、Juned Khan <jkh...@gm...<mailto:jkh...@gm...>> のメール：

astpp=# select count(*) from accounts;
ERROR:  could not access status of transaction 0
DETAIL:  Could not write to file "pg_clog/000B" at offset 40960: No space left on device.

postgres@db02:~/pgxc/nodes/dn_master/pg_clog$ ls
0000  0001  0002  0003  0004  0005  0006  0007  0008  0009  000A  000B  000C  000D  000E  000F  0010  0011  0012  0013  0014  0015  0016  0017  0018  0019  001A

can i remove this file, although size of this directory not to big its just 6.8M


On Fri, May 2, 2014 at 10:36 AM, Juned Khan <jkh...@gm...<mailto:jkh...@gm...>> wrote:
Actually i haven setup anything related to checkpoint_segments manually.



On Fri, May 2, 2014 at 10:31 AM, Michael Paquier <mic...@gm...<mailto:mic...@gm...>> wrote:
On Fri, May 2, 2014 at 11:46 AM, Masataka Saito <pg...@gm...<mailto:pg...@gm...>> wrote:
> Michael suggested followings.
>  * The partition for XC is full.
>  * df command will help you. (df is basic command enough to assume all
> of Linux engineers knows it)
And reducing checkpoint_segments would help. I am fairly guessing that
Juned set it up to an utterly high value to avoid any checkpoints to
be kicked by server during his benchmark tests to avoid I/O spikes
caused by dirty page flushes.
--
Michael



--
Thanks,
Juned Khan
iNextrix Technologies Pvt Ltd.
www.inextrix.com<http://www.inextrix.com/>



--
Thanks,
Juned Khan
iNextrix Technologies Pvt Ltd.
www.inextrix.com<http://www.inextrix.com/>
------------------------------------------------------------------------------
"Accelerate Dev Cycles with Automated Cross-Browser Testing - For FREE
Instantly run your Selenium tests across 300+ browser/OS combos.  Get
unparalleled scalability from the best Selenium testing platform available.
Simple to use. Nothing to install. Get started now for free."
http://p.sf.net/sfu/SauceLabs_______________________________________________
Postgres-xc-general mailing list
Pos...@li...
https://lists.sourceforge.net/lists/listinfo/postgres-xc-general

astpp=# select count(*) from accounts;
ERROR:  could not access status of transaction 0
DETAIL:  Could not write to file "pg_clog/000B" at offset 40960: No space
left on device.

postgres@db02:~/pgxc/nodes/dn_master/pg_clog$ ls
0000  0001  0002  0003  0004  0005  0006  0007  0008  0009  000A  000B
000C  000D  000E  000F  0010  0011  0012  0013  0014  0015  0016  0017
0018  0019  001A

can i remove this file, although size of this directory not to big its just
6.8M


On Fri, May 2, 2014 at 10:36 AM, Juned Khan <jkh...@gm...> wrote:

> Actually i haven setup anything related to checkpoint_segments manually.
>
>
>
> On Fri, May 2, 2014 at 10:31 AM, Michael Paquier <
> mic...@gm...> wrote:
>
>> On Fri, May 2, 2014 at 11:46 AM, Masataka Saito <pg...@gm...> wrote:
>> > Michael suggested followings.
>> >  * The partition for XC is full.
>> >  * df command will help you. (df is basic command enough to assume all
>> > of Linux engineers knows it)
>> And reducing checkpoint_segments would help. I am fairly guessing that
>> Juned set it up to an utterly high value to avoid any checkpoints to
>> be kicked by server during his benchmark tests to avoid I/O spikes
>> caused by dirty page flushes.
>> --
>> Michael
>>
>
>
>
> --
> Thanks,
> Juned Khan
> iNextrix Technologies Pvt Ltd.
> www.inextrix.com
>



-- 
Thanks,
Juned Khan
iNextrix Technologies Pvt Ltd.
www.inextrix.com

Actually i haven setup anything related to checkpoint_segments manually.



On Fri, May 2, 2014 at 10:31 AM, Michael Paquier
<mic...@gm...>wrote:

> On Fri, May 2, 2014 at 11:46 AM, Masataka Saito <pg...@gm...> wrote:
> > Michael suggested followings.
> >  * The partition for XC is full.
> >  * df command will help you. (df is basic command enough to assume all
> > of Linux engineers knows it)
> And reducing checkpoint_segments would help. I am fairly guessing that
> Juned set it up to an utterly high value to avoid any checkpoints to
> be kicked by server during his benchmark tests to avoid I/O spikes
> caused by dirty page flushes.
> --
> Michael
>



-- 
Thanks,
Juned Khan
iNextrix Technologies Pvt Ltd.
www.inextrix.com

I know df command but i am not sure about what to remove from which
directory of postgre-xc
as i mentioned in earlier reply , the size of pg_xlog directory is 33G and
yeah still 123G space is available
on DB server.


On Fri, May 2, 2014 at 8:16 AM, Masataka Saito <pg...@gm...> wrote:

> I'm almost sure this issue caused by shot of the storage.
>
> Michael suggested followings.
>  * The partition for XC is full.
>  * df command will help you. (df is basic command enough to assume all
> of Linux engineers knows it)
>
> You could do many things by that suggestion.
> Did you run df command at every server? checked your free area?
> checked quota settings? determine if you can write some data into the
> directory?
>
> And usage of GTM proxy is unusual. I guess that the proxy produced
> enormous error logs about communication with the GTM. As GTM is not
> working well, the log may be no use and you can remove them.
>
> After that you need to recover gtm.control from GTM slave. If slave's
> one is also broken, I think it is difficult to recover the cluster.
>
> Regards.
>
>
> On 1 May 2014 19:02, Juned Khan <jkh...@gm...> wrote:
> > I am not sure but may be datanode_archlog directory is not exists in my
> > case. may be its have different name.
> > however size of /home/postgres/pgxc/nodes/dn_master directory is 42G and
> > /home/postgres/pgxc/nodes/gtm_pxy is of 31G.
> >
> > Please suggest.
> >
> >
> > On Thu, May 1, 2014 at 12:50 PM, Michael Paquier <
> mic...@gm...>
> > wrote:
> >>
> >> On Mon, Apr 28, 2014 at 8:31 PM, Juned Khan <jkh...@gm...>
> wrote:
> >> > "/home/postgres/pgxc/nodes/datanode_archlog/000000010000001C0000006A":
> >> > No
> >> > space left on device (28)
> >> This means that the partition containing folder
> >> /home/postgres/pgxc/nodes/datanode_archlog/ is full. Try to do some df
> >> and monitor the size of this partition/disk that you are using for
> >> your archive files.
> >> --
> >> Michael
> >
> >
> >
> >
> > --
> > Thanks,
> > Juned Khan
> > iNextrix Technologies Pvt Ltd.
> > www.inextrix.com
> >
> >
> ------------------------------------------------------------------------------
> > "Accelerate Dev Cycles with Automated Cross-Browser Testing - For FREE
> > Instantly run your Selenium tests across 300+ browser/OS combos.  Get
> > unparalleled scalability from the best Selenium testing platform
> available.
> > Simple to use. Nothing to install. Get started now for free."
> > http://p.sf.net/sfu/SauceLabs
> > _______________________________________________
> > Postgres-xc-general mailing list
> > Pos...@li...
> > https://lists.sourceforge.net/lists/listinfo/postgres-xc-general
> >
>



-- 
Thanks,
Juned Khan
iNextrix Technologies Pvt Ltd.
www.inextrix.com

On Fri, May 2, 2014 at 11:46 AM, Masataka Saito <pg...@gm...> wrote:
> Michael suggested followings.
>  * The partition for XC is full.
>  * df command will help you. (df is basic command enough to assume all
> of Linux engineers knows it)
And reducing checkpoint_segments would help. I am fairly guessing that
Juned set it up to an utterly high value to avoid any checkpoints to
be kicked by server during his benchmark tests to avoid I/O spikes
caused by dirty page flushes.
-- 
Michael

I'm almost sure this issue caused by shot of the storage.

Michael suggested followings.
 * The partition for XC is full.
 * df command will help you. (df is basic command enough to assume all
of Linux engineers knows it)

You could do many things by that suggestion.
Did you run df command at every server? checked your free area?
checked quota settings? determine if you can write some data into the
directory?

And usage of GTM proxy is unusual. I guess that the proxy produced
enormous error logs about communication with the GTM. As GTM is not
working well, the log may be no use and you can remove them.

After that you need to recover gtm.control from GTM slave. If slave's
one is also broken, I think it is difficult to recover the cluster.

Regards.


On 1 May 2014 19:02, Juned Khan <jkh...@gm...> wrote:
> I am not sure but may be datanode_archlog directory is not exists in my
> case. may be its have different name.
> however size of /home/postgres/pgxc/nodes/dn_master directory is 42G and
> /home/postgres/pgxc/nodes/gtm_pxy is of 31G.
>
> Please suggest.
>
>
> On Thu, May 1, 2014 at 12:50 PM, Michael Paquier <mic...@gm...>
> wrote:
>>
>> On Mon, Apr 28, 2014 at 8:31 PM, Juned Khan <jkh...@gm...> wrote:
>> > "/home/postgres/pgxc/nodes/datanode_archlog/000000010000001C0000006A":
>> > No
>> > space left on device (28)
>> This means that the partition containing folder
>> /home/postgres/pgxc/nodes/datanode_archlog/ is full. Try to do some df
>> and monitor the size of this partition/disk that you are using for
>> your archive files.
>> --
>> Michael
>
>
>
>
> --
> Thanks,
> Juned Khan
> iNextrix Technologies Pvt Ltd.
> www.inextrix.com
>
> ------------------------------------------------------------------------------
> "Accelerate Dev Cycles with Automated Cross-Browser Testing - For FREE
> Instantly run your Selenium tests across 300+ browser/OS combos.  Get
> unparalleled scalability from the best Selenium testing platform available.
> Simple to use. Nothing to install. Get started now for free."
> http://p.sf.net/sfu/SauceLabs
> _______________________________________________
> Postgres-xc-general mailing list
> Pos...@li...
> https://lists.sourceforge.net/lists/listinfo/postgres-xc-general
>

On Fri, May 2, 2014 at 10:01 AM, 鈴木 幸市 <ko...@in...> wrote:
> If you’re quite sure that the node does not fail until removed xlog is not used at the recovery.
Juned meant on master AFAIK.

Per se:
On Thu, May 1, 2014 at 7:45 PM, Juned Khan <jkh...@gm...> wrote:
> what will be the impact if i remove files under pg_xlog directory ?
>
> root@db02:/home/postgres/pgxc/
nodes/dn_master/pg_xlog# du -sh
> 33G     .
-- 
Michael

If you’re quite sure that the node does not fail until removed xlog is not used at the recovery.
---
Koichi Suzuki

2014/05/01 20:23、Michael Paquier <mic...@gm...> のメール：

> On Thu, May 1, 2014 at 7:49 PM, 鈴木 幸市 <ko...@in...> wrote:
>> Do you mean pg_xlog at the slave?   Because pg_xlog contains all the redo
>> logs needed to recovery, it is quite harmful to do so.   If you are removing
>> pg_xlog at the slave, it is also harmful too.   Pgxc_ctl configures the
>> slave to remove unnecessary files under pg_xlog automatically.
> Not harmful. Catastrophic enough to be haunted for 3 generations by
> your users if you do it.
> -- 
> Michael
> 

On Thu, May 1, 2014 at 7:49 PM, 鈴木 幸市 <ko...@in...> wrote:
> Do you mean pg_xlog at the slave?   Because pg_xlog contains all the redo
> logs needed to recovery, it is quite harmful to do so.   If you are removing
> pg_xlog at the slave, it is also harmful too.   Pgxc_ctl configures the
> slave to remove unnecessary files under pg_xlog automatically.
Not harmful. Catastrophic enough to be haunted for 3 generations by
your users if you do it.
-- 
Michael

On Thu, May 1, 2014 at 7:45 PM, Juned Khan <jkh...@gm...> wrote:
> what will be the impact if i remove files under pg_xlog directory ?
>
> root@db02:/home/postgres/pgxc/nodes/dn_master/pg_xlog# du -sh
> 33G     .
Don't do it. This is one of the shortest way to corrupt your database
server. You have here something like 2050 WAL files, that's a lot to
replay in case of crash, you should try to reduce checkpoint_segments
first, or enforce a checkpoint to flush all the pages to disk, and be
able to recycle properly the existing WAL files.
-- 
Michael

nope i mean pg_xlog at datanode master, datanode slave is already down due
to some connection related
problem<http://sourceforge.net/p/postgres-xc/mailman/message/32232987/>
.

My current database status is
PGXC monitor all
Running: gtm master
Running: gtm slave
Running: gtm proxy gtm_pxy1
Running: gtm proxy gtm_pxy2
Running: coordinator master coord1
Running: coordinator master coord2
Running: datanode master datanode1
Not running: datanode slave datanode1

only datanode master is up as of now, i can not stop my database to check
such things.
Also while restarting components if something wrong will happen then my
whole system will go down, so i can not take change at this movement. hope
you understand.



On Thu, May 1, 2014 at 4:19 PM, 鈴木 幸市 <ko...@in...> wrote:

>  Do you mean pg_xlog at the slave?   Because pg_xlog contains all the redo
> logs needed to recovery, it is quite harmful to do so.   If you are
> removing pg_xlog at the slave, it is also harmful too.   Pgxc_ctl
> configures the  slave to remove unnecessary files under pg_xlog
> automatically.
>
>  Anyway, the problem looks to be caused by missing gtm.control.   Do you
> have any indication how it’s been gone?   And what is your current status
> of the database?   Do you have any chance to stop the database, take
> backups and see what’s going on?
>
>  Regards;
> ---
> Koichi Suzuki
>
>  2014/05/01 19:45、Juned Khan <jkh...@gm...> のメール：
>
>  what will be the impact if i remove files under pg_xlog directory ?
>
> root@db02:/home/postgres/pgxc/nodes/dn_master/pg_xlog# du -sh
> 33G     .
>
>
>
> On Thu, May 1, 2014 at 4:05 PM, Juned Khan <jkh...@gm...> wrote:
>
>>  As of now i am attaching my pgxc_ctl.conf file, i have setup everything
>> using pgxc_ctl. this database is in production. to perform all above steps
>> i need to set downtime. so when i get a change i ll perform this steps .
>>   please tell me if i have done any misconfiguration in this file. so i
>> can update this at that time.
>>
>>
>>
>>
>> On Thu, May 1, 2014 at 3:50 PM, 鈴木 幸市 <ko...@in...> wrote:
>>
>>> I needd an info how you configured your cluster, manually or pgxc_ctl.
>>> If pgxc_ctl, I need your configuration file.
>>>
>>>  Also, it’s very funny that gtm.control is missing.     If so, next
>>> thing you can do is:
>>>
>>>  1) Stop all the coordinators/datanodes/gtm, master and slave.
>>> 2) Bake file-level backup of all the resources (cold backup)
>>> 3) Detach coordinator/datanode slaves and see if masters run normally.
>>> 4) If so, then reconstruct slaves.
>>> 5) If masters does not work correctly, you need to hack each node’s
>>> pg_control to see current GXID value and restore gtm.control with this
>>> value to restart gtm.
>>>
>>>  Even if gtm fails, gtm.control is available to indicate a safe restart
>>> point.   Do you have any idea how it’s been gone?
>>>
>>>  Regards;
>>>  ---
>>> Koichi Suzuki
>>>
>>>  2014/05/01 19:02、Juned Khan <jkh...@gm...> のメール：
>>>
>>>   I am not sure but may be datanode_archlog directory is not exists in
>>> my case. may be its have different name.
>>>  however size of /home/postgres/pgxc/nodes/dn_master directory is *42G*and /home/postgres/pgxc/nodes/gtm_pxy is of
>>> *31G*.
>>>
>>>  Please suggest.
>>>
>>>
>>> On Thu, May 1, 2014 at 12:50 PM, Michael Paquier <
>>> mic...@gm...> wrote:
>>>
>>>> On Mon, Apr 28, 2014 at 8:31 PM, Juned Khan <jkh...@gm...>
>>>> wrote:
>>>> >
>>>> "/home/postgres/pgxc/nodes/datanode_archlog/000000010000001C0000006A": No
>>>> > space left on device (28)
>>>>  This means that the partition containing folder
>>>> /home/postgres/pgxc/nodes/datanode_archlog/ is full. Try to do some df
>>>> and monitor the size of this partition/disk that you are using for
>>>> your archive files.
>>>> --
>>>> Michael
>>>>
>>>
>>>
>>>
>>> --
>>> Thanks,
>>> Juned Khan
>>> iNextrix Technologies Pvt Ltd.
>>> www.inextrix.com
>>>
>>> ------------------------------------------------------------------------------
>>> "Accelerate Dev Cycles with Automated Cross-Browser Testing - For FREE
>>> Instantly run your Selenium tests across 300+ browser/OS combos.  Get
>>> unparalleled scalability from the best Selenium testing platform
>>> available.
>>> Simple to use. Nothing to install. Get started now for free."
>>>
>>> http://p.sf.net/sfu/SauceLabs_______________________________________________
>>> Postgres-xc-general mailing list
>>> Pos...@li...
>>> https://lists.sourceforge.net/lists/listinfo/postgres-xc-general
>>>
>>>
>>>
>>
>>
>> --
>> Thanks,
>> Juned Khan
>> iNextrix Technologies Pvt Ltd.
>> www.inextrix.com
>>
>
>
>
> --
> Thanks,
> Juned Khan
> iNextrix Technologies Pvt Ltd.
> www.inextrix.com
>
>
>


-- 
Thanks,
Juned Khan
iNextrix Technologies Pvt Ltd.
www.inextrix.com

Do you mean pg_xlog at the slave?   Because pg_xlog contains all the redo logs needed to recovery, it is quite harmful to do so.   If you are removing pg_xlog at the slave, it is also harmful too.   Pgxc_ctl configures the  slave to remove unnecessary files under pg_xlog automatically.

Anyway, the problem looks to be caused by missing gtm.control.   Do you have any indication how it’s been gone?   And what is your current status of the database?   Do you have any chance to stop the database, take backups and see what’s going on?

Regards;
---
Koichi Suzuki

2014/05/01 19:45、Juned Khan <jkh...@gm...<mailto:jkh...@gm...>> のメール：

what will be the impact if i remove files under pg_xlog directory ?

root@db02:/home/postgres/pgxc/nodes/dn_master/pg_xlog# du -sh
33G     .



On Thu, May 1, 2014 at 4:05 PM, Juned Khan <jkh...@gm...<mailto:jkh...@gm...>> wrote:
As of now i am attaching my pgxc_ctl.conf file, i have setup everything using pgxc_ctl. this database is in production. to perform all above steps i need to set downtime. so when i get a change i ll perform this steps .
 please tell me if i have done any misconfiguration in this file. so i can update this at that time.




On Thu, May 1, 2014 at 3:50 PM, 鈴木 幸市 <ko...@in...<mailto:ko...@in...>> wrote:
I needd an info how you configured your cluster, manually or pgxc_ctl.   If pgxc_ctl, I need your configuration file.

Also, it’s very funny that gtm.control is missing.     If so, next thing you can do is:

1) Stop all the coordinators/datanodes/gtm, master and slave.
2) Bake file-level backup of all the resources (cold backup)
3) Detach coordinator/datanode slaves and see if masters run normally.
4) If so, then reconstruct slaves.
5) If masters does not work correctly, you need to hack each node’s pg_control to see current GXID value and restore gtm.control with this value to restart gtm.

Even if gtm fails, gtm.control is available to indicate a safe restart point.   Do you have any idea how it’s been gone?

Regards;
---
Koichi Suzuki

2014/05/01 19:02、Juned Khan <jkh...@gm...<mailto:jkh...@gm...>> のメール：

I am not sure but may be datanode_archlog directory is not exists in my case. may be its have different name.
however size of /home/postgres/pgxc/nodes/dn_master directory is 42G and /home/postgres/pgxc/nodes/gtm_pxy is of 31G.

Please suggest.


On Thu, May 1, 2014 at 12:50 PM, Michael Paquier <mic...@gm...<mailto:mic...@gm...>> wrote:
On Mon, Apr 28, 2014 at 8:31 PM, Juned Khan <jkh...@gm...<mailto:jkh...@gm...>> wrote:
> "/home/postgres/pgxc/nodes/datanode_archlog/000000010000001C0000006A": No
> space left on device (28)
This means that the partition containing folder
/home/postgres/pgxc/nodes/datanode_archlog/ is full. Try to do some df
and monitor the size of this partition/disk that you are using for
your archive files.
--
Michael



--
Thanks,
Juned Khan
iNextrix Technologies Pvt Ltd.
www.inextrix.com<http://www.inextrix.com/>
------------------------------------------------------------------------------
"Accelerate Dev Cycles with Automated Cross-Browser Testing - For FREE
Instantly run your Selenium tests across 300+ browser/OS combos.  Get
unparalleled scalability from the best Selenium testing platform available.
Simple to use. Nothing to install. Get started now for free."
http://p.sf.net/sfu/SauceLabs_______________________________________________
Postgres-xc-general mailing list
Pos...@li...<mailto:Pos...@li...>
https://lists.sourceforge.net/lists/listinfo/postgres-xc-general




--
Thanks,
Juned Khan
iNextrix Technologies Pvt Ltd.
www.inextrix.com<http://www.inextrix.com/>



--
Thanks,
Juned Khan
iNextrix Technologies Pvt Ltd.
www.inextrix.com<http://www.inextrix.com/>

what will be the impact if i remove files under pg_xlog directory ?

root@db02:/home/postgres/pgxc/nodes/dn_master/pg_xlog# du -sh
33G     .



On Thu, May 1, 2014 at 4:05 PM, Juned Khan <jkh...@gm...> wrote:

> As of now i am attaching my pgxc_ctl.conf file, i have setup everything
> using pgxc_ctl. this database is in production. to perform all above steps
> i need to set downtime. so when i get a change i ll perform this steps .
>  please tell me if i have done any misconfiguration in this file. so i can
> update this at that time.
>
>
>
>
> On Thu, May 1, 2014 at 3:50 PM, 鈴木 幸市 <ko...@in...> wrote:
>
>>  I needd an info how you configured your cluster, manually or pgxc_ctl.
>> If pgxc_ctl, I need your configuration file.
>>
>>  Also, it’s very funny that gtm.control is missing.     If so, next
>> thing you can do is:
>>
>>  1) Stop all the coordinators/datanodes/gtm, master and slave.
>> 2) Bake file-level backup of all the resources (cold backup)
>> 3) Detach coordinator/datanode slaves and see if masters run normally.
>> 4) If so, then reconstruct slaves.
>> 5) If masters does not work correctly, you need to hack each node’s
>> pg_control to see current GXID value and restore gtm.control with this
>> value to restart gtm.
>>
>>  Even if gtm fails, gtm.control is available to indicate a safe restart
>> point.   Do you have any idea how it’s been gone?
>>
>>  Regards;
>>  ---
>> Koichi Suzuki
>>
>>  2014/05/01 19:02、Juned Khan <jkh...@gm...> のメール：
>>
>>   I am not sure but may be datanode_archlog directory is not exists in
>> my case. may be its have different name.
>>  however size of /home/postgres/pgxc/nodes/dn_master directory is *42G*and /home/postgres/pgxc/nodes/gtm_pxy is of
>> *31G*.
>>
>>  Please suggest.
>>
>>
>> On Thu, May 1, 2014 at 12:50 PM, Michael Paquier <
>> mic...@gm...> wrote:
>>
>>> On Mon, Apr 28, 2014 at 8:31 PM, Juned Khan <jkh...@gm...> wrote:
>>> > "/home/postgres/pgxc/nodes/datanode_archlog/000000010000001C0000006A":
>>> No
>>> > space left on device (28)
>>>  This means that the partition containing folder
>>> /home/postgres/pgxc/nodes/datanode_archlog/ is full. Try to do some df
>>> and monitor the size of this partition/disk that you are using for
>>> your archive files.
>>> --
>>> Michael
>>>
>>
>>
>>
>> --
>> Thanks,
>> Juned Khan
>> iNextrix Technologies Pvt Ltd.
>> www.inextrix.com
>> ------------------------------------------------------------------------------
>> "Accelerate Dev Cycles with Automated Cross-Browser Testing - For FREE
>> Instantly run your Selenium tests across 300+ browser/OS combos.  Get
>> unparalleled scalability from the best Selenium testing platform
>> available.
>> Simple to use. Nothing to install. Get started now for free."
>>
>> http://p.sf.net/sfu/SauceLabs_______________________________________________
>> Postgres-xc-general mailing list
>> Pos...@li...
>> https://lists.sourceforge.net/lists/listinfo/postgres-xc-general
>>
>>
>>
>
>
> --
> Thanks,
> Juned Khan
> iNextrix Technologies Pvt Ltd.
> www.inextrix.com
>



-- 
Thanks,
Juned Khan
iNextrix Technologies Pvt Ltd.
www.inextrix.com

I needd an info how you configured your cluster, manually or pgxc_ctl.   If pgxc_ctl, I need your configuration file.

Also, it’s very funny that gtm.control is missing.     If so, next thing you can do is:

1) Stop all the coordinators/datanodes/gtm, master and slave.
2) Bake file-level backup of all the resources (cold backup)
3) Detach coordinator/datanode slaves and see if masters run normally.
4) If so, then reconstruct slaves.
5) If masters does not work correctly, you need to hack each node’s pg_control to see current GXID value and restore gtm.control with this value to restart gtm.

Even if gtm fails, gtm.control is available to indicate a safe restart point.   Do you have any idea how it’s been gone?

Regards;
---
Koichi Suzuki

2014/05/01 19:02、Juned Khan <jkh...@gm...<mailto:jkh...@gm...>> のメール：

I am not sure but may be datanode_archlog directory is not exists in my case. may be its have different name.
however size of /home/postgres/pgxc/nodes/dn_master directory is 42G and /home/postgres/pgxc/nodes/gtm_pxy is of 31G.

Please suggest.


On Thu, May 1, 2014 at 12:50 PM, Michael Paquier <mic...@gm...<mailto:mic...@gm...>> wrote:
On Mon, Apr 28, 2014 at 8:31 PM, Juned Khan <jkh...@gm...<mailto:jkh...@gm...>> wrote:
> "/home/postgres/pgxc/nodes/datanode_archlog/000000010000001C0000006A": No
> space left on device (28)
This means that the partition containing folder
/home/postgres/pgxc/nodes/datanode_archlog/ is full. Try to do some df
and monitor the size of this partition/disk that you are using for
your archive files.
--
Michael



--
Thanks,
Juned Khan
iNextrix Technologies Pvt Ltd.
www.inextrix.com<http://www.inextrix.com/>
------------------------------------------------------------------------------
"Accelerate Dev Cycles with Automated Cross-Browser Testing - For FREE
Instantly run your Selenium tests across 300+ browser/OS combos.  Get
unparalleled scalability from the best Selenium testing platform available.
Simple to use. Nothing to install. Get started now for free."
http://p.sf.net/sfu/SauceLabs_______________________________________________
Postgres-xc-general mailing list
Pos...@li...
https://lists.sourceforge.net/lists/listinfo/postgres-xc-general