Обсуждение: Problem with pg_upgrade

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Problem with pg_upgrade

От
Payal Singh
Дата:
Hello,

I am trying to use pg_upgrade to upgrade data from 9.1.4 to 9.2beta2.
Although the upgrade completed successfully,  vacuumdb --all --analyze-only
gives an error. I tried upgrading two binary backups of the same production
database from different days, and both returned the exact same error . The
output I got for both trials is as follows:

First trial:


   1. postgres@sparedb1:/data/pg$ sh analyze_new_cluster.sh
   2. This script will generate minimal optimizer statistics rapidly
   3. so your system is usable, and then gather statistics twice more
   4. with increasing accuracy.  When it is done, your system will
   5. have the default level of optimizer statistics.
   6.
   7. If you have used ALTER TABLE to modify the statistics target for
   8. any tables, you might want to remove them and restore them after
   9. running this script because they will delay fast statistics
   generation.
   10.
   11. If you would like default statistics as quickly as possible, cancel
   12. this script and run:
   13.     vacuumdb --all --analyze-only
   14.
   15. Generating minimal optimizer statistics (1 target)
   16. --------------------------------------------------
   17. vacuumdb: vacuuming database "functionx"
   18. vacuumdb: vacuuming database "postgres"
   19. vacuumdb: vacuuming of database "postgres" failed: ERROR:  could not
   access status of transaction 46675125
   20. DETAIL:  Could not open file "pg_clog/002C": No such file or
   directory.
   21.
   22. The server is now available with minimal optimizer statistics.
   23. Query performance will be optimal once this script completes.
   24.
   25. Generating medium optimizer statistics (10 targets)
   26. ---------------------------------------------------
   27. vacuumdb: vacuuming database "functionx"
   28. vacuumdb: vacuuming database "postgres"
   29. vacuumdb: vacuuming of database "postgres" failed: ERROR:  could not
   access status of transaction 46675125
   30. DETAIL:  Could not open file "pg_clog/002C": No such file or
   directory.
   31.
   32. Generating default (full) optimizer statistics (100 targets?)
   33. -------------------------------------------------------------
   34. vacuumdb: vacuuming database "functionx"
   35. vacuumdb: vacuuming database "postgres"
   36. vacuumdb: vacuuming of database "postgres" failed: ERROR:  could not
   access status of transaction 46675125
   37. DETAIL:  Could not open file "pg_clog/002C": No such file or
   directory.
   38.
   39. Done
   40. postgres@sparedb1:/data/pg$

Second Trial:


   1. postgres@sparedb1:/data/pg$ /opt/pgbrew/9.2beta2}/bin/pg_upgrade -d
   /data/pg/9.1 -D /data/pg/9.2 -b /opt/pgbrew/9.1.4/bin -B /opt/pgbrew/9
   .2beta2}/bin
   2. Performing Consistency Checks
   3. -----------------------------
   4. Checking current, bin, and data directories                 ok
   5. Checking cluster versions                                   ok
   6. Checking database user is a superuser                       ok
   7. Checking for prepared transactions                          ok
   8. Checking for reg* system OID user data types                ok
   9. Checking for contrib/isn with bigint-passing mismatch       ok
   10. Creating catalog dump                                       ok
   11. Checking for prepared transactions                          ok
   12. Checking for presence of required libraries                 ok
   13.
   14. If pg_upgrade fails after this point, you must re-initdb the
   15. new cluster before continuing.
   16.
   17. Performing Upgrade
   18. ------------------
   19. Analyzing all rows in the new cluster                       ok
   20. Freezing all rows on the new cluster                        ok
   21. Deleting new commit clogs                                   ok
   22. Copying old commit clogs to new server                      ok
   23. Setting next transaction ID for new cluster                 ok
   24. Resetting WAL archives                                      ok
   25. Setting frozenxid counters in new cluster                   ok
   26. Creating databases in the new cluster                       ok
   27. Adding support functions to new cluster                     ok
   28. Restoring database schema to new cluster                    ok
   29. Removing support functions from new cluster                 ok
   30. Copying user relation files
   31.                                                             ok
   32. Setting next OID for new cluster                            ok
   33. Creating script to analyze new cluster                      ok
   34. Creating script to delete old cluster                       ok
   35.
   36. Upgrade Complete
   37. ----------------
   38. Optimizer statistics are not transferred by pg_upgrade so,
   39. once you start the new server, consider running:
   40.     analyze_new_cluster.sh
   41.
   42. Running this script will delete the old cluster's data files:
   43.     delete_old_cluster.sh
   44. postgres@sparedb1:/data/pg$ echo $PATH
   45. /opt/pgbrew/9.2beta2}
   /bin:/home/postgres/bin:/usr/local/bin:/usr/bin:/bin:/usr/local/games:/usr/games:/opt/dell/srvadmin/bin
   46. postgres@sparedb1:/data/pg$ ls
   47. 9.1  analyze_new_cluster.sh  delete_old_cluster.sh   walarchive
   48. 9.2  backups             loadable_libraries.txt
   49. postgres@sparedb1:/data/pg$ /opt/pgbrew/9.2beta2}/bin/pg_ctl status
   50. pg_ctl: server is running (PID: 17421)
   51. /opt/pgbrew/9.2beta2}/bin/postgres "-D" "/data/pg/9.2"
   52. postgres@sparedb1:/data/pg$ vacuumdb --all --analyze-only
   53. vacuumdb: vacuuming database "functionx"
   54. vacuumdb: vacuuming database "postgres"
   55. vacuumdb: vacuuming of database "postgres" failed: ERROR:  could not
   access status of transaction 46675125
   56. DETAIL:  Could not open file "pg_clog/002C": No such file or
   directory.
   57. postgres@sparedb1:/data/pg$

Regards,
Payal Singh

Re: Problem with pg_upgrade

От
Craig Ringer
Дата:
On 07/05/2012 11:20 PM, Payal Singh wrote:
> Hello,
>
> I am trying to use pg_upgrade to upgrade data from 9.1.4 to 9.2beta2.
> Although the upgrade completed successfully, vacuumdb --all
> --analyze-only gives an error. I tried upgrading two binary backups of
> the same production database from different days, and both returned
> the exact same error . The output I got for both trials is as follows:

Just out of interest, if you try to use pg_ctl to start a 9.1 server
from those backups, do they work? Can they be vaccuumed then?

If you start 9.1 on a copy of the backup then cleanly stop it again,
does pg_upgrade then run?

--
Craig Ringer

Re: Problem with pg_upgrade

От
Payal Singh
Дата:
Thank you. That worked.

Regards
Payal

On Thu, Jul 5, 2012 at 12:15 PM, Craig Ringer <ringerc@ringerc.id.au> wrote:

>  On 07/05/2012 11:20 PM, Payal Singh wrote:
>
> Hello,
>
>  I am trying to use pg_upgrade to upgrade data from 9.1.4 to 9.2beta2.
> Although the upgrade completed successfully,  vacuumdb --all --analyze-only
> gives an error. I tried upgrading two binary backups of the same production
> database from different days, and both returned the exact same error . The
> output I got for both trials is as follows:
>
>
> Just out of interest, if you try to use pg_ctl to start a 9.1 server from
> those backups, do they work? Can they be vaccuumed then?
>
> If you start 9.1 on a copy of the backup then cleanly stop it again, does
> pg_upgrade then run?
>
> --
> Craig Ringer
>



--
Payal Singh
Graduate Student
Department of Computer Science and Electrical Engineering
University of Maryland, Baltimore County

Re: Problem with pg_upgrade

От
Tom Lane
Дата:
Payal Singh <payals1@umbc.edu> writes:
> On Thu, Jul 5, 2012 at 12:15 PM, Craig Ringer <ringerc@ringerc.id.au> wrote:
>> If you start 9.1 on a copy of the backup then cleanly stop it again, does
>> pg_upgrade then run?

> Thank you. That worked.

ISTM that pg_upgrade should check that the old cluster was shut down
cleanly, ie pg_control has state = "shut down".  AFAICT from some
testing, it currently only checks that there is no postmaster.pid file,
which is easily bypassed by users who might not realize that it's not
safe to run pg_upgrade against a filesystem backup.

BTW, I also noticed while trying to test this that pg_upgrade is
currently completely broken for the case of taking PGDATAOLD or
PGDATANEW from the environment rather than switches.  This is because
the existing coding in option.c fails to set up the "pgconfig" fields
in such cases.

            regards, tom lane

Re: Problem with pg_upgrade

От
Bruce Momjian
Дата:
On Thu, Jul 05, 2012 at 06:28:31PM -0400, Tom Lane wrote:
> Payal Singh <payals1@umbc.edu> writes:
> > On Thu, Jul 5, 2012 at 12:15 PM, Craig Ringer <ringerc@ringerc.id.au> wrote:
> >> If you start 9.1 on a copy of the backup then cleanly stop it again, does
> >> pg_upgrade then run?
>
> > Thank you. That worked.
>
> ISTM that pg_upgrade should check that the old cluster was shut down
> cleanly, ie pg_control has state = "shut down".  AFAICT from some
> testing, it currently only checks that there is no postmaster.pid file,
> which is easily bypassed by users who might not realize that it's not
> safe to run pg_upgrade against a filesystem backup.

I am confused.  pg_upgrade certainly starts/stops the old and new server
with pg_ctl before copying any files --- isn't that sufficent?

> BTW, I also noticed while trying to test this that pg_upgrade is
> currently completely broken for the case of taking PGDATAOLD or
> PGDATANEW from the environment rather than switches.  This is because
> the existing coding in option.c fails to set up the "pgconfig" fields
> in such cases.

Oh, good catch.  Fixed with the attached patch, and backpatched to 9.2.

--
  Bruce Momjian  <bruce@momjian.us>        http://momjian.us
  EnterpriseDB                             http://enterprisedb.com

  + It's impossible for everything to be true. +

Вложения

Re: Problem with pg_upgrade

От
Bruce Momjian
Дата:
On Fri, Jul 06, 2012 at 01:20:21PM -0400, Payal Singh wrote:
> Hi,
>
> I restored the backup on 9.1, made sure the database reached a consistent state
> and checkpointed. Then I performed the upgrade. Upgrade completed successfully
> but on running vacuumdb it gave the exact same error. The contents of log file
> are:
>
>
>  1. 2012-07-06 12:08:08 EDT [] [21723]: [1-1] user=,db=,e=00000: LOG:  database
>     system was interrupted while in recovery at log time 2012-07-03 03:07:02
>     EDT

Any idea why you are seeing the above "interrupted while in recovery"
message?

>  2. 2012-07-06 12:08:08 EDT [] [21723]: [2-1] user=,db=,e=00000: HINT:  If this
>     has occurred more than once some data might be corrupted and you might need
>     to choose an earlier recovery target.
>  3. 2012-07-06 12:08:08 EDT [] [21723]: [3-1] user=,db=,e=00000: LOG:  creating
>     missing WAL directory "pg_xlog/archive_status"
>  4. 2012-07-06 12:08:08 EDT [] [21723]: [4-1] user=,db=,e=00000: LOG:  database
>     system was not properly shut down; automatic recovery in progress

The above is also confusing.  pg_upgrade uses pg_ctl -w stop/start, so I
am confused, how it could show as recovering.

>
> Also, this time I did not run vacuumdb on old server before performing the
> upgrade.

I think you had better show us exactly what you are doing here --- how
you are setting up these clusters, how you are running pg_upgrade, what
commands you are typing, etc.

--
  Bruce Momjian  <bruce@momjian.us>        http://momjian.us
  EnterpriseDB                             http://enterprisedb.com

  + It's impossible for everything to be true. +

Re: Problem with pg_upgrade

От
Bruce Momjian
Дата:
On Fri, Jul 06, 2012 at 02:22:28PM -0400, Payal Singh wrote:
> The first message in the log is probably because the backup is taken from a
> standby. I am using omnipitr-backup-slave to make the backups and then
> restoring one of those.

OK, this is what I wanted to see.  Is the server running while you are
taking these backups, because that will not work.

> The whole process that I followed is:
>
>
>  1. Restoring backup file:
>  2.
>  3. payal@sparedb1:/data/pg$ sudo tar -xvzf /mnt/nas/backups/postgres/
>     userslave2/backups/data/userslave2.int.functionx.net-xlog-2012-07-03.tar.gz

> 489. payal@sparedb1:/data/pg$ sudo tar -xvzf /mnt/nas/backups/postgres/
>     userslave2/backups/data/userslave2.int.functionx.net-xlog-2012-07-03.tar.gz
> 490. 9.1/pg_xlog/
> 491. 9.1/pg_xlog/000000010000027C00000070
> 492. 9.1/pg_xlog/000000010000027C0000006B.009707C0.backup
> 493. 9.1/pg_xlog/000000010000027C0000006D
> 494. 9.1/pg_xlog/000000010000027C0000006C
> 495. 9.1/pg_xlog/000000010000027C0000006B
> 496. 9.1/pg_xlog/000000010000027C0000006E
> 497. 9.1/pg_xlog/000000010000027C00000071
> 498. 9.1/pg_xlog/000000010000027C0000006F

Why is the xlog backup a separate step?  Because it is a separate file
system?  The system is down, I assume.

If you run vacuumedb now, does everything later work fine?

--
  Bruce Momjian  <bruce@momjian.us>        http://momjian.us
  EnterpriseDB                             http://enterprisedb.com

  + It's impossible for everything to be true. +

Re: Problem with pg_upgrade

От
Payal Singh
Дата:
The omnipitr-backup-slave process takes online backups from the standby,
and this is done everyday. This process connects to the master and calls a
pg_start_backup and then looks for a restore point on the standby after
that WAL address. So i don't think I need to shut down the server.

Also, it is the omnipitr-backup-slave process that makes a separate backup
for xlog.

If you run vacuumedb now, does everything later work fine?


I'm not sure about that. Didn't try anything else after that. The 9.2beta2
server starts without errors though.

Regards,
Payal

On Fri, Jul 6, 2012 at 3:30 PM, Bruce Momjian <bruce@momjian.us> wrote:

> On Fri, Jul 06, 2012 at 02:22:28PM -0400, Payal Singh wrote:
> > The first message in the log is probably because the backup is taken
> from a
> > standby. I am using omnipitr-backup-slave to make the backups and then
> > restoring one of those.
>
> OK, this is what I wanted to see.  Is the server running while you are
> taking these backups, because that will not work.
>
> > The whole process that I followed is:
> >
> >
> >  1. Restoring backup file:
> >  2.
> >  3. payal@sparedb1:/data/pg$ sudo tar -xvzf /mnt/nas/backups/postgres/
> >
> userslave2/backups/data/userslave2.int.functionx.net-xlog-2012-07-03.tar.gz
>
> > 489. payal@sparedb1:/data/pg$ sudo tar -xvzf /mnt/nas/backups/postgres/
> >
> userslave2/backups/data/userslave2.int.functionx.net-xlog-2012-07-03.tar.gz
> > 490. 9.1/pg_xlog/
> > 491. 9.1/pg_xlog/000000010000027C00000070
> > 492. 9.1/pg_xlog/000000010000027C0000006B.009707C0.backup
> > 493. 9.1/pg_xlog/000000010000027C0000006D
> > 494. 9.1/pg_xlog/000000010000027C0000006C
> > 495. 9.1/pg_xlog/000000010000027C0000006B
> > 496. 9.1/pg_xlog/000000010000027C0000006E
> > 497. 9.1/pg_xlog/000000010000027C00000071
> > 498. 9.1/pg_xlog/000000010000027C0000006F
>
> Why is the xlog backup a separate step?  Because it is a separate file
> system?  The system is down, I assume.
>
> If you run vacuumedb now, does everything later work fine?
>
> --
>   Bruce Momjian  <bruce@momjian.us>        http://momjian.us
>   EnterpriseDB                             http://enterprisedb.com
>
>   + It's impossible for everything to be true. +
>



--
Payal Singh
Graduate Student
Department of Computer Science and Electrical Engineering
University of Maryland, Baltimore County

Re: Problem with pg_upgrade

От
Bruce Momjian
Дата:
On Fri, Jul 06, 2012 at 04:03:38PM -0400, Payal Singh wrote:
> The omnipitr-backup-slave process takes online backups from the standby, and
> this is done everyday. This process connects to the master and calls a
> pg_start_backup and then looks for a restore point on the standby after that
> WAL address. So i don't think I need to shut down the server.

My guess is if you try pg_upgrade without omnipitr-backup-slave, and it
works, odds are something about your use of omnipitr-backup-slave is
wrong.

> Also, it is the omnipitr-backup-slave process that makes a separate backup for
> xlog.
>
>
>     If you run vacuumedb now, does everything later work fine?
>
>
> I'm not sure about that. Didn't try anything else after that. The 9.2beta2
> server starts without errors though.

True, but it seems like something it wrong about the cluster, as is
shown by vacuumdb.

---------------------------------------------------------------------------


>
> Regards,
> Payal
>
> On Fri, Jul 6, 2012 at 3:30 PM, Bruce Momjian <bruce@momjian.us> wrote:
>
>     On Fri, Jul 06, 2012 at 02:22:28PM -0400, Payal Singh wrote:
>     > The first message in the log is probably because the backup is taken from
>     a
>     > standby. I am using omnipitr-backup-slave to make the backups and then
>     > restoring one of those.
>
>     OK, this is what I wanted to see.  Is the server running while you are
>     taking these backups, because that will not work.
>
>     > The whole process that I followed is:
>     >
>     >
>     >  1. Restoring backup file:
>     >  2.
>     >  3. payal@sparedb1:/data/pg$ sudo tar -xvzf /mnt/nas/backups/postgres/
>     >     userslave2/backups/data/
>     userslave2.int.functionx.net-xlog-2012-07-03.tar.gz
>
>     > 489. payal@sparedb1:/data/pg$ sudo tar -xvzf /mnt/nas/backups/postgres/
>     >     userslave2/backups/data/
>     userslave2.int.functionx.net-xlog-2012-07-03.tar.gz
>     > 490. 9.1/pg_xlog/
>     > 491. 9.1/pg_xlog/000000010000027C00000070
>     > 492. 9.1/pg_xlog/000000010000027C0000006B.009707C0.backup
>     > 493. 9.1/pg_xlog/000000010000027C0000006D
>     > 494. 9.1/pg_xlog/000000010000027C0000006C
>     > 495. 9.1/pg_xlog/000000010000027C0000006B
>     > 496. 9.1/pg_xlog/000000010000027C0000006E
>     > 497. 9.1/pg_xlog/000000010000027C00000071
>     > 498. 9.1/pg_xlog/000000010000027C0000006F
>
>     Why is the xlog backup a separate step?  Because it is a separate file
>     system?  The system is down, I assume.
>
>     If you run vacuumedb now, does everything later work fine?
>
>     --
>       Bruce Momjian  <bruce@momjian.us>        http://momjian.us
>       EnterpriseDB                             http://enterprisedb.com
>
>       + It's impossible for everything to be true. +
>
>
>
>
> --
> Payal Singh
> Graduate Student
> Department of Computer Science and Electrical Engineering
> University of Maryland, Baltimore County

--
  Bruce Momjian  <bruce@momjian.us>        http://momjian.us
  EnterpriseDB                             http://enterprisedb.com

  + It's impossible for everything to be true. +

Re: Problem with pg_upgrade

От
Payal Singh
Дата:
If something was wrong with the cluster, why did vacuumdb on new server run
successfully when I followed Craig's suggestion of running vacuumdb on old
server first, before performing the upgrade, and then ran vacuumdb on new
one?

On Fri, Jul 6, 2012 at 4:05 PM, Bruce Momjian <bruce@momjian.us> wrote:

> On Fri, Jul 06, 2012 at 04:03:38PM -0400, Payal Singh wrote:
> > The omnipitr-backup-slave process takes online backups from the standby,
> and
> > this is done everyday. This process connects to the master and calls a
> > pg_start_backup and then looks for a restore point on the standby after
> that
> > WAL address. So i don't think I need to shut down the server.
>
> My guess is if you try pg_upgrade without omnipitr-backup-slave, and it
> works, odds are something about your use of omnipitr-backup-slave is
> wrong.
>
> > Also, it is the omnipitr-backup-slave process that makes a separate
> backup for
> > xlog.
> >
> >
> >     If you run vacuumedb now, does everything later work fine?
> >
> >
> > I'm not sure about that. Didn't try anything else after that. The
> 9.2beta2
> > server starts without errors though.
>
> True, but it seems like something it wrong about the cluster, as is
> shown by vacuumdb.
>
> ---------------------------------------------------------------------------
>
>
> >
> > Regards,
> > Payal
> >
> > On Fri, Jul 6, 2012 at 3:30 PM, Bruce Momjian <bruce@momjian.us> wrote:
> >
> >     On Fri, Jul 06, 2012 at 02:22:28PM -0400, Payal Singh wrote:
> >     > The first message in the log is probably because the backup is
> taken from
> >     a
> >     > standby. I am using omnipitr-backup-slave to make the backups and
> then
> >     > restoring one of those.
> >
> >     OK, this is what I wanted to see.  Is the server running while you
> are
> >     taking these backups, because that will not work.
> >
> >     > The whole process that I followed is:
> >     >
> >     >
> >     >  1. Restoring backup file:
> >     >  2.
> >     >  3. payal@sparedb1:/data/pg$ sudo tar -xvzf
> /mnt/nas/backups/postgres/
> >     >     userslave2/backups/data/
> >     userslave2.int.functionx.net-xlog-2012-07-03.tar.gz
> >
> >     > 489. payal@sparedb1:/data/pg$ sudo tar -xvzf
> /mnt/nas/backups/postgres/
> >     >     userslave2/backups/data/
> >     userslave2.int.functionx.net-xlog-2012-07-03.tar.gz
> >     > 490. 9.1/pg_xlog/
> >     > 491. 9.1/pg_xlog/000000010000027C00000070
> >     > 492. 9.1/pg_xlog/000000010000027C0000006B.009707C0.backup
> >     > 493. 9.1/pg_xlog/000000010000027C0000006D
> >     > 494. 9.1/pg_xlog/000000010000027C0000006C
> >     > 495. 9.1/pg_xlog/000000010000027C0000006B
> >     > 496. 9.1/pg_xlog/000000010000027C0000006E
> >     > 497. 9.1/pg_xlog/000000010000027C00000071
> >     > 498. 9.1/pg_xlog/000000010000027C0000006F
> >
> >     Why is the xlog backup a separate step?  Because it is a separate
> file
> >     system?  The system is down, I assume.
> >
> >     If you run vacuumedb now, does everything later work fine?
> >
> >     --
> >       Bruce Momjian  <bruce@momjian.us>        http://momjian.us
> >       EnterpriseDB                             http://enterprisedb.com
> >
> >       + It's impossible for everything to be true. +
> >
> >
> >
> >
> > --
> > Payal Singh
> > Graduate Student
> > Department of Computer Science and Electrical Engineering
> > University of Maryland, Baltimore County
>
> --
>   Bruce Momjian  <bruce@momjian.us>        http://momjian.us
>   EnterpriseDB                             http://enterprisedb.com
>
>   + It's impossible for everything to be true. +
>



--
Payal Singh
Graduate Student
Department of Computer Science and Electrical Engineering
University of Maryland, Baltimore County

Re: Problem with pg_upgrade

От
Bruce Momjian
Дата:
On Fri, Jul 06, 2012 at 04:21:06PM -0400, Payal Singh wrote:
> If something was wrong with the cluster, why did vacuumdb on new server run
> successfully when I followed Craig's suggestion of running vacuumdb on old
> server first, before performing the upgrade, and then ran vacuumdb on new one?

My guess is there is something odd about the old cluster that was
somehow fixed by the vacuumedb on the old clsuter that can't be fixed by
vacuumdb on the new cluster.

---------------------------------------------------------------------------


>
> On Fri, Jul 6, 2012 at 4:05 PM, Bruce Momjian <bruce@momjian.us> wrote:
>
>     On Fri, Jul 06, 2012 at 04:03:38PM -0400, Payal Singh wrote:
>     > The omnipitr-backup-slave process takes online backups from the standby,
>     and
>     > this is done everyday. This process connects to the master and calls a
>     > pg_start_backup and then looks for a restore point on the standby after
>     that
>     > WAL address. So i don't think I need to shut down the server.
>
>     My guess is if you try pg_upgrade without omnipitr-backup-slave, and it
>     works, odds are something about your use of omnipitr-backup-slave is
>     wrong.
>
>     > Also, it is the omnipitr-backup-slave process that makes a separate
>     backup for
>     > xlog.
>     >
>     >
>     >     If you run vacuumedb now, does everything later work fine?
>     >
>     >
>     > I'm not sure about that. Didn't try anything else after that. The
>     9.2beta2
>     > server starts without errors though.
>
>     True, but it seems like something it wrong about the cluster, as is
>     shown by vacuumdb.
>
>     ---------------------------------------------------------------------------
>
>
>     >
>     > Regards,
>     > Payal
>     >
>     > On Fri, Jul 6, 2012 at 3:30 PM, Bruce Momjian <bruce@momjian.us> wrote:
>     >
>     >     On Fri, Jul 06, 2012 at 02:22:28PM -0400, Payal Singh wrote:
>     >     > The first message in the log is probably because the backup is
>     taken from
>     >     a
>     >     > standby. I am using omnipitr-backup-slave to make the backups and
>     then
>     >     > restoring one of those.
>     >
>     >     OK, this is what I wanted to see.  Is the server running while you
>     are
>     >     taking these backups, because that will not work.
>     >
>     >     > The whole process that I followed is:
>     >     >
>     >     >
>     >     >  1. Restoring backup file:
>     >     >  2.
>     >     >  3. payal@sparedb1:/data/pg$ sudo tar -xvzf /mnt/nas/backups/
>     postgres/
>     >     >     userslave2/backups/data/
>     >     userslave2.int.functionx.net-xlog-2012-07-03.tar.gz
>     >
>     >     > 489. payal@sparedb1:/data/pg$ sudo tar -xvzf /mnt/nas/backups/
>     postgres/
>     >     >     userslave2/backups/data/
>     >     userslave2.int.functionx.net-xlog-2012-07-03.tar.gz
>     >     > 490. 9.1/pg_xlog/
>     >     > 491. 9.1/pg_xlog/000000010000027C00000070
>     >     > 492. 9.1/pg_xlog/000000010000027C0000006B.009707C0.backup
>     >     > 493. 9.1/pg_xlog/000000010000027C0000006D
>     >     > 494. 9.1/pg_xlog/000000010000027C0000006C
>     >     > 495. 9.1/pg_xlog/000000010000027C0000006B
>     >     > 496. 9.1/pg_xlog/000000010000027C0000006E
>     >     > 497. 9.1/pg_xlog/000000010000027C00000071
>     >     > 498. 9.1/pg_xlog/000000010000027C0000006F
>     >
>     >     Why is the xlog backup a separate step?  Because it is a separate
>     file
>     >     system?  The system is down, I assume.
>     >
>     >     If you run vacuumedb now, does everything later work fine?
>     >
>     >     --
>     >       Bruce Momjian  <bruce@momjian.us>        http://momjian.us
>     >       EnterpriseDB                             http://enterprisedb.com
>     >
>     >       + It's impossible for everything to be true. +
>     >
>     >
>     >
>     >
>     > --
>     > Payal Singh
>     > Graduate Student
>     > Department of Computer Science and Electrical Engineering
>     > University of Maryland, Baltimore County
>
>     --
>       Bruce Momjian  <bruce@momjian.us>        http://momjian.us
>       EnterpriseDB                             http://enterprisedb.com
>
>       + It's impossible for everything to be true. +
>
>
>
>
> --
> Payal Singh
> Graduate Student
> Department of Computer Science and Electrical Engineering
> University of Maryland, Baltimore County

--
  Bruce Momjian  <bruce@momjian.us>        http://momjian.us
  EnterpriseDB                             http://enterprisedb.com

  + It's impossible for everything to be true. +

Re: Problem with pg_upgrade

От
Payal Singh
Дата:
Okay. I guess so. Thanks for your help.

Regards,
Payal

On Fri, Jul 6, 2012 at 4:24 PM, Bruce Momjian <bruce@momjian.us> wrote:

> On Fri, Jul 06, 2012 at 04:21:06PM -0400, Payal Singh wrote:
> > If something was wrong with the cluster, why did vacuumdb on new server
> run
> > successfully when I followed Craig's suggestion of running vacuumdb on
> old
> > server first, before performing the upgrade, and then ran vacuumdb on
> new one?
>
> My guess is there is something odd about the old cluster that was
> somehow fixed by the vacuumedb on the old clsuter that can't be fixed by
> vacuumdb on the new cluster.
>
> ---------------------------------------------------------------------------
>
>
> >
> > On Fri, Jul 6, 2012 at 4:05 PM, Bruce Momjian <bruce@momjian.us> wrote:
> >
> >     On Fri, Jul 06, 2012 at 04:03:38PM -0400, Payal Singh wrote:
> >     > The omnipitr-backup-slave process takes online backups from the
> standby,
> >     and
> >     > this is done everyday. This process connects to the master and
> calls a
> >     > pg_start_backup and then looks for a restore point on the standby
> after
> >     that
> >     > WAL address. So i don't think I need to shut down the server.
> >
> >     My guess is if you try pg_upgrade without omnipitr-backup-slave, and
> it
> >     works, odds are something about your use of omnipitr-backup-slave is
> >     wrong.
> >
> >     > Also, it is the omnipitr-backup-slave process that makes a separate
> >     backup for
> >     > xlog.
> >     >
> >     >
> >     >     If you run vacuumedb now, does everything later work fine?
> >     >
> >     >
> >     > I'm not sure about that. Didn't try anything else after that. The
> >     9.2beta2
> >     > server starts without errors though.
> >
> >     True, but it seems like something it wrong about the cluster, as is
> >     shown by vacuumdb.
> >
> >
> ---------------------------------------------------------------------------
> >
> >
> >     >
> >     > Regards,
> >     > Payal
> >     >
> >     > On Fri, Jul 6, 2012 at 3:30 PM, Bruce Momjian <bruce@momjian.us>
> wrote:
> >     >
> >     >     On Fri, Jul 06, 2012 at 02:22:28PM -0400, Payal Singh wrote:
> >     >     > The first message in the log is probably because the backup
> is
> >     taken from
> >     >     a
> >     >     > standby. I am using omnipitr-backup-slave to make the
> backups and
> >     then
> >     >     > restoring one of those.
> >     >
> >     >     OK, this is what I wanted to see.  Is the server running while
> you
> >     are
> >     >     taking these backups, because that will not work.
> >     >
> >     >     > The whole process that I followed is:
> >     >     >
> >     >     >
> >     >     >  1. Restoring backup file:
> >     >     >  2.
> >     >     >  3. payal@sparedb1:/data/pg$ sudo tar -xvzf
> /mnt/nas/backups/
> >     postgres/
> >     >     >     userslave2/backups/data/
> >     >     userslave2.int.functionx.net-xlog-2012-07-03.tar.gz
> >     >
> >     >     > 489. payal@sparedb1:/data/pg$ sudo tar -xvzf
> /mnt/nas/backups/
> >     postgres/
> >     >     >     userslave2/backups/data/
> >     >     userslave2.int.functionx.net-xlog-2012-07-03.tar.gz
> >     >     > 490. 9.1/pg_xlog/
> >     >     > 491. 9.1/pg_xlog/000000010000027C00000070
> >     >     > 492. 9.1/pg_xlog/000000010000027C0000006B.009707C0.backup
> >     >     > 493. 9.1/pg_xlog/000000010000027C0000006D
> >     >     > 494. 9.1/pg_xlog/000000010000027C0000006C
> >     >     > 495. 9.1/pg_xlog/000000010000027C0000006B
> >     >     > 496. 9.1/pg_xlog/000000010000027C0000006E
> >     >     > 497. 9.1/pg_xlog/000000010000027C00000071
> >     >     > 498. 9.1/pg_xlog/000000010000027C0000006F
> >     >
> >     >     Why is the xlog backup a separate step?  Because it is a
> separate
> >     file
> >     >     system?  The system is down, I assume.
> >     >
> >     >     If you run vacuumedb now, does everything later work fine?
> >     >
> >     >     --
> >     >       Bruce Momjian  <bruce@momjian.us>        http://momjian.us
> >     >       EnterpriseDB
> http://enterprisedb.com
> >     >
> >     >       + It's impossible for everything to be true. +
> >     >
> >     >
> >     >
> >     >
> >     > --
> >     > Payal Singh
> >     > Graduate Student
> >     > Department of Computer Science and Electrical Engineering
> >     > University of Maryland, Baltimore County
> >
> >     --
> >       Bruce Momjian  <bruce@momjian.us>        http://momjian.us
> >       EnterpriseDB                             http://enterprisedb.com
> >
> >       + It's impossible for everything to be true. +
> >
> >
> >
> >
> > --
> > Payal Singh
> > Graduate Student
> > Department of Computer Science and Electrical Engineering
> > University of Maryland, Baltimore County
>
> --
>   Bruce Momjian  <bruce@momjian.us>        http://momjian.us
>   EnterpriseDB                             http://enterprisedb.com
>
>   + It's impossible for everything to be true. +
>



--
Payal Singh
Graduate Student
Department of Computer Science and Electrical Engineering
University of Maryland, Baltimore County