Thread: File System backup
Hi all,
Can any one give me more suggestion, about this problem. Every time my os got restart, postmaster.pid is missing. After that createing postmaster.pid is also not helping to start the server. I am using postgresql 9.2 in ubuntu, with default installation. Is there any possibility i can take the Data directory backup, and install postgresql server, then restore Data directory. Will it work to get back my databases.On Fri, Jun 21, 2013 at 7:53 PM, itishree sukla <itishree.sukla@gmail.com> wrote: > Hi all, > > Can any one give me more suggestion, about this problem. Every time my os > got restart, postmaster.pid is missing. After that createing postmaster.pid > is also not helping to start the server. I am using postgresql 9.2 in > ubuntu, with default installation. Is there any possibility i can take the > Data directory backup, and install postgresql server, then restore Data > directory. Will it work to get back my databases. Can you tell what command you use to start the server and when you issue it? Is that after OS restarts?) Did you, by any chance, use "restart" whereas you should have used "start" assuming you are using pg_ctl for the same? Issuing "restart" requires that you should already have server running (and that means postmaster.pid should be there in data directory). -- Amit Langote
No, as its only one postgresql is running with default installation, server got restatared with out shuting down postgresql service properly. Then i tied to start server using ./init.d command, which didn't help me either. Then i created pstmaster.pid, that also doesn't help me much.
Regards,
Itishree
On Fri, Jun 21, 2013 at 6:10 PM, Amit Langote <amitlangote09@gmail.com> wrote:
Can you tell what command you use to start the server and when youOn Fri, Jun 21, 2013 at 7:53 PM, itishree sukla
<itishree.sukla@gmail.com> wrote:
> Hi all,
>
> Can any one give me more suggestion, about this problem. Every time my os
> got restart, postmaster.pid is missing. After that createing postmaster.pid
> is also not helping to start the server. I am using postgresql 9.2 in
> ubuntu, with default installation. Is there any possibility i can take the
> Data directory backup, and install postgresql server, then restore Data
> directory. Will it work to get back my databases.
issue it? Is that after OS restarts?) Did you, by any chance, use
"restart" whereas you should have used "start" assuming you are using
pg_ctl for the same?
Issuing "restart" requires that you should already have server running
(and that means postmaster.pid should be there in data directory).
--
Amit Langote
On 06/21/2013 10:37 AM, itishree sukla wrote: > No, as its only one postgresql is running with default installation, > server got restatared with out shuting down postgresql service properly. > Then i tied to start server using ./init.d command, which didn't help me > either. Then i created pstmaster.pid, that also doesn't help me much. So what messages did you see at the console when you ran the /init.d script? > Regards, > Itishree > > On Fri, Jun 21, 2013 at 6:10 PM, Amit Langote <amitlangote09@gmail.com > <mailto:amitlangote09@gmail.com>> wrote: > > On Fri, Jun 21, 2013 at 7:53 PM, itishree sukla > <itishree.sukla@gmail.com <mailto:itishree.sukla@gmail.com>> wrote: > > Hi all, > > > > Can any one give me more suggestion, about this problem. Every > time my os > > got restart, postmaster.pid is missing. After that createing > postmaster.pid > > is also not helping to start the server. I am using postgresql > 9.2 in > > ubuntu, with default installation. Is there any possibility i can > take the > > Data directory backup, and install postgresql server, then > restore Data > > directory. Will it work to get back my databases. > > Can you tell what command you use to start the server and when you > issue it? Is that after OS restarts?) Did you, by any chance, use > "restart" whereas you should have used "start" assuming you are using > pg_ctl for the same? > > Issuing "restart" requires that you should already have server running > (and that means postmaster.pid should be there in data directory). > > -- > Amit Langote > > -- Adrian Klaver adrian.klaver@gmail.com
On Jun 21, 2013, at 12:53, itishree sukla <itishree.sukla@gmail.com> wrote: > Hi all, > > Can any one give me more suggestion, about this problem. Every time my os got restart, postmaster.pid is missing. Did you perhaps use reboot instead of shutdown -r? The former doesn't do a clean shutdown. That's how it is on *BSD at least,I don't know about Linux but I assume it behaves the same. > After that createing postmaster.pid is also not helping to start the server. Ehrm no, the opposite in fact. If the postmaster PID exists, the postmaster won't start because having multiple postmastersrunning would get you data corruption. > I am using postgresql 9.2 in ubuntu, with default installation. Is there any possibility i can take the Data directorybackup, and install postgresql server, then restore Data directory. Will it work to get back my databases. What do you hope to accomplish by reinstalling the software? That's most likely not where the problem is. Check the logs to see if there are any errors when postgres tries to start up. It could be something as simple as a libraryversion mismatch, or it could be data corruption in the database files. What file-system is the database on? Is it possible a journal rollback caused inconsistency in the database? Alban Hertroys -- If you can't see the forest for the trees, cut the trees and you'll find there is no forest.
Alban Hertroys <haramrae@gmail.com> wrote: > itishree sukla <itishree.sukla@gmail.com> wrote: >> Can any one give me more suggestion, about this problem. Every >> time my os got restart, postmaster.pid is missing. The pid file should only be present when postgres is running. A clean OS shutdown should stop postgres, which should result in the pid file being deleted. > Did you perhaps use reboot instead of shutdown -r? The former > doesn't do a clean shutdown. That's how it is on *BSD at least, I > don't know about Linux but I assume it behaves the same. No, `reboot` actually calls `shutdown -r now` in the distros I've used, including Ubuntu; unless you run it with the --force option. > Check the logs to see if there are any errors when postgres tries > to start up. It could be something as simple as a library version > mismatch, or it could be data corruption in the database files. Right, checking the log files is the thing to do. Adding or deleting a pid file is just about never the right thing to do. -- Kevin Grittner EnterpriseDB: http://www.enterprisedb.com The Enterprise PostgreSQL Company
yes, when i tried to start, postgresql service using init.d its gave me the error removed stale pid, postgresql failed to start.
Regards,
Itishree
On Sat, Jun 22, 2013 at 8:05 PM, Kevin Grittner <kgrittn@ymail.com> wrote:
Alban Hertroys <haramrae@gmail.com> wrote:> itishree sukla <itishree.sukla@gmail.com> wrote:The pid file should only be present when postgres is running. A
>> Can any one give me more suggestion, about this problem. Every
>> time my os got restart, postmaster.pid is missing.
clean OS shutdown should stop postgres, which should result in the
pid file being deleted.No, `reboot` actually calls `shutdown -r now` in the distros I've
> Did you perhaps use reboot instead of shutdown -r? The former
> doesn't do a clean shutdown. That's how it is on *BSD at least, I
> don't know about Linux but I assume it behaves the same.
used, including Ubuntu; unless you run it with the --force option.Right, checking the log files is the thing to do. Adding or
> Check the logs to see if there are any errors when postgres tries
> to start up. It could be something as simple as a library version
> mismatch, or it could be data corruption in the database files.
deleting a pid file is just about never the right thing to do.
--
Kevin Grittner
EnterpriseDB: http://www.enterprisedb.com
The Enterprise PostgreSQL Company
>> yes, when i tried to start, postgresql service using init.d its gave me the >> error removed stale pid, postgresql failed to start. >> >> Regards, >> Itishree >> >> Hi, have you tried to execute the startup sequence step by step? On systems without systemd, something like sh -x /etc/init.d/postgresql start 2>&1 | less should reveal the entire sequence. I dont know whether systemd has something to help, I really did a step by step run one time Regards Wolfgang Hamann
On 06/22/2013 10:32 PM, itishree sukla wrote: > yes, when i tried to start, postgresql service using init.d its gave me > the error removed stale pid, postgresql failed to start. What is the actual error message? > > Regards, > Itishree > -- Adrian Klaver adrian.klaver@gmail.com
Hi,
I am trying to load CSV files into postgresql via pgloader, it returned the following error, any suggestions to fix it?
I have a line "lc_messages = C" in my pgloader.conf, would this line cause the problem?
regards
pgloader ERROR permission denied to set parameter "lc_messages"
pgloader ERROR permission denied to set parameter "lc_messages"
Traceback (most recent call last):
File "/usr/bin/pgloader", line 779, in <module>
ret = load_data()
File "/usr/bin/pgloader", line 687, in load_data
(started[s], finished[s]), summary[s])
File "/usr/lib/pymodules/python2.7/pgloader/pgloader.py", line 142, in __init__
self._read_conf(name, config, db)
File "/usr/lib/pymodules/python2.7/pgloader/pgloader.py", line 328, in _read_conf
self.columns = self.db.get_all_columns(self.table)
File "/usr/lib/pymodules/python2.7/pgloader/db.py", line 153, in get_all_columns
self.reset()
File "/usr/lib/pymodules/python2.7/pgloader/db.py", line 189, in reset
self.set_pg_options()
File "/usr/lib/pymodules/python2.7/pgloader/db.py", line 117, in set_pg_options
raise PGLoader_Error, e
pgloader.tools.PGLoader_Error: permission denied to set parameter "lc_messages"
On 06/25/2013 12:05 AM, ascot.moss@gmail.com wrote: > Hi, > > I am trying to load CSV files into postgresql via pgloader, it returned the following error, any suggestions to fix it? > > I have a line "lc_messages = C" in my pgloader.conf, would this line cause the problem? Assuming you are not running as a superuser, yes: http://www.postgresql.org/docs/9.2/static/runtime-config-client.html lc_messages (string) ... Only superusers can change this setting, because it affects the messages sent to the server log as well as to the client, and an improper value might obscure the readability of the server logs. > > regards > -- Adrian Klaver adrian.klaver@gmail.com