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postgres 8 data directory other then default? 4+ messages / 2 participants [nested] [flat]
* postgres 8 data directory other then default? @ 2005-02-10 19:47 Joel Fradkin <jfradkin@wazagua.com> 0 siblings, 1 reply; 4+ messages in thread From: Joel Fradkin @ 2005-02-10 19:47 UTC (permalink / raw) To: pgsql-sql I am trying to use a different drive for the data. I have edited postgres.conf to point to the new location, but I get the error /pgdata/PG_VERSION is missing. Do I have to do a initdb? When I try an initdb it says it is not empty. (has lost and found folder in it). Fedora Core 3 linux. I was able to do an init db if I create a folder called data in the pgdata, but I was not sure if it then would use that folder for all the files (I just want my data to be there). I also want to move my wal files to the /wal drives once I get it to start using pgdata drive for data. I got some info on this 0) backup your data 1) stop postmaster and verify. 2) cd $PGDATA; mv pg_xlog original_pg_xlog; ln -s /wal pg_xlog; cp original_pg_xlog/* pg_xlog 3) start postmaster and confirm correct startup in log files. Will this work? I am guessing this info would be in the var/lib folder not the /pgdata folder? Thanks in advance and sorry for asking so many dumb newb questions. Least this time the install of 8 went super smooth, just went to the postgres site and got the rpm's (Since I did not install 7 with the OS it asked for the fedora cd's a few times but all rpm's went ok). On the 8.1 files which are in tar files do I need to get those as well to get to 8.1 if so what is the procedure other then copying the files to my system (I have the .tar.bz) Joel Fradkin Wazagua, Inc. 2520 Trailmate Dr Sarasota, Florida 34243 Tel. 941-753-7111 ext 305 jfradkin@wazagua.com www.wazagua.com Powered by Wazagua Providing you with the latest Web-based technology & advanced tools. C 2004. WAZAGUA, Inc. All rights reserved. WAZAGUA, Inc This email message is for the use of the intended recipient(s) and may contain confidential and privileged information. Any unauthorized review, use, disclosure or distribution is prohibited. If you are not the intended recipient, please contact the sender by reply email and delete and destroy all copies of the original message, including attachments. ^ permalink raw reply [nested|flat] 4+ messages in thread
* postgres 8 data directory other then default? @ 2005-02-10 19:48 Joel Fradkin <jfradkin@wazagua.com> 0 siblings, 0 replies; 4+ messages in thread From: Joel Fradkin @ 2005-02-10 19:48 UTC (permalink / raw) To: pgsql-sql I am trying to use a different drive for the data. I have edited postgres.conf to point to the new location, but I get the error /pgdata/PG_VERSION is missing. Do I have to do a initdb? When I try an initdb it says it is not empty. (has lost and found folder in it). Fedora Core 3 linux. I was able to do an init db if I create a folder called data in the pgdata, but I was not sure if it then would use that folder for all the files (I just want my data to be there). I also want to move my wal files to the /wal drives once I get it to start using pgdata drive for data. I got some info on this 0) backup your data 1) stop postmaster and verify. 2) cd $PGDATA; mv pg_xlog original_pg_xlog; ln -s /wal pg_xlog; cp original_pg_xlog/* pg_xlog 3) start postmaster and confirm correct startup in log files. Will this work? I am guessing this info would be in the var/lib folder not the /pgdata folder? Thanks in advance and sorry for asking so many dumb newb questions. Least this time the install of 8 went super smooth, just went to the postgres site and got the rpm’s (Since I did not install 7 with the OS it asked for the fedora cd’s a few times but all rpm’s went ok). On the 8.1 files which are in tar files do I need to get those as well to get to 8.1 if so what is the procedure other then copying the files to my system (I have the .tar.bz) Joel Fradkin Wazagua, Inc. 2520 Trailmate Dr Sarasota, Florida 34243 Tel. 941-753-7111 ext 305 jfradkin@wazagua.com www.wazagua.com Powered by Wazagua Providing you with the latest Web-based technology & advanced tools. © 2004. WAZAGUA, Inc. All rights reserved. WAZAGUA, Inc This email message is for the use of the intended recipient(s) and may contain confidential and privileged information. Any unauthorized review, use, disclosure or distribution is prohibited. If you are not the intended recipient, please contact the sender by reply email and delete and destroy all copies of the original message, including attachments. ^ permalink raw reply [nested|flat] 4+ messages in thread
* Re: postgres 8 data directory other then default? @ 2005-02-11 09:22 Richard Huxton <dev@archonet.com> parent: Joel Fradkin <jfradkin@wazagua.com> 0 siblings, 1 reply; 4+ messages in thread From: Richard Huxton @ 2005-02-11 09:22 UTC (permalink / raw) To: Joel Fradkin <jfradkin@wazagua.com>; +Cc: pgsql-sql Joel Fradkin wrote: > I am trying to use a different drive for the data. > > I have edited postgres.conf to point to the new location, but I get the > error /pgdata/PG_VERSION is missing. > > Do I have to do a initdb? > > When I try an initdb it says it is not empty. (has lost and found folder in > it). Create a sub-directory. Separate filesystems will have a lost+found folder at the top-level, so you'll need to create a directory called pgsql (or whatever). > Fedora Core 3 linux. > > I was able to do an init db if I create a folder called data in the pgdata, > but I was not sure if it then would use that folder for all the files (I > just want my data to be there). Ah - there you go then. All files live there unless you use tablespaces/symbolic links. > I also want to move my wal files to the /wal drives once I get it to start > using pgdata drive for data. > > I got some info on this > > 0) backup your data > 1) stop postmaster and verify. > 2) cd $PGDATA; mv pg_xlog original_pg_xlog; ln -s /wal pg_xlog; cp > original_pg_xlog/* pg_xlog > 3) start postmaster and confirm correct startup in log files. > > Will this work? I am guessing this info would be in the var/lib folder not > the /pgdata folder? Well, what you might want to do is: 1. Setup your .../pgsql/data folder on the WAL drive. 2. initb that location 3. Set up a tablespace for your data on the other drive(s) You can then have a default location for your database, and even move a single table over to its own drive(s) if that's what you need. Details in the manuals (start at chapter 18, then check the details in the SQL reference). I'd test it with a sample database first, make sure you're practiced with it. Oh - if you do filesystem backups when the database is stopped, make sure you remember to back up the alternate tablespace. > Thanks in advance and sorry for asking so many dumb newb questions. > > Least this time the install of 8 went super smooth, just went to the > postgres site and got the rpm's (Since I did not install 7 with the OS it > asked for the fedora cd's a few times but all rpm's went ok). Excellent. > On the 8.1 files which are in tar files do I need to get those as well to > get to 8.1 if so what is the procedure other then copying the files to my > system (I have the .tar.bz) It'll be 8.0.1 rather then 8.1 and they'll be source files. You unpack them run configure and make and out pops a new version of PG. I'd recommend sticking with the RPMs for the moment. -- Richard Huxton Archonet Ltd ^ permalink raw reply [nested|flat] 4+ messages in thread
* Re: postgres 8 data directory other then default? @ 2005-02-11 19:02 Joel Fradkin <jfradkin@wazagua.com> parent: Richard Huxton <dev@archonet.com> 0 siblings, 0 replies; 4+ messages in thread From: Joel Fradkin @ 2005-02-11 19:02 UTC (permalink / raw) To: 'Richard Huxton' <dev@archonet.com>; +Cc: pgsql-sql Thank you for all the help. I was able to get system up (8.0 RPMS, not a build of 8.0.1) I installed to the normal /var/lib/pgsql/data directory. I did an initdb on the pgdata drive initdb /pgdata/data This created a data folder on that drive set. I used the instructions below for linking my wal to /wal drive. I edited the postgres.conf in /var/lib/pgsl/data to use the data_directory='pgdata/data' I am hoping this means the log files and such are on /var/lib/pgsql/data and that the actual data is on the pgdata/data and the wal is on the /wal. I could confirm the /pgdata and /wal sytems were growing in size as I added data to the database. Everyone on this list has been so super helpful; I could never have figured it out without all the guidance. I just wanted to thank everyone who jumped in with help. Stuff is so hard when you're ignorant. I know my way around the MSSQL world, and with the help here I feel I am getting started with Postgres. Silly stupid stuff like environment variables etc when your new take so long to figure out the right commands and where to put them, that's why I really appreciated the step by step help. I was thinking of documenting the whole process from install to finished working project. You all think this be a good idea, just post it here? Joel Fradkin Wazagua, Inc. 2520 Trailmate Dr Sarasota, Florida 34243 Tel. 941-753-7111 ext 305 jfradkin@wazagua.com www.wazagua.com Powered by Wazagua Providing you with the latest Web-based technology & advanced tools. C 2004. WAZAGUA, Inc. All rights reserved. WAZAGUA, Inc This email message is for the use of the intended recipient(s) and may contain confidential and privileged information. Any unauthorized review, use, disclosure or distribution is prohibited. If you are not the intended recipient, please contact the sender by reply email and delete and destroy all copies of the original message, including attachments. -----Original Message----- From: Richard Huxton [mailto:dev@archonet.com] Sent: Friday, February 11, 2005 4:22 AM To: Joel Fradkin Cc: pgsql-sql@postgresql.org Subject: Re: [SQL] postgres 8 data directory other then default? Joel Fradkin wrote: > I am trying to use a different drive for the data. > > I have edited postgres.conf to point to the new location, but I get the > error /pgdata/PG_VERSION is missing. > > Do I have to do a initdb? > > When I try an initdb it says it is not empty. (has lost and found folder in > it). Create a sub-directory. Separate filesystems will have a lost+found folder at the top-level, so you'll need to create a directory called pgsql (or whatever). > Fedora Core 3 linux. > > I was able to do an init db if I create a folder called data in the pgdata, > but I was not sure if it then would use that folder for all the files (I > just want my data to be there). Ah - there you go then. All files live there unless you use tablespaces/symbolic links. > I also want to move my wal files to the /wal drives once I get it to start > using pgdata drive for data. > > I got some info on this > > 0) backup your data > 1) stop postmaster and verify. > 2) cd $PGDATA; mv pg_xlog original_pg_xlog; ln -s /wal pg_xlog; cp > original_pg_xlog/* pg_xlog > 3) start postmaster and confirm correct startup in log files. > > Will this work? I am guessing this info would be in the var/lib folder not > the /pgdata folder? Well, what you might want to do is: 1. Setup your .../pgsql/data folder on the WAL drive. 2. initb that location 3. Set up a tablespace for your data on the other drive(s) You can then have a default location for your database, and even move a single table over to its own drive(s) if that's what you need. Details in the manuals (start at chapter 18, then check the details in the SQL reference). I'd test it with a sample database first, make sure you're practiced with it. Oh - if you do filesystem backups when the database is stopped, make sure you remember to back up the alternate tablespace. > Thanks in advance and sorry for asking so many dumb newb questions. > > Least this time the install of 8 went super smooth, just went to the > postgres site and got the rpm's (Since I did not install 7 with the OS it > asked for the fedora cd's a few times but all rpm's went ok). Excellent. > On the 8.1 files which are in tar files do I need to get those as well to > get to 8.1 if so what is the procedure other then copying the files to my > system (I have the .tar.bz) It'll be 8.0.1 rather then 8.1 and they'll be source files. You unpack them run configure and make and out pops a new version of PG. I'd recommend sticking with the RPMs for the moment. -- Richard Huxton Archonet Ltd ^ permalink raw reply [nested|flat] 4+ messages in thread
end of thread, other threads:[~2005-02-11 19:02 UTC | newest] Thread overview: 4+ messages (download: mbox mbox.gz follow: Atom feed) -- links below jump to the message on this page -- 2005-02-10 19:47 postgres 8 data directory other then default? Joel Fradkin <jfradkin@wazagua.com> 2005-02-11 09:22 ` Richard Huxton <dev@archonet.com> 2005-02-11 19:02 ` Joel Fradkin <jfradkin@wazagua.com> 2005-02-10 19:48 postgres 8 data directory other then default? Joel Fradkin <jfradkin@wazagua.com>
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