Thread: move databases files location
hello, my postgresql installation from redhat package: $ rpm -q postgresql postgresql-7.4.17-1.RHEL4.1 is located in /var partition, unfortunalty it is nearly full $ df -H . Filesystem Size Used Avail Use% Mounted on /dev/sda12 11G 8.2G 1.7G 84% /var How can I tell postgresql to record databases in an other partition ? For now they are in: [root@metarisk1 /var/lib/pgsql/data/base] $ ls 1 17142 18275591 26876456 537107 6123076 657110 802399 17141 17837306 18372925 533001 596944 61317 7321277 8500925 will it be simply a move of the files, or should I have to dump&restore the databases ? thanks.
jehan.procaccia wrote:
> my postgresql installation from redhat package:
> $ rpm -q postgresql
> postgresql-7.4.17-1.RHEL4.1
> is located in /var partition, unfortunalty it is nearly full
> $ df -H .
> Filesystem Size Used Avail Use% Mounted on
> /dev/sda12 11G 8.2G 1.7G 84% /var
>
> How can I tell postgresql to record databases in an other partition ?
> For now they are in:
> [root@metarisk1 /var/lib/pgsql/data/base]
> $ ls
> 1 17142 18275591 26876456 537107 6123076 657110 802399
> 17141 17837306 18372925 533001 596944 61317 7321277 8500925
>
> will it be simply a move of the files, or should I have to dump&restore
> the databases ?
I don't think 7.4 had tablespaces (check the manual). In which case
you'll have to do it manually.
1. Stop the database server.
2. Create a new location for your db stuff /some/where/pgsql2/data/base
3. Move the directories you want over to the new location
4. Symlink each of the directories
cd /var/lib/pgsql/data/base
link -s /some/where/pgsql2/data/base/17142
5. Check ownership & permissions
6. Restart database
If you want to move all of them, rather than just individual databases
then you just need to move .../data and reset your PGDATA to point at
that. Can't remember where that gets set with the old RPMS - try in
/etc/postgresql or /etc/pgsql
--
Richard Huxton
Archonet Ltd
Richard Huxton wrote: > jehan.procaccia wrote: >> my postgresql installation from redhat package: >> $ rpm -q postgresql >> postgresql-7.4.17-1.RHEL4.1 >> is located in /var partition, unfortunalty it is nearly full >> $ df -H . >> Filesystem Size Used Avail Use% Mounted on >> /dev/sda12 11G 8.2G 1.7G 84% /var >> >> How can I tell postgresql to record databases in an other partition ? >> For now they are in: >> [root@metarisk1 /var/lib/pgsql/data/base] >> $ ls >> 1 17142 18275591 26876456 537107 6123076 657110 802399 >> 17141 17837306 18372925 533001 596944 61317 7321277 8500925 >> >> will it be simply a move of the files, or should I have to >> dump&restore the databases ? > > I don't think 7.4 had tablespaces (check the manual). In which case > you'll have to do it manually. > > 1. Stop the database server. > 2. Create a new location for your db stuff /some/where/pgsql2/data/base > 3. Move the directories you want over to the new location > 4. Symlink each of the directories > cd /var/lib/pgsql/data/base > link -s /some/where/pgsql2/data/base/17142 > 5. Check ownership & permissions > 6. Restart database > > If you want to move all of them, rather than just individual databases > then you just need to move .../data and reset your PGDATA to point at > that. Can't remember where that gets set with the old RPMS - try in > /etc/postgresql or /etc/pgsql > apperently PGDATA is set in .bash_profile and points to /var/lib/pgsql/data: [postgres@server ~] $ cat .bash_profile PGDATA=/var/lib/pgsql/data [ -f $PGDATA/../initdb.i18n ] && source $PGDATA/../initdb.i18n export PGDATA So I suppose I'll have to stop postgres, move (or copy to be safe ..) /var/lib/pgsql/data to /data2/pgsql/data (/data2 is a file system with plenty of space) , set PGDATA=/data2/pgsql/data and restart postgres, that's all ? thanks for a confirmation.