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Old 07-02-2020, 10:42 AM   #1
Sambrad
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Centos 7.6 partitioning directory problem


I need help with mounting a partition and making a directory on it
Running lsblk reveals
sda 8:0 0 558.4G 0 disk
├─sda1 8:1 0 1G 0 part /boot
└─sda2 8:2 0 557.4G 0 part
├─centos-root 253:0 0 50G 0 lvm /
├─centos-swap 253:1 0 15.7G 0 lvm [SWAP]
└─centos-home 253:2 0 491.7G 0 lvm /home
sdb 8:16 0 1.7T 0 disk
└─sdb1 8:17 0 200G 0 part /mnt
sr0 11:0 1 1024M 0 rom
I need to get sdb1 setup with a directory called database for use with ordering software and to get it viewable (does not show up using ls-a etc)
Please help as this is a real stumbling block for me
Thanks in advance for advice /help
 
Old 07-02-2020, 12:01 PM   #2
pan64
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it looks like sdb1 is mounted on /mnt. I do not really understand what do you want to achieve.
 
Old 07-02-2020, 12:39 PM   #3
Sambrad
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Quote:
Originally Posted by Sambrad View Post
I need help with mounting a partition and making a directory on it
Running lsblk reveals
sda 8:0 0 558.4G 0 disk
├─sda1 8:1 0 1G 0 part /boot
└─sda2 8:2 0 557.4G 0 part
├─centos-root 253:0 0 50G 0 lvm /
├─centos-swap 253:1 0 15.7G 0 lvm [SWAP]
└─centos-home 253:2 0 491.7G 0 lvm /home
sdb 8:16 0 1.7T 0 disk
└─sdb1 8:17 0 200G 0 part /mnt
sr0 11:0 1 1024M 0 rom
I need to get sdb1 setup with a directory called database for use with ordering software and to get it viewable (does not show up using ls-a etc)
Please help as this is a real stumbling block for me
Thanks in advance for advice /help
The Question of what I am trying to achieve is to have a repository for the database in a directory called database permanently mounted and findable by the main software on the first Raid 1 drive where the Centos operating system resides. The database is on the Raid 5 other 4 disks and just needs to be accessible at the moment it does not show up using any directory search ls -a etc
 
Old 07-02-2020, 12:41 PM   #4
Sambrad
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Quote:
Originally Posted by Sambrad View Post
The Question of what I am trying to achieve is to have a repository for the database in a directory called database permanently mounted and findable by the main software on the first Raid 1 drive where the Centos operating system resides. The database is on the Raid 5 other 4 disks and just needs to be accessible at the moment it does not show up using any directory search ls -a etc
It is no good having a Server with the data on the Main OS drives so we install the software on the first Raid and have a database on the second Raid which is on a 200GB partition (already done xfs) easily accessible and viewable The database is Postgres by the way
 
Old 07-02-2020, 12:52 PM   #5
shruggy
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Then you should select a mountpoint for your database, say /var/database and make an entry for it in /etc/fstab. Something like
Code:
/dev/sdb1 /var/database xfs defaults 0 2

Last edited by shruggy; 07-02-2020 at 12:57 PM.
 
Old 07-02-2020, 01:02 PM   #6
michaelk
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You can mount sdb1 anywhere on the "tree". The default CentOS 7.x data directory for postgresql is /var/lib/pgsql and IMHO would keep it the same location i.e just mount sdb1 at /var/lib/pgsql.

I assume that postgresql is currently installed.

Shutdown postgresql
rsync the existing data to /mnt (since it is already mounted there)
Remount sdb1 /var/lib/pgsql
Restart postgresql

The old data still exists on the / but you can go back and delete it by shutting down the server and unmounting sdb1.

It depends on what you mean by accessible and viewable. Any application would use an existing API to access the database i.e libreoffice, php, c program etc or even pg_dump. The only reason I ever directly access the /var/lib/pgsql/.. would be to change a configuration file.

Last edited by michaelk; 07-02-2020 at 01:34 PM.
 
  


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