Oracle Database Appliance – Extend /u01

Verify the actual Situation and the Disk Configuration

As ODA default /u01 space is around 100GB that is not enough as we have all oracle database related binaries on that location including ORACLE_BASE and ORACLE_HOME

Note: ODA-2HA two node, so you have to perform same on both nodes as below

Currently, extending /u01 only node1

1.                 Let’s check the current size of /u01

[root@ODA-2HA-X8~]# df -h /u01

Filesystem                         Size  Used Avail Use% Mounted on

/dev/mapper/VolGroupSys-LogVolU01   99G   43G   51G  46% /u01

 

2.        Let’s verify the physical volume for free space, we can see 7428 free physical extents are available

 

[root@ODA-2HA-X8 ~]# pvdisplay

  --- Physical volume ---

  PV Name               /dev/md126p3

  VG Name               VolGroupSys

  PV Size               <446.15 GiB / not usable 23.00 MiB

  Allocatable           yes

  PE Size               32.00 MiB

  Total PE              14276

  Free PE               7428

  Allocated PE          6848

  PV UUID               fYtdV3-N71S-HKXf-Kov2-tIk8-X0pF-TfRLzn

 

3.                 This is the actual size of the logical volume; the actual logical volume size is 100 GB.

 

[root@ODA-2HA-X8 ~]# lvdisplay /dev/mapper/VolGroupSys-LogVolU01

  --- Logical volume ---

  LV Path                /dev/VolGroupSys/LogVolU01

  LV Name                LogVolU01

  VG Name                VolGroupSys

  LV UUID                VnV8hE-I0yy-yJz4-BOgR-jo3u-nsno-yNdHh1

  LV Write Access        read/write

  LV Creation host, time localhost.localdomain, 2022-06-29 21:17:50 +0300

  LV Status              available

  # open                 1

  LV Size                100.00 GiB

  Current LE             3200

  Segments               1

  Allocation             inherit

  Read ahead sectors     auto

  - currently set to     8192

  Block device           252:39

Extend /u01

4.                Now we extend online the LVM with the lvextend command from 100 GB to 200 GB.

 

[root@ODA-2Ha-X8 ~]# lvextend --size +100G /dev/VolGroupSys/LogVolU01

 

  Size of logical volume VolGroupSys/LogVolU01 changed from 100.00 GiB (3200 extents) to 200.00 GiB (6400 extents).

  Logical volume VolGroupSys/LogVolU01 successfully resized.

 

 

[root@ODA-2HA-X8 ~]# lvdisplay /dev/mapper/VolGroupSys-LogVolU01

  --- Logical volume ---

  LV Path                /dev/VolGroupSys/LogVolU01

  LV Name                LogVolU01

  VG Name                VolGroupSys

  LV UUID                VnV8hE-I0yy-yJz4-BOgR-jo3u-nsno-yNdHh1

  LV Write Access        read/write

  LV Creation host, time localhost.localdomain, 2022-06-29 21:17:50 +0300

  LV Status              available

  # open                 1

  LV Size                200.00 GiB

  Current LE             6400

  Segments               2

  Allocation             inherit

  Read ahead sectors     auto

  - currently set to     8192

  Block device           252:39

 

5.                 Finally, the filesystem has to be resized.

[root@ODA-2HA-X8 ~]# resize2fs /dev/VolGroupSys/LogVolU01

 

resize2fs 1.42.9 (28-Dec-2013)

Filesystem at /dev/VolGroupSys/LogVolU01 is mounted on /u01; on-line resizing required

old_desc_blocks = 7, new_desc_blocks = 13

The filesystem on /dev/VolGroupSys/LogVolU01 is now 52428800 blocks long.

 

6.      Now we have 200GB space of /u01

 

 

[root@ODA-2HA-X8 ~]# df -h /u01

Filesystem                         Size  Used Avail Use% Mounted on

/dev/mapper/VolGroupSys-LogVolU01  197G   43G  146G  23% /u01

 

Summary

Resizing the /u01 on an Oracle Database Appliance is very easy and straightforward. There are no special actions required, it’s just a logical volume, no downtime required. And there is more space left on the physical volume for other resize actions.

Remove an Oracle ACFS File System and a Volume

 

Removing an Oracle ACFS File System and a Volume

To permanently remove a volume and Oracle ACFS file system, perform the following steps. These steps destroy the data in the file system.

1. Deregister the file system with acfsutil registry -d.

   For example:

   $ /sbin/acfsutil registry -d /acfsmounts/acfs1
   acfsutil registry: successfully removed ACFS mount point
      /acfsmounts/acfs1 from Oracle Registry
   

   Dismount the file system.

2. For example:

   # /bin/umount /acfsmounts/acfs1
   

   You must dismount the file system on all nodes of a cluster.

   Remove the file system with acfsutil rmfs.

3. If you were not planning to remove the volume in a later step, this step is necessary to remove the file system. Otherwise, the file system is removed when the volume is deleted.

   For example:

   $ /sbin/acfsutil rmfs /dev/asm/volume1-123

4. Optionally you can disable the volume with the ASMCMD voldisable command.

   For example:

   ASMCMD> voldisable -G data volume1
   

   Delete the volume with the ASMCMD voldelete command.

5. For example:

   ASMCMD> voldelete -G data volume1
   

   
   

Reference:

Oracle Book: Automatic Storage Management Administrator's Guide (E41058-12)