Linux volume manager (LVM)

[%=Vertica.DBMS_SHORT%] supports Linux Volume Manager (LVM) on all supported operating systems.

OpenText™ Analytics Database 25.2.x supports Linux Volume Manager (LVM) on all supported operating systems.

LVM version supported

OpenText™ Analytics Database supports LVM version 2.02.66 or later and includes device-mapper version 1.02.48 or later.

LVM configuration notes

In configuring LVM:

  • When you create logical volumes with the lvcreate command, use the readahead option to set the read ahead sector count to greater than 2048 KB.

  • You can use the default settings for all other LVM options.

LVM restrictions

The following limitations apply to LVM support:

  • You cannot have physical drives shared across several nodes.

  • OpenText™ Analytics Database supports linear logical volumes only. It does not support striped or mirrored logical volumes.

  • The database supports extending logical volumes (lvextend) but not reducing the size of a logical volume.

  • We recommend frequent backups.

  • The database does not support LVM backup and restore, such as LVM snapshot and merge. Use the OpenText™ Analytics Database backup utility vbr.

  • The database does not support LVM space reclamation because space reclamation is duplicated when reducing the size of a logical volume.

  • The database does not support LVM migration. Use Copy operations.

  • The database does not support LVM high availability. Use the high availability capabilities of the database.

  • The database does not support LVM RAID. Configure RAID at the disk controller level.