Pool Drivers

Reference of the pool drivers, their capabilities and their keywords. To choose between them, see Cluster Storage Pools.

directory

Capabilities

rox, rwx, roo, rwo

Layout

A volume object from this type of pool contains:

• a fs.directory resource, with path=<pool head>/<volume fqdn>.

Keywords

• Reference

drbd

Capabilities

rox, rwx, shared, blk, roo, rwo

Layout

A volume object from this type of pool contains:

If a vg is defined in the pool configuration,

• a fs resource, with dev=<drbd devpath>
• a drbd resource, layered over a logical volume of the pool vg
• a lv resource

If a zpool is defined in the pool configuration,

• a fs resource, with dev=<drbd devpath>
• a drbd resource, layered over a zvol of the pool zpool
• a zvol resource

If the pool configuration has neither vg nor zpool set,

• a fs resource, with dev=<drbd devpath>
• a drbd resource, layered over a logical volume
• a lv resource
• a vg resource
• a loop resource, with image file hosted in the pool defined path or in <PATHVAR>/pool/<poolname>/

Keywords

• Reference

freenas

Capabilities

roo, rwo, shared, blk, iscsi

Layout

A volume object from this type of pool contains:

• a disk.disk resource named, with name=<volume fqdn>

If the consumer has format=true (default), the volume object also contains:

• a fs.<pool fs_type> resource, with mnt=/srv/<volume fqdn>

Keywords

• Reference

loop

Capabilities

rox, rwx, roo, rwo, blk

Layout

A volume object from this type of pool contains:

• a disk.loop resource, with file=<pool head>/<volume fqdn>.img

If the consumer has format=true (default), the volume object also contains:

• a fs.<pool fs_type> resource, with mnt=/srv/<volume fqdn>

Keywords

• Reference

symmetrix

Capabilities

roo, rwo, shared, blk, fc

Layout

A volume object from this type of pool contains:

• a disk.disk resource named, with name=<volume fqdn>

If the consumer has format=true (default), the volume object also contains:

• a fs.<pool fs_type> resource, with mnt=/srv/<volume fqdn>

Keywords

• Reference

vg

Capabilities

rox, rwx, roo, rwo, blk, snap

Layout

A volume object from this type of pool contains:

• a disk.lv resource, with name=<volume fqdn>

If the consumer has format=true (default), the volume object also contains:

• a fs.<pool fs_type> resource, with mnt=/srv/<volume fqdn>

Keywords

• Reference

share

Capabilities

rox, rwx, roo, rwo, shared

Layout

A volume object from this type of pool contains:

• a fs.directory resource, with path=<pool head>/<volume fqdn>.

Keywords

• Reference

zpool

Capabilities

rox, rwx, roo, rwo, blk, snap

Layout

A volume object from this type of pool contains:

• a fs.zfs resource, with name=<pool>/<volume fqdn> and mnt=/srv/<volume fqdn>.

Keywords

• Reference

Virtual Pool Driver

A virtual pool allow administrators to create complex layouts based on volumes from other pools.

A typical use-case in a virtual pool allocating volumes mirrored over two other volumes allocated from arrays on two different sites.

A virtual pool volume is created from a template volume object the administrator can design at wish to meet its specific needs.

Capabilities

Capabilities are user defined.

Keywords

• Reference