Creating iSCSI LUNs on vFiler units for MultiStore

Prerequisite for creating LUNs on vFiler units

MultiStore vFiler technology is supported for the iSCSI protocol only. You must purchase a MultiStore license to create vFiler units. Then you can enable the iSCSI license for each vFiler to manage LUNs (and igroups) on a per vFiler basis.

Note
SnapDrive can only connect to and manage LUNs on the hosting storage system (vfiler0), not to vFiler units.

Guidelines for creating LUNs on vFiler units

Use the following guidelines when creating LUNs on vFiler units.

The vFiler access rights are enforced when the storage system processes iSCSI host requests.
LUNs inherit vFiler ownership from the storage unit on which they are created. For example, if /vol/vfstore/vf1_0 is a qtree owned by vFiler vf1, all LUNs created in this qtree are owned by vf1.
As vFiler ownership of storage changes, so does ownership of the storage's LUNs.

LUN subcommands available on vFiler units

You can use the following LUN subcommands on vFiler LUNs:

`attribute`	`help`	`online`	`show`
`clone`	`map`	`resize`	`snap`
`comment`	`maxsize`	`serial`	`stats`
`create`	`geometry`	`set`	`unmap`
`destroy`	`move`	`setup`
df	`offline`	`share`

Note
You cannot use the lun rescan command for vFiler LUNs.

Methods for issuing LUN subcommands on vFiler units

You can issue LUN subcommands using the following methods:

From the default vFiler (vfiler0) on the hosting storage system, you can do the following:
- Enter the vfiler run * lun subcommand., which runs the lun subcommand on all vFiler units.
- Run a LUN subcommand on a specific vFiler. To access a specific vfiler, you change the vfiler context by entering the following commands:
  filer> vfiler context vfiler_name
  
  vfiler_name@filer> lun subcommand
From non-default vFiler units, you can:
- Enter the vfiler run * lun command

Creating LUNs on a vFiler

To create LUNs on a vFiler, complete the following step.

Step	Action
1	Enter the `lun create` command in the vFiler context that owns the storage, as follows: `vfiler run vfiler_name lun create -s 2g -t os_type /vol/vfstore/vf1_0/lun0` Example The following command creates a LUN on a vFiler at /vol/vfstore/vf1_0: vfiler run vf1 lun create -s 2g -t windows /vol/vfstore/vf1_0/lun0 Note If you omit the `vfiler` command and the context, an error message is displayed. Example The following command omits the `vfiler run` command and the storage context (vf1). lun create -s 2g -t windows /vol/vfstore/vf1_0/lun0 Result The following error message is displayed: lun create: Requested LUN path is inaccessible.

Step

Action

Enter the lun create command in the vFiler context that owns the storage, as follows:

vfiler run vfiler_name lun create -s 2g -t os_type /vol/vfstore/vf1_0/lun0

Example

The following command creates a LUN on a vFiler at /vol/vfstore/vf1_0:

vfiler run vf1 lun create -s 2g -t windows /vol/vfstore/vf1_0/lun0

Note
If you omit the vfiler command and the context, an error message is displayed.

Example

The following command omits the vfiler run command and the storage context (vf1).

lun create -s 2g -t windows /vol/vfstore/vf1_0/lun0

Result

The following error message is displayed:

lun create: Requested LUN path is inaccessible.

Displaying vFiler LUNs

To display LUNs owned by the vFiler context, complete the following step.

Step	Action
1	Enter the following command from the vFiler that contains the LUNs: `vfiler run * lun show` Result The following information is an example of what is displayed. ==== vfiler0 /vol/vfstore/vf0_0/vf0_lun0 2g (21437483648) (r/w, online) /vol/vfstore/vf0_0/vf0_lun1 2g (21437483648) (r/w, online) ==== vfiler1 /vol/vfstore/vf0_0/vf1_lun0 2g (21437483648) (r/w, online) /vol/vfstore/vf0_0/vf1_lun1 2g (21437483648) (r/w, online)

Step

Action

Enter the following command from the vFiler that contains the LUNs:

vfiler run * lun show

Result

The following information is an example of what is displayed.

==== vfiler0



 /vol/vfstore/vf0_0/vf0_lun0    2g   (21437483648)   (r/w, online)

 /vol/vfstore/vf0_0/vf0_lun1    2g   (21437483648)   (r/w, online)



==== vfiler1



 /vol/vfstore/vf0_0/vf1_lun0    2g   (21437483648)   (r/w, online)

 /vol/vfstore/vf0_0/vf1_lun1    2g   (21437483648)   (r/w, online)