Determining volume status and state

Volume states

A volume can be in one of the following three states, sometimes called mount states:

online--Read and write access is allowed.
offline--Read or write access is not allowed.
restricted--Some operations, such as copying volumes and parity reconstruction, are allowed, but data access is not allowed.

Volume status

A volume can have one or more of the following statuses:

Note
Although FlexVol volumes do not directly involve RAID, the state of a FlexVol volume includes the state of its containing aggregate. Thus, the states pertaining to RAID apply to FlexVol volumes as well as traditional volumes.

copying
The volume is currently the target volume of active vol copy or snapmirror operations.
degraded
The volume's containing aggregate has at least one degraded RAID group that is not being reconstructed.
flex
The volume is a FlexVol volume.
flexcache
The volume is a FlexCache volume. For more information about FlexCache volumes, see Managing FlexCache volumes.
foreign
Disks used by the volume's containing aggregate were moved to the current storage system from another storage system.
growing
Disks are in the process of being added to the volume's containing aggregate.
initializing
The volume or its containing aggregate are in the process of being initialized.
invalid
The volume does not contain a valid file system. This typically happens only after an aborted vol copy operation.
ironing
A WAFL consistency check is being performed on the volume's containing aggregate.
mirror degraded
The volume's containing aggregate is a mirrored aggregate, and one of its plexes is offline or resyncing.
mirrored
The volume's containing aggregate is mirrored and all of its RAID groups are functional.
needs check
A WAFL consistency check needs to be performed on the volume's containing aggregate.
out-of-date
The volume's containing aggregate is mirrored and needs to be resynchronized.
partial
At least one disk was found for the volume's containing aggregate, but two or more disks are missing.
raid0
The volume's containing aggregate consists of RAID-0 (no parity) RAID groups (V-Series and NetCache® systems only).
raid4
The volume's containing aggregate consists of RAID4 RAID groups.
raid_dp
The volume's containing aggregate consists of RAID-DP (Double Parity) RAID groups.
reconstruct
At least one RAID group in the volume's containing aggregate is being reconstructed.
resyncing
One of the plexes of the volume's containing mirrored aggregate is being resynchronized.
snapmirrored
The volume is in a SnapMirror relationship with another volume.
trad
The volume is a traditional volume.
unrecoverable
The volume is a FlexVol volume that has been marked unrecoverable. If a volume appears in this state, contact technical support.
verifying
A RAID mirror verification operation is currently being run on the volume's containing aggregate.
wafl inconsistent
The volume or its containing aggregate has been marked corrupted. If a volume appears in this state, contact technical support.

Determining the state and status of volumes

To determine what state a volume is in, and what status currently applies to it, complete the following step.

Step	Action
1	Enter the following command: vol status Result Data ONTAP displays a concise summary of all the volumes in the storage system. The State column displays whether the volume is online, offline, or restricted. The Status column displays the volume's RAID level, whether the volume is a FlexVol or traditional volume, and any status other than normal (such as partial or degraded). Example `> vol status` Volume State Status Options vol0 online raid4, flex root,guarantee=volume volA online raid_dp, trad mirrored Note To see a complete list of all options, including any that are off or not set for this volume, use the `-v` flag with the `vol status` command.

Step

Action

Enter the following command:

vol status

Result

Data ONTAP displays a concise summary of all the volumes in the storage system. The State column displays whether the volume is online, offline, or restricted. The Status column displays the volume's RAID level, whether the volume is a FlexVol or traditional volume, and any status other than normal (such as partial or degraded).

Example

> vol status

Volume State      Status          Options

  vol0 online     raid4, flex     root,guarantee=volume

  volA online     raid_dp, trad

                  mirrored

Note
To see a complete list of all options, including any that are off or not set for this volume, use the -v flag with the vol status command.

When to take a volume offline

You can take a volume offline and make it unavailable to the storage system. You do this for the following reasons:

To perform maintenance on the volume
To move a volume to another storage system
To destroy a volume
Note
You cannot take the root volume offline.

Taking a volume offline

To take a volume offline, complete the following step.

Step	Action
1	Enter the following command: vol offline vol_name vol_name is the name of the volume to be taken offline. Note When you take a FlexVol volume offline, it relinquishes any unused space that has been allocated for it in its containing aggregate. If this space is allocated for another volume and then you bring the volume back online, this can result in an overcommitted aggregate. For more information, see Bringing a volume online in an overcommitted aggregate.

Step

Action

Enter the following command:

vol offline vol_name

vol_name is the name of the volume to be taken offline.

Note
When you take a FlexVol volume offline, it relinquishes any unused space that has been allocated for it in its containing aggregate. If this space is allocated for another volume and then you bring the volume back online, this can result in an overcommitted aggregate.

For more information, see Bringing a volume online in an overcommitted aggregate.

When to make a volume restricted

When you make a volume restricted, it is available for only a few operations. You do this for the following reasons:

To copy a volume to another volume
For more information about volume copy, see the Data Protection Online Backup and Recovery Guide.
To perform a level-0 SnapMirror operation
For more information about SnapMirror, see the Data Protection Online Backup and Recovery Guide.

Note
When you restrict a FlexVol volume, it relinquishes any unused space that is allocated for it in its containing aggregate. If this space is allocated for another volume and then you bring the volume back online, this can result in an overcommitted aggregate.

For more information, see Bringing a volume online in an overcommitted aggregate.

Restricting a volume

To restrict a volume, complete the following step.

Step	Action
1	Enter the following command: vol restrict vol_name

Bringing a volume online

You bring a volume back online to make it available to the storage system after you deactivated that volume.

Note
If you bring a FlexVol volume online into an aggregate that does not have sufficient free space in the aggregate to fulfill the space guarantee for that volume, this command fails.

For more information, see Bringing a volume online in an overcommitted aggregate.

To bring a volume back online, complete the following step.

Step	Action
1	Enter the following command: vol online vol_name vol_name is the name of the volume to reactivate. Attention If the volume is inconsistent, the command prompts you for confirmation. If you bring an inconsistent volume online, it might suffer further file system corruption.