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package IBM::V7000Unified;

use strict;
use warnings;

use IBM::StorageSystem;
use Carp qw(croak);

our $VERSION = '0.20';

our @METHODS=qw(array disk drive enclosure export fabric filesystem health 
host interface iogroup mount node quota service snapshot task vdisk);

our @ATTRS = qw(auth_service_cert_set auth_service_configured 
auth_service_enabled auth_service_pwd_set auth_service_type auth_service_url 
auth_service_user_name bandwidth cluster_isns_IP_address cluster_locale 
cluster_ntp_IP_address code_level console_IP email_contact email_contact2 
email_contact2_alternate email_contact2_primary email_contact_alternate 
email_contact_location email_contact_primary email_reply email_state 
gm_inter_cluster_delay_simulation gm_intra_cluster_delay_simulation 
gm_link_tolerance gm_max_host_delay has_nas_key id id_alias 
inventory_mail_interval iscsi_auth_method iscsi_chap_secret layer location 
name partnership rc_buffer_size relationship_bandwidth_limit 
space_allocated_to_vdisks space_in_mdisk_grps statistics_frequency 
statistics_status stats_threshold tier tier_capacity tier_free_capacity 
time_zone total_allocated_extent_capacity total_free_space total_mdisk_capacity
total_overallocation total_used_capacity total_vdisk_capacity 
total_vdiskcopy_capacity compression_cpu_pc cpu_pc drive_r_io drive_r_mb 
drive_r_ms drive_w_io drive_w_mb drive_w_ms fc_io fc_mb iscsi_io iscsi_mb 
mdisk_r_io mdisk_r_mb mdisk_r_ms mdisk_w_io mdisk_w_mb mdisk_w_ms sas_io sas_mb
total_cache_pc vdisk_r_io vdisk_r_mb vdisk_r_ms vdisk_w_io vdisk_w_mb 
vdisk_w_ms write_cache_pc cluster_throughput cluster_client_throughput 
cluster_create_delete_latency cluster_create_delete_operations 
cluster_open_close_latency cluster_open_close_operations 
cluster_read_write_operations cluster_read_write_latency);

foreach my $method ( @METHODS ) {
	{
		no strict 'refs';
		my $get_method	= "get_$method";
		my $get_methods	= "get_${method}s";
	
		*{ __PACKAGE__ ."::$method" } = sub {
			my $self = shift;
			$self->{ss}->$method(@_)
		};

		*{ __PACKAGE__ ."::$get_method" } = sub {
			my $self = shift;
			$self->{ss}->$get_method(@_)
		};

		*{ __PACKAGE__ ."::$get_methods" } = sub {
			my $self = shift;
			$self->{ss}->$get_methods(@_)
		}
	}
}

foreach my $attr ( @ATTRS ) {
	{
		no strict 'refs';
	
		*{ __PACKAGE__ ."::$attr" } = sub {
			my $self = shift;
			$self->{ss}->$attr(@_)
		};
	}
}

sub new {
        my ( $class, %args ) = @_;

        my $self = bless {} , $class;
        my %opts = (	user        => $self->{user}, 
			key_path    => $self->{key_path},
			batch_mode  => 1, 
			master_opts => '-q' 
		);

        $self->{ss} = IBM::StorageSystem->new( %args );

        return $self
}


1;

__END__

=head1 NAME

IBM::V7000Unified - Perl API to IBM V7000 Unified CLI

=head1 VERSION

Version 0.02

=head1 SYNOPSIS

IBM::V7000Unified is a Perl API to IBM V7000 Unified CLI.

=head1 METHODS

=head3 new 

        my $ibm = IBM::V7000Unified->new(
				user     => 'admin',
				host     => 'my-v7000-unified.company.com',
				key_path => '/path/to/my/.ssh/private_key'
			) or die "Couldn't create object! $!\n";

Constructor - creates a new IBM::V7000Unified object.  This method accepts 
three mandatory parameters and one optional parameter, the three mandatory 
parameters are:

=over 3

=item user

The username of the user with which to connect to the device.

=item host

The hostname or IP address of the device to which we are connecting.

=item key_path

Either a relative or fully qualified path to the private ssh key valid for the
user name and device to which we are connecting.  Please note that the 
executing user must have read permission to this key.

=back

The optional parameter is:

=over 3

=item stats_threshold

The period in seconds for which retrieved system statistics will be considered 
fresh, after which they will be re-retrieved.  If not set, the default value 
of this parameter is zero meaning that the statistics are not refreshed unless 
done explicitly via the B<refresh> method of an 
L<IBM:StorageSystem::Statistic> object.

=back

=head3 auth_service_cert_set

Specifies if the authentication service certificate has been set.

=head3 auth_service_configured

True if the auth_service_type is configured and either one of the following 
is true:

=over 3

=item * The auth_service_type is LDAP-only (if at least one LDAP server is configured)

=item * The auth_service_type is TIP-only:

=over 5

=item * The name, password, and URL are established

=item * An SSL certificate is created (if an HTTPS URL is available)

=back

=back

=head3 auth_service_enabled

True if auth_service_type is configured.

=head3 auth_service_pwd_set

Specifies if the authentication password has been set.

=head3 auth_service_type

returns the authentication services type, either; Tivoli Integrated Portal 
(TIP) or Native Lightweight Directory Access Protocol (LDAP)

=head3 auth_service_url

Returns the authentication services URL.

=head3 auth_service_user_name

Returns the user name used for authentication services.

=head3 bandwidth

Returns the bandwidth available on the intersystem link for background copy, 
in megabytes per second (MBps).

=head3 cluster_isns_IP_address

Returns the cluster ISNS IP address.

=head3 cluster_locale

Returns the cluster configured locale.

=head3 cluster_ntp_IP_address

Returns the cluster NTP service address.

=head3 code_level

Returns the cluster code level.

=head3 console_IP

Returns the cluster console IP address.

=head3 email_contact

Returns the clusters email contact information - this value is usually the 
system name.

=head3 email_contact2

Returns the clusters extended email contact information.

=head3 email_contact2_alternate

Returns the clusters extended alternate email contact information.

=head3 email_contact2_primary

Returns the clusters extended primary email contact information.

=head3 email_contact_alternate

Returns the clusters email contact alternate information.

=head3 email_contact_location

Returns the clusters email contact location.

=head3 email_contact_primary

Returns the clusters email contact phone number.

=head3 email_reply

Returns the clusters email reply email.

=head3 email_state

Returns the clusters email operational state.

=head3 gm_inter_cluster_delay_simulation

Returns the cluster gm inter cluster delay simulation.

=head3 gm_intra_cluster_delay_simulation

Returns the cluster gm intra cluster delay simulation.

=head3 gm_link_tolerance

Returns the cluster gm link delay tolerance in seconds.

=head3 gm_max_host_delay

Returns the cluster gm maximum host delay value.

=head3 has_nas_key

Specifies if the cluster has a NAS key configured.

=head3 id

Returns the cluster ID.

=head3 id_alias

Returns the cluster ID alias.

=head3 inventory_mail_interval

Returns the cluster inventory mail interval period in days.

=head3 iscsi_auth_method

Returns the cluster iSCSI authentication method.

=head3 iscsi_chap_secret

Returns the iSCSI CHAP secret.

=head3 layer

Returns the cluster layer type; either replication or storage (default).
Replication means the system can create partnerships with Storwize 
StorageSystem Unified. Storage means the system can present storage to 
Storwize StorageSystem Unified.

=head3 location

Returns the cluster location type, either local or remote.

=head3 name

Returns the cluster name.

=head3 partnership

Returns the cluster partnership type, either one of; fully_configured, 
partially_configured_local, partially_configured_local_stopped, not_present, 
fully_configured_stopped, fully_configured_remote_stopped, 
fully_configured_local_excluded, fully_configured_remote_excluded or 
fully_configured_exceeded

=head3 rc_buffer_size

Returns the cluster resource buffer size assigned for Metro Mirror or Global 
Mirrored Copy Services.

=head3 relationship_bandwidth_limit

Returns the cluster relationship bandwidth limit in megabytes per second (MBps).

=head3 space_allocated_to_vdisks

Returns the space allocated to VDisks - this may be in a variable notation 
format.

=head3 space_in_mdisk_grps

Returns the space allocated to MDisk groups - this may be in a variable 
notation format.

=head3 statistics_frequency

Returns the statistics collection frequency interval.

=head3 statistics_status

Returns the statistics collection status.

=head3 tier

Returns an array containing the supported tier types for the cluster.

B<Note> that this method returns an array of the available tier types and that 
the ordering of these types is preserved from the CLI output.  The ordering of 
these types can be used to retrieve the tier capacity of each tier type with 
the B<tier_capacity> command.

=head3 tier_capacity

Returns the total tier capacity for each tier type in the cluster.

B<Note> that this method returns an array of tier capacity ivalues, the index 
of which corresponds with the array indexes of tier types as returned by the 
B<tier> method.

For example, to print each tier type and the corresponding tier capacity for 
this cluster:

        for ( my $i = 0; $i < scalar @{ $ibm->tier } ; $i++ ) {
                print "Tier: " . $ibm->tier->[$i] 
			. " - Capacity: " . $ibm->tier_capacity->[$i] . "\n"
        }

=head3 tier_free_capacity

Returns the free tier capacity for each tier type in the cluster.

B<Note> that like the B<tier> and B<tier_capacity> methods, this method also 
returns an array of tier free capacity values, the order of which corresponds 
with the arrays returned by the aforementioned methods.

=head3 time_zone

Returns the cluster time zone.

=head3 total_allocated_extent_capacity

Returns the clusters total allocated capacity - this may be in a variable 
notation format.

=head3 total_free_space

Returns the clusters total free space - this may be in a variable notation 
format.

=head3 total_mdisk_capacity

Returns the clusters total MDisk capacity - this may be in a variable notation 
format.

=head3 total_overallocation

Returns the cluster total overallocation limit.

=head3 total_used_capacity

Returns the clusters total used capacity - this may be in a variable notation 
format.

=head3 total_vdisk_capacity

Returns the clusters total VDisk capacity - this may be in a variable notation 
format.

=head3 total_vdiskcopy_capacity

Returns the clusters total VDisk copy capacity - this may be in a variable 
notation format.

=head3 compression_cpu_pc

Returns an L<IBM::StorageSystem::Statistic> object for allocated CPU capacity 
utilised for compression.

=head3 cpu_pc

Returns an L<IBM::StorageSystem::Statistic> object for allocated CPU capacity 
utilised for the system.

=head3 drive_r_io

Returns an L<IBM::StorageSystem::Statistic> object the average amount of I/O 
operations transferred per second for read operations to drives during the 
sample period.

=head3 drive_r_mb

Returns an L<IBM::StorageSystem::Statistic> object for the average number of megabytes transferred 
per second for read operations to drives during the sample period.

=head3 drive_r_ms

Returns an L<IBM::StorageSystem::Statistic> object for the average amount of time in milliseconds 
that the system takes to respond to read requests to drives over the sample period.

=head3 drive_w_io

Returns an L<IBM::StorageSystem::Statistic> object the average amount of I/O operations transferred 
per second for write operations to drives during the sample period.

=head3 drive_w_mb

Returns an L<IBM::StorageSystem::Statistic> object for the average number of megabytes transferred 
per second for write operations to drives during the sample period.

=head3 drive_w_ms

Returns an L<IBM::StorageSystem::Statistic> object for the average amount of time in milliseconds 
that the system takes to respond to write requests to drives over the sample period.

=head3 fc_io

Returns an L<IBM::StorageSystem::Statistic> object for the total input/output (I/O) operations 
transferred per seconds for Fibre Channel traffic on the system. This value includes 
host I/O and any bandwidth that is used for communication within the system.

=head3 fc_mb

Returns an L<IBM::StorageSystem::Statistic> object for the total number of megabytes transferred 
per second for Fibre Channel traffic on the system. This value includes host I/O and any 
bandwidth that is used for communication within the system.

=head3 iscsi_io

Returns an L<IBM::StorageSystem::Statistic> object for the total I/O operations transferred 
per second for iSCSI traffic on the system.

=head3 iscsi_mb

Returns an L<IBM::StorageSystem::Statistic> object for the total number of megabytes 
transferred per second for iSCSI traffic on the system.

=head3 mdisk_r_io

Returns an L<IBM::StorageSystem::Statistic> object for the average amount of I/O operations 
transferred per second for read operations to MDisks during the sample period.

=head3 mdisk_r_mb

Returns an L<IBM::StorageSystem::Statistic> object for the average number of megabytes transferred 
per second for read operations to MDisks during the sample period.

=head3 mdisk_r_ms

Returns an L<IBM::StorageSystem::Statistic> object for the average amount of time in milliseconds 
that the system takes to respond to read requests to MDisks over the sample period.

=head3 mdisk_w_io

Returns an L<IBM::StorageSystem::Statistic> object for the average amount of I/O operations 
transferred per second for write operations to MDisks during the sample period.

=head3 mdisk_w_mb

Returns an L<IBM::StorageSystem::Statistic> object for the average number of megabytes transferred 
per second for write operations to MDisks during the sample period.

=head3 mdisk_w_ms

Returns an L<IBM::StorageSystem::Statistic> object for the average amount of time in milliseconds 
that the system takes to respond to write requests to MDisks over the sample period.

=head3 sas_io

Returns an L<IBM::StorageSystem::Statistic> object for the total I/O operations transferred per 
second for SAS traffic on the system. This value includes host I/O and bandwidth that 
is used for background RAID activity.

=head3 sas_mb

Returns an L<IBM::StorageSystem::Statistic> object for the total number of megabytes 
transferred per second for iSCSI traffic on the system.

=head3 total_cache_pc

Returns an L<IBM::StorageSystem::Statistic> object for the total percentage for both the 
write and read cache usage for the node.

=head3 vdisk_r_io

Returns an L<IBM::StorageSystem::Statistic> object for the average amount of I/O operations 
transferred per second for read operations to volumes during the sample period.

=head3 vdisk_r_mb

Returns an L<IBM::StorageSystem::Statistic> object for the average number of megabytes 
transferred per second for read operations to MDisks during the sample period.

=head3 vdisk_r_ms

Returns an L<IBM::StorageSystem::Statistic> object for the average amount of time in 
milliseconds that the system takes to respond to read requests to MDisks over the 
sample period.

=head3 vdisk_w_io

Returns an L<IBM::StorageSystem::Statistic> object for the average amount of I/O operations 
transferred per second for read operations to drives during the sample period. 

=head3 vdisk_w_mb

Returns an L<IBM::StorageSystem::Statistic> object for the average number of megabytes transferred 
per second for read operations to drives during the sample period

=head3 vdisk_w_ms

Returns an L<IBM::StorageSystem::Statistic> object for the average amount of time in milliseconds 
that the system takes to respond to read requests to MDisks over the sample period.

=head3 write_cache_pc

Returns an L<IBM::StorageSystem::Statistic> object for the percentage of the write cache usage 
for the node.

=head3 refresh_system_stats

This method refreshes all system statistics with updated values from the system.  This
method may be handy if instantiate an IBM::StorageSystem object within a long running or non-exiting 
process and wish to either periodically retrieve updated system statistics.

B<Note> that you can call B<refresh> on individual system statistics which may have a slight
performance increase over this method.

=head3 stats_threshold

This method allows you specify the statistics threshold freshness interval in seconds. This
interval is used to determine if the value sreturned by a statistics method are fresh or
whether they should be refreshed from the atregt system.

By default this value is zero, meaning that the statistics are never refreshed unless explicitly
done so by calling the B<reefresh> method of the statistic object.  This may result in a
performance increase in situations where statistic methods are frequently used, and may also
result in more consistent reporting of the target system state as the statistic values will more
closely represent a single point in time overview of the system rather than a series of 
consecutive snapshots.

In situation where you may want to gather a set of statistical values for the target system over
a finite period, you could set the threshold value low, and reset it afterwards. e.g.

	# Print the current FC IOPS value every two seconds for a minute
	$ibm->stats_threshold = 1;
	for ( 1 .. 30 ) {
		print $ibm->fc_io_current;
		sleep 2
	}
	# Disable automatic refreshing
	$ibm->stats_threshold = 0;

=head3 cluster_throughput ( $interval )

Returns either a single, or list, of L<IBM::StorageSystem::StatisticsSet> objects containing 
L<IBM::StorageSystem::Statistics::ClusterThroughput> performance data on bytes read and written
acorss all nodes and all GPFS filesystems in the cluster.

The method accepts a single optional parameter; the time period for which to return the data.
The allowed values for this parameter are one of; minute, hour, day, week, month, quarter and year.
If omitted, this parameter will default to minute.

=head3 cluster_client_throughput ( $interval )

Returns either a single, or list, of L<IBM::StorageSystem::StatisticsSet> objects containing 
L<IBM::StorageSystem::Statistics::ClusterClientThroughput> performance data on client throughput across 
all nodes in the target cluster.

The method accepts a single optional parameter; the time period for which to return the data.
The allowed values for this parameter are one of; minute, hour, day, week, month, quarter and year.
If omitted, this parameter will default to minute.

=head3 cluster_create_delete_latency ( $interval )

Returns either a single, or list, of L<IBM::StorageSystem::StatisticsSet> objects containing 
L<IBM::StorageSystem::Statistics::ClusterCreateDeleteLatency> performance data on cluster file creation
and deletion latency across all nodes in the target cluster.

The method accepts a single optional parameter; the time period for which to return the data.
The allowed values for this parameter are one of; minute, hour, day, week, month, quarter and year.
If omitted, this parameter will default to minute.

=head3 cluster_create_delete_operations ( $interval )

Returns either a single, or list, of L<IBM::StorageSystem::StatisticsSet> objects containing 
L<IBM::StorageSystem::Statistics::ClusterCreateDeleteOperations> performance data on cluster file creation
and deletion operations across all nodes in the target cluster.

The method accepts a single optional parameter; the time period for which to return the data.
The allowed values for this parameter are one of; minute, hour, day, week, month, quarter and year.
If omitted, this parameter will default to minute.

=head3 cluster_open_close_latency ( $interval )

Returns either a single, or list, of L<IBM::StorageSystem::StatisticsSet> objects containing 
L<IBM::StorageSystem::Statistics::ClusterOpenCloseLatency> performance data on cluster file open
and close latency across all nodes in the target cluster.

The method accepts a single optional parameter; the time period for which to return the data.
The allowed values for this parameter are one of; minute, hour, day, week, month, quarter and year.
If omitted, this parameter will default to minute.

=head3 cluster_open_close_operations ( $interval )

Returns either a single, or list, of L<IBM::StorageSystem::StatisticsSet> objects containing 
L<IBM::StorageSystem::Statistics::ClusterCreateDeleteOperations> performance data on cluster file open
and close operations across all nodes in the target cluster.

The method accepts a single optional parameter; the time period for which to return the data.
The allowed values for this parameter are one of; minute, hour, day, week, month, quarter and year.
If omitted, this parameter will default to minute.

=head3 cluster_read_write_latency ( $interval )

Returns either a single, or list, of L<IBM::StorageSystem::StatisticsSet> objects containing 
L<IBM::StorageSystem::Statistics::ClusterReadWriteLatency> performance data on cluster file read
and write latency across all nodes in the target cluster.

The method accepts a single optional parameter; the time period for which to return the data.
The allowed values for this parameter are one of; minute, hour, day, week, month, quarter and year.
If omitted, this parameter will default to minute.

=head3 cluster_read_write_operations ( $interval )

Returns either a single, or list, of L<IBM::StorageSystem::StatisticsSet> objects containing 
L<IBM::StorageSystem::Statistics::ClusterReadWriteOperations> performance data on cluster file read
and write operations across all nodes in the target cluster.

The method accepts a single optional parameter; the time period for which to return the data.
The allowed values for this parameter are one of; minute, hour, day, week, month, quarter and year.
If omitted, this parameter will default to minute.

=head3 array( $id )

        # Print the capacity and RAID level of array 1 in GB
        my $array = $ibm->array( 1 );
        print "Array 1 capacity: " . int ( $array->capacity / ( 1024 ** 3 ) )
                . " (" . $array->raid_level . ")\n"

        # e.g. Array 1 capacity: 5824G (raid10)

Returns an L<IBM::StorageSystem::Array> object representing the array specified by the numerical
id parameter.

B<Note> that this is a caching method and that a previously retrieved L<IBM::StorageSystem::Array> object will
be returned if one has been cached from previous invocations.

=head3 get_array( $id )

Returns the array specified by the value of the numerical ID argument as an L<IBM::StorageSystem:Array> object.

B<Note> that this method is non-caching and the array information will always be retrieved from the StorageSystem
system even if a cached object exists.

=head3 get_arrays

        # Print the array status of all arrays in our system
        map { print "Array ", $_->mdisk_id, " status ", $_->status, "\n" } $ibm->get_arrays;

Returns an array of L<IBM::StorageSystem::Array> objects representing all arrays in the target system.

=head3 disk ( $id ) 

        # Get the disk named "system_vol_00" as an IBM::StorageSystem::Disk object
        my $disk = $ibm->disk(system_vol_00);
        
        # Print the disk status
        print $disk->status;

        # Alternately
        print $ibm->disk(system_vol_00)->status;

Returns a L<IBM::StorageSystem::Disk> object representing the disk specified by the value of the id parameter, 
which should be a valid disk name in the target system.

=head3 get_disk( $id )

This is a functionally equivalent non-caching implementation of the B<disk> method.

=head3 get_disks

        # Print a listing of all disks in the target system including their name, the assigned pool and status

        printf( "%-20s%-20s%-20s\n", "Name", "Pool", "Status" );
        printf( "%-20s%-20s%-20s\n", "-----", "------", "-------" );
        foreach my $disk ( $ibm->get_disks ) { printf( "%-20s%-20s%-20s\n", $disk->name, $disk->pool, $disk->status ) }

        # Prints something like:
        #
        # Name                Pool                Status              
        # -----               ------              -------             
        # silver_vol_00       silver              ready               
        # silver_vol_01       silver              ready               
        # silver_vol_02       silver              ready    
        # ... etc.

Returns an array of L<IBM::StorageSystem::Disk> objects representing all disks in the target system.

=head3 drive ( $id ) 

        # Get drive ID 2 as an IBM::StorageSystem::Drive object
        my $drive = $ibm->drive( 2 );

        # Print the drive capacity in bytes
        print $drive->capacity;

        # Alternately;
        print $ibm->drive( 2 )->capacity;

        # Print the drive vendor and product IDs
        print "Vendor ID: ", $drive->vendor_id, " - Product ID: ", $drive->product_id, "\n";

Returns the drive specified by the value of the integer argument as a L<IBM::StorageSystem::Drive> object.

B<note> that this method implements caching and that a cached object will be retrieved if present.

If you require a non-cached object, then use the B<get_drive> method instead.

=head3 get_drive( $id )

Returns the drive specified by the value of the integer argument.  This method is non-caching and
always retrieves information directly from the target system even if a cached object is present.

=head3 get_drives( $id )

        # Print the SAS port status and drive status for all drives in a nicely formatted list
        printf("%-20s%-20s%-20s%-20s\n", 'Drive', 'SAS Port 1 Status', 'SAS Port 2 Status', 'Status');
        printf("%-20s%-20s%-20s%-20s\n", '-'x18, '-'x18, '-'x18, '-'x18);
        map { printf( "%-20s%-20s%-20s%-20s\n", $_->id, $_->port_1_status, $_->port_2_status, $_->status) } $ibm->get_drives;

        # e.g.
        # Drive               SAS Port 1 Status   SAS Port 2 Status   Status              
        # ------------------  ------------------  ------------------  ------------------  
        # 0                   online              online              online              
        # 1                   online              online              online              
        # 2                   online              online              online              
        # 3                   online              online              online
        # ...

Returns all drives as an array of L<IBM::StorageSystem::Drive> objects.

=head3 enclosure( $id )

        # Print the status of a specific enclosure
        print "Enclosure two status is " . $ibm->enclosure(2)->status . "\n";

        # Get all PSUs in an enclosure as L<IBM::StorageSystem::Enclosure::PSU> objects.
        my @psus = $ibm->enclosure(1)->psus;

Returns the enclosure specified by the numerical identifer of the id parameter as an 
L<IBM::StorageSystem::Enclosure> object.

B<Note> that this is a caching method and that a cached object will be returned if one is present.
If you require a non-cached result, then please use the B<get_enclosure> method.

=head3 get_enclosure( $id )

This method is a functionally equivalent non-caching implementation of the B<enclosure> method.

=head3 get_enclosures

        # Print the status of each enclosure in our system.
        foreach my $enclosure ( $ibm->get_enclosures ) {
                print "Enclosure ", $enclosure->id, " status: ", $enclosure->status, "\n"
        }

Returns an array of L<IBM::StorageSystem::Enclosure> objects representing all enclosures present in teh target
system.

=head3 get_exports

        # Print a listing of all configured exports containing the export name, the export path,
        # the export protocol and the export status.

        printf( "%-20s%-40s%-10s%-10s\n", 'Name', 'Path', 'Protocol', 'Active' );

        foreach my $export ( $ibm->get_exports ) { 
                print '-'x100,"\n";
                printf( "%-20s%-40s%-10s%-10s\n", $export->name, $export->path, $export->protocol, $export->active )
        }

        # Prints something like:
        #
        #Name                Path                                    Protocol  Active    
        # ----------------------------------------------------------------------------------------------------
        # homes_root          /ibm/fs1/homes                          NFS       true      
        # ----------------------------------------------------------------------------------------------------
        # shares_root         /ibm/fs1/shares                         NFS       true      
        # ----------------------------------------------------------------------------------------------------
        # test                /ibm/fs1/test                           CIFS      true      
        # ----------------------------------------------------------------------------------------------------
        # ... etc.

Returns all configured exports on the target system as an array of L<IBM::StorageSystem::Export> objects.

=head3 get_fabrics

        # Print a list of our fabrics (sorted by fabric ID) including the fabric ID, node ID, port ID,
        # local WWPN, remote WWPN and fabric status.

        printf( "%-5s%-8s%-8s%-20s%-20s%-10s\n", 'ID', 'Node', 'Port', 'Local WWPN', 'Remote WWPN', 'Status');
        print '-'x80,"\n";

        for my $fabric ( map { $_->[0] } sort { $a->[1] cmp $b->[1] } map { [$_, $_->id] } $ibm->get_fabrics ) {
                printf( "%-5s%-8s%-8s%-20s%-20s%-10s\n", $fabric->id, $fabric->node_name, $fabric->local_port,
                        $fabric->local_wwpn, $fabric->remote_wwpn, $fabric->state )
        }

        # Prints something like:
        #
        # ID   Node    Port    Local WWPN          Remote WWPN         Status    
        # --------------------------------------------------------------------------------
        # 1    node1   1       5005076802159D73    21000024FF43DE7B    active    
        # 1    node1   2       5005076802259D73    21000024FF35B8FC    active    
        # 2    node2   1       5005076802159D74    21000024FF43DE7A    active    
        # 2    node2   2       5005076802259D74    21000024FF35B8FD    active 

Returns all configured fabrics on the target system as an array of L<IBM::StorageSystem::Fabric> objects.

=head3 filesystem( $filesystem_name )

        # Print the block size of file system 'fs1'
        print $ibm->filesystem(fs1)->block_size;
        
        # Get the file system 'fs2' as a IBM::StorageSystem::FileSystem object
        my $fs = $ibm->filesystem(fs2);

        # Print the mount point of this file system
        print "fs2 mount point: " . $fs->mount_point . "\n";

        # Call a function if inode usage on file system 'fs2' exceeds 90% of maximum allocation.
        monitoring_alert( 'Inode allocation > 90% on '.$filesystem->device_name ) 
                if ( ( ( $fs->inodes / $fs->max_inodes ) * 100 ) > 90 );

Returns the file system specified by the value of the named parameter as a L<IBM::StorageSystem::FileSystem> object.

Note that this is a caching method and a cached object will be retrieved if one exists,  If you require a
non-cached object, then please use the B<get_filesystem> method.

=head3 get_filesystem( $filesystem_name )

This is a non-caching functionally equivalent implementation of the B<filesystem> method.  Use this method if
you require the file system information to be retrieved directly from the target system rather than cache.

=head3 get_filesystems

        # Do the same for all file systems
        map { monitoring_alert( 'Inode allocation > 90% on '.$_->device_name )
                if ( ( ( $fs->inodes / $fs->max_inodes ) * 100 ) > 90 ) } $ibm->get_filesystems;

Returns an array of L<IBM::StorageSystem:FileSystem> objects representing all configured file systems on the
target system.

=head3 get_healths

        # Simple one-liner to print the sensor status and value for any error conditions.
        map { print join ' -> ', ( $_->sensor, $_->value."\n" ) } 
                grep { $_->status =~ /ERROR/ } $ibm->get_healths;

        # e.g.
        # CLUSTER -> Alert found in component cluster
        # MDISK -> Alert found in component mdisk
        # NODE -> Alert found in component node

Returns an array of L<IBM::StorageSystem::Health> objects representative of all health sensors on the target system.

B<Note> that this method is only implemented on StorageSystem Unified systems and not StorageSystem SONAS systems.

=head3 host( $hostname )

        # Print the host status of the attached host 'sauron'
        print "Status: " . $ibm->host(sauron)->status . "\n";

Returns the host specified by the value of the named host parameter as an L<IBM::StorageSystem::Host> object.

B<Note> that this is a caching method and a cached object will be returned if one exists.  If you require
a non-cached object, then please use the B<get_host> method.

=head3 get_host( $hostname )

This is a functionally equivalent non-caching implementation of the B<host> method.

=head3 get_hosts

        # Print a list of all configured hosts sorted by hostname, their WWPNs,
        # port state and login status.

        foreach $host ( map { $_->[0] } sort { $a->[1] cmp $b->[1] } map { [ $_, $_->name ] } $ibm->get_hosts ) { 
                my $c = 0;

                foreach $wwpn ( @{ $host->WWPN } ) { 
                        print ( $c ? "\t" : ('-'x100)."\n".$host->name );
                        print "\t\t\t$wwpn\t" . @{ $host->state }[$c] . "\t\t" .
                                ( @{$host->node_logged_in_count }[$c] ? '' : 'not ' ) . "logged in\n";
                        $c++
                }   
        }

        # Prints something similar to:
        # ----------------------------------------------------------------------------------------------------
        # host-3                        2101001B32A3D94C        active          logged in
        #                               2100001B3283D94C        active          logged in
        # ----------------------------------------------------------------------------------------------------
        # host-4                        2100001B320786E7        active          logged in
        #                               2101001B322786E7        active          logged in
        # ----------------------------------------------------------------------------------------------------
        # storage-2                     210100E08BB40A08        offline         not logged in
        #                               210000E08B940A08        offline         not logged in
        # ... etc.

Returns an array of L<IBM::StorageSystem::Host> objects representing all host attached to the target system.

=head3 interface ( $id )

        # Get interface ethX0 on management node mgmt001st001 as an IBM::StorageSystem::Interface object
        # Print the interface status
        print $interface->up_or_down;

        # Print the interface status
        print $interface->speed;

        # Alternately;
        print $ibm->interface('mgmt001st001:ethX0')->speed;

Returns the interface identified by the value of the id parameter as an L<IBM::StorageSystem::Interface> object.

The value of the id parameter must be a valid node and interface name separated by a colon.

B<Note> that this method implements caching and a cached object will be returned shoudl one be present.
If you require a non-cached object then please use the B<get_iogroup> method.

=head3 get_interface( $id )

This is a functionally equivalent non-caching implementation of the B<interface> method.

=head3 get_interfaces

        # Print a list of all interfaces, their status, speed and role
        
        foreach my $interface ( $ibm->get_interfaces ) {
                print "Interface: " . $interface->interface . "\n";
                print "\tStatus: " . $interface->up_or_down . "\n";
                print "\tSpeed: " . $interface->speed . "\n";
                print "\tRole: " . $interface->isubordinate_or_master . "\n----------\n";
        }
        
Returns an array of L<IBM::StorageSystem::Interface> objects representing all interfaces on the target system.

=head3 iogroup( $id )

        # Get I/O group 0
        my $io_group = $ibm->get_iogroup(0);

        # Print the I/O group maintenance state
        print $io_group->maintenance_state;

        # Alternately:
        print $ibm->iogroup(0)->maintenance_state;

Returns the I/O group identified by the value of the numerical ID parameter as an L<IBM::StorageSystem::IOGroup>
object.

B<Note> that this method implements caching and a cached object will be returned shoudl one be present.
If you require a non-cached object then please use the B<get_iogroup> method.

=head3 get_iogroup( $id )

This is a functionally equivalent non-caching implementation of the B<iogroup> method.

=head3 get_iogroups

        # Print a formatted listing of all I/O groups by ID and name, along with
        # their VDisk count, host count, node count and maintenance state.
        map { printf("%-8s%-20s%-20s%-20s%-20s%-20s\n", 
                $_->id,
                $_->name,
                $_->vdisk_count,
                $_->host_count,
                $_->node_count,
                $_->maintenance )
        } $ibm->get_iogroups;

        # Prints something like:
        #
        # ID      Name                VDisk Count         Host Count          Node Count          Maintenance         
        # 0       io_grp0             2                   3                   2                   no                  
        # 1       io_grp1             0                   3                   0                   no                  
        # 2       io_grp2             0                   3                   0                   no                  
        # 3       io_grp3             0                   3                   0                   no
        # ... etc.

Returns an array of L<IBM::StorageSystem::IOGroup> objects representing all configured I/O groups on the target system.

=head3 mount( $mount )

        # Print mount status of file system fs1
        print "Mount status: " . $ibm->mount(fs1) . "\n";

        # Print only those file system that are not mounted
        map { print $_->file_system . " is not mounted.\n" }
        grep { $_->mount_status ne 'mounted' }
        $ibm->get_mounts;

Returns the mount identified by the mount parameter as a L<IBM::StorageSystem::Mount> object.

B<Note> that this method implements caching and a cached object will be returned shoudl one be present.
If you require a non-cached object then please use the B<get_iogroup> method.

=head3 get_mount( $mount )

This is a functionally equivalent non-caching implementation of the B<mount> method.

=head3 get_mounts

This method returns an array of L<IBM::StorageSystem::Mount> objects representing all mounts on the target system.

=head3 node( $node )

        # Get node mgmt001st001 as an IBM::StorageSystem::Node object
        my $node = $ibm->node( mgmt001st001 );
        
        # Print the node description
        print "Description: " . $node->description . "\n";

        # Prints something like: "Description: active management node"
        # Or alternately;
        print "Description: " . $ibm->node( mgmt001st001 )->description . "\n";


Returns the node identified by the value of the node parameter as a L<IBM::StorageSystem::Node> object.

B<Note> that this method implements caching and that a cached object will be returned if one is available.
If you require a non-cached object, then please use the non-caching B<get_node> method.

=head3 get_node( $node )

This is a functionally equivalent non-caching implementation of the B<node> method.

=head3 get_nodes

        # Print the GPFS and CTDB stati of all nodes
        foreach my $node ( $ibm->get_nodes ) {
                print "GPFS status: " . $node->GPFS_status . " - CTDB status: " . $node->CTDB_status . "\n"
        }

Returns an array of L<IBM::StorageSystem::Node> objects representing all configured nodes on the target system.

=head3 get_quotas 

        # Call a function to send a quota warning email for any quotas where the current
        # usage exceeds 85% of the quota usage hard limit.

        map  { send_quota_warning_email( $_ ) }
        grep { ( $_->used_usage / $_->HL_usage ) > 0.85 }
        grep { $_->name ne 'root' }
        grep { $_->type eq 'U' } $ibm->get_quotas;

Returns all quotas defined on the target system as an array of L<IBM::StorageSystem::Quota> objects.

=head3 service( $service )

        # Print the enabled status of the NFS service
        print $ibm->service(NFS)->enabled;

        # Print the configured and enabled status of all services
        printf( "%-20s%-20s%-20s\n", 'Service', 'Configured', 'Active' );
        map { printf( "%-20s%-20s%-20s\n", $_->name, $_->configured, $_->active ) } $ibm->get_services;

Returns a L<IBM::StorageSystem::Service> object representing the service identified by the value of the
service parameter.

B<Note> that this method implements caching and that a cached object will be returned if one is available.
If you require a non-cached object, then please use the non-caching B<get_node> method.

=head3 get_service( $service )

This is a functionally equivalent non-caching implementation of the B<service> method.

=head3 get_services

Returns an array of L<IBM::StorageSystem::Service> objects representing all configured services on the target
system.

=head3 task( $task )

        # Print the status of the SNAPSHOTS task
        my $snapshots = $ibm->task(SNAPSHOTS);
        print "Status: " . $snapshots->status . "\n";

        # Alternately
        print "Status: " . $ibm->task(SNAPSHOTS)->status . "\n";

Return the task identified by the value of the task parameter as an L<IBM::StorageSystem::Task> object.

B<Note> that this method implements caching and that a cached object will be returned if one is available.
If you require a non-cached object, then please use the non-caching B<get_node> method.

=head3 task( $task )

        # Print the status of the SNAPSHOTS task
        my $snapshots = $ibm->task(SNAPSHOTS);
        print "Status: " . $snapshots->status . "\n";

        # Alternately
        print "Status: " . $ibm->task(SNAPSHOTS)->status . "\n";

Return the task identified by the value of the task parameter as an L<IBM::StorageSystem::Task> object.

B<Note> that this method implements caching and that a cached object will be returned if one is available.
If you require a non-cached object, then please use the non-caching B<get_node> method.

=head3 get_task( $task )

This is a functionally equivalent non-caching implementation of the B<task> method.

=head3 get_tasks

        # Call an alert function for any tasks that are not in an OK state
        map { alert( $_->name ) } grep { $_->status ne 'OK' } $ibm->get_tasks;

Returns an array of L<IBM::StorageSystem::Task> objects representing all tasks on the target system.

=head3 vdisk( $id )

        # Get the VDisk ID 3 and print the VDisk UUID
        my $vdisk = $ibm->vdisk(3);
        print $vdisk->vdisk_UUID;

        # Alternately:
        print $ibm->vdisk(3)->vdisk_UUID;

Returns an L<IBM::StorageSystem::VDisk> object representing the VDisk identified by the numerical ID parameter.

B<Note> that this method implements caching to improve performance and reduce network overhead, and that a cached 
object will be returned if one is present.  If you require a non-cached object then please use the B<get_vdisk>
method.

=head3 get_vdisk( $id )

This is a functionally equivalent non-caching implementation of the B<vdisk> method.

=head3 get_vdisks

        # Print the name, ID, capacity in GB and MDisk group name of all VDisks in a
        # nicely formatted output
        printf( "%-20s%-8s%-15s%20s\n", 'Name', 'ID', 'Capacity (GB)', 'MDisk Group Name' );
        printf( "%-20s%-8s%-15s%20s\n", '-'x18, '-'x4, '-'x12, '-'x15 );
        map { printf( "%-20s%-8s%-15s%20s\n", $_->name, $_->id, (int($_->capacity / (1024**3))), $_->mdisk_grp_name) } 
        grep { $_->status eq 'online' } $ibm->get_vdisks;

        # Should print something like:
        # Name                ID      Capacity (GB)      MDisk Group Name
        # ------------------  ----    ------------       ---------------
        # file-host-1         0       5823               FILE_POOL
        # backup-host-2       1       2330               BACKUP_POOL
        # ... etc.

Returns all configured VDisks in the target system as an array of L<IBM::StorageSystem::VDisk> objects.

=head1 AUTHOR

Luke Poskitt, C<< <ltp at cpan.org> >>

=head1 BUGS

Please report any bugs or feature requests to C<bug-ibm-v7000unified at rt.cpan.org>, or through
the web interface at L<http://rt.cpan.org/NoAuth/ReportBug.html?Queue=IBM-V7000Unified>.  I will be notified, and then you'll
automatically be notified of progress on your bug as I make changes.

=head1 SUPPORT

You can find documentation for this module with the perldoc command.

    perldoc IBM::V7000Unified



=over 4

=item * RT: CPAN's request tracker (report bugs here)

L<http://rt.cpan.org/NoAuth/Bugs.html?Dist=IBM-V7000Unified>

=item * AnnoCPAN: Annotated CPAN documentation

L<http://annocpan.org/dist/IBM-V7000Unified>

=item * CPAN Ratings

L<http://cpanratings.perl.org/d/IBM-V7000Unified>

=item * Search CPAN

L<http://search.cpan.org/dist/IBM-V7000Unified/>

=back


=head1 ACKNOWLEDGEMENTS


=head1 LICENSE AND COPYRIGHT

Copyright 2013 Luke Poskitt.

This program is free software; you can redistribute it and/or modify it
under the terms of either: the GNU General Public License as published
by the Free Software Foundation; or the Artistic License.

See http://dev.perl.org/licenses/ for more information.

=cut