The cinder.volume.drivers.hitachi.hnas_backend Module

Hitachi Unified Storage (HUS-HNAS) platform. Backend operations.

class HNASSSHBackend(backend_opts)

Bases: object

check_snapshot_parent(volume_path, snap_name, fs_label)

Check if a volume is the snapshot source

Parameters:

• volume_path – path of the volume
• snap_name – name of the snapshot
• fs_label – filesystem label

Returns:

True if the volume is the snapshot’s source or False otherwise

file_clone(fs_label, src, name)

Clones NFS files to a new one named ‘name’.

Clone primitive used to support all NFS snapshot/cloning functions.

Parameters:

• fs_label – file system label of the new file
• src – source file
• name – target path of the new created file

get_cloned_file_relatives(file_path, fs_label, raise_except=False)

Gets the files related to a clone

Parameters:

• file_path – path of the cloned file
• fs_label – filesystem of the cloned file
• raise_except – If True exception will be raised for files that

aren’t clones. If False, only an error message is logged. :returns: list with names of the related files

get_evs(fs_label)

Gets the EVS ID for the named filesystem.

Parameters:fs_label – The filesystem label related to the EVS required Returns:EVS ID of the filesystem

get_evs_info()

Gets the IP addresses of all EVSs in HNAS.

Returns:dictionary with EVS information

evs_info={

<IP1>: {evs_number: number identifying the EVS1 on HNAS}, <IP2>: {evs_number: number identifying the EVS2 on HNAS}, …

}

get_export_list()

Gets information on each NFS export.

Returns:a list of the exports configured on HNAS

get_export_path(export, fs_label)

Gets the path of an export on HNAS

Parameters:

• export – the export’s name
• fs_label – the filesystem name

Returns:

string of the export’s path

get_fs_info(fs_label)

Gets the information of a given FS.

Parameters:fs_label – Label of the filesystem Returns:dictionary with FS information

fs_info={

‘id’: a Logical Unit ID, ‘label’: a Logical Unit name, ‘evs_id’: the ID of the EVS in which the filesystem is created (not present if there is a single EVS), ‘total_size’: the total size of the FS (in GB), ‘used_size’: the size that is already used (in GB), ‘available_size’: the free space (in GB) }

get_version()

Gets version information from the storage unit.

Returns:dictionary with HNAS information

storage_version={

‘mac’: HNAS MAC ID, ‘model’: HNAS model, ‘version’: the software version, ‘hardware’: the hardware version, ‘serial’: HNAS serial number}