The master container of the libstorage. More...

#include <Devicegraph.h>

Inheritance diagram for storage::Devicegraph:

Collaboration diagram for storage::Devicegraph:

Public Member Functions
	Devicegraph (const Storage *storage=nullptr)

bool	operator== (const Devicegraph &rhs) const

bool	operator!= (const Devicegraph &rhs) const

const Storage *	get_storage () const

void	load (const std::string &filename)

void	save (const std::string &filename) const

bool	empty () const

size_t	num_devices () const

size_t	num_holders () const

Device *	find_device (sid_t sid)

const Device *	find_device (sid_t sid) const

bool	device_exists (sid_t sid) const

void	clear ()

std::vector< Disk * >	get_all_disks ()

std::vector< const Disk * >	get_all_disks () const

std::vector< Md * >	get_all_mds ()

std::vector< const Md * >	get_all_mds () const

std::vector< LvmVg * >	get_all_lvm_vgs ()

std::vector< const LvmVg * >	get_all_lvm_vgs () const

std::vector< Filesystem * >	get_all_filesystems ()

std::vector< const Filesystem * >	get_all_filesystems () const

void	remove_device (sid_t sid)
	Removes the device with sid from the devicegraph. More...

void	remove_device (Device *a)

void	remove_devices (std::vector< Device * > devices)

Holder *	find_holder (sid_t source_sid, sid_t target_sid)

const Holder *	find_holder (sid_t source_sid, sid_t target_sid) const

void	remove_holder (Holder *holder)

void	check () const

void	copy (Devicegraph &dest) const

void	write_graphviz (const std::string &filename, GraphvizFlags graphviz_flags=GraphvizFlags::NONE) const

Impl &	get_impl ()

const Impl &	get_impl () const

Friends
std::ostream &	operator<< (std::ostream &out, const Devicegraph &devicegraph)

Detailed Description

The master container of the libstorage.

There are two levels of functions to manipulate the device graph. As an example we show how to create a partition table containing one partition on the disk sda.

High-level

* Gpt* gpt = sda->create_partition_table(GPT);

* Partition* sda1 = gpt->create_partition("/dev/sda1", Region(0, 100, sector-size), PRIMARY)

*

These functions will not only create the Gpt and Partition object but also the holders in the device graph.
Low-level

* Gpt* gpt = Gpt::create(staging);

* User::create(staging, sda, gpt);

*

* Partition* sda1 = Partition::create(staging, "/dev/sda1", Region(0, 100, sector-size), PRIMARY);

* Subdevice::create(staging, gpt, sda1);

*

As you can see with the low-level functions you have to create the holders yourself.

Whenever possible use the high-level functions.

Member Function Documentation

void storage::Devicegraph::remove_device ( sid_t sid )

Removes the device with sid from the devicegraph.

Only use this function if there is no special function to delete a device, e.g. PartitionTable.delete_partition() or LvmVg.delete_lvm_lv().

TODO internally redirect to special delete functions?

The documentation for this class was generated from the following file:

/home/abuild/rpmbuild/BUILD/libstorage-ng-3.0.0/storage/Devicegraph.h

Public Member Functions

Friends

Detailed Description

Member Function Documentation