Added new class for dmraid support

svn path=/trunk/; revision=1092
This commit is contained in:
Curtis Gedak 2009-03-14 20:02:41 +00:00
parent dbf81bc417
commit 5865c92dc0
6 changed files with 451 additions and 1 deletions

View File

@ -1,3 +1,13 @@
2009-03-14 Curtis Gedak <gedakc@gmail.com>
* include/DMRaid.h,
include/Makefile.am,
src/DMRaid.cc,
src/Makefile.am: Added new class for dmraid support.
* README: Added note about requirements for dmraid support.
- added note that xxd command also needed for NTFS support.
2009-03-13 Curtis Gedak <gedakc@gmail.com>
* include/Utils.h,

11
README
View File

@ -112,7 +112,7 @@ Optional packages include:
hfsutils
hfsprogs
jfsutils
ntfsprogs
ntfsprogs - xxd command from vim-common also required
reiser4progs
reiserfsprogs
xfsprogs
@ -125,3 +125,12 @@ Optional packages include:
ext4 file detection.
blkid is part of the e2fsprogs package.
For dmraid support, the following packages are required:
dmsetup - removes /dev/mapper entries
dmraid - lists dmraid devices and creates /dev/mapper entries
kpartx - creates /dev/mapper entries such as
/dev/mapper/isw_idedecefg_Volume0p1

77
include/DMRaid.h Normal file
View File

@ -0,0 +1,77 @@
/* Copyright (C) 2009 Curtis Gedak
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Library General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
/* READ THIS!
* This class was created in an effort to reduce the complexity of the
* GParted_Core class.
* This class provides support for motherboard based RAID devices, also know
* as Fake RAID.
* Static elements are used in order to reduce the disk accesses required to
* load the data structures upon each initialization of the class.
*/
#ifndef DMRAID_H_
#define DMRAID_H_
#include "../include/Utils.h"
#include "../include/Partition.h"
#include "../include/OperationDetail.h"
#include <vector>
//Declare some constants
const Glib::ustring DEV_MAP_PATH = "/dev/mapper/" ;
namespace GParted
{
class DMRaid
{
public:
DMRaid() ;
DMRaid( const bool & do_refresh ) ;
~DMRaid() ;
bool is_dmraid_supported() ;
bool is_dmraid_device( const Glib::ustring & dev_path ) ;
void get_devices( std::vector<Glib::ustring> & dmraid_devices ) ;
Glib::ustring get_dmraid_name( const Glib::ustring & dev_path ) ;
Glib::ustring get_dmraid_prefix( const Glib::ustring & dev_path ) ;
int execute_command( const Glib::ustring & command, OperationDetail & operationdetail ) ;
bool create_dev_map_entries( const Partition & partition, OperationDetail & operationdetail ) ;
bool create_dev_map_entries( const Glib::ustring & dev_path ) ;
bool delete_affected_dev_map_entries( const Partition & partition, OperationDetail & operationdetail ) ;
bool delete_dev_map_entry( const Partition & partition, OperationDetail & operationdetail ) ;
bool partition_is_mounted_by_path( const Glib::ustring & partition_path
, const std::vector<Glib::ustring> & mount_info ) ;
bool purge_dev_map_entries( const Glib::ustring & dev_path ) ;
bool update_dev_map_entry( const Partition & partition, OperationDetail & operationdetail ) ;
private:
void load_dmraid_cache() ;
void set_commands_found() ;
void get_dmraid_dir_entries( const Glib::ustring & dev_path, std::vector<Glib::ustring> & dir_list ) ;
void get_affected_dev_map_entries( const Partition & partition, std::vector<Glib::ustring> & affected_entries ) ;
static bool dmraid_cache_initialized ;
static bool dmraid_found ;
static bool dmsetup_found ;
static bool kpartx_found ;
static std::vector<Glib::ustring> dmraid_devices ;
};
}//GParted
#endif /* DMRAID_H_ */

View File

@ -13,6 +13,7 @@ EXTRA_DIST = \
DialogFeatures.h \
DialogManageFlags.h \
DrawingAreaVisualDisk.h \
DMRaid.h \
FileSystem.h \
Frame_Resizer_Base.h \
Frame_Resizer_Extended.h \

352
src/DMRaid.cc Normal file
View File

@ -0,0 +1,352 @@
/* Copyright (C) 2009 Curtis Gedak
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Library General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#include "../include/DMRaid.h"
#include <stdlib.h> //atoi function
namespace GParted
{
//Initialize static data elements
bool DMRaid::dmraid_cache_initialized = false ;
bool DMRaid::dmraid_found = false ;
bool DMRaid::dmsetup_found = false ;
bool DMRaid::kpartx_found = false ;
std::vector<Glib::ustring> DMRaid::dmraid_devices ;
DMRaid::DMRaid()
{
//Ensure that cache has been loaded at least once
if ( ! dmraid_cache_initialized ) {
dmraid_cache_initialized = true ;
set_commands_found() ;
load_dmraid_cache() ;
}
}
DMRaid::DMRaid( const bool & do_refresh )
{
//Ensure that cache has been loaded at least once
if ( ! dmraid_cache_initialized )
{
dmraid_cache_initialized = true ;
set_commands_found() ;
if ( do_refresh == false )
load_dmraid_cache() ;
}
if ( do_refresh )
load_dmraid_cache() ;
}
DMRaid::~DMRaid()
{
}
void DMRaid::load_dmraid_cache()
{
//Load data into dmraid structures
Glib::ustring output, error ;
if ( dmraid_found ) {
if ( ! Utils::execute_command( "dmraid -sa -c", output, error, true ) )
{
Glib::ustring temp = Utils::regexp_label( output, "^(no raid disks).*" ) ;
if ( temp == "no raid disks" )
dmraid_devices .clear() ;
else
Utils::tokenize( output, dmraid_devices, "\n" ) ;
}
else
dmraid_devices .clear() ;
}
}
void DMRaid::set_commands_found()
{
//Set status of commands found
dmraid_found = (! Glib::find_program_in_path( "dmraid" ) .empty() ) ;
dmsetup_found = (! Glib::find_program_in_path( "dmsetup" ) .empty() ) ;
kpartx_found = (! Glib::find_program_in_path( "kpartx" ) .empty() ) ;
}
bool DMRaid::is_dmraid_supported()
{
//Determine if dmraid is supported on this computer
return ( dmraid_found && dmsetup_found && kpartx_found ) ;
}
bool DMRaid::is_dmraid_device( const Glib::ustring & dev_path )
{
//Determine if the device is a dmraid device
bool device_found = false ; //assume not found
if ( is_dmraid_supported() )
{
for ( unsigned int k=0; k < dmraid_devices .size(); k++ )
if ( dev_path == (DEV_MAP_PATH + dmraid_devices[k]) )
device_found = true ;
}
return device_found ;
}
//FIXME: Copy of code from FileSystem.cc.
// This should be replaced when a general execute_command with asynchronous updates is built.
int DMRaid::execute_command( const Glib::ustring & command, OperationDetail & operationdetail )
{
Glib::ustring output, error ;
operationdetail .add_child( OperationDetail( command, STATUS_NONE, FONT_BOLD_ITALIC ) ) ;
int exit_status = Utils::execute_command( "nice -n 19 " + command, output, error ) ;
if ( ! output .empty() )
operationdetail .get_last_child() .add_child( OperationDetail( output, STATUS_NONE, FONT_ITALIC ) ) ;
if ( ! error .empty() )
operationdetail .get_last_child() .add_child( OperationDetail( error, STATUS_NONE, FONT_ITALIC ) ) ;
return exit_status ;
}
void DMRaid::get_devices( std::vector<Glib::ustring> & device_list )
{
//Retrieve list of dmraid devices
device_list .clear() ;
for ( unsigned int k=0; k < dmraid_devices .size(); k++ )
device_list .push_back( DEV_MAP_PATH + dmraid_devices[k] ) ;
}
Glib::ustring DMRaid::get_dmraid_name( const Glib::ustring & dev_path )
{
//Retrieve name of dmraid device
Glib::ustring dmraid_name = "" ;
Glib::ustring regexp = "" ;
for ( unsigned int k=0; k < dmraid_devices .size(); k++ )
{
regexp = ".*(" + dmraid_devices[k] + ").*" ;
if ( Utils::regexp_label( dev_path, regexp ) == dmraid_devices[k] )
dmraid_name = dmraid_devices[k] ;
}
return dmraid_name ;
}
Glib::ustring DMRaid::get_dmraid_prefix( const Glib::ustring & dev_path )
{
//Retrieve prefix of dmraid device representing fake RAID manufacturer
//First try to get longer prefix including underscore to more accurately define the dmraid prefix
Glib::ustring dmraid_name = get_dmraid_name( dev_path ) ;
Glib::ustring regexp = "^([^_]*_[^_]*)" ;
Glib::ustring dmraid_prefix = Utils::regexp_label( dmraid_name, regexp ) ;
if ( dmraid_prefix .size() <= 0 )
{
//Retrieve shorter prefix because longer name did not work
regexp = "^([^_]*)" ;
dmraid_prefix = Utils::regexp_label( dmraid_name, regexp ) ;
}
return dmraid_prefix ;
}
void DMRaid::get_dmraid_dir_entries( const Glib::ustring & dev_path, std::vector<Glib::ustring> & dir_list )
{
//Build list of all device entries matching device path
Glib::ustring dmraid_name = get_dmraid_name( dev_path ) ;
//Loop through the entries in the directory
Glib::ustring filename = "" ;
Glib::Dir dir( DEV_MAP_PATH) ;
while ( ( filename = dir .read_name() ) != "" )
{
if ( filename == "control" )
continue ;
if ( Utils::regexp_label( filename, "^(" + dmraid_name + ")" ) == dmraid_name )
dir_list .push_back( filename ) ;
}
}
bool DMRaid::create_dev_map_entries( const Partition & partition, OperationDetail & operationdetail )
{
//Create all missing dev mapper entries for a specified device.
// Try both dmraid -ay and kpartx -a
Glib::ustring command ;
bool exit_status = true ; //assume success
/*TO TRANSLATORS: looks like create /dev/mapper entries */
Glib::ustring tmp = String::ucompose ( _("create missing %1 entries"), DEV_MAP_PATH ) ;
operationdetail .add_child( OperationDetail( tmp ) );
Glib::ustring dmraid_prefix = get_dmraid_prefix( partition .device_path ) ;
command = "dmraid -ay -v " + dmraid_prefix ;
if ( execute_command( command, operationdetail .get_last_child() ) )
exit_status = false ; //command failed
Glib::ustring dmraid_name = get_dmraid_name( partition .device_path ) ;
command = "kpartx -a -v " + DEV_MAP_PATH + dmraid_name ;
if ( execute_command( command, operationdetail .get_last_child() ) )
exit_status = false ; //command failed
operationdetail .get_last_child() .set_status( exit_status ? STATUS_SUCCES : STATUS_ERROR ) ;
return exit_status ;
}
bool DMRaid::create_dev_map_entries( const Glib::ustring & dev_path )
{
//Create all missing dev mapper entries for a specified device.
// Try both dmraid -ay and kpartx -a
Glib::ustring command, output, error ;
Glib::ustring dmraid_prefix = get_dmraid_prefix( dev_path ) ;
Glib::ustring dmraid_name = get_dmraid_name( dev_path ) ;
command = "dmraid -ay -v " + dmraid_prefix + " && kpartx -a -v " + DEV_MAP_PATH + dmraid_name ;
bool exit_status = ! Utils::execute_command( command, output, error, true ) ;
return exit_status ;
}
void DMRaid::get_affected_dev_map_entries( const Partition & partition, std::vector<Glib::ustring> & affected_entries )
{
//Build list of affected /dev/mapper entries when a partition is to be deleted.
Glib::ustring dmraid_name = get_dmraid_name( partition .device_path ) ;
Glib::ustring regexp = "^" + DEV_MAP_PATH + "(.*)$" ;
Glib::ustring partition_name = Utils::regexp_label( partition .get_path(), regexp ) ;
affected_entries .push_back( partition_name ) ;
if ( partition .inside_extended )
{
std::vector<Glib::ustring> dir_list ;
//Retrieve list of matching directory entries
get_dmraid_dir_entries( partition .device_path, dir_list );
Glib::ustring dmraid_name = get_dmraid_name( partition .device_path ) ;
//All logical partition numbers greater than the partition to be deleted will be affected
for ( unsigned int k=0; k < dir_list .size(); k++ )
{
if ( Utils::regexp_label( dir_list[k], "^(" + dmraid_name + ")" ) == dmraid_name )
{
if ( std::atoi( Utils::regexp_label( dir_list[k],
dmraid_name + "p?([0-9]+)"
) .c_str()
) > partition .partition_number
)
affected_entries .push_back( dir_list[k] ) ;
}
}
}
}
bool DMRaid::delete_affected_dev_map_entries( const Partition & partition, OperationDetail & operationdetail )
{
//Delete all affected dev mapper entries (logical partitions >= specificied partition)
std::vector<Glib::ustring> affected_entries ;
Glib::ustring command ;
bool exit_status = true ; //assume successful
/*TO TRANSLATORS: looks like delete affected /dev/mapper entries */
Glib::ustring tmp = String::ucompose ( _("delete affected %1 entries"), DEV_MAP_PATH ) ;
operationdetail .add_child( OperationDetail( tmp ) );
get_affected_dev_map_entries( partition, affected_entries ) ;
for ( unsigned int k=0; k < affected_entries .size(); k++ )
{
command = "dmsetup remove " + DEV_MAP_PATH + affected_entries[k] ;
if ( execute_command( command, operationdetail .get_last_child() ) )
exit_status = false ; //command failed
}
operationdetail .get_last_child() .set_status( exit_status ? STATUS_SUCCES : STATUS_ERROR ) ;
return exit_status ;
}
bool DMRaid::delete_dev_map_entry( const Partition & partition, OperationDetail & operationdetail )
{
//Delete a single dev mapper entry
/*TO TRANSLATORS: looks like delete /dev/mapper entry */
Glib::ustring tmp = String::ucompose ( _("delete %1 entry"), DEV_MAP_PATH ) ;
operationdetail .add_child( OperationDetail( tmp ) );
Glib::ustring command = "dmsetup remove " + partition .get_path() ;
bool exit_status = ! execute_command( command, operationdetail .get_last_child() ) ;
operationdetail .get_last_child() .set_status( exit_status ? STATUS_SUCCES : STATUS_ERROR ) ;
return exit_status ;
}
bool DMRaid::purge_dev_map_entries( const Glib::ustring & dev_path )
{
//Delete all dev mapper entries for dmraid device
std::vector<Glib::ustring> dir_list ;
Glib::ustring command ;
Glib::ustring output, error ;
bool exit_status = true ; //assume successful
get_dmraid_dir_entries( dev_path, dir_list ) ;
for ( unsigned int k=0; k < dir_list .size(); k++ )
{
command = "dmsetup remove " + DEV_MAP_PATH + dir_list[k] ;
if ( Utils::execute_command( command, output, error, true ) )
exit_status = false ; //command failed
}
return exit_status ;
}
bool DMRaid::update_dev_map_entry( const Partition & partition, OperationDetail & operationdetail )
{
//Update dmraid entry by first deleting the entry then recreating the entry
bool exit_status = true ; //assume successful
/*TO TRANSLATORS: looks like update /dev/mapper entry */
Glib::ustring tmp = String::ucompose ( _("update %1 entry"), DEV_MAP_PATH ) ;
operationdetail .add_child( OperationDetail( tmp ) );
if( ! delete_dev_map_entry( partition , operationdetail .get_last_child() ) )
exit_status = false ; //command failed
if( ! create_dev_map_entries( partition , operationdetail .get_last_child() ) )
exit_status = false ; //command failed
operationdetail .get_last_child() .set_status( exit_status ? STATUS_SUCCES : STATUS_ERROR ) ;
return exit_status ;
}
}//GParted

View File

@ -22,6 +22,7 @@ gpartedbin_SOURCES = \
DialogFeatures.cc \
DialogManageFlags.cc \
DrawingAreaVisualDisk.cc \
DMRaid.cc \
FileSystem.cc \
Frame_Resizer_Base.cc \
Frame_Resizer_Extended.cc \