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caec22871e
Again this is to stop GParted allowing overwrite operations being
performed on an ATARAID member while the array is actively using the
member. This time for dmraid started arrays using the kernel DM (Device
Mapper) driver.
The DMRaid module already uses dmraid to report active array names:
# dmraid -sa -c
isw_ecccdhhiga_MyArray
To find active members in this array, (1) use udev to lookup the kernel
device name:
# udevadm info --query=name /dev/mapper/isw_ecccdhhiga_MyArray
dm-0
(2) list the member names exposed by the kernel DM driver through the
/sys file system.
# ls /sys/block/dm-0/slaves
sdc sdd
# ls -l /sys/block/dm-0/slaves
lrwxrwxrwx 1 root root 0 Nov 24 09:52 sdc -> ../../../../pci0000:00/0000:00:0d.0/ata3/host2/target2:0:0/2:0:0:0/block/sdc
lrwxrwxrwx 1 root root 0 Nov 24 09:52 sdc -> ../../../../pci0000:00/0000:00:0d.0/ata4/host3/target3:0:0/3:0:0:0/block/sdd
Closes #75 - Errors with GPT on RAID 0 ATARAID array
83 lines
3.2 KiB
C++
83 lines
3.2 KiB
C++
/* Copyright (C) 2009, 2010, 2011 Curtis Gedak
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, see <http://www.gnu.org/licenses/>.
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*/
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/* READ THIS!
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* This class was created in an effort to reduce the complexity of the
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* GParted_Core class.
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* This class provides support for motherboard based RAID devices, also know
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* as Fake RAID.
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* Static elements are used in order to reduce the disk accesses required to
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* load the data structures upon each initialization of the class.
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*/
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#ifndef GPARTED_DMRAID_H
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#define GPARTED_DMRAID_H
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#include "Utils.h"
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#include "BlockSpecial.h"
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#include "Partition.h"
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#include "OperationDetail.h"
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#include <glibmm/ustring.h>
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#include <vector>
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namespace GParted
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{
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class DMRaid
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{
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public:
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DMRaid() ;
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DMRaid( const bool & do_refresh ) ;
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~DMRaid() ;
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bool is_dmraid_supported() ;
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bool is_dmraid_device( const Glib::ustring & dev_path ) ;
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int execute_command( const Glib::ustring & command, OperationDetail & operationdetail ) ;
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void get_devices( std::vector<Glib::ustring> & dmraid_devices ) ;
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Glib::ustring get_dmraid_name( const Glib::ustring & dev_path ) ;
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int get_partition_number( const Glib::ustring & partition_name ) ;
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Glib::ustring get_udev_dm_name( const Glib::ustring & dev_path ) ;
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Glib::ustring make_path_dmraid_compatible( Glib::ustring partition_path ) ;
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bool create_dev_map_entries( const Partition & partition, OperationDetail & operationdetail ) ;
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bool create_dev_map_entries( const Glib::ustring & dev_path ) ;
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bool delete_affected_dev_map_entries( const Partition & partition, OperationDetail & operationdetail ) ;
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bool delete_dev_map_entry( const Partition & partition, OperationDetail & operationdetail ) ;
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bool purge_dev_map_entries( const Glib::ustring & dev_path ) ;
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bool update_dev_map_entry( const Partition & partition, OperationDetail & operationdetail ) ;
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bool is_member_active(const Glib::ustring& member_path);
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private:
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void load_dmraid_cache() ;
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void set_commands_found() ;
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void get_dmraid_dir_entries( const Glib::ustring & dev_path, std::vector<Glib::ustring> & dir_list ) ;
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void get_affected_dev_map_entries( const Partition & partition, std::vector<Glib::ustring> & affected_entries ) ;
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void get_partition_dev_map_entries( const Partition & partition, std::vector<Glib::ustring> & partition_entries ) ;
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static std::vector<Glib::ustring> lookup_dmraid_members(const Glib::ustring& array);
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static bool dmraid_cache_initialized ;
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static bool dmraid_found ;
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static bool dmsetup_found ;
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static bool udevadm_found ;
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static std::vector<Glib::ustring> dmraid_devices ;
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static std::vector<BlockSpecial> dmraid_member_cache;
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};
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}//GParted
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#endif /* GPARTED_DMRAID_H */
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