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Add ability to resize btrfs file systems (#661715) 

Closes Bug #661715 - use btrfs-tools ability to resize btrfs
                     partitions
This commit is contained in:
Curtis Gedak 2011-10-18 10:14:21 -06:00
parent 9b004634ab
commit ee9f9724e8
1 changed files with 62 additions and 3 deletions
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65
src/btrfs.cc
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@ -1,5 +1,5 @@
/* Copyright (C) 2009,2010 Luca Bruno <lucab@debian.org>
* Copyright (C) 2010 Curtis Gedak
* Copyright (C) 2010, 2011 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
@ -39,6 +39,18 @@ FS btrfs::get_filesystem_support()
if ( ! Glib::find_program_in_path( "btrfsck" ) .empty() )
fs .check = GParted::FS::EXTERNAL ;
//resizing of btrfs requires btrfsctl, mount, and umount
if ( ! Glib::find_program_in_path( "btrfsctl" ) .empty()
&& ! Glib::find_program_in_path( "mount" ) .empty()
&& ! Glib::find_program_in_path( "umount" ) .empty()
&& fs .check
)
{
fs .grow = FS::EXTERNAL ;
if ( fs .read ) //needed to determine a minimum file system size.
fs .shrink = FS::EXTERNAL ;
}
if ( fs .check )
{
fs .copy = GParted::FS::GPARTED ;
@ -125,8 +137,55 @@ bool btrfs::copy( const Glib::ustring & src_part_path,
bool btrfs::resize( const Partition & partition_new, OperationDetail & operationdetail, bool fill_partition )
{
// TODO
return true ;
bool exit_status = false ;
//Create directory
Glib::ustring str_temp = _( "create temporary directory" ) ;
operationdetail .add_child( OperationDetail( str_temp, STATUS_NONE, FONT_BOLD_ITALIC ) ) ;
char dtemplate[] = "/tmp/gparted-XXXXXXXX" ;
Glib::ustring dname = mkdtemp( dtemplate ) ;
if( dname .empty() )
{
//Failed to create temporary directory
str_temp = _( "Failed to create temporary directory." );
operationdetail .get_last_child() .add_child( OperationDetail( str_temp, STATUS_NONE, FONT_ITALIC ) ) ;
return false ;
}
/*TO TRANSLATORS: looks like Created temporary directory /tmp/gparted-XXCOOO8U */
str_temp = String::ucompose ( _("Created temporary directory %1"), dname ) ;
operationdetail .get_last_child() .add_child( OperationDetail( str_temp, STATUS_NONE, FONT_ITALIC ) ) ;
//Mount file system. Needed to resize btrfs.
str_temp = "mount -v -t btrfs " + partition_new .get_path() + " " + dname ;
exit_status = ! execute_command( str_temp, operationdetail ) ;
if ( exit_status )
{
//Build resize command
str_temp = "btrfsctl" ;
if ( ! fill_partition )
{
str_temp += " -r " + Utils::num_to_str( floor( Utils::sector_to_unit(
partition_new .get_sector_length(), partition_new .sector_size, UNIT_KIB ) ) ) + "K" ;
}
else
str_temp += " -r max" ;
str_temp += " " + dname ;
//Execute the command
exit_status = execute_command( str_temp, operationdetail ) ;
//Always unmount the file system
str_temp = "umount -v " + dname ;
execute_command( str_temp, operationdetail ) ;
}
//Always remove the temporary directory name
str_temp = "rmdir -v " + dname ;
execute_command( str_temp, operationdetail ) ;
return exit_status ;
}
void btrfs::read_label( Partition & partition )