2010-01-02 04:11:50 -07:00
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/* Copyright (C) 2009,2010 Luca Bruno <lucab@debian.org>
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2010-10-19 13:35:53 -06:00
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* Copyright (C) 2010 Curtis Gedak
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2010-01-02 04:11:50 -07:00
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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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2014-01-23 03:59:48 -07:00
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* GNU General Public License for more details.
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2010-01-02 04:11:50 -07:00
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*
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* You should have received a copy of the GNU General Public License
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2014-01-23 03:59:48 -07:00
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* along with this program; if not, see <http://www.gnu.org/licenses/>.
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2010-01-02 04:11:50 -07:00
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*/
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2013-05-27 05:20:16 -06:00
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#ifndef GPARTED_BTRFS_H
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#define GPARTED_BTRFS_H
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2010-01-02 04:11:50 -07:00
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#include "../include/FileSystem.h"
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2015-11-25 07:55:19 -07:00
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#include "../include/Partition.h"
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2010-01-02 04:11:50 -07:00
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namespace GParted
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{
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2014-04-10 15:28:40 -06:00
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struct BTRFS_Device
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{
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int devid ;
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std::vector<Glib::ustring> members ;
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} ;
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2010-01-02 04:11:50 -07:00
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class btrfs : public FileSystem
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{
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public:
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FS get_filesystem_support() ;
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void set_used_sectors( Partition & partition ) ;
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Detect busy status of multi-device btrfs file systems (#723842)
Busy detection of file systems works by checking if the device is
mounted (appears in the mount_info map). For a multi-device btrfs file
system this will only report one of the devices as busy, not all of
them.
# btrfs filesystem show /dev/sdb1
Label: none uuid: 36eb51a2-2927-4c92-820f-b2f0b5cdae50
Total devices 2 FS bytes used 156.00KB
devid 2 size 2.00GB used 512.00MB path /dev/sdb2
devid 1 size 2.00GB used 240.75MB path /dev/sdb1
# mount /dev/sdb1 /mnt/1
# grep btrfs /proc/mounts
/dev/sdb1 /mnt/1 btrfs rw,seclabel,relatime,ssd,space_cache 0 0
GParted will only report /dev/sdb1 as busy, but not /dev/sdb2.
Add btrfs specific is_busy() method which reports the device as busy if
any of the devices in the btrfs file system are mounted. This uses a
cache which maps device membership in all btrfs file systems. The cache
is cleared on GParted refresh and incrementally populated as each btrfs
partition is checked for busy status.
WARNING:
Removal of the mounting device from a btrfs file system makes it
impossible to determine whether the file system is mounted or not for
linux <= 3.4. This is because /proc/mounts continues to show the old
device which is no longer a member of the file system.
# btrfs device delete /dev/sdb1 /mnt/1
# sync
# grep btrfs /proc/mounts
/dev/sdb1 /mnt/1 btrfs rw,seclabel,relatime,ssd,space_cache 0 0
# btrfs filesystem show /dev/sdb1
# btrfs filesystem show /dev/sdb2
Label: none uuid: 36eb51a2-2927-4c92-820f-b2f0b5cdae50
Total devices 1 FS bytes used 28.00KB
devid 2 size 2.00GB used 1.02GB path /dev/sdb2
Fixed in linux 3.5 by commit:
Btrfs: implement ->show_devname
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=9c5085c147989d48dfe74194b48affc23f376650
Bug #723842 - GParted resizes the wrong filesystem (does not pass the
devid to btrfs filesystem resize)
2014-02-17 15:39:34 -07:00
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bool is_busy( const Glib::ustring & path ) ;
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2010-01-02 04:11:50 -07:00
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void read_label( Partition & partition ) ;
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bool write_label( const Partition & partition, OperationDetail & operationdetail ) ;
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2012-01-22 13:49:52 -07:00
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void read_uuid( Partition & partition ) ;
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2015-06-19 06:02:32 -06:00
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bool write_uuid( const Partition & partition, OperationDetail & operationdetail );
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2010-01-02 04:11:50 -07:00
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bool create( const Partition & new_partition, OperationDetail & operationdetail ) ;
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bool resize( const Partition & partition_new, OperationDetail & operationdetail, bool fill_partition = false ) ;
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bool check_repair( const Partition & partition, OperationDetail & operationdetail ) ;
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Query unallocated space for unmounted file systems (#499202)
Update file system specific implementations to set the size and free
space, thus allowing the unallocated space in the partition to be
calculated, for the following unmounted file systems:
btrfs, ext2, ext3, ext4, fat16, fat32, jfs, nilfs2, ntfs, reiserfs,
reiser4, xfs
Bug #499202 - gparted does not see the difference if partition size
differs from filesystem size
2012-01-10 08:19:01 -07:00
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Detect busy status of multi-device btrfs file systems (#723842)
Busy detection of file systems works by checking if the device is
mounted (appears in the mount_info map). For a multi-device btrfs file
system this will only report one of the devices as busy, not all of
them.
# btrfs filesystem show /dev/sdb1
Label: none uuid: 36eb51a2-2927-4c92-820f-b2f0b5cdae50
Total devices 2 FS bytes used 156.00KB
devid 2 size 2.00GB used 512.00MB path /dev/sdb2
devid 1 size 2.00GB used 240.75MB path /dev/sdb1
# mount /dev/sdb1 /mnt/1
# grep btrfs /proc/mounts
/dev/sdb1 /mnt/1 btrfs rw,seclabel,relatime,ssd,space_cache 0 0
GParted will only report /dev/sdb1 as busy, but not /dev/sdb2.
Add btrfs specific is_busy() method which reports the device as busy if
any of the devices in the btrfs file system are mounted. This uses a
cache which maps device membership in all btrfs file systems. The cache
is cleared on GParted refresh and incrementally populated as each btrfs
partition is checked for busy status.
WARNING:
Removal of the mounting device from a btrfs file system makes it
impossible to determine whether the file system is mounted or not for
linux <= 3.4. This is because /proc/mounts continues to show the old
device which is no longer a member of the file system.
# btrfs device delete /dev/sdb1 /mnt/1
# sync
# grep btrfs /proc/mounts
/dev/sdb1 /mnt/1 btrfs rw,seclabel,relatime,ssd,space_cache 0 0
# btrfs filesystem show /dev/sdb1
# btrfs filesystem show /dev/sdb2
Label: none uuid: 36eb51a2-2927-4c92-820f-b2f0b5cdae50
Total devices 1 FS bytes used 28.00KB
devid 2 size 2.00GB used 1.02GB path /dev/sdb2
Fixed in linux 3.5 by commit:
Btrfs: implement ->show_devname
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=9c5085c147989d48dfe74194b48affc23f376650
Bug #723842 - GParted resizes the wrong filesystem (does not pass the
devid to btrfs filesystem resize)
2014-02-17 15:39:34 -07:00
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static void clear_cache() ;
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2014-03-25 17:03:30 -06:00
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static Glib::ustring get_mount_device( const Glib::ustring & path ) ;
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2014-05-16 13:32:37 -06:00
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static std::vector<Glib::ustring> get_members( const Glib::ustring & path ) ;
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Detect busy status of multi-device btrfs file systems (#723842)
Busy detection of file systems works by checking if the device is
mounted (appears in the mount_info map). For a multi-device btrfs file
system this will only report one of the devices as busy, not all of
them.
# btrfs filesystem show /dev/sdb1
Label: none uuid: 36eb51a2-2927-4c92-820f-b2f0b5cdae50
Total devices 2 FS bytes used 156.00KB
devid 2 size 2.00GB used 512.00MB path /dev/sdb2
devid 1 size 2.00GB used 240.75MB path /dev/sdb1
# mount /dev/sdb1 /mnt/1
# grep btrfs /proc/mounts
/dev/sdb1 /mnt/1 btrfs rw,seclabel,relatime,ssd,space_cache 0 0
GParted will only report /dev/sdb1 as busy, but not /dev/sdb2.
Add btrfs specific is_busy() method which reports the device as busy if
any of the devices in the btrfs file system are mounted. This uses a
cache which maps device membership in all btrfs file systems. The cache
is cleared on GParted refresh and incrementally populated as each btrfs
partition is checked for busy status.
WARNING:
Removal of the mounting device from a btrfs file system makes it
impossible to determine whether the file system is mounted or not for
linux <= 3.4. This is because /proc/mounts continues to show the old
device which is no longer a member of the file system.
# btrfs device delete /dev/sdb1 /mnt/1
# sync
# grep btrfs /proc/mounts
/dev/sdb1 /mnt/1 btrfs rw,seclabel,relatime,ssd,space_cache 0 0
# btrfs filesystem show /dev/sdb1
# btrfs filesystem show /dev/sdb2
Label: none uuid: 36eb51a2-2927-4c92-820f-b2f0b5cdae50
Total devices 1 FS bytes used 28.00KB
devid 2 size 2.00GB used 1.02GB path /dev/sdb2
Fixed in linux 3.5 by commit:
Btrfs: implement ->show_devname
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=9c5085c147989d48dfe74194b48affc23f376650
Bug #723842 - GParted resizes the wrong filesystem (does not pass the
devid to btrfs filesystem resize)
2014-02-17 15:39:34 -07:00
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Query unallocated space for unmounted file systems (#499202)
Update file system specific implementations to set the size and free
space, thus allowing the unallocated space in the partition to be
calculated, for the following unmounted file systems:
btrfs, ext2, ext3, ext4, fat16, fat32, jfs, nilfs2, ntfs, reiserfs,
reiser4, xfs
Bug #499202 - gparted does not see the difference if partition size
differs from filesystem size
2012-01-10 08:19:01 -07:00
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private:
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2014-04-10 15:28:40 -06:00
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static const BTRFS_Device & get_cache_entry( const Glib::ustring & path ) ;
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2012-07-07 05:23:01 -06:00
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static Byte_Value btrfs_size_to_num( Glib::ustring str, Byte_Value ptn_bytes, bool scale_up ) ;
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static gdouble btrfs_size_max_delta( Glib::ustring str ) ;
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static gdouble btrfs_size_to_gdouble( Glib::ustring str ) ;
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2010-01-02 04:11:50 -07:00
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};
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} //GParted
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2013-05-27 05:20:16 -06:00
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#endif /* GPARTED_BTRFS_H */
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