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The btrfs programs only provide approximations of file system sizes because they display figures using binary prefix multipliers to two decimal places of precision. E.g. 2.00GB. For partition sizes where the contained file system size rounds upwards, GParted will fail to read the file system usage and report a warning because the file system will appear to be larger than the partition. For example, create a 2047 MiB partition containing a btrfs file system and display its size. # btrfs filesystem show Label: none uuid: 92535375-5e76-4a70-896a-8d796a577993 Total devices 1 FS bytes used 28.00KB devid 1 size 2.00GB used 240.62MB path /dev/sda12 The file system size appears to be 2048 MiB, but that is larger than the partition, hence the issue GParted has. (Actually uses the btrfs devid size which is the size of the btrfs file system within the partition in question). This issue is new with the fix for Bug #499202 because it queries the file system sizes for the first time. The same issue could theoretically occur previously, but with the used figure (FS bytes used). This would have been virtually impossible to trigger because btrfs file system would have to have been greater than 99% full, but btrfs has been notorious for early reporting of file system full. The fix is that if a btrfs file system size appears larger than the partition size, but the minimum possible size which could have been rounded to the reported figure is within the partition size use the smaller partition size instead. Apply the method to the used figure too, in case the file system is 100% full. Also if the btrfs file system size appears smaller than the partition size, but the maximum possible size which could have been rounded to the reported figure is within the partition size use the larger partition size instead to avoid reporting, presumably false, unallocated space. Not applied to file system used figure. Bug 499202 - gparted does not see the difference if partition size differs from filesystem size |
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compose | ||
data | ||
doc | ||
help | ||
include | ||
po | ||
src | ||
.cvsignore | ||
.gitignore | ||
AUTHORS | ||
autogen.sh | ||
ChangeLog | ||
configure.in | ||
COPYING | ||
COPYING-DOCS | ||
gparted.desktop.in.in | ||
gparted.doap | ||
gparted.in | ||
HACKING | ||
Makefile.am | ||
NEWS | ||
README |
GPARTED ======= Gparted is the Gnome Partition Editor for creating, reorganizing, and deleting disk partitions. A hard disk is usually subdivided into one or more partitions. These partitions are normally not re-sizable (making one smaller and the adjacent one larger.) Gparted makes it possible for you to take a hard disk and change the partition organization, while preserving the partition contents. More specifically, Gparted enables you to create, destroy, resize, move, check, label, and copy partitions, and the file systems contained within. This is useful for creating space for new operating systems, reorganizing disk usage, and mirroring one partition with another (disk imaging). Gparted can also be used with storage devices other than hard disks, such as USB flash drives, and memory cards. Visit http://gparted.org for more information. NEWS ---- Information about changes to this release, and past releases can be found in the file: NEWS INSTALL ------- a. Pre-built Binary Many GNU/Linux distributions already provide a pre-built binary package for GParted. Instructions on how to install GParted on some distributions is given below: (K)Ubuntu or Debian ------------------- sudo apt-get install gparted Fedora ------ su - yum install gparted b. Building from Source Building Gparted from source requires that several dependencies are installed. These include: g++ e2fsprogs parted gtkmm24 gettext gnome-doc-utils - required if help documentation is to be built On (K)Ubuntu, these dependencies may be obtained by running the following command; sudo apt-get install build-essential e2fsprogs uuid uuid-dev \ gnome-common libparted-dev libgtkmm-2.4-dev \ libdevmapper-dev gnome-doc-utils On Fedora, you will need to run (as root); yum install gtkmm24-devel parted-devel e2fsprogs-devel gettext \ 'perl(XML::Parser)' desktop-file-utils libuuid-devel \ gnome-doc-utils rarian-compat yum groupinstall 'Development Tools' On openSUSE, these dependencies may be obtained by running the following command; sudo zypper install automake autoconf gcc-g++ make gnome-common \ libuuid-devel parted-devel gtkmm2-devel \ gnome-doc-utils-devel Briefly, the shell commands `./configure; make; make install' should configure, build, and install this package. If you wish to build this package without the help documentation use the --disable-doc flag: E.g., ./configure --disable-doc If you wish to build this package for use on a desktop that does not support scrollkeeper use the --disable-scrollkeeper flag: E.g., ./configure --disable-scrollkeeper If you wish to build this package to use native libparted /dev/mapper dmraid support use the --enable-libparted-dmraid flag: E.g., ./configure --enable-libparted-dmraid Please note that more than one configure flags can be used: E.g., ./configure --disable-doc --enable-libparted-dmraid The INSTALL file contains further GNU installation instructions. COPYING ------- The copying conditions can be found in the file: COPYING DIRECTORIES ------------ compose - contains String::ucompose() function data - contains desktop icons doc - contains manual page documentation help - contains GParted Manual and international translations include - contains source header files m4 - contains macro files po - contains international language translations src - contains C++ source code DISTRIBUTION NOTES ------------------ Gparted uses GNU libparted to detect and manipulate devices and partition tables. Several optional packages provide additional file system support. Optional packages include: btrfs-tools e2fsprogs dosfstools mtools - required to read and write FAT16/32 volume labels and UUIDs hfsutils hfsprogs jfsutils nilfs-utils ntfsprogs / ntfs-3g reiser4progs reiserfsprogs xfsprogs, xfsdump NOTE: * If the vol_id command is in the search PATH, it will be used to read linux-swap, reiser4, hfs, and hfs+ file system volume labels. * If the blkid command is in the search path, it will be used to read file system UUIDs and labels. It is also used for ext4 file system detection. blkid is part of the util-linux package and e2fsprogs package before that. For Linux software RAID support, the following package is required: mdadm - tool to administer Linux MD arrays For dmraid support, the following packages are required: dmsetup - removes /dev/mapper entries dmraid - lists dmraid devices and creates /dev/mapper entries For GNU/Linux distribution dmraid support, the following are required: - kernel built with Device Mapping and Mirroring built. From menuconfig, it is under Device Drivers -> <something> (RAID & LVM). - dmraid drive arrays activated on boot (e.g., dmraid -ay). For LVM2 Physical Volume support the following command is required: lvm - LVM2 administration tool And device-mapper support in the kernel. For attempt data rescue for lost partitions, the following package is required: gpart - guesses PC-type hard disk partitions Several more commands are optionally used by GParted if found on the system. These commands include: blkid - used to read volume labels and detect ext4 file systems vol_id - used to read volume labels udisks - used to prevent automounting of file systems devkit-disks - used to prevent automounting of file systems {filemanager} - used in attempt data rescue to display discovered file systems. (e.g., nautilus, pcmanfm) hal-lock - used to prevent automounting of file systems gksu - used to acquire root privileges in .desktop file, but only if available when gparted source is configured. udevinfo - used in dmraid to query udev name udevadm - used in dmraid to query udev name yelp - used to display help manual