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Recognise jbd (journaling block device) (#89) 

A user reported that they were using an external journal with an ext4
file system, but that GParted didn't recognise it.  (They had the jbd
on an Intel Optane drive and the ext4 file system on an SSD).

Create a jbd like this:
    # mke2fs -O journal_dev -L test-jbd /dev/sdb1
    # blkid /dev/sdb1
    /dev/sdb1: LABEL="test-jbd" UUID="6e52858e-0479-432f-80a1-de42f9a4093e" TYPE="jbd"

Add recognition of jbd.  Use Blue Shadow colour, the same as ext4,
because jbd is primarily used by ext3/4 [1][2].  jbd is also used by
ocfs2 [1][3] and lustre [4][5] clustered file systems, but they are very
unlikely to encountered by GParted users.  Also xfs [6] and jfs [7] can
have external journals so if recognition of them is ever added they will
get the same colour as their respective file systems too.

[1] Journaling block device
    https://en.wikipedia.org/wiki/Journaling_block_device
    "JBD is filesystem-independent. ext3, ext4 and OCFS2 are known to
    use JBD"
[2] https://ext4.wiki.kernel.org/index.php/Frequently_Asked_Questions#What_are_the_key_differences_between_jbd_and_jbd2.3F
[3] OCFS2: The Oracle Clustered File System, Version 2
    https://www.kernel.org/doc/ols/2006/ols2006v1-pages-289-302.pdf
    "Metadata journaling is done on a per node basis with JBD"
[4] Efficient Object Storage Journaling in a Distributed Parallel File
    System
    https://www.usenix.org/legacy/event/fast10/tech/full_papers/oral.pdf
[5] Lustre Software Release 2.x Operations Manual
    https://doc.lustre.org/lustre_manual.pdf
    6.4.2. Choosing Parameters for an External Journal
[6] mkfs.xfs(8) - construct an XFS filesystem
    https://man7.org/linux/man-pages/man8/mkfs.xfs.8.html
    "OPTIONS
    ...
    logdev=device
        This is used to specify that the log section should reside on
        the device separate from the data section.  The internal=1 and
        logdev options are mutually exclusive.
    "
[7] jfs_mkfs(8) - create a JFS formatted partition
    https://manpages.debian.org/testing/jfsutils/jfs_mkfs.8.en.html
    "OPTIONS
    ...
    -j journal_device
        Create the external JFS journal on journal_device, ...
    "

Closes #89 - GParted doesn't recognise EXT4 fs journal partition
This commit is contained in:
Mike Fleetwood 2022-01-24 22:11:39 +00:00 committed by Curtis Gedak
parent 81c4788ae8
commit 157d4e7470
3 changed files with 12 additions and 7 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

15
include/Utils.h
View File

@ -100,15 +100,16 @@ enum FSType
FS_BITLOCKER = 31,
FS_GRUB2_CORE_IMG = 32,
FS_ISO9660 = 33,
FS_LINUX_SWRAID = 34,
FS_LINUX_SWSUSPEND = 35,
FS_REFS = 36,
FS_UFS = 37,
FS_ZFS = 38,
FS_JBD = 34,
FS_LINUX_SWRAID = 35,
FS_LINUX_SWSUSPEND = 36,
FS_REFS = 37,
FS_UFS = 38,
FS_ZFS = 39,
// Partition space usage colours
FS_USED = 39,
FS_UNUSED = 40
FS_USED = 40,
FS_UNUSED = 41
} ;
enum SIZE_UNIT

2
src/GParted_Core.cc
View File

@ -1331,6 +1331,8 @@ FSType GParted_Core::detect_filesystem(const PedDevice *lp_device, const PedPart
return FS_BITLOCKER;
else if ( fsname == "iso9660" )
return FS_ISO9660;
else if ( fsname == "jbd" )
return FS_JBD;
else if ( fsname == "linux_raid_member" )
return FS_LINUX_SWRAID ;
else if ( fsname == "swsusp" ||

2
src/Utils.cc
View File

@ -183,6 +183,7 @@ Glib::ustring Utils::get_color(FSType fstype)
case FS_BITLOCKER: return "#494066"; // Purple Shadow
case FS_GRUB2_CORE_IMG: return "#666666"; // Dark Gray [*]
case FS_ISO9660: return "#D3D3D3"; // Light Gray [*]
case FS_JBD: return "#314E6C"; // Blue Shadow
case FS_LINUX_SWRAID: return "#826647"; // Face Skin Shadow
case FS_LINUX_SWSUSPEND: return "#884631"; // Red Dark
case FS_REFS: return "#3EA281"; // Aquamarine Dark [*]
@ -376,6 +377,7 @@ const Glib::ustring Utils::get_filesystem_string(FSType fstype)
case FS_BITLOCKER: return "bitlocker";
case FS_GRUB2_CORE_IMG: return "grub2 core.img";
case FS_ISO9660: return "iso9660";
case FS_JBD: return "jbd";
case FS_LINUX_SWRAID: return "linux-raid";
case FS_LINUX_SWSUSPEND: return "linux-suspend";
case FS_REFS: return "refs";