The main differences between the Linux File Systems
EXT - EXTended file system
XFS - Extension of the EXT FS
|
File System |
Ext2- |
Ext3 |
Ext4 |
Xfs |
|
Generations |
2nd Gen of EXT FS |
3rd Gen of EXT FS |
4th Gen of EXT FS |
Extension of the EXT
FS |
|
Default FS |
Default FS before
RHEL5 |
Default FS in RHEL5 |
Default FS in RHEL6 |
Default FS in RHEL7
& later |
|
Maximum File Size |
2TB |
2TB |
16TB |
8 EB (Exabytes) |
|
Maximum File System(Volume) |
32TB |
32TB |
1 EB (Exabyte) |
8 EB (Exabytes) |
|
Maximum Subdirectories |
32000 |
32000 |
64,000 |
Virtually unlimited
(Depedns on inode limit) |
|
Journaling |
No |
Yes (supports
journaling) |
Yes (improved
journaling) |
Yes (improved
journaling) |
|
Performance |
Basic, lacks journaling |
Improved over ext2 with
journaling |
Faster (extents,
multiblock allocation) |
Optimized for large
files and parallel I/O |
|
File System Check Time |
Longer due to lack of
journaling |
Faster due to journaling |
Faster (pre-allocation
of space) |
Faster, can scale to
large systems |
|
Snapshot Support |
No |
No |
Yes (with LVM or other
tools) |
Yes (with built-in
support) |
|
Recovery |
Manual fsck (longer
recovery) |
Faster recovery due to
journaling |
Faster recovery, better
crash recovery |
Fast recovery, high
scalability |
|
Create a file system |
mkfs.ext2 |
mkfs.ext3 |
mkfs.ext4 |
mkfs.xfs |
|
File system check |
e2fsck |
e2fsck |
e2fsck |
xfs_repair |
|
Resizing a file system |
resize2fs |
resize2fs |
resize2fs |
xfs_growfs |
|
Shrink Support |
Does NOT Support |
Does NOT Support |
Support Shrink |
Does NOT Support |
|
Save an image of a file system |
e2image |
e2image |
e2image |
xfs_metadump and
xfs_mdrestore |
|
Label or tune a file system |
tune2fs |
tune2fs |
tune2fs |
xfs_admin |
|
Backup a file system |
dump and restore |
dump and restore |
dump and restore |
xfsdump and xfsrestore |
Post a Comment