what is ext4 file system

ExtThe full name of the Linux extended file system, EXTFS, the Linux extension filesystem, EXT2 represents the second generation of file extension systems, EXT3/EXT4 and so on, they are EXT2 upgrade version, but added the log function, and backward compatibility, So Ext2 is

Disk Layout To better understand the online resizing mechanism, we first need to understand the disk layout of the ext3 and ext4 file systems. For the implementation of this function, these two file systems have the same structure on the disk, and we will not introduce any content unrelated to the online resize function to simplify and highlight the key. The ext3

1. install the software (extundelete depends on the system's e2fsprogs three software packages) [Root @ redhat1 home] # mkdir/mnt/cdrom -- create a CD Mount directory [Root @ redhat1 home] # mount/dev/cdrom/mnt/cdrom-attach a cdMount: block device/dev/sr0 is write-protected, mounting read-only[Root @ redhat1 home] # vim/etc/yum. repos. d/base. repo -- configure the local source of the system [Base]Name = ba

EXT4 support 1EB, why 16T above said too big? The reason is that 32-bit can only support 16T. To enable 64-bit mode, you need to upgrade the tool first:Yum install-y git gcc gcc-c++git clone git://git.kernel.org/pub/scm/fs/ext2/e2fsprogs.gitCD E2fsprogs./configureMake make installvim/etc/mke2fs.confFind the following sections[Fs_types] Ext4 = {features = Has_jou

If the ORACLE data file on the EXT4 file system is accidentally deleted, consider the following two recovery methods:Use testdisk to restore data files from the perspective of the file systemUse prmscan to restore data files from

How do I know whether the system partition format is ext4 or ext3? -- Linux general technology-Linux technology and application information. For details, refer to the following section. Today, I want to partition a new disk by using pm7.0 (because the partition will be formatted when partitioning by this tool in winxp ). Now go to linux. I used mkfs.

When you are young, remember these simple commands and make a small record. Let's take a look at them when you can't remember them. Environment: Oracle linux 6.3I. View the current partition and File System [Root @ OEL63 ~] # Df-hFilesystem Size Used Avail Use % Mounted on/Dev/mapper/vg_oel63-lv_root18 GB 11G 5.9G 65%/Tmpfs 496 M 375 M 121 M 76%/dev/shm/Dev/sda1 485 M 55 M 405 M 12%/boot[Root @ OEL63 ~] # F

Just contact with the FAT32 file system, FAT12 file system, many users are confused, what are these file systems? And what is the effect of

Linux under the file permissions and Windows file permissions compared to the problem, in fact, it is complicated to say, but here, we simplify the story, because, really the two systems are completely contrasted with no meaning; Here is a brief explanation of the file permi

　　How do you open the eml file under Win7/win8? 1. After installing Windows Live Mail on your computer, right-click EML file and select Properties. 2. Click "Change" after "Open with", and then locate and select Windows Live Mail, and then click OK. 3. Double-click the eml file to invoke the Windows Live mail program to read the

Filesystem Hierarchy Standard (file system directory standards) abbreviations, most Linux versions of this file organization, similar to the Windows operating system in the C-disk file directory, FHS tree structure to organize files. In fact, FHS

. NET Core File System [2]: What is FileProvider ?, Corefileprovider In "reading and monitoring file changes", we use three simple examples to demonstrate the preliminary experience of the file

What is NFS? Network File SystemNFS was developed by Sun and launched in 1984. NFS is an RPC service that enables file sharing. It is designed to be used between different systems, therefore, its communication protocol design has

It is known that there is a Hosts file (no suffix) in the window System, which is located in the C:winntsystem32driversetc directory on the Windows system. The file