Sometimes your system may display an error code indicating the linux ext2 ext3 file system. This problem can have many causes.
PC running slow?
Support for ext2 second extended file system. Ext3 stands for Third File Physique extension. Ext4 stands for Extended List Four, which was introduced in 1993.
The image system has its pros and cons. In this article, we aim to examine in detail the features of the Linux EXT file system (Ext only two, Ext3 Ext4). Arrived
- What is an ext file system?
- Developing an ext file system. The evolution of version history.
- Features of the Ext4 computer file system
- Advantages and disadvantages of the Ext4 file system structure
- EXT file structure
- Should I disable logging in circles?
- How to open an EXT drive in Windows ?
- Best alternatives to the sending system >
What Is Ext
Is ext2 better than ext3?
Ext3, November 2001, was to contribute to the third extended file system with Linux 2.4. Compared to Ext2, another advantage of Ext3 is logging, in which everything can be tracked for changes. This improves reliability and reduces the chance of file system corruption due to system crashes or power failures.
The EXT (Extended File System) file system was specifically designed for the Linux operating system. The main goal of the developers of Ext oft was to overcome the large writable file size, which was now only 64 MB. With new metadata creation, the maximum possible file size has been increased to 2 GB, while the maximum length of filenames has been increased to 252 bytes. Card,
Remy, the lead developer of the EXT file system, was fascinated by the UFS file system, so some of its related functionality was moved to ext.
Although Linux supports a large number of file systems, the EXT extension is required because it is not built on the Linuxove the Linux kernel.
While EXT overcame various shortcomings of the Minix Sous file device (used at the time in Linux), its main disadvantage is the timestamp. EXT allows only one temporary file tag. For this reason, development of EXT has continued, with improvements and new features constantly being added in later versions.
It has become relatively unpopular only among Linux owners, but also among Android smartphone users. For this reason, Android uses this Ext4 file system by default.
Evolution Of The System File EXT. Version Conversion In History.mentioned
As before, although EXT overcame the limitations of the Minix file system, it had many drawbacks. Usually for this reason, development of ext did not stop and three more versions were added in the future.
Which is better ext3 or Ext4?
Ext4 is functionally very similar to Ext3, but supports larger filesystems, better fragmentation tolerance, higher performance, and better timestamps.
Like the previous Ext2, it was created from scratch by Remy Card. This accounting system was released in January 1993.
The most important innovation is that the data is now written in blocks of the same length. From this it can be seen that the performance of the file system is significantly increased It also allows data blocks to adapt to the increase in the maximum size of each of our stored files. Now it was TB 2 2 instead of GB. Filename 252 was byte.y
But Ext2 had all the new flaws. The biggest problem is the lack of logging. If a new power failure occurred while some files were being written to the file drive, the system was corrupted and recovery was considered quite difficult. Some
What is the difference between ext2 ext3 Ext4 and XFS?
In general, Ext3 and/or Ext4 is better when the package uses only one read/write thread and the non-files are large, while XFS shines when the application uses multiple read/write threads and the files are large.
In some cases, the absence of logging would be a definite plus. For example, ext2 is faster than Ext3. This is why some Ext2s are still in use today. In addition, it is the lack of journaling that reduces reloading on SSDs. This is the main reason why some companies use Ext2 and perform RAID data protection like.
For more information about RAID, see the article “RAID: what is it and how to use it?”
Another thing about the Ext2 file system was high data fragmentation, which resulted in a performance hit. That is, when recording, the file was divided into several parts, which were then also recorded.They were placed in different parts of the disk, as a result, the reading process in each case took longer. The more information is stored on any type of disk, the lower the speed of reading / writing data.
Therefore, most of the development in the ext file circle did not stop at this version, moreover, the next entry, Ext3, was released in November 2001.
The ext3 file system is an improved version of ext2. The information is always written to fixed data blocks of the same size, and the maximum file size to achieve the same size is 2TB.
However, it includes logging technology, which greatly reduces the risk of data loss.
The intent is this: the records system flags all intended changes to the data structure. In the event of a power failure, the system immediately sees the information and the “Journal” so the files are not lost.
- Journal: Most of the file system writes both metadata and user data to this journal, which virtually guarantees successful recovery of the file program in the event of a Power supply. Currently, this method is the most degrading information. system performance.
- Reverse write. The metadata is written to the journal first, and then the information is written to the file system. There should be no metadata or sync points in the file system. This logging step is the fastest because there is no reason to. main However, the disadvantage is that if something happens to the function, you will lose data.
- Ordered logging: The write process is performed in a specific order: first metadata is written to the person’s log, then user data is necessarily written to the file system. After that, the metadata that the files on the hard disk may contain are linked. In the event of a power failure, only those files that were written to the corresponding hard disk at that time “disappear”. The system file structure is effectively corrupted. .
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