Point Software AG - LINUX FILESYSTEMS, PART 4 – EXT4 VS. EXT3 AND WHY DELAYED ALLOCATION IS BAD
It covers the main differences between ext3 and ext4 with a focus on filesystem consistency. This article was the initial motivation of this blog series, because many engineers are unaware that the standard option of ext4 (delalloc) is dangerous for their data! 4.1 Main differences Ext3 was available since 2001 with Linux Kernel 2.4.15 and extended ext2 with journalling to avoid filesystem corrupt
That massive filesystem thread - LWN.net
Long, highly-technical, and animated discussion threads are certainly not unheard of on the linux-kernel mailing list. Even by linux-kernel standards, though, the thread that followed the 2.6.29 announcement was impressive. Over the course of hundreds of messages, kernel developers argued about several aspects of how filesystems and block I/O work on contemporary Linux systems. In the end (your ed
ext4 and data loss [LWN.net]
The ext4 filesystem offers a number of useful features. It has been stabilizing quickly, but that does not mean that it will work perfectly for everybody. Consider this example: Ubuntu's bug tracker contains an entry titled "ext4 data loss", wherein a luckless ext4 user reports: Today, I was experimenting with some BIOS settings that made the system crash right after loading the desktop. After a c
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ext4 and data consistency [LWN.net]
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