Format partition with ext4 but without a journal

mke2fs -t ext4 -O ^has_journal /dev/sdXN

For slow flash memory (cheap thumb drive), ext4 is the fastest stable file system for all use cases with no relevant exception: http://www.linuxplanet.com/linuxplanet/tutorials/7208/1 Since we can usually dispense with the benefits of a journal for this type of storage, this is a way to achieve the least awful I/O-speed. Disabling the journal for an existing ext4 partition can be achieved using tune2fs -O ^has_journal /dev/sdXN Note that it is often recommended to format removable flash media with ext2, due to the lack of a journal. ext4 has many advantages over ext2 even without the journal, with much better speed as one of the consequences. So the only usecase for ext2 would be compatibility with very old software.

By: michelsberg

2013-02-15 17:24:02

mke2fs flash storage ext3 ext4 format tune2fs ext2 thumb drive journal has_journal mke2fs

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