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5

fallocate -l 50G big_file truncate -s 50G big_file dd of=bigfile bs=1 seek=50G count=0 As those three ways can all fill up a partition quickly. If you like use dd, usually you can try it with seek. Just set seek=file_size_what_you_need and set count=0. That will tell the system there is a file, and its size is what you set, but the system will not create ...


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Other alternatives include: to change the alarm thresholds to something near or below the current usage, or to create a very small test partition with limited inodes, size, or other attributes. Being able to test things such as running into the root reserved percentage, if any, may also be handy.


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The fastest way to create a file in a Linux system is fallocate: fallocate -l 50G file From man: fallocate is used to manipulate the allocated disk space for a file, either to deallocate or preallocate it. For filesystems which support the fallocate system call, preallocation is done quickly by allocating blocks ...



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