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Alex Rivera
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I have a script that creates file system in a file on a linux machine. I see that to create the file system, it uses 'dd' with bs=x option, reads from /dev/zero and writes to a file. I think usually specifying ibs/obs/bs is useful to read from real hardware devices as one has specific block size constraints. In this case however, as it is reading from virtual device and writing to a file, I don't see any point behind using 'bs=x bytes' option. Is my understanding wrong here? (Just in case if it helps, this file system is later on used to boot a qemu vm)
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