Thanks,
I was wondering if "." could change in some way the content of the two buffers. Since it's string concatenation operator, I was worried that some sort of "stringification" of the two buffers could change them some way (this is why I asked if there's a way to concat two binary buffers). I am still not sure about this.
Regarding the size of the read data: I am actually trying to put back together some stripes from a dead raid array, so if I am not able to read exactly $bufsize bytes I'd better die away asap :)
Thanks a lot!
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