Messages in this thread | | | From | Denis Vlasenko <> | Subject | Re: set blksize of block device | Date | Thu, 28 Oct 2004 09:09:20 +0300 |
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> >> I am learning block device drivers and have a newbie question. Given > >> a block device, is there anyway that I could set its block size? For > >> example, I want to write a block device driver that will work on an > >> existing block device. In this driver, I want block size smaller. > >> (The idea looks confusing but I could explain if anybody is > >> interested :- ) However, typically the block size is 1KB, now I > >> want to set it to 512 or 256. Can I do it?
256 - no way if hardware can do only 512-byte writes.
You need read-modify-write for this. -- vda
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