Re: locking sectors of raw disk (raw read-write test of mounted disk)

[Phillip Susi]

No, you can not tamper with the underlying data while the kernel has it 
mounted.

Yakov Lerner wrote:
> I'd like to make read-write test of the raw disk, and disk has
> mounted partitions. Is it possible to lock  range of sectors
> of the raw device so that any kernel code that wants to write
> to this range will sleep ? (so that test
>    { lock range; read /dev/hda->buf; write buf->/dev/hda; unlock }
> won't corrupt the filesysyem ?)
>
> Thanks
> Yakov

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