Re: Random bit flips - better data integrity needed

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>>>>> "Mario" == Mario 'BitKoenig' Holbe <Mario.Holbe@xxxxxxxxxxxxx> writes:

>> With regards to data storage, one major step in this direction is the
>> "integrity" patch that went into the kernel last winter (2.6.28?).

Mario> That's far from being end-to-end. Actually, it is even against
Mario> the end-to-end argument. End-to-end means from application to
Mario> application.

Oracle has a custom (as in non-POSIX) async I/O submission interface
called oracleasm.  Hooking into my Linux kernel block integrity
infrastructure I can protect the I/O all the way from within the Oracle
DB context in userland to the drive firmware and back.

We're working on a generic (as in POSIX-like) interface that allows data
integrity passthrough for normal applications.

-- 
Martin K. Petersen	Oracle Linux Engineering
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