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Date:   Mon, 02 Oct 2023 20:48:06 -0400
From:   "Martin K. Petersen" <>
To:     Bart Van Assche <>
Cc:     John Garry <>,,,,,,,,,,,,,,,,,,,
Subject: Re: [PATCH 10/21] block: Add fops atomic write support


> Are there any SCSI devices that we care about that report an ATOMIC
> TRANSFER LENGTH GRANULARITY that is larger than a single logical
> block?


Note that code path used inside a storage device to guarantee atomicity
of an entire I/O may be substantially different from the code path which
only offers an incremental guarantee at a single logical or physical
block level (to the extent that those guarantees are offered at all but
that's a different kettle of fish).

> I'm wondering whether we really have to support such devices.


Martin K. Petersen	Oracle Linux Engineering

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