linux-kernel - Re: remove exofs, the T10 OSD code and block/scsi bidi support V4

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Date:   Tue, 5 Feb 2019 18:16:28 +0100
From:   Christoph Hellwig <hch@....de>
To:     Boaz Harrosh <ooo@...ctrozaur.com>
Cc:     Christoph Hellwig <hch@....de>, axboe@...nel.dk,
        martin.petersen@...cle.com,
        Johannes Thumshirn <jthumshirn@...e.de>,
        Benjamin Block <bblock@...ux.vnet.ibm.com>,
        linux-scsi@...r.kernel.org, linux-block@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: remove exofs, the T10 OSD code and block/scsi bidi support V4

On Mon, Feb 04, 2019 at 10:31:39PM +0200, Boaz Harrosh wrote:
> On 01/02/19 09:55, Christoph Hellwig wrote:
> > The only real user of the T10 OSD protocol, the pNFS object layout
> > driver never went to the point of having shipping products, and we
> > removed it 1.5 years ago.  Exofs is just a simple example without
> > real life users.
> > 
> > The code has been mostly unmaintained for years and is getting in the
> > way of block / SCSI changes, 
> 
> For the 4th time: Which ?

Speeding up the I/O path for example.  Making sense of SCSI
command allocation for another.  Having to deal with sense data
handling for the duplicate scsi command allocation as a third.