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From: hch@lst.de (Christoph Hellwig)
Subject: [PATCH 0/3] Provide more fine grained control over multipathing
Date: Fri, 25 May 2018 16:12:11 +0200	[thread overview]
Message-ID: <20180525141211.GA25971@lst.de> (raw)
In-Reply-To: <20180525135813.GB9591@redhat.com>

On Fri, May 25, 2018@09:58:13AM -0400, Mike Snitzer wrote:
> We all basically knew this would be your position.  But at this year's
> LSF we pretty quickly reached consensus that we do in fact need this.
> Except for yourself, Sagi and afaik Martin George: all on the cc were in
> attendance and agreed.

And I very mich disagree, and you'd bette come up with a good reason
to overide me as the author and maintainer of this code.

> And since then we've exchanged mails to refine and test Johannes'
> implementation.

Since when was acting behind the scenes a good argument for anything?

> Hopefully this clarifies things, thanks.

It doesn't.

The whole point we have native multipath in nvme is because dm-multipath
is the wrong architecture (and has been, long predating you, nothing
personal).  And I don't want to be stuck additional decades with this
in nvme.  We allowed a global opt-in to ease the three people in the
world with existing setups to keep using that, but I also said I
won't go any step further.  And I stand to that.

WARNING: multiple messages have this Message-ID (diff)
From: Christoph Hellwig <hch@lst.de>
To: Mike Snitzer <snitzer@redhat.com>
Cc: Christoph Hellwig <hch@lst.de>,
	Johannes Thumshirn <jthumshirn@suse.de>,
	Keith Busch <keith.busch@intel.com>,
	Sagi Grimberg <sagi@grimberg.me>, Hannes Reinecke <hare@suse.de>,
	Laurence Oberman <loberman@redhat.com>,
	Ewan Milne <emilne@redhat.com>,
	James Smart <james.smart@broadcom.com>,
	Linux Kernel Mailinglist <linux-kernel@vger.kernel.org>,
	Linux NVMe Mailinglist <linux-nvme@lists.infradead.org>,
	"Martin K . Petersen" <martin.petersen@oracle.com>,
	Martin George <marting@netapp.com>,
	John Meneghini <John.Meneghini@netapp.com>
Subject: Re: [PATCH 0/3] Provide more fine grained control over multipathing
Date: Fri, 25 May 2018 16:12:11 +0200	[thread overview]
Message-ID: <20180525141211.GA25971@lst.de> (raw)
In-Reply-To: <20180525135813.GB9591@redhat.com>

On Fri, May 25, 2018 at 09:58:13AM -0400, Mike Snitzer wrote:
> We all basically knew this would be your position.  But at this year's
> LSF we pretty quickly reached consensus that we do in fact need this.
> Except for yourself, Sagi and afaik Martin George: all on the cc were in
> attendance and agreed.

And I very mich disagree, and you'd bette come up with a good reason
to overide me as the author and maintainer of this code.

> And since then we've exchanged mails to refine and test Johannes'
> implementation.

Since when was acting behind the scenes a good argument for anything?

> Hopefully this clarifies things, thanks.

It doesn't.

The whole point we have native multipath in nvme is because dm-multipath
is the wrong architecture (and has been, long predating you, nothing
personal).  And I don't want to be stuck additional decades with this
in nvme.  We allowed a global opt-in to ease the three people in the
world with existing setups to keep using that, but I also said I
won't go any step further.  And I stand to that.

  reply	other threads:[~2018-05-25 14:12 UTC|newest]

Thread overview: 104+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-05-25 12:53 [PATCH 0/3] Provide more fine grained control over multipathing Johannes Thumshirn
2018-05-25 12:53 ` Johannes Thumshirn
2018-05-25 12:53 ` [PATCH 1/3] nvme: provide a way to disable nvme mpath per subsystem Johannes Thumshirn
2018-05-25 12:53   ` Johannes Thumshirn
2018-05-25 13:47   ` Mike Snitzer
2018-05-25 13:47     ` Mike Snitzer
2018-05-31  8:17   ` Sagi Grimberg
2018-05-31  8:17     ` Sagi Grimberg
2018-05-25 12:53 ` [PATCH 2/3] nvme multipath: added SUBSYS_ATTR_RW Johannes Thumshirn
2018-05-25 12:53   ` Johannes Thumshirn
2018-05-25 12:53 ` [PATCH 3/3] nvme multipath: add dev_attr_mpath_personality Johannes Thumshirn
2018-05-25 12:53   ` Johannes Thumshirn
2018-05-25 13:05 ` [PATCH 0/3] Provide more fine grained control over multipathing Christoph Hellwig
2018-05-25 13:05   ` Christoph Hellwig
2018-05-25 13:58   ` Mike Snitzer
2018-05-25 13:58     ` Mike Snitzer
2018-05-25 14:12     ` Christoph Hellwig [this message]
2018-05-25 14:12       ` Christoph Hellwig
2018-05-25 14:50       ` Mike Snitzer
2018-05-25 14:50         ` Mike Snitzer
2018-05-29  1:19         ` Martin K. Petersen
2018-05-29  1:19           ` Martin K. Petersen
2018-05-29  3:02           ` Mike Snitzer
2018-05-29  3:02             ` Mike Snitzer
2018-05-29  7:18             ` Hannes Reinecke
2018-05-29  7:18               ` Hannes Reinecke
2018-05-29  7:22             ` Johannes Thumshirn
2018-05-29  7:22               ` Johannes Thumshirn
2018-05-29  8:09               ` Christoph Hellwig
2018-05-29  8:09                 ` Christoph Hellwig
2018-05-29  9:54                 ` Mike Snitzer
2018-05-29  9:54                   ` Mike Snitzer
2018-05-29 23:27                 ` Mike Snitzer
2018-05-29 23:27                   ` Mike Snitzer
2018-05-30 19:05                   ` Jens Axboe
2018-05-30 19:05                     ` Jens Axboe
2018-05-30 19:59                     ` Mike Snitzer
2018-05-30 19:59                       ` Mike Snitzer
2018-06-04  6:19                     ` Hannes Reinecke
2018-06-04  6:19                       ` Hannes Reinecke
2018-06-04  7:18                       ` Johannes Thumshirn
2018-06-04  7:18                         ` Johannes Thumshirn
2018-06-04 12:59                         ` Christoph Hellwig
2018-06-04 12:59                           ` Christoph Hellwig
2018-06-04 13:27                           ` Mike Snitzer
2018-06-04 13:27                             ` Mike Snitzer
2018-05-31  2:42               ` Ming Lei
2018-05-31  2:42                 ` Ming Lei
2018-05-30 21:20     ` Sagi Grimberg
2018-05-30 21:20       ` Sagi Grimberg
2018-05-30 22:02       ` Mike Snitzer
2018-05-30 22:02         ` Mike Snitzer
2018-05-31  8:37         ` Sagi Grimberg
2018-05-31  8:37           ` Sagi Grimberg
2018-05-31 12:37           ` Mike Snitzer
2018-05-31 12:37             ` Mike Snitzer
2018-05-31 16:34             ` Christoph Hellwig
2018-05-31 16:34               ` Christoph Hellwig
2018-06-01  4:11               ` Mike Snitzer
2018-06-01  4:11                 ` Mike Snitzer
2018-05-31 16:36           ` Christoph Hellwig
2018-05-31 16:36             ` Christoph Hellwig
2018-05-31 16:33         ` Christoph Hellwig
2018-05-31 16:33           ` Christoph Hellwig
2018-05-31 18:17           ` Mike Snitzer
2018-05-31 18:17             ` Mike Snitzer
2018-06-01  2:40             ` Martin K. Petersen
2018-06-01  2:40               ` Martin K. Petersen
2018-06-01  4:24               ` Mike Snitzer
2018-06-01  4:24                 ` Mike Snitzer
2018-06-01 14:09                 ` Martin K. Petersen
2018-06-01 14:09                   ` Martin K. Petersen
2018-06-01 15:21                   ` Mike Snitzer
2018-06-01 15:21                     ` Mike Snitzer
2018-06-03 11:00                 ` Sagi Grimberg
2018-06-03 11:00                   ` Sagi Grimberg
2018-06-03 16:06                   ` Mike Snitzer
2018-06-03 16:06                     ` Mike Snitzer
2018-06-04 11:46                     ` Sagi Grimberg
2018-06-04 11:46                       ` Sagi Grimberg
2018-06-04 12:48                       ` Johannes Thumshirn
2018-06-04 12:48                         ` Johannes Thumshirn
2018-05-30 22:44       ` Mike Snitzer
2018-05-30 22:44         ` Mike Snitzer
2018-05-31  8:51         ` Sagi Grimberg
2018-05-31  8:51           ` Sagi Grimberg
2018-05-31 12:41           ` Mike Snitzer
2018-05-31 12:41             ` Mike Snitzer
2018-06-04 21:58       ` Roland Dreier
2018-06-04 21:58         ` Roland Dreier
2018-06-05  4:42         ` Christoph Hellwig
2018-06-05  4:42           ` Christoph Hellwig
2018-06-05 22:57           ` Roland Dreier
2018-06-05 22:57             ` Roland Dreier
2018-06-06  9:51             ` Christoph Hellwig
2018-06-06  9:51               ` Christoph Hellwig
2018-06-06  9:32           ` Sagi Grimberg
2018-06-06  9:32             ` Sagi Grimberg
2018-06-06  9:50             ` Christoph Hellwig
2018-06-06  9:50               ` Christoph Hellwig
2018-05-25 14:22   ` Johannes Thumshirn
2018-05-25 14:22     ` Johannes Thumshirn
2018-05-25 14:30     ` Christoph Hellwig
2018-05-25 14:30       ` Christoph Hellwig

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