From: Mikulas Patocka <mpatocka@redhat.com>
To: Jeff Moyer <jmoyer@redhat.com>
Cc: Jan Kara <jack@suse.cz>, Mike Snitzer <snitzer@redhat.com>,
"linux-nvdimm@lists.01.org" <linux-nvdimm@lists.01.org>,
"dm-devel@redhat.com" <dm-devel@redhat.com>,
"linux-fsdevel@vger.kernel.org" <linux-fsdevel@vger.kernel.org>
Subject: Re: Snapshot target and DAX-capable devices
Date: Thu, 30 Aug 2018 15:47:32 -0400 (EDT) [thread overview]
Message-ID: <alpine.LRH.2.02.1808301545200.30950@file01.intranet.prod.int.rdu2.redhat.com> (raw)
In-Reply-To: <x494lfbabwi.fsf@segfault.boston.devel.redhat.com>
On Thu, 30 Aug 2018, Jeff Moyer wrote:
> Mike Snitzer <snitzer@redhat.com> writes:
>
> > Until we properly add DAX support to dm-snapshot I'm afraid we really do
> > need to tolerate this "regression". Since reality is the original
> > support for snapshot of a DAX DM device never worked in a robust way.
>
> Agreed.
>
> -Jeff
You can't support dax on snapshot - if someone maps a block and the block
needs to be moved, then what?
Mikulas
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next prev parent reply other threads:[~2018-08-30 19:47 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-08-27 16:07 Snapshot target and DAX-capable devices Jan Kara
2018-08-27 16:43 ` Kani, Toshi
2018-08-28 7:50 ` Jan Kara
2018-08-28 17:56 ` Mike Snitzer
2018-08-28 22:38 ` Kani, Toshi
2018-08-30 9:30 ` Jan Kara
2018-08-30 18:49 ` Mike Snitzer
2018-08-30 19:32 ` Jeff Moyer
2018-08-30 19:47 ` Mikulas Patocka [this message]
2018-08-30 19:53 ` Jeff Moyer
2018-08-30 23:38 ` Dave Chinner
2018-08-31 9:42 ` Jan Kara
2018-09-05 1:25 ` Dave Chinner
2018-12-12 16:11 ` Huaisheng Ye
2018-12-12 16:12 ` Christoph Hellwig
2018-12-12 17:50 ` Mike Snitzer
2018-12-12 19:49 ` Kani, Toshi
2018-12-12 21:15 ` Theodore Y. Ts'o
2018-12-12 22:43 ` Mike Snitzer
2018-12-14 4:11 ` [dm-devel] " Theodore Y. Ts'o
2018-12-14 8:24 ` [External] " Huaisheng HS1 Ye
2018-12-18 19:49 ` Mike Snitzer
2018-08-30 19:44 ` Mikulas Patocka
2018-08-31 10:01 ` Jan Kara
2018-08-30 22:55 ` Dave Chinner
2018-08-31 9:54 ` Jan Kara
2018-08-30 19:17 ` [dm-devel] " Jeff Moyer
2018-08-31 9:14 ` Jan Kara
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