From: Alasdair G Kergon <agk@redhat.com>
To: Thanos Makatos <thanos.makatos@onapp.com>
Cc: heinzm@redhat.com,
device-mapper development <dm-devel@redhat.com>,
thornber@redhat.com, Mike Snitzer <snitzer@redhat.com>
Subject: Re: dm-cache suspend semantics
Date: Wed, 19 Aug 2015 19:42:05 +0100 [thread overview]
Message-ID: <20150819184204.GC18567@agk-dp.fab.redhat.com> (raw)
In-Reply-To: <CAM2wQBsvnY+eBMxEFRy07f=16XnYmcdVQOewo-DWBseSnqAR9g@mail.gmail.com>
On Wed, Aug 19, 2015 at 12:26:20PM +0100, Thanos Makatos wrote:
> I'd like to know whether it is possible for a cache target for which
> there are dirty blocks to continue writing back dirty data after it
> has been suspended. Can this happen?
A suspended device-mapper device must not generate any I/O to the
devices underneath it while it is suspended.
Alasdair
prev parent reply other threads:[~2015-08-19 18:42 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-08-19 11:26 dm-cache suspend semantics Thanos Makatos
2015-08-19 18:42 ` Alasdair G Kergon [this message]
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