From owner-freebsd-virtualization@freebsd.org Wed Jul 15 14:11:23 2020 Return-Path: Delivered-To: freebsd-virtualization@mailman.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.nyi.freebsd.org (Postfix) with ESMTP id 9B7643671CE for ; Wed, 15 Jul 2020 14:11:23 +0000 (UTC) (envelope-from simond@irrelevant.org) Received: from mail-qt1-x834.google.com (mail-qt1-x834.google.com [IPv6:2607:f8b0:4864:20::834]) (using TLSv1.3 with cipher TLS_AES_128_GCM_SHA256 (128/128 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256 client-signature RSA-PSS (2048 bits) client-digest SHA256) (Client CN "smtp.gmail.com", Issuer "GTS CA 1O1" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4B6K7F1CjPz4gCR for ; Wed, 15 Jul 2020 14:11:20 +0000 (UTC) (envelope-from simond@irrelevant.org) Received: by mail-qt1-x834.google.com with SMTP id j10so1726722qtq.11 for ; Wed, 15 Jul 2020 07:11:20 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=irrelevant.org; s=irrelevant; h=mime-version:references:in-reply-to:from:date:message-id:subject:to; bh=0UPwfDkvc31KWDjHfOaKi4jhu4n6lzq+tyiJovwnfAc=; b=PFyidLMo2WjNrrIjJMky6FpMihhScsEsjGA/T4QY4XjESpt1Y4W87wNWoNFWNy2OqL MsPLNRH2kkCplAG788i6NiWCygB37wnJaQtOmMFTgMLQFnrsCR8vrU6Kdk8Msp7PbOn1 pMMGkw7vTE0MIwv6H7tNbCMaj0XT3NnXAsfgw= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to; bh=0UPwfDkvc31KWDjHfOaKi4jhu4n6lzq+tyiJovwnfAc=; b=F7SokR+9hFtA12aGel/eCRL5wPJSREUrIdfS6Nk3VzbrsYRHQExg3v7kgzFQsS/TFh IfbQs2chDoaaN+I0g9hlf9XlGjXDKaoP9TVV+WDjE1smdKjTPMkD99Hv0mZLTU78mWM1 GIh92crBlFRuB8bZsu/hMjiz9s1x00xJvnXxNoHOP0mgC3DeER8c+rUCmXvfwede0m1l xD1KQJsyux6VKHZVXYab37kqsx7e7dA4naVS5WcglPyThcuO+/OZ3etwdpXFu3LoS440 4ing/u6JveRP++0+n1AO0z0RC5gXm46FhiSfbMOEjVAAj+7bJIdJPKVKS0wO1UikL9WT M1ZA== X-Gm-Message-State: AOAM530e5B5joEhM+JwvoeFzxYWwL3MbETCy9guFpfj9pylslOMKPizo KOcwFzFc2lpKh4SHDSseI1M09ZhBOZQd0baLQUNJrWRu2MQ= X-Google-Smtp-Source: ABdhPJyHn19SYf0ZBOIOorFwCBa2wEfc+NWtqlpFIgal4a6HEQrCbzKOtKo5Xw30B07LOmacdSHSKehSLKY6xtkMUxI= X-Received: by 2002:aed:2b82:: with SMTP id e2mr10526237qtd.143.1594822279173; Wed, 15 Jul 2020 07:11:19 -0700 (PDT) MIME-Version: 1.0 References: <20200715140444.GA72748@bastion.zyxst.net> In-Reply-To: <20200715140444.GA72748@bastion.zyxst.net> From: Simon Dick Date: Wed, 15 Jul 2020 15:11:07 +0100 Message-ID: Subject: Re: zfs compression of a volume To: freebsd-questions@freebsd.org, freebsd-virtualization@freebsd.org Content-Type: text/plain; charset="UTF-8" X-Rspamd-Queue-Id: 4B6K7F1CjPz4gCR X-Spamd-Bar: -- Authentication-Results: mx1.freebsd.org; dkim=pass header.d=irrelevant.org header.s=irrelevant header.b=PFyidLMo; dmarc=none; spf=pass (mx1.freebsd.org: domain of simond@irrelevant.org designates 2607:f8b0:4864:20::834 as permitted sender) smtp.mailfrom=simond@irrelevant.org X-Spamd-Result: default: False [-2.57 / 15.00]; ARC_NA(0.00)[]; NEURAL_HAM_MEDIUM(-1.03)[-1.028]; R_DKIM_ALLOW(-0.20)[irrelevant.org:s=irrelevant]; FROM_HAS_DN(0.00)[]; R_SPF_ALLOW(-0.20)[+ip6:2607:f8b0:4000::/36]; NEURAL_HAM_LONG(-1.02)[-1.022]; MIME_GOOD(-0.10)[text/plain]; PREVIOUSLY_DELIVERED(0.00)[freebsd-virtualization@freebsd.org]; TO_DN_NONE(0.00)[]; DMARC_NA(0.00)[irrelevant.org]; TO_MATCH_ENVRCPT_SOME(0.00)[]; DKIM_TRACE(0.00)[irrelevant.org:+]; RCPT_COUNT_TWO(0.00)[2]; RCVD_IN_DNSWL_NONE(0.00)[2607:f8b0:4864:20::834:from]; NEURAL_HAM_SHORT(-0.02)[-0.020]; FROM_EQ_ENVFROM(0.00)[]; MIME_TRACE(0.00)[0:+]; ASN(0.00)[asn:15169, ipnet:2607:f8b0::/32, country:US]; RCVD_COUNT_TWO(0.00)[2]; RCVD_TLS_ALL(0.00)[] X-BeenThere: freebsd-virtualization@freebsd.org X-Mailman-Version: 2.1.33 Precedence: list List-Id: "Discussion of various virtualization techniques FreeBSD supports." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 15 Jul 2020 14:11:23 -0000 It'll just be any changes made to it On Wed, 15 Jul 2020 at 15:05, tech-lists wrote: > > Hi, > > If a zfs-backed bhyve instance is created, and compression is not set, if the > instance is turned off, then compression set on the host for the volume (and > then the bhyve instance is started), is the instance compressed in its > entirety at that time, or just data subsequently added to it? > > thanks, > -- > J.