From nobody Wed Oct 18 12:58:12 2023 X-Original-To: freebsd-fs@mlmmj.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mlmmj.nyi.freebsd.org (Postfix) with ESMTP id 4S9W9j1kyZz4x0kW for ; Wed, 18 Oct 2023 12:58:17 +0000 (UTC) (envelope-from void@f-m.fm) Received: from out4-smtp.messagingengine.com (out4-smtp.messagingengine.com [66.111.4.28]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id 4S9W9h2X0tz4cVP for ; Wed, 18 Oct 2023 12:58:16 +0000 (UTC) (envelope-from void@f-m.fm) Authentication-Results: mx1.freebsd.org; dkim=pass header.d=f-m.fm header.s=fm3 header.b=hZ94zR41; dkim=pass header.d=messagingengine.com header.s=fm3 header.b=l0DUxgYc; spf=pass (mx1.freebsd.org: domain of void@f-m.fm designates 66.111.4.28 as permitted sender) smtp.mailfrom=void@f-m.fm; dmarc=pass (policy=none) header.from=f-m.fm Received: from compute1.internal (compute1.nyi.internal [10.202.2.41]) by mailout.nyi.internal (Postfix) with ESMTP id 3D46A5C02AE for ; Wed, 18 Oct 2023 08:58:15 -0400 (EDT) Received: from mailfrontend1 ([10.202.2.162]) by compute1.internal (MEProxy); Wed, 18 Oct 2023 08:58:15 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=f-m.fm; h=cc :content-type:content-type:date:date:from:from:in-reply-to :message-id:mime-version:reply-to:sender:subject:subject:to:to; s=fm3; t=1697633895; x=1697720295; bh=W+EkuFYClBaNQoTtIU1xDhvu+ DJCIAcEIIj+9QqsZCU=; b=hZ94zR415gvY/RGq6xfIa04bqAtEWfpnz1pADgXTS hVN01rPBxyew/JoBKUGwoJnapuhJK5rKvniA6gTkp/UrKMnQQJleEVHnAKAlyHel 4hDwqZsfmONVwXEE5ZhiKV4MDxPEjgkjzxl1zfMQW+8jDvt69CNCFsoa9VJAlebp rOghWUWY+5bmnPVxiTEgX/1VXSvgDjx8AtUmS3ffxDXBoZGKpkdYfVn8IGgXAZA+ 4NknnAPuEXBfdumLQjvCLAkPwl+G0K4vt0uaKowhqWdLuu0e3nIciR9avlqB8e/0 9wSFqOtD8Ql0bPXZBqNzQ2WIh8UHATxW3lO5Ij7uRBkvg== DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d= messagingengine.com; h=cc:content-type:content-type:date:date :feedback-id:feedback-id:from:from:in-reply-to:message-id :mime-version:reply-to:sender:subject:subject:to:to:x-me-proxy :x-me-proxy:x-me-sender:x-me-sender:x-sasl-enc; s=fm3; t= 1697633895; x=1697720295; bh=W+EkuFYClBaNQoTtIU1xDhvu+DJCIAcEIIj +9QqsZCU=; b=l0DUxgYc6/Si2GoTn0jjgWy1yzevmX/pAUqp3QwYeQtNt6bJ69Y xk+5TtmIjsNwYA5dYORJCfgjGsDwyU5l7lWlU5VzTBZcSgsC+HN52GIxIVwALgaT B7escxVqodQGfDynW4ZFI/xee/PdD6mDuQU9yulPY2jLi2Rk2LR9/gOcLFlMTJ27 w+8kCocIs4t/vAbgCbiqkDM2v1lv7m+2m6WMjs78LjNkl3sM5VB/yM7cy9D7QCF2 VTIEIAlTQXJ6epJEUgifs4wWwgMOn5QoPIcexd8CjIUmvsD1tHFcWZ2ZvJjUDJFn AMoLjPvZL05CieHUeXX1Uw9tx9xBjfBCaWg== X-ME-Sender: X-ME-Received: X-ME-Proxy-Cause: gggruggvucftvghtrhhoucdtuddrgedvkedrjeeggdehjecutefuodetggdotefrodftvf curfhrohhfihhlvgemucfhrghsthforghilhdpqfgfvfdpuffrtefokffrpgfnqfghnecu uegrihhlohhuthemuceftddtnecunecujfgurhepfffhvffukfggtggusehttdertddttd dvnecuhfhrohhmpehvohhiugcuoehvohhiugesfhdqmhdrfhhmqeenucggtffrrghtthgv rhhnpeevudffiedvffffgffhgeefjeefffdtieetheetkeefhfdvfefgtedtueehgeffue enucevlhhushhtvghrufhiiigvpedtnecurfgrrhgrmhepmhgrihhlfhhrohhmpehvohhi ugesfhdqmhdrfhhm X-ME-Proxy: Feedback-ID: i2541463c:Fastmail Received: by mail.messagingengine.com (Postfix) with ESMTPA for ; Wed, 18 Oct 2023 08:58:14 -0400 (EDT) Date: Wed, 18 Oct 2023 13:58:12 +0100 From: void To: freebsd-fs@freebsd.org Subject: free space considerations writing bhyve image to a zvol Message-ID: Mail-Followup-To: freebsd-fs@freebsd.org List-Id: Filesystems List-Archive: https://lists.freebsd.org/archives/freebsd-fs List-Help: List-Post: List-Subscribe: List-Unsubscribe: Sender: owner-freebsd-fs@freebsd.org MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii; format=flowed Content-Disposition: inline X-Spamd-Bar: ---- X-Spamd-Result: default: False [-4.70 / 15.00]; DWL_DNSWL_LOW(-1.00)[messagingengine.com:dkim]; NEURAL_HAM_MEDIUM(-1.00)[-1.000]; NEURAL_HAM_LONG(-1.00)[-1.000]; NEURAL_HAM_SHORT(-1.00)[-0.996]; MID_RHS_NOT_FQDN(0.50)[]; DMARC_POLICY_ALLOW(-0.50)[f-m.fm,none]; R_DKIM_ALLOW(-0.20)[f-m.fm:s=fm3,messagingengine.com:s=fm3]; R_SPF_ALLOW(-0.20)[+ip4:66.111.4.28]; MIME_GOOD(-0.10)[text/plain]; RWL_MAILSPIKE_GOOD(-0.10)[66.111.4.28:from]; RCVD_IN_DNSWL_LOW(-0.10)[66.111.4.28:from]; FROM_HAS_DN(0.00)[]; TO_MATCH_ENVRCPT_ALL(0.00)[]; RCPT_COUNT_ONE(0.00)[1]; PREVIOUSLY_DELIVERED(0.00)[freebsd-fs@freebsd.org]; ARC_NA(0.00)[]; RCVD_TLS_LAST(0.00)[]; ASN(0.00)[asn:19151, ipnet:66.111.4.0/24, country:US]; RCVD_COUNT_THREE(0.00)[3]; TO_DN_NONE(0.00)[]; FREEMAIL_FROM(0.00)[f-m.fm]; MLMMJ_DEST(0.00)[freebsd-fs@freebsd.org]; DKIM_TRACE(0.00)[f-m.fm:+,messagingengine.com:+]; MIME_TRACE(0.00)[0:+]; FROM_EQ_ENVFROM(0.00)[]; FREEMAIL_ENVFROM(0.00)[f-m.fm]; RCVD_VIA_SMTP_AUTH(0.00)[] X-Rspamd-Queue-Id: 4S9W9h2X0tz4cVP A linux file-backed vm was created initially like this: truncate -s 2T linuxvm.img Within the vm, df -h reports 1.1Tb used in total. Externally, on the freebsd host, the linuxvm.img is 2Tb. If i write the vm to a 1.6Tb zvol with compression set (lz4), would it be feasible to expect the vm to work? I expect it might break the vm's filesystem internally, now, thinking about it. --