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Fri, 4 Nov 2022 22:21:26 -0400 (EDT) Date: Sat, 5 Nov 2022 02:21:24 +0000 From: void To: freebsd-fs@freebsd.org Subject: zfs compression on a volume 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-Rspamd-Queue-Id: 4N41T357qWz3WJM X-Spamd-Bar: ----- Authentication-Results: mx1.freebsd.org; dkim=pass header.d=f-m.fm header.s=fm3 header.b=biwuXHSq; dkim=pass header.d=messagingengine.com header.s=fm3 header.b="s mwCTkh"; dmarc=pass (policy=none) header.from=f-m.fm; spf=pass (mx1.freebsd.org: domain of void@f-m.fm designates 66.111.4.26 as permitted sender) smtp.mailfrom=void@f-m.fm X-Spamd-Result: default: False [-5.20 / 15.00]; DWL_DNSWL_LOW(-1.00)[messagingengine.com:dkim]; NEURAL_HAM_LONG(-1.00)[-1.000]; NEURAL_HAM_MEDIUM(-1.00)[-0.999]; NEURAL_HAM_SHORT(-1.00)[-0.999]; 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)[+ip4:66.111.4.26]; RCVD_IN_DNSWL_LOW(-0.10)[66.111.4.26:from]; MIME_GOOD(-0.10)[text/plain]; RWL_MAILSPIKE_GOOD(-0.10)[66.111.4.26:from]; FROM_HAS_DN(0.00)[]; RCVD_VIA_SMTP_AUTH(0.00)[]; PREVIOUSLY_DELIVERED(0.00)[freebsd-fs@freebsd.org]; TO_MATCH_ENVRCPT_ALL(0.00)[]; RCPT_COUNT_ONE(0.00)[1]; ARC_NA(0.00)[]; ASN(0.00)[asn:19151, ipnet:66.111.4.0/24, country:US]; FREEMAIL_ENVFROM(0.00)[f-m.fm]; TO_DN_NONE(0.00)[]; FREEMAIL_FROM(0.00)[f-m.fm]; RCVD_TLS_LAST(0.00)[]; RCVD_COUNT_THREE(0.00)[4]; FROM_EQ_ENVFROM(0.00)[]; DKIM_TRACE(0.00)[f-m.fm:+,messagingengine.com:+]; MIME_TRACE(0.00)[0:+]; MLMMJ_DEST(0.00)[freebsd-fs@freebsd.org] X-ThisMailContainsUnwantedMimeParts: N Hi fs@ If a vm is created in bhyve on a freebsd host, and that vm is zvol-backed, and the guest itself is encrypted with for example lukfs(?) if it's linux, if the zvol compression is set to for example zstd, does the vol get compressed, or are cycles wasted compressing the uncompressible? TIA,