Date: Wed, 18 Oct 2023 14:50:52 +0100 From: void <void@f-m.fm> To: freebsd-fs@freebsd.org Subject: Re: free space considerations writing bhyve image to a zvol Message-ID: <ZS_ivB48NWpD1D8s@int21h> In-Reply-To: <1733602178.6691.1697636557003@localhost> References: <ZS_WZD-JlHEo_Em5@int21h> <1733602178.6691.1697636557003@localhost>
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On Wed, Oct 18, 2023 at 03:42:37PM +0200, Ronald Klop wrote: >You can test how much it will compress your linuxvm.img. > >$ [/tmp] ls -l ./bla.txt >-rw------- 1 ronald wheel 5242880 Oct 18 15:39 ./bla.txt > >$ [/tmp] lz4 -c ./bla.txt | wc -c > 20604 > > >So do "lz4 -c linuxvm.img | wc -c" and it will print about the size of the zvol you need. thanks for that. I'm concerned about wrecking the linux vm's filesystem internally in this process though. I know it's easier to expand than contract; what i don't know is the detail >NB: What keeps you from just trying to write it to the zvol and see if it works? downtime & space considerations on the system. And curious if people have tried similar, and if they can recall the results. Searching hasn't come up with a near-enough matching context. --
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