Date: Wed, 9 Feb 2022 02:10:50 +0000 From: tech-lists <tech-lists@zyxst.net> To: freebsd-questions@freebsd.org Subject: general zfs/zvol question Message-ID: <YgMiqoFU5SapPf17@cloud9.zyxst.net>
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--UKhNufMhCrntTKhH Content-Type: text/plain; charset=us-ascii; format=flowed Content-Disposition: inline Content-Transfer-Encoding: quoted-printable Hello experts, What would you think would run faster, all else being equal: 1. a freebsd vm, the image being file-backed (i.e. the empty vm image=20 initially created with say "truncate -s 64g freebsdvm.img) on a freebsd=20 zfs filesystem on the host, and the installed filesystem on the guest=20 being UFS, or 2. a freebsd vm, the image being zfs-backed (ie a zvol) and the installed= =20 filesystem on the guest being UFS, or 3. the same as example 2, the guest filesystem being zfs? for context this is recent stable/13, so OpenZFS, and the guest vm would=20 have 4*vCPU and 16GB vRAM I *think* example #2 would be fastest, if the underlying zfs vol was also= =20 using zstd compression. But I'm only guessing, and it's not a qualified guess. I'm wondering if anyone has done this and what their impressions wer= e. thanks, --=20 J. --UKhNufMhCrntTKhH Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQIzBAABCAAdFiEE8n3tWhxW11Ccvv9/s8o7QhFzNAUFAmIDIp4ACgkQs8o7QhFz NAWABw/9HOzg6QvQ+foOFXqkeRw4qr0ZQDkCQT+ubTSiHG9NBOmDkL5GmsYn3odt 348UeppNyuaQiKo3cU95eY56zadXSqZLuoNT0LTBlQYFXc+dPMmY1ugVQPs++NFP fmsLsGRDCXGy1Aw692LOH5eHcOu6QIh4EoR7JNLW7KZG7Q1Ep7xk07jNfUroBpay tVuVRIVnedA547kX0+SFEA/SE8n/V00Wg5wh5N18sxo5p7fz/jS6iXFyUBrXb0DS PwEQgb47uc+h22p17ce0ac+9tqJBs4jCxXCTa7FuYGefQa99zqcTMOsnbMP/B1Ch QoVh1SuL2FevbWr2WGkxusuHENMd8DemSj5e9wfkB0TT9ENNRNFZwHOL4tTUeEMB BYoeruUcCDz03l0q9y2K+AFrCy+xLcxzQlLlPZ5IwtH7ioiyIbCDZRlI68ex61H6 Z7Ng09ODv/jeH80Vv8H09Tmquer74Oe/B29NmvjvZ0akH//iVreJjV5M6Zk4xzo3 5aMk3WQO3+cxm7dqnOA+dT/B1Hzn69hteOd/A1C2pyTKodfUROnL4WPvkzUqkIaF fOzEpFzol+3LzBXnehiPEFWxngAUppxCfacYdvmVmo4QVYV35Y8SVhTEFNgoPrjk 6dhtIh/tUxz5XzQATqCkXpFmrs31y49SxFrKCJGSyxppeeVB95M= =Zc7Y -----END PGP SIGNATURE----- --UKhNufMhCrntTKhH--
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