Date: Sun, 14 Apr 2019 13:30:58 -0400 From: Allan Jude <allanjude@freebsd.org> To: freebsd-virtualization@freebsd.org Subject: Re: zvol vs sparse-zvol vs file Message-ID: <bfd39c20-b0f1-6ecd-6e5b-42e174536311@freebsd.org> In-Reply-To: <20190414161938.GA92197@admin.sibptus.ru> References: <20190414161938.GA92197@admin.sibptus.ru>
next in thread | previous in thread | raw e-mail | index | archive | help
This is an OpenPGP/MIME signed message (RFC 4880 and 3156) --6ar20oHh8PykkkN6IoQhvNw8NTgEjE49D Content-Type: multipart/mixed; boundary="LeEUTf1GdtwDcUk3uffCtu9xICdmDGcTg"; protected-headers="v1" From: Allan Jude <allanjude@freebsd.org> To: freebsd-virtualization@freebsd.org Message-ID: <bfd39c20-b0f1-6ecd-6e5b-42e174536311@freebsd.org> Subject: Re: zvol vs sparse-zvol vs file References: <20190414161938.GA92197@admin.sibptus.ru> In-Reply-To: <20190414161938.GA92197@admin.sibptus.ru> --LeEUTf1GdtwDcUk3uffCtu9xICdmDGcTg Content-Type: text/plain; charset=windows-1252 Content-Language: en-US Content-Transfer-Encoding: quoted-printable On 2019-04-14 12:19, Victor Sudakov wrote: > Dear Colleagues, >=20 > Is there any difference in guest performance between zvol, sparse-zvol = and file backends? >=20 File backed VM images will have more overhead since you use the VFS layer and the filesystem, rather than just raw block storage. There isn't really any difference between a zvol and a thin-provisioned zvol, unless you run out of space (if you over-provision). --=20 Allan Jude --LeEUTf1GdtwDcUk3uffCtu9xICdmDGcTg-- --6ar20oHh8PykkkN6IoQhvNw8NTgEjE49D Content-Type: application/pgp-signature; name="signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="signature.asc" -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.22 (MingW32) iQIcBAEBAgAGBQJcs25YAAoJEBmVNT4SmAt+aVgP/R71aIJ6/LKTWtgxzfT18wgp uS4ovgwyFPkpGkGLl8Y2clChru24Q+jfeAcgEcgOLMUfVEvz2DQxoojrAB+WEZMj A8XwN/0DkPCNmIbNZ8QgsCzDp1nV55D1LcmCBibCRGwjbEvyw1LP3HQzz9N/ub0L ASqRTRubG2Bvf2ZhxF90VFkAIK1pPBJdLJAuqr4rPhQ1bx8run9yiIg6zbglVBkx SuzF5CwLL4urYviOLHKyEhJE0msOPh76yBtOid5AyZa6iQtPpuvqLh8l0WZnebKZ 32mkMpZueu9omrcE9msfEKJAzSTROVoup7UneQZQoGiFFw7G++puj5FGkZu9XT3j 9+iPV6Da4GW2vWsH6cJ4U1XSXUagtcUkVee4wUKdWyzb6VaJUW4b8LqpD3X0WSpD 7nD044hW9bLaSDbGzwleJ3/VCtECSUwTLGYeUWlEpS9fu02CdUP2MZ7TG4xeOjGJ PJJDDpGy1YjgFmtJH6y0sQ3g4k9HIn1L1e7SvSGpgyLpuesq69hHPoPQ7Oe+nYwV FS4WcReoH7ENgXahElveHWxYgu4Z3aYE0/vV8IDxAdLSkVfyrmndX786hel6EnFK s4yFDasj8KLe7eh6yHYGe4rKNPUWiA0NvK76NGboCAqODx3eKhvlt7/bYxZCD3IM j5R3HQj7lLYvjRfSC/KK =dZ6F -----END PGP SIGNATURE----- --6ar20oHh8PykkkN6IoQhvNw8NTgEjE49D--
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?bfd39c20-b0f1-6ecd-6e5b-42e174536311>