Date: Sat, 8 Feb 2014 07:51:36 -0500 From: Aryeh Friedman <aryeh.friedman@gmail.com> To: Adam Vande More <amvandemore@gmail.com> Cc: FreeBSD virtualization <freebsd-virtualization@freebsd.org> Subject: Re: Report of my virtual network lab migrated from virtualbox to bhyve Message-ID: <CAGBxaXk=NxY%2BENmCaW_GmHJCxYDR1-W-41W__xooTjz=ic1UEg@mail.gmail.com> In-Reply-To: <CA%2BtpaK1VEw%2BRMfqLBukaXXADXtW82gC73TzXtiVGhSc9DrN=Qw@mail.gmail.com> References: <CA%2Bq%2BTcqw7uHLV3=DeZF4=i0hbmECkPP-d5-4ReSQqKCV-JaJ=Q@mail.gmail.com> <52F5363D.8040102@freebsd.org> <CA%2Bq%2BTcrZZb5o51F4pvLtxKM%2BNvO6SdVEQk_UMLLYSF8JfK6gpg@mail.gmail.com> <CA%2BtpaK2QCoxRocF7=zY3j9VETM7SJqFSVwpFGC0DuPSgFKJwZA@mail.gmail.com> <CAGBxaXmgzLncYi-5YPamqXD2nYvHi_eMUGQQe3hDmPEdyxd5%2Bw@mail.gmail.com> <CA%2BtpaK1VEw%2BRMfqLBukaXXADXtW82gC73TzXtiVGhSc9DrN=Qw@mail.gmail.com>
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On Sat, Feb 8, 2014 at 7:34 AM, Adam Vande More <amvandemore@gmail.com>wrote: > > On Sat, Feb 8, 2014 at 5:42 AM, Aryeh Friedman <aryeh.friedman@gmail.com>wrote: >> >> bhyve (as far I know) disks must be one solid file (md backed) or a /dev >> block device... therefore it is unlikely the above would work >> > > The reported size would be identical so I don't see what the problem is. > bhyve blindly read/writes into the middle of the file without consulting the filesystem and thus bypassing any things like sparse fill in.... namely all you gain is a few seconds of startup time (matter of fact I think truncate might use sparse allocation [i.e. attempting to read into the middle with guest OS control will result in potentially seeing host data]) -- Aryeh M. Friedman, Lead Developer, http://www.PetiteCloud.org
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