Date: Thu, 08 Jul 2010 17:59:48 +1000 From: Andrew Snow <andrew@modulus.org> To: Simun Mikecin <numisemis@yahoo.com>, freebsd-fs@freebsd.org Subject: Re: Freebsd 8 Release /usr Die After host VMWARE Crash Message-ID: <4C358574.2040009@modulus.org> In-Reply-To: <688583.92527.qm@web112402.mail.gq1.yahoo.com> References: <AANLkTiknH3e0X5lu30azKWguKkgbH_-3pOLQKXinCDPs@mail.gmail.com> <AANLkTilN4EA6hYYRwbPggAdz6O6iPjA_5Em5SU8hXTlC@mail.gmail.com> <4C3563A8.7060301@modulus.org> <688583.92527.qm@web112402.mail.gq1.yahoo.com>
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On 08/07/10 17:45, Simun Mikecin wrote: > AFAIK virtual environments ignore disk sync requests by default. For example, in > VirtualBox they are ignored by default, by you could enable it if you want (with > a performance penalty). Haven't used VMWare, so not 100% sure about it, maybe > someone more knowledgable with VMWare knows what it's defaults are. VMware vSphere/ESX/ESXi makes all writes synchronous. (It is terribly slow on RAID cards that lack battery-backed cache!) - Andrew
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