Date: Thu, 12 Jul 2012 13:00:14 -0600 (MDT) From: Warren Block <wblock@wonkity.com> To: Wojciech Puchar <wojtek@wojtek.tensor.gdynia.pl> Cc: Kaya Saman <kayasaman@gmail.com>, miles kuo <miles.kuo@gmail.com>, freebsd-questions@freebsd.org Subject: Re: How to mirror the FreeBSD OS on two disks Message-ID: <alpine.BSF.2.00.1207121253040.47013@wonkity.com> In-Reply-To: <alpine.BSF.2.00.1207122037020.2852@wojtek.tensor.gdynia.pl> References: <CAGpP9XOvVor7HmxDP7SFhc7AFnpSf-s%2BgXbkJsguiAo=xNvnVA@mail.gmail.com> <CAPj0R5L1=HaY1Bf-51FB59J6Q4pX1s4yDbzXoAAWRwei6yqt-A@mail.gmail.com> <alpine.BSF.2.00.1207110702490.76348@wonkity.com> <alpine.BSF.2.00.1207121649080.2235@wojtek.tensor.gdynia.pl> <alpine.BSF.2.00.1207121004560.47013@wonkity.com> <alpine.BSF.2.00.1207121941370.2744@wojtek.tensor.gdynia.pl> <alpine.BSF.2.00.1207121147350.47013@wonkity.com> <alpine.BSF.2.00.1207122037020.2852@wojtek.tensor.gdynia.pl>
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On Thu, 12 Jul 2012, Wojciech Puchar wrote: >>>> If that last block is already part of an MBR partition, the more strict >>>> checking stops booting in 9.0. >>> >>> not making MBR partition would not make problems. >> >> There's no guarantee that bsdlabel checking won't be made more strict. No >> matter what type of partitioning scheme, the metadata should not be >> inside the data area. >> > gmirror puts it's metadata at the end of disk. > bsdlabel is at the beginning. what a problem? It's not the label, it's what the label declares for the partitions. If the last partition includes the block of gmirror metadata, that's an error. Pardon the ASCII diagrams. Wrong: partition table partition 1------- | | ----------------- ... partition n------- | | |gmirror metadata | ----------------- Right: partition table partition 1----- | | --------------- ... partition n----- | | --------------- gmirror metadata | | ---------------
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