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From: Lorenzo Perone <lopez.on.the.lists@yellowspace.net>
To: Pawel Jakub Dawidek <pjd@FreeBSD.org>
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Date: Tue, 30 Jun 2009 17:19:52 +0200
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Cc: freebsd-current@freebsd.org, freebsd-questions@freebsd.org
Subject: Re: gmirror gm0 destroyed on shutdown; GPT corrupt
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Hi,

> On 28.06.2009, at 10:49, Pawel Jakub Dawidek wrote:
>
>> .... I for one never put mirror on
>> already partitioned disk. Although it is sometimes safe to use the  
>> last
>> sector.  Gjournal already looks for UFS and if UFS is in place, it
>> figures out if the last sector is in use - it isn't if partition  
>> size is
>> not multiple of UFS block size.
>>


does this actually also mean that gmirror used on a partition
(eg mirroring two partitions of two different disks) is
not recommended and is going to write its metadata always
on the last sector of the disk, instead of the last sector of
the partition?

regards,

Lorenzo