Date: Mon, 26 Mar 2007 15:07:39 +0200 From: Volker <volker@vwsoft.com> To: Joe Kelsey <joe@zircon.seattle.wa.us> Cc: stable@freebsd.org Subject: Re: gmirror Issues Message-ID: <4607C59B.6000901@vwsoft.com> In-Reply-To: <4606E163.9000506@zircon.seattle.wa.us> References: <4606E163.9000506@zircon.seattle.wa.us>
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On 12/23/-58 20:59, Joe Kelsey wrote: > I am having a real hard time with gmirror. > I recently bought two new 400G SATA disks and I want to mirror them. I > think I am following the directions, but I am not sure. > > I generally do the following steps: > > edit /boot/loader.conf to add geom_mirror_load. > reboot into single-user > gmirror label -v -b round-robin gm0 ad4s1 ad6s1 > bsdlabel -w mirror/gm0 > bsdlabel -e mirror/gm0 > newfs mirror/gm0a Joe, check what `bsdlabel mirror/gm0' gives right after editing the partitioning information and re-check that info after a reboot. There might be an issue... Check if bsdlabel complains about partition c not being sized well. Could you please try to `gmirror unload' before doing anything and a `gmirror load' right after labeling the mirror? Or just try a reboot after labeling the mirror. If that does make a difference, it's a sign I've been right with my last week's experience. If you're still getting into trouble, you may want to zero out the first sectors of the disk using `dd'. When creating a 400 gig mirror, it will take a long time for the mirror to complete and you're mirroring waste in the first step. I would recommend to create the mirror with just one consumer, create the partitions, newfs and then insert the 2nd consumer into the mirror. Just to make sure, I would check the status of the mirror using `gmirror status' and wait until its state is COMPLETE before doing anything else. BTW, do you really want to use a dangerously dedicated disk (by using gm0X) without any slices? HTH, Volker
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