Date: Mon, 21 Jan 2008 20:55:27 -0500 From: Jason Morgan <jwm-freebsd-questions@sentinelchicken.net> To: Jeff Pflueger <jeff@wildernessfringe.com> Cc: freebsd-questions@freebsd.org Subject: Re: gmirror challenge Message-ID: <20080122015527.GB74899@sentinelchicken.net> In-Reply-To: <47954872.3050200@wildernessfringe.com> References: <47952D9C.8040703@wildernessfringe.com> <20080122010533.GA74899@sentinelchicken.net> <47954872.3050200@wildernessfringe.com>
next in thread | previous in thread | raw e-mail | index | archive | help
On Mon, Jan 21, 2008 at 05:35:46PM -0800, Jeff Pflueger wrote: > > > Hey Jeff, > > > > Try: > > > > gmirror forget ad6s1 > > > > >From gmirror(8): > > > > remove Remove the given component(s) from the mirror and clear meta- > > data on it. > > > > and futher on: > > > > One disk failed. Replace it with a brand new one: > > > > gmirror forget data > > gmirror insert data da1 > > > > > > I had a drive do something similar --- the system wouldn't crash, but > > a drive just refused to be rebuilt. I used `forget' and it worked like > > a charm. > > > > ~Jason > > > Thanks for that! > turns out that if I rebuild a mirror once booted from cd via: > gmirror label -v -b load gm0s1 /dev/ad4s1 > mount /dev/mirror/gm0s1 /mnt > > then I disconnected ad6 and booted from ad4. Once booted, the disk was > very busy for a long time and now it seems to be working fine. > > However, ad6... > when I have booted from CD I can't gmirror clean ad6 without getting the > message about > > "Can't clear metadata on ad6s1: Invalid argument. Not fully done." > > I suspect that something is either mechanically wrong (less likely) or somehow corrupted on ad6... > > How can I wipe ad6 so that I can now try to insert it into the new mirror? To completely wipe the drive? Try: # dd if=/dev/zero of=/dev/ad6 bs=512 That will zero out the *whole* drive, nothing will be left. You will also need to make sure you do # gmirror forget ad6 first; otherwise, I think gmirror will expect to find metadata on the drive. Read the man page carefully to make sure you are taking the steps in the right order. Good luck, ~Jason
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?20080122015527.GB74899>