Date: Wed, 8 Dec 2004 11:30:13 +0000 From: Scott Mitchell <scott+freebsd@fishballoon.org> To: Stijn Hoop <stijn@win.tue.nl>, orville weyrich <weyrich_comp@yahoo.com>, freebsd-questions@freebsd.org Subject: Re: Has anybody EVER successfully recovered VINUM? Message-ID: <20041208113013.GA12830@tuatara.fishballoon.org> In-Reply-To: <20041208105255.GW39558@pcwin002.win.tue.nl> References: <20041208054552.71553.qmail@web50708.mail.yahoo.com> <20041208100905.GA12684@tuatara.fishballoon.org> <20041208105255.GW39558@pcwin002.win.tue.nl>
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On Wed, Dec 08, 2004 at 11:52:55AM +0100, Stijn Hoop wrote: > Scott, your procedure is what I have used, except for: >=20 > On Wed, Dec 08, 2004 at 10:09:05AM +0000, Scott Mitchell wrote: > > 6. Tell vinum to restart the failed subdisk: > >=20 > > # vinum start raid.p0.s0 > >=20 > > 7. Wait ages while the new disk is 'revived'. > >=20 > > I was quite impressed that the volume remained available with users > > accessing it throughout this procedure :-) >=20 > Yes I was too -- however I wasn't as impressed with the fact that I had > parity errors afterwards. Have you run 'vinum checkparity' after these > rebuilds? In my case I suffered data corruption... No, but I haven't seen any evidence of corruption in the ~1 year since the last time I did this, so I guess we got away with it. > AFAIK the only way to guarantee a consistent rebuild is to do it offline = (at > least in 4.x, haven't tested gvinum in 5.x yet). >=20 > > To play it safe you might want to unmount the volume before starting. >=20 > I *have* to. I normally would unmount first if possible, to make the rebuild run faster if nothing else. Guess I'll make sure to do so in future. Scott --=20 =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D Scott Mitchell | PGP Key ID | "Eagles may soar, but weasels Cambridge, England | 0x54B171B9 | don't get sucked into jet engines" scott at fishballoon.org | 0xAA775B8B | -- Anon
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