Date: Mon, 23 Jan 2012 21:46:43 +0000 From: Matthew Seaman <m.seaman@infracaninophile.co.uk> To: Steven Hartland <killing@multiplay.co.uk> Cc: Olivier Smedts <olivier@gid0.org>, freebsd-stable@freebsd.org Subject: Re: ZFS: i/o error - all block copies unavailable on large disk number machines Message-ID: <4F1DD543.9070801@infracaninophile.co.uk> In-Reply-To: <8270FFAE3BF447C380F5A414FFA9A9D2@multiplay.co.uk> References: <520B9285BCC0498286196195933D67E9@multiplay.co.uk><CB4ED392-3DED-40C1-83B0-7DB3B9C612C0@mac.com><4F1DA991.1060601@infracaninophile.co.uk><7F1E17105173440B8C52DB9AAFA7A400@multiplay.co.uk><4F1DBA47.8080504@infracaninophile.co.uk> <CABzXLYNhiQJsMhFAsHorwpifDX1f_n5EhCL2yhQySg=QuksnvQ@mail.gmail.com> <8270FFAE3BF447C380F5A414FFA9A9D2@multiplay.co.uk>
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This is an OpenPGP/MIME signed message (RFC 2440 and 3156) --------------enig15F8B5E7B48D6B45583799A5 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable On 23/01/2012 20:47, Steven Hartland wrote: >>> In my case, I fixed it by having a separate /boot on some USB sticks = -- >>> this was only ever accessed to read the kernel, kernel modules and >>> bootloader at boot time, so no worries over performance. >=20 > Out of interest whats the procedure you used for that Matthew? >=20 It was basically this: http://wiki.freebsd.org/RootOnZFS/UFSBoot but I already had a system installed on the ZFS, so Section 2 of that was pretty much a no-op for me. I built the USB sticks offline, then went into the datacenter with them to revive that server. I can't remember now whether I just had two bootable USB sticks -- one to use, and one as a spare -- or whether I'd made a gmirror from the two. Seeing as they were something like =A38 apiece having several on hand was easily justifiable. Cheers, Matthew --=20 Dr Matthew J Seaman MA, D.Phil. 7 Priory Courtyard Flat 3 PGP: http://www.infracaninophile.co.uk/pgpkey Ramsgate JID: matthew@infracaninophile.co.uk Kent, CT11 9PW --------------enig15F8B5E7B48D6B45583799A5 Content-Type: application/pgp-signature; name="signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="signature.asc" -----BEGIN PGP SIGNATURE----- Version: GnuPG/MacGPG2 v2.0.16 (Darwin) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/ iEYEARECAAYFAk8d1UkACgkQ8Mjk52CukIxEEACffm88ugRxDzIW4mzbClD6Jk08 +oAAoJJ/0ksvfFFHqJv6UyLHErEpuYa0 =VSxo -----END PGP SIGNATURE----- --------------enig15F8B5E7B48D6B45583799A5--
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