Re: ZFS: i/o error - all block copies unavailable on large disk number machines

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From
Matthew Seaman <m.seaman@infracaninophile.co.uk>
Date
23 Jan 2012 21:46:58
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
Steven Hartland
References to
Steven Hartland, Chuck Swiger, Matthew Seaman, Steven Hartland, Matthew Seaman, Olivier Smedts, Steven Hartland

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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.
>
> Out of interest whats the procedure you used for that Matthew?
>
 
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 8
apiece having several on hand was easily justifiable.
 
	Cheers,
 
	Matthew
 
 
--
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
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