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

[Matthew Seaman]

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 at infracaninophile.co.uk               Kent, CT11 9PW

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