Hi Eric, everyone,

Eric Schrock wrote:
> There have been many improvements in proactively detecting failure,
> culminating in build 77 of Nevada.  Earlier builds:
> 
> - Were unable to distinguish device removal from devices misbehaving,
>   depending on the driver and hardware.
> 
> - Did not diagnose a series of I/O failures as disk failure.
> 
> - Allowed several (painful) SCSI retries and continued to queue up I/O,
>   even if the disk was fatally damaged.

> Most classes of hardware would behave reasonably well on device removal,
> but certain classes caused cascading failures in ZFS, all which should
> be resolved in build 77 or later.

I seem to be having exactly the problems you are describing (see my
postings with the subject 'zfs on a raid box'). So I would very much
like to give b77 a try. I'm currently running b76, as that's the latest
sxce that's available. Are the sources to anything beyond b76 already
available? Would I need to build it, or bfu?

I'm seeing zfs not making use of available hot-spares when I pull a
disk, long and indeed painful SCSI retries and very poor write
performance on a degraded zpool - I hope to be able to test if b77 fares
any better with this.

Regards, Paul Boven.
-- 
Paul Boven <[EMAIL PROTECTED]> +31 (0)521-596547
Unix/Linux/Networking specialist
Joint Institute for VLBI in Europe - www.jive.nl
VLBI - It's a fringe science
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