[OpenIndiana-discuss] What happens when a ZIL drive dies?

[Jesus Cea]

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On 07/06/12 15:17, Matt Clark wrote:
> That's true, but if you look at slides 24 & 25 of 
> http://www.ddrdrive.com/zil_accelerator.pdf you'll see seek 
> distributions for a SLOG device with the ZILs for five filesystems
> - although each ZIL is broadly append only (slides 21 and 22),
> there is still a lot of seeking going on.  Of course if you only
> had one active FS on a pool, the activity would be almost pure
> append, so sequential write performance would be the most important
> factor.

I always wondered WHY. What is the point of keeping separate ZILs (one
per dataset) when having a discrete LOG device.

Any idea?.

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