ZFS L2ARC - incorrect size and abnormal system load on r255173

[Vitalij Satanivskij]

AJ> Some background on L2ARC compression for you:
AJ> 
AJ> http://wiki.illumos.org/display/illumos/L2ARC+Compression

I'm alredy see it.


 
AJ> http://svnweb.freebsd.org/base?view=revision&revision=251478
AJ> 
AJ> Are you sure that compression on pool/zfs is off? it would normally
AJ> inherit from the parent, so double check with: zfs get compression pool/zfs

Yes, compression turned off on pool/zfs, it's was may time rechecked.



AJ> Is the data on pool/zfs related to the data on the root pool? if
AJ> pool/zfs were a clone, and the data is actually used in both places, the
AJ> newer 'single copy ARC' feature may come in to play:
AJ> https://www.illumos.org/issues/3145

No, both pool and pool/zfs have diferent type of data, pool/zfs was created as new empty zfs (zfs create pool/zfs)

and data was writed to it from another server. 


Right now one machine work fine with l2arc. This machine without patch for corecting ashift on cache devices.

At last 3 day's working with zero errors. Another servers with same config similar data, load and so on after 2 day 
work began report abouy errors.


AJ> 
AJ> 
AJ> 
AJ> -- 
AJ> Allan Jude
AJ> 
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