When will ZFS become stable?

Ivan Voras ivoras at freebsd.org
Sun Jan 6 05:51:03 PST 2008

Kris Kennaway wrote:

> kmem problems are just tuning.  They are not indicative of stability 
> problems in ZFS.  

I disagree - anything that causes a panic is a stability problem. Panics 
persist AFTER the tunings (for i386 certainly, and there are unsolved 
reports about it on amd64 also) and are present even when driving kmem 
size to the maximum. The tunings *can not solve the problems* currently, 
they can only delay the time until they appear, which, by Murphy, often 
means "sometime around midnight at Saturday". See also the possibility 
of deadlocks in the ZIL, reported by some users.

> Please report any further non-kmem panics you experience.

I did, once to Pawel and once to the lists. Pawel couldn't help me and 
nobody responded on the lists. Can you perform a MySQL read-write 
benchmark on one of the 8-core machines with database on ZFS for about 
an hour without pause? On a machine with 2 GB (or less) of RAM, 
preferrably? I've seen problems on i386 but maybe they are also present 
on amd64.

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