2009-11-02 21:03:59 +00:00
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SUMMARY OF MAJOR KNOWN PROBLEMS IN v0.4.6 (Development Release)
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2009-02-05 00:25:09 +00:00
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2009-11-02 21:03:59 +00:00
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* Fault Management (FM) and sysevent support / analog.
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bugzilla 14866, 15645
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2009-02-05 00:25:09 +00:00
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2009-11-02 21:03:59 +00:00
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This is probably the biggest remaining chunk of work. Linux has no
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direct equivalent of the Solaris Fault Management Architecture (FMA)
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and we need one. All fault information is currently ignored and no
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disk errors are even logged. We need to settle on a design for this
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but minimally it needs to log the events to syslog.
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2009-02-05 00:25:09 +00:00
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2009-11-02 21:03:59 +00:00
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* Implement the ZVOL.
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bugzilla xxxxx
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2009-02-05 00:25:09 +00:00
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2009-11-02 21:03:59 +00:00
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This should be pretty staight forward now that the DMU is fully
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implemented and solid. It just needs to be done.
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2009-02-05 00:25:09 +00:00
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2009-11-02 21:03:59 +00:00
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* Implement the ZPL.
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bugzilla xxxxx
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Getting basic ZPL support should be pretty straight forward. Moving
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beyond that to fully integrate with the VFS for things like mmap and
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file locking will be trickier.
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* Integrate the ZFS-FUSE port in to this code base.
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bugzilla xxxxx
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Merging the zfs-fuse code base in with this project would be nice from a
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code maintence standpoint. This code base is quite a bit newer than
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zfs-fuse and it already provides a libzpool library for zfs-fuse to link
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against. This should be a pretty straight forward addition.
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* Emulate kthreads with pthreads in userspace.
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bugzilla xxxxx
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There is a patch available for this but each time I've integrated it
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I've observed SIGSEGVs in ztest. Once this patch is in place ztest
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can be used to use the kthread API which brings us one step closer
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to being able to run it in the kernel as an additional sanity check.
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* DMU Performance
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bugzilla 13566
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While performance is currently not bad it is not where it needs to be
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for production use. The latest test results which can be found in the
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docs directly show that on hardware which is capable of 8GB/s we only
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see a few GB/s when running through the DMU. To address this we need
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to finish getting the code working with the kernel lock profiler and
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look for some hot locks. Additionally, it would be interesting to run
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the same tests on Solaris (once we have a ZVOL/ZPL) and compare the
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performance. It's not at all clear to me Solaris currently does better.
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