Changelog for GPFS update 3.4.0-17.

This is not a definitive list as other minor corrections have
been made which are not listed here.

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* Fix a segfault problem after node takeover as ccmgr and finish dmapi
  session recover process.

* Add environment variable MMBACKUP_RECORD_ROOT specs an alternate dir
  to store shadow files, list files, temp files, etc.

* Fix an issue in a mixed version cluster, where a node running
  running GPFS 3.4 or older failing in a small window during mount
  could cause spurious log recovery errors.

* Fix CNFS to recognize GPFS filesystem in RHEL6.3.

* Fixed assert happened in trace statement after xattr overflow block
  was copied to snapshot.

* offline bit gets lost after CIFS calls gpfs_set_winattrs.

* Fix sequential write performance and deadlock since 3.4.0.12 and
  3.5.

* If rebuilding shadow file encounters a severe problem when mmbackup
  is invoked with query option (-q), mmbackup will stop further backup
  processing against the TSM server.

* This fix applies to any customer who has policy rules that reference
  the PATH_NAME variables AND who might encounter a path_name whose
  length exceeds 1024 bytes.

* Fix segfault in dm_getall_disp() functions.

* Fix slow sequential read performance of very large files in a file
  system with a 16K block size and a very large pagepool.

* Fix rdwrFast.fastpathGetstate() == 0 after a cluster membership
  loss.

* This update addresses the following APARs: IV25864 IV27289 IV27565
  IV28096 IV28114 IV28116.
