Fixes Defects:

PI19218,PI72025,PI75108,PI76420,PI77954,PI78498,PI78636,PI78918,PI80487,PI83215,PI85611



This patch contains the following software changes:


PI19218:

   Problem: The ClearCase Unix version tree browser dumps core when the zoom control was used to shrink the version tree.

   Fix: The Unix version tree browser has been fixed.


PI72025:

   Problem: Creating or deleting hyperlinks that span VOBs (common in a UCM setup) in IBM Rational ClearCase can lead to a situation where two processes are waiting on each other for a lock on one of the VOB databases. This will lead to the Dead Man Lock Timeout to be triggered, making one of the two operations to fail.

   Fix: A ClearCase db transaction will be suspended and restarted for cross vob hlinks.


PI75108:

   Problem: Users of ClearCase dynamic views may see messages reporting stale transaction ids in the mvfs_log log file.  Unexpected application I/O errors or hangs may coincide with these messages.

   Fix: The logic for how the MVFS handles certain transient errors in communicating with a view_server process has been corrected.


PI76420:

   Problem: Rational ClearCase/Cadence integration menu customizations do not load properly after upgrading to ClearCase 8.0.1.13

   Fix: The menu customization issue is resolved.


PI77954:

   Problem: Removing a ClearCase UCM stream while a remote site has a view attached (to the stream) causes the db dumper to fail. 

   Fix: The db dumper has been fixed.


PI78498:

   Problem: When running ClearCase SLES 12 SP2, you may observe repetitive messages such as this in the syslog:

systemd[16300]: Failed to get udev device from devnum 253:0: No such device

   Fix: The ClearCase MVFS has been updated to provide the information which systemd is querying in this situation, to eliminate the log messages.


PI78636:

   Problem: An attempt to rebuild the MultiVersion File System kernel module for IBM ClearCase will fail on SUSE SLES12 SP2 and Ubuntu 16.04 systems with the error message:
/var/adm/rational/clearcase/mvfs/mvfs_src/mvfs_mdep_linux.c:2764:9:
error: implicit declaration of function  inode_capable  [-Werror=implicit-function-declaration]

   Fix: This problem has been resolved.


PI78918:

   Problem: A ClearCase "RMSTREAM" of "Feature Level 5" stream after raising VOB to "Feature Level 7" FAILS WITH "ERROR FROM VOB DATABASE" FOR UCM PROJECT VOB.

   Fix: Feature Level 7 VOBs now can handle "rmstream" command from Feature Level 5.


PI80487:

   Problem: A ClearCase Syncreplica -import of the modstream_cspec oplog generated by creating a child stream fails with a segmentation fault in a sibling that has removed the parent stream.

   Fix: The replay code has been modified to properly store the modstream_cspec oplog while skipping its replay if the parent stream is not found in the importing replica.


PI83215:

   Problem: ClearCase view private files larger than 4 KB take more time to read on SUSE SLES 12 SP2 when compared to SUSE SLES 11 SP3.

   Fix: MVFS was fixed to make the read-ahead work correctly on SUSE SLES 12.


PI85611:

   Problem: File operations on ClearCase dynamic views can cause the appearance of D-state process.

   Fix: MVFS was changed to detect and prevent the error condition that makes the D-state process occurrence.