iokaste crash recovery 2008-04-17

• syslog unconclusive
• AFS logs held no hints, either

  • update 2008-05-26: the problems with fs replaceosd were likely related to version mismatches between io and iokaste (fs != rxosd)

patch analysis

isolating vos splitvol

• sought through the patch, identifying places where
  • the client command was changed
  • the server was given the extra RPC

• used vimdiff to introduce changes into

  • rxgen file
  • vos implementation
  • volser implementation

  and added the new vol_split.c code file, therefore

  • also updating volser's Makefile.in

Conclusion

It turns out that the volsplit functionality depends on the reverse lookup functionality, also new with the full patch. Thus isolating volsplit failed at this stage and must be postponed until reverse lookups have been isolated.