[PATCH 0/2] xfs_repair: improved secondary sb search

[Bill O'Donnell]

Hello -

Current xfs_repair uses a brute force approach to find a valid
secondary sb. This series optimizes the secondary sb search, using
similar method to determine geometry as that of xfs_mkfs. If the
faster method fails in its search, fall back to original brute force
slower search.

patch 1 has some general infrastructure adjustments, moving general
topology functions from mkfs to libxcmd.

patch 2 adds the new secondary superblock search method.

Questions, comments are welcome.

Thanks-
Bill