LU-4669 lmv: remove unused lmv_adjust_dirpages()

This patch fixes the following compile error by removing the
dead codes: "error: 'lmv_adjust_dirpages' defined but not used".
This code was moved to mdc_adjust_dirpages() in commit 4e0c8aeb94
(http://review.whamcloud.com/7043).

Signed-off-by: Jian Yu <jian.yu@intel.com>
Change-Id: I0cc7dbb5aad50727cc4d5cc36cce964a236077a3
Reviewed-on: http://review.whamcloud.com/9810
Tested-by: Jenkins
Reviewed-by: John L. Hammond <john.hammond@intel.com>
Reviewed-by: Andreas Dilger <andreas.dilger@intel.com>
Tested-by: Maloo <hpdd-maloo@intel.com>
LU-4691 lmv: honor MDT index when creating volatile file

LMV should honor MDT index embedded in the name of volatile
file, then during hsm restore, the file under striped dir can
be restored to the right MDT.

Add test 405 in sanity-hsm to verify it.

Change-Id: I05170beee5255cf6581a2ea43edb6cc434a7cf8e
Signed-off-by: Wang Di <di.wang@intel.com>
Reviewed-on: http://review.whamcloud.com/10866
Tested-by: Jenkins
Tested-by: Maloo <hpdd-maloo@intel.com>
Reviewed-by: Andreas Dilger <andreas.dilger@intel.com>
Reviewed-by: Henri Doreau <henri.doreau@cea.fr>
Reviewed-by: Oleg Drokin <oleg.drokin@intel.com>