LU-2275 mdt: Avoid setting positive dispositions too early

mdt_finish_open and mdt_open_by_fid_lock set DISP_LOOKUP_POS
and DISP_OPEN_OPEN a bit too eagerly only to have later code add
negative disposition and a lookup error, confusing a client
with such self-contradicting replies in the end.

This patch only sets positive dispositions when we are sure
not to get them overruled.

Change-Id: I3389f1d59b21f4a9e4c16ca75b398785ea6e130c
Signed-off-by: Oleg Drokin <green@whamcloud.com
Reviewed-on: http://review.whamcloud.com/4459
Tested-by: Hudson
Tested-by: Maloo <whamcloud.maloo@gmail.com>
Reviewed-by: wangdi <di.wang@intel.com>
Reviewed-by: Fan Yong <fan.yong@intel.com>
Reviewed-by: Oleg Drokin <green@whamcloud.com>
LU-1187 osd: allocate osd_compat_objid_seq dynamically

1. Allocate osd_compat_objid_seq dynamically, so osd can load
as many as seq it wants.
2. Change group to seq.
3. remove the compat from name, because we will still use
the same disk-layout for FID on OST.

Change-Id: I52d40ecd805aa44074838496e44ed2b71fd39f92
Signed-off-by: Wang Di <di.wang@whamcloud.com>
Reviewed-on: http://review.whamcloud.com/4323
Reviewed-by: Andreas Dilger <andreas.dilger@intel.com>
Tested-by: Hudson
Reviewed-by: Fan Yong <fan.yong@intel.com>
Tested-by: Maloo <whamcloud.maloo@gmail.com>
Reviewed-by: Alex Zhuravlev <bzzz@whamcloud.com>
LU-657 test: limit the write size in run_dd

1, in run_dd.sh, limit the write size of dd according to
   the free disk space currently intead of using fixed value.

2, fix a bug in ofd_tnx_stop_cb, which cleared the 'thandle->th_sync'

Test-Parameters: envdefinitions=SLOW=yes clientcount=4 osscount=2 mdscount=2 austeroptions=-R failover=true useiscsi=true testlist=recovery-mds-scale
Signed-off-by: Hongchao Zhang <hongchao.zhang@whamcloud.com>
Change-Id: I8b9cc2fc8b9831e5ad79b521ba7af4ae9160143f
Reviewed-on: http://review.whamcloud.com/4599
Tested-by: Hudson
Tested-by: Maloo <whamcloud.maloo@gmail.com>
Reviewed-by: Niu Yawei <yawei.niu@intel.com>
Reviewed-by: Jian Yu <jian.yu@intel.com>
Reviewed-by: Andreas Dilger <andreas.dilger@intel.com>
Revert "LU-2469 tests: use MDS/OSTDEV and MDS/OSTDEVBASE with zfs"

This broke zfs completely apparently

This reverts commit d25e7654f798060f6b671c3b65949a70b8c67f58.