LU-2449 osd: lookup(..) to fetch fid from parent's LMA

in case LinkEA is not accessible for a reason, osd-zfs
will be trying to get fid for ".." using parent's dnode
which is stored in regular ZFS attributes. parent's
LMA can be used to get fid for ".."

Signed-off-by: Alex Zhuravlev <alexey.zhuravlev@intel.com>
Change-Id: I34e9f884eb60f036c2f941013bf22e154efc2ff4
Reviewed-on: http://review.whamcloud.com/5629
Reviewed-by: Andreas Dilger <andreas.dilger@intel.com>
Tested-by: Hudson
Tested-by: Maloo <whamcloud.maloo@gmail.com>
Reviewed-by: Mike Pershin <mike.pershin@intel.com>
LU-2852 script: sanity 27u should cleanup test dir

sanity 27u should cleanup test dir before test in case there
are remaining files from previous tests.

remove 27u from ALWAYS_EXCEPT since it can pass now.

Signed-off-by: Lai Siyao <lai.siyao@intel.com>
Change-Id: Id21589c1e1ecf0f4143fad3574cd779c73adb7aa
Reviewed-on: http://review.whamcloud.com/5670
Tested-by: Hudson
Tested-by: Maloo <whamcloud.maloo@gmail.com>
Reviewed-by: Bobi Jam <bobijam@gmail.com>
Reviewed-by: Jian Yu <jian.yu@intel.com>
Reviewed-by: Oleg Drokin <oleg.drokin@intel.com>
LU-2735 test: disable LRU to avoid page deletion

In sanity.sh, subtest 151 checks whether the page written previously
is in cache or not, this patch disable the LRU of objects in OST to
avoid the object and its content(pages) to be dropped.

Change-Id: Ie481d13215dac599e0b7e122fcc7e9819a053af5
Signed-off-by: Hongchao Zhang <hongchao.zhang@intel.com>
Reviewed-on: http://review.whamcloud.com/5475
Tested-by: Hudson
Tested-by: Maloo <whamcloud.maloo@gmail.com>
Reviewed-by: Jinshan Xiong <jinshan.xiong@intel.com>
Reviewed-by: Niu Yawei <yawei.niu@intel.com>
Reviewed-by: Oleg Drokin <oleg.drokin@intel.com>