[LU-6707] EL7 client cannot find loop device for posix test

• Type: Bug
• Resolution: Fixed
• Priority: Critical
• Fix Version/s: Lustre 2.10.0
• Affects Version/s: Lustre 2.9.0, Lustre 2.10.0
• Labels: triage
• Environment: server: lustre-master #2770 RHEL6; client: EL7
• Severity: 3
• Assignee: Jian Yu
• Reporter: Sarah Liu

Description

https://testing.hpdd.intel.com/test_sets/209ce6aa-7ee3-11e4-ab67-5254006e85c2

posix test_1: @@@@@@ FAIL: /dev/loop/1 and /dev/loop1 gone? 

Issue Links

• is related to: LU-9102 Header files are missing from EL7 which needed by the posix test suite
• is related to: LU-7758 Interop master<->2.7.1: POSIX fstat.1 failed: fstat() set st_mtime incorrectly