[LU-5020] OST can be all mounted successfully in parallel mount scenario

• Type: Bug
• Resolution: Fixed
• Priority: Minor
• Fix Version/s: Lustre 2.11.0, Lustre 2.10.3
• Severity: 3
• Assignee: Hongchao Zhang
• Reporter: Hongchao Zhang

Description

In parallel OST mount scenario, the MGC could be disconnected manually in "lustre_start_mgc".

furthermore, if the first mount failed, the corresponding OSS device will be destroyed asynchronously,
which will cause the following mount fail for it can't setup the OSS again.

Issue Links

• is duplicated by: LU-9577 mount.lustre: mount /dev/sde at /mnt/testfs-MDT0001 failed: File exists
• is related to: LU-11058 sanity test_77k: checksum(1) != 0
• is related to: LU-9398 Mounting two file systems from one MGS simultaneously always causes one to fail