[LU-8045] MDT fails to allow client mounts if one MDT is not connected

• Type: Bug
• Resolution: Unresolved
• Priority: Major
• Affects Version/s: Lustre 2.8.0
• Labels: llnl
• Environment: TOSS 2 (RHEL 6.7 based); kernel 2.6.32-573.22.1.1chaos.ch5.4.x86_64; Lustre 2.8.0+patches 2.8-llnl-preview1; zfs-0.6.5.4-1.ch5.4.x86_64; 1 MGS - separate server; 40 MDTs - each on separate server; 10 OSTs - each on separate server
• Severity: 3
• Assignee: Lai Siyao
• Reporter: Olaf Faaland

Description

See LU-8044
With many MDTs, if MDT0000 cannot connect with one of the other MDTs, (perhaps only on initial startup, I don't know), MDT0000 appears to ignore connection requests from clients.

Seems as if MDT0000 ought to be able to allow mounts, and the filesystem should simply function without the apparently broken MDT.