[LU-19612] IPv6 - Remote dir creation on other MDTs fails

• Type: Bug
• Resolution: Cannot Reproduce
• Priority: Major

Epic/Theme

IPv6

• Severity: 3
• Assignee: Max Dilger
• Reporter: Max Dilger

Description

Lustre clients mounting with network restrictions (network=tcp or network=tcp6), only the first MDT (MDT0000) becomes accessible. All additional MDTs (MDT0001+) fail to connect, causing remote directory creation commands to fail with "No such device" error.

The bug occurs when a Lustre client mounts a multi-MDT filesystem using explicit network-type NIDs in a mixed IPv4/IPv6 environment.