[LU-12396] lfs df output is treated as binary data on RHEL 8.0 client

• Type: Bug
• Resolution: Fixed
• Priority: Minor
• Fix Version/s: Lustre 2.13.0, Lustre 2.12.3
• Environment: Lustre client distro: RHEL 8.0
• Severity: 3
• Assignee: Yang Sheng
• Reporter: Jian Yu

Description

On RHEL 8.0 client, the output of "lfs df" is treated as binary data:

# lfs df | grep summary
Binary file (standard input) matches

The above issue caused many tests failed.

In Lustre test scripts, we can use "grep -a" to resolve the issue:

-a, --text
              Process a binary file as if it were text; this is equivalent to the --binary-files=text option.

# lfs df | grep -a summary
filesystem_summary:     13528032       76072    12685192   1% /mnt/lustre

Issue Links

• is related to: LU-12269 Support RHEL 8.0
• is related to: LU-11963 Add nonrotational flag to obd_statfs