[LU-7727] open with FMODE_EXEC fails with ETXTBSY after a failed FMODE_WRITE open attempt on a read only client

• Type: Bug
• Resolution: Fixed
• Priority: Minor
• Fix Version/s: Lustre 2.9.0
• Labels: patch
• Severity: 3
• Assignee: WC Triage
• Reporter: Li Dongyang (Inactive)

Description

How to reproduce:

we have a executable file on a read only mounted client:

[root@client mnt]# ls -l /mnt/
total 8
-rwxr-xr-x 1 root root 6439 Feb  1 14:51 test
[root@client mnt]# ./test
Hello World!

Then we try to write to the file, which will fail with EROFS:

[root@client mnt]# echo foo >> ./test
-bash: ./test: Read-only file system

Then run the file again:

[root@client mnt]# ./test
-bash: ./test: Text file busy

Note the executable fails to run across the whole cluster from this point, even on the clients without read only mount option.

Issue Links

• duplicates: LU-8441 Text file busy error after overwriting file