[LU-1206] Executing unwriteable, recently touched file returns ETXTBSY (Text file busy)

• Type: Bug
• Resolution: Fixed
• Priority: Minor
• Fix Version/s: Lustre 2.2.0, Lustre 2.3.0, Lustre 2.1.2
• Affects Version/s: Lustre 2.1.1
• Severity: 3
• Assignee: Sarah Liu
• Reporter: Prakash Surya (Inactive)

Description

An issue with Lustre 2.1.1 (haven't tested other versions) is causing execve to fail with ETXTBUSY.

There appear to be two keys to reproducing the problem:

1) The file must not be writable
2) touch the file

Here's a simple reproducer that break under lustre 2.1 on hype:

$ touch foo # create it the first time
$ chmod a-w,u+x foo
$ touch foo
$ ./foo
-bash: ./foo: Text file busy

It doesn't matter if the file has real contents or not to reproduce the problem.

NOTE: I haven't been able to reproduce this on my VM in a single node configuration. I only see this on our test cluster.

Issue Links

• is related to: LU-1220 mdt_mfd_open needs io_epoch cleanup if mo_open failed
• Trackbacks: Changelog 2.1 Changes from version 2.1.1 to version 2.1.2 Server support for kernels: 2.6.18308.4.1.el5 (RHEL5) 2.6.32220.17.1.el6 (RHEL6) Client support for unpatched kernels: 2.6.18308.4.1.el5 (RHEL5) 2.6.32220.17.1....
• Trackbacks: Changelog 2.2 version 2.2.0 Support for networks: o2iblnd OFED 1.5.4 Server support for kernels: 2.6.32220.4.2.el6 (RHEL6) Client support for unpatched kernels: 2.6.18274.18.1.el5 (RHEL5) 2.6.32220.4.2.el6 (RHEL6) 2.6.32.360....