[LU-1580] POSIX: pathconf.32: pathconf("/dev/pts/0", _PC_NAME_MAX) did not give correct results

• Status: Resolved
• Project: Lustre
• Affects Version/s: Lustre 2.3.0
• Type: Bug
• Priority: Blocker
• Reporter: Maloo
• Assignee: Jian Yu
• Resolution: Fixed
• Severity: 3

Description

This issue was created by maloo for Chris Gearing <[e-mail]>

This issue relates to the following test suite run: https://maloo.whamcloud.com/test_sets/e8bc176e-c0a4-11e1-a5ca-52540035b04c.

The sub-test test_1 failed with the following error:

Run POSIX testsuite on /mnt/lustre failed

Info required for matching: posix 1

Comments

[Sarah Liu]

another failure: https://maloo.whamcloud.com/test_sets/aeb9eac8-c57c-11e1-ab7d-52540035b04c
From the test report there are 4 failed tests, 3 of them are known issues listed in LU-380 and LU-379 while the pathconf.32 is a new one.

14:21:04:Test Name: pathconf.32 Failed
14:21:04:
14:21:04: Test Description:
14:21:04:When path does not refer to a directory, then a call to pathconf(path,
14:21:04:_PC_NAME_MAX) either returns a value of -1 and sets errno to [EINVAL],
14:21:04:or returns a valid value for

{NAME_MAX}

.
14:21:04:Posix Ref: Component PATHCONF Assertion 5.7.1.4-52(A)
14:21:04:
14:21:04: Test Strategy:
14:21:04:FOR a regular file, a FIFO (when not testing XNFS) and a terminal file
14:21:04:(when not testing XNFS)
14:21:04: OBTAIN the system value associated with pathconf() and _PC_NAME_MAX
14:21:04: VERIFY that pathconf() returned successfully or pathconf() returned
14:21:04: -1 and errno was set to EINVAL
14:21:04:
14:21:04: Test Information:
14:21:04:pathconf("/dev/pts/0", _PC_NAME_MAX) did not give correct results
14:21:04:expected: return value == -1, errno == 22 (EINVAL)
14:21:04: OR: return value != -1
14:21:04:observed: return value == -1, errno == 2 (ENOENT)

[Minh Diep]

I'll try this manually to see if it makes a difference. This is not due to testsuite but posix detect some issue.

[Minh Diep]

I have reproduced this manually. This seems like Posix issue
https://maloo.whamcloud.com/test_sets/2ed77eb4-d077-11e1-aa18-52540035b04c

[Jodi Levi (Inactive)]

Yu Jian,
Can you please take a look at this one?

[nasf (Inactive)]

Since Lustre never pass all the POSIX test cases. We need to check whether above failures are new ones or known issues.

[Jian Yu]

The unlink.6 and write.15 failures are LU-380. The readdir.6 failure is LU-379. This ticket is used to track pathconf.32 failure.

I found that while formatting a partition/disk as ext4 filesystem and run POSIX test suite on it to generate baseline, the pathconf.32 test also failed. However, if a loop device is used to be formatted as ext4, the test passed. So, the issue is related to the baseline, not Lustre.

[Jodi Levi (Inactive)]

This item needs to be added to the release notes.

[Peter Jones]

Actually, Yujian is working on a fix.

[Jian Yu]

I just verified again that the same failure also occurred on ext4 filesystem. After updating the LSB-VSX POSIX test suite to disable the terminal file test in pathconf.32, Lustre POSIX compliance testing passed on T.pathconf test set (baseline is ext4):

Lustre branch: master
Lustre build: http://build.whamcloud.com/job/lustre-master/766/
https://maloo.whamcloud.com/test_sets/3df07240-e088-11e1-a388-52540035b04c

[Jian Yu]

The change on LSB-VSX POSIX test suite has been pushed into the toolkit repository. Let's wait for a successful posix test run performed by autotest and then we can close this ticket as resolved.

[Minh Diep]

Yujian, you can verify by doing a yum install posix on any node. If the src include your change, then we are good. If not, please contact Joshua to sync the repo with yum

[Jian Yu]

Yujian, you can verify by doing a yum install posix on any node. If the src include your change, then we are good. If not, please contact Joshua to sync the repo with yum

Thanks Minh for this info. I've verified this by provisioning Lustre 2.1.3 test nodes and run posix test on them, the posix-1.0-wc1 package contained the new changes and posix test passed:
https://maloo.whamcloud.com/test_sessions/150c92c0-e158-11e1-9a39-52540035b04c