Bug 800735

Summary: NLM on IPv6 does not work as expected
Product: [Community] GlusterFS Reporter: Sachidananda Urs <sac>
Component: nfsAssignee: Vinayaga Raman <vraman>
Status: CLOSED CURRENTRELEASE QA Contact:
Severity: unspecified Docs Contact:
Priority: unspecified    
Version: pre-releaseCC: divya, gluster-bugs, rwheeler
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Fixed In Version: Doc Type: Bug Fix
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Last Closed: 2012-05-04 10:30:00 UTC Type: ---
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Description Flags
Program to test locks none

Description Sachidananda Urs 2012-03-07 05:51:40 UTC 
Description of problem:

- Open a file and lock a certain region and write data.
- Allow another process to lock the file, it should block - blocks.
- Check data to ensure that it has blocked.
- Now unlock the region and the other process should lock and write data

Unlocks but the other process does not lock the file and write data. Process goes into D state.

The same exercise works on FUSE, local FS, and Kernel NFS.

Find the attached program.

Version-Release number of selected component (if applicable):

glusterfs-3.3.0qa25

How reproducible:

Always. Program attached.
Comment 1 Sachidananda Urs 2012-03-07 05:52:19 UTC 
Created attachment 568142 [details]
Program to test locks
Comment 2 Krishna Srinivas 2012-03-08 13:46:58 UTC 
This is because pmap_getport does not support AF_INET6. doing "ifconfig eth0 del <ipv6 addr>" fixes the behavior seen above.

Need to investigate on IPv6 support for NLM, for now making it work on Ipv4 only for QA.
Comment 3 Anand Avati 2012-03-10 09:09:34 UTC 
CHANGE: http://review.gluster.com/2909 (nlm: support ipv4 only) merged in master by Vijay Bellur (vijay)
Comment 4 Sachidananda Urs 2012-03-26 09:22:53 UTC 
Works on latest code, but not sure whether to close this. Since the fix is not complete but just a work around for now.
Comment 5 Sachidananda Urs 2012-04-25 12:32:35 UTC 
Kris/Divya can you confirm if this is documented. If so, I can mark this as verified.
Comment 6 Divya 2012-04-25 12:55:24 UTC 
I have added it as Known Issue in Release Notes and it is available on the staging server at: http://documentation-stage.bne.redhat.com/docs/en-US/Red_Hat_Storage/2/html/2.0_Release_Notes/chap-Release_Notes-Known_Issues.html