| Summary: | nfs mounts are duplicated when server is a cluster NAS (eg isilon) | ||
|---|---|---|---|
| Product: | Red Hat Enterprise Linux 6 | Reporter: | tin.ho |
| Component: | nfs-utils | Assignee: | Steve Dickson <steved> |
| Status: | CLOSED WONTFIX | QA Contact: | Yongcheng Yang <yoyang> |
| Severity: | unspecified | Docs Contact: | |
| Priority: | unspecified | ||
| Version: | 6.8 | CC: | chunwang, eguan, jacraig, xzhou |
| Target Milestone: | rc | ||
| Target Release: | --- | ||
| Hardware: | x86_64 | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | Doc Type: | If docs needed, set a value | |
| Doc Text: | Story Points: | --- | |
| Clone Of: | Environment: | ||
| Last Closed: | 2017-12-06 11:34:39 UTC | Type: | Bug |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
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Description
tin.ho
2016-10-26 21:49:12 UTC
Confirmed with same symptoms, also using Isilon OneFS cluster while mounting NFS storage via SmartConnect solution. Wondering if this is a "bug," or a "feature" for failover? The symptom does not appear to exist on NFS clients with similar configuration running RHEL 7.x. Both 'nscd' and 'nodev' are disabled on our RHEL 6.x clients, however, we can confirm the issue. I seem to have been able to isolate this behavior to the use of NetworkManager. The following procedure eliminates the duplicate mounting for me: 1) Disable the 'NetworkManager' service: # chkconfig NetworkManager off 2) In each of the '/etc/sysconfig/network-scripts/ifcfg-*' interface configuration files, set 'NM_CONTROLLED=no'. 3) Reboot and confirm expected behavior. Again, I would be curious to learn if this behavior is truly a "bug," or if this is an intentional measure to attempt to ensure a capability for failover (i.e., mount the same clustered NFS export to the same mountpoint twice using different NFS server IPs, then if the 'active' node gets killed, there should be another 'active' node sitting under it, ready to service the export). Thank you for the detective work! Disabling NetworkManager from starting indeed made the double mounts go away upon reboot. It is acceptable solution for my server environment where NM and GUI isn't needed. Though I would still argue the behavior is a bug and not a feature. The network remained the same thru the process (it is static IP a VM on ESX, not roaming in WiFi). I don't see the value of having an underlaying mount in case of any "higher" network goes away. Much thanks again. Tin Red Hat Enterprise Linux 6 is in the Production 3 Phase. During the Production 3 Phase, Critical impact Security Advisories (RHSAs) and selected Urgent Priority Bug Fix Advisories (RHBAs) may be released as they become available. The official life cycle policy can be reviewed here: http://redhat.com/rhel/lifecycle This issue does not meet the inclusion criteria for the Production 3 Phase and will be marked as CLOSED/WONTFIX. If this remains a critical requirement, please contact Red Hat Customer Support to request a re-evaluation of the issue, citing a clear business justification. Note that a strong business justification will be required for re-evaluation. Red Hat Customer Support can be contacted via the Red Hat Customer Portal at the following URL: https://access.redhat.com/ |