Bug 681919

Summary: NFS mount disappears if an unrelated connection goes down
Product: [Fedora] Fedora Reporter: Sandro Bonazzola <sandro.bonazzola>
Component: kernelAssignee: Steve Dickson <steved>
Status: CLOSED CURRENTRELEASE QA Contact: Fedora Extras Quality Assurance <extras-qa>
Severity: high Docs Contact:
Priority: unspecified    
Version: 14CC: gansalmon, itamar, jonathan, kernel-maint, madhu.chinakonda
Target Milestone: ---   
Target Release: ---   
Hardware: i686   
OS: Linux   
Whiteboard:
Fixed In Version: Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2012-03-13 18:45:20 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:

Description Sandro Bonazzola 2011-03-03 15:33:35 UTC 
Description of problem:

On a PC with 2 ethernet, eth0 is on the same network of a NAS, eth1 is connected to another network.
The PC mount some NAS shares via NFS.
Unplugging the cable on eth1 cause something that let the NFS mounts disappear.
/proc/mounts doesn't show any nfs mounted directory and ls shows an empty directory where it was supposed to be mounted the NAS share.
The blackout last about 3 seconds but it's enough to be detected.
 

Version-Release number of selected component (if applicable):
kernel-2.6.35.11-83.fc14.i686
nfs-utils-1.2.3-5.fc14.i686
NetworkManager-0.8.3.996-1.fc14.i686
ifplugd-0.28-15.fc14.i686

How reproducible:
Always reproducible.

Steps to Reproduce:
1. mount via NFS a share on eth0 network
2. watch -n1 "cat /proc/mounts"
3. unplug eth1 cable
  
Actual results:
There is a blackout in nfs mount

Expected results:
no blackout in nfs mount

Additional info:
dmesg and /var/log/message just record eth1 unplugged, no messages related to NFS.
Comment 1 Sandro Bonazzola 2011-06-07 12:39:42 UTC 
Still present

Version-Release number of selected component (if applicable):
kernel-2.6.35.13-92.fc14.i686
nfs-utils-1.2.3-6.fc14.i686
NetworkManager-0.8.4-1.fc14.i686
ifplugd-0.28-15.fc14.i686

Always reproducible, tested on 2 PCs.
Comment 2 Josh Boyer 2011-08-29 17:32:08 UTC 
Steve, any ideas?