Bug 703435

Summary: NFS Kdump configuration create /var/crash/var/crash directory on kdump server
Product: Red Hat Enterprise Linux 6 Reporter: Guohua Ouyang <gouyang>
Component: ovirt-nodeAssignee: Joey Boggs <jboggs>
Status: CLOSED NOTABUG QA Contact: Virtualization Bugs <virt-bugs>
Severity: low Docs Contact:
Priority: low    
Version: 6.1CC: apevec, leiwang, moli, ovirt-maint, ycui
Target Milestone: rc   
Target Release: ---   
Hardware: Unspecified   
OS: Unspecified   
Whiteboard:
Fixed In Version: Doc Type: Bug Fix
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Clone Of: Environment:
Last Closed: 2011-08-09 08:44:31 UTC Type: ---
Regression: --- Mount Type: ---
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Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:

Description Guohua Ouyang 2011-05-10 10:44:20 UTC 
Description of problem:
After configure nfs kdump server on rhevh, it created /var/crash/var/crash/ directory on kdump server and saved vmcore file to this directory.
It's better to use /var/crash/ and saved vmcore file to /var/crash/.


Version-Release number of selected component (if applicable):
rhev-hypervisor-6.1-20110506

How reproducible:
Always.

Steps to Reproduce:
1. configure nfs kdump server on rhevh
2. reboot
3. kdump service is starting, echo c>  /proc/sysrq-trigger

Actual results:
vmcore file is saved to /var/crash/var/crash/

Expected results:
vmcore file is saved to /var/crash/
Comment 1 Joey Boggs 2011-08-09 02:29:28 UTC 
this is more a feature of kdump we can't necessarily change,  it will put the vmcore under <mountpoint>:/var/crash. To get it just under /var/crash we would need to set kdump to just /.   If / isn't exported on the nfs server it will fail. Exporting / over nfs isn't gonna be common if not a security issue, may just need to put a release note in and file a bug to put a hardcoded directory into kdump options.
Comment 2 Alan Pevec 2011-08-09 08:44:31 UTC 
ok, this is even documented in man kdump.conf:
       net <nfs mount>
              Will      mount      fs     and     copy     /proc/vmcore     to
              <mnt>/var/crash/%HOST-%DATE/, supports DNS.  Note  that  a  fqdn
              should be used as the server name in the mount point