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Showing posts with label modifying vcs configurationi. Show all posts
Showing posts with label modifying vcs configurationi. Show all posts

Thursday, 27 January 2011

Modifying NFS resource hosts options in VCS


I have a nfs share (/apps/Wst) under veritas cluster control with permission ro=host1:host2. I need to add one more host (host3) to this list.
Below is the procedure.


1. Get the name of resource related to this mountpoint in share type.
root@node1# hares -display -type Share|grep /apps/Wst
intProc_wst_share         ArgListValues          node1     PathName    1       /apps/Wst  Options 1       ro=host1:host2
intProc_wst_share         ArgListValues          node2   PathName    1       /apps/Wst  Options 1       ro=host1:host2
intProc_wst_share         PathName               global     /apps/Wst
We got it. The resource name is intProc_wst_share.


2. Make the vcs configuration rewritable.
root@node1# haconf -makerw 


3. Add the host3 also in the list using below command with host3 also
root@node1# hares -modify intProc_wst_share  Options  ro=host1:host2:host3


4. Disable  critical status so that restarting the resource doesnot effect the any parent or child.
root@node1# hares -modify intProc_wst_share  Critical  0  


5. Save the configuration and sync with all the nodes of cluster
root@node1# haconf -dump -makero from localhost


6. Stop and start the intProc_wst_share resource.
root@node1# hares -offline intProc_wst_share  -sys node1; hares -online intProc_wst_share  -sys node1


7. Now the third host (host3) is visible in showmount output and the share can be mounted on host3 also.
root@node1# showmount -e
export list for node1:
/apps/Wst    ro=host1,host2,host3