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Sun Cluster Data Services Planning and Administration Guide for Solaris OS

How to Remove File Systems From an Online HAStoragePlus Resource

When you remove a file system from an HAStoragePlus resource, the HAStoragePlus resource treats a local file system differently from a global file system.

For information about the AffinityOn extension property, see Synchronizing the Startups Between Resource Groups and Disk Device Groups.

Caution – Caution –

Before removing a file system from an online HAStoragePlus resource, ensure that no applications are using the file system. When you remove a file system from an online HAStoragePlus resource, the file system might be forcibly unmounted. If a file system that an application is using is forcibly unmounted, the application might fail or hang.

  1. On one node of the cluster, become superuser.

  2. Retrieve the list of mount points for the file systems that the HAStoragePlus resource already manages.


    # scha_resource_get -O extension -R hasp-resource -G hasp-rg \
FileSystemMountPoints
    -R hasp-resource

    Specifies the HAStoragePlus resource from which you are removing file systems

    -G hasp-rg

    Specifies the resource group that contains the HAStoragePlus resource

  3. Modify the FileSystemMountPoints extension property of the HAStoragePlus resource to contain only the mount points of the file systems that are to remain in the HAStoragePlus resource.


    # scrgadm -c -j hasp-resource -x FileSystemMountPoints="mount-point-list"
    -j hasp-resource

    Specifies the HAStoragePlus resource from which you are removing file systems.

    -x FileSystemMountPoints="mount-point-list"

    Specifies a comma-separated list of mount points of the file systems that are to remain in the HAStoragePlus resource. This list must not include the mount points of the file systems that you are removing.

  4. Confirm that you have a match between the mount point list of the HAStoragePlus resource and the list that you specified in Step 3.


    # scha_resource_get -O extension -R hasp-resource -G hasp-rg \
FileSystemMountPoints
    -R hasp-resource

    Specifies the HAStoragePlus resource from which you are removing file systems

    -G hasp-rg

    Specifies the resource group that contains the HAStoragePlus resource

  5. Confirm that the HAStoragePlus resource is online and not faulted.

    If the HAStoragePlus resource is online and faulted, validation of the resource succeeded, but an attempt by HAStoragePlus to unmount a file system failed.


    # scstat -g

  6. (Optional) From the /etc/vfstab file on each node of the cluster, remove the entry for the mount point of each file system that you are removing.

Example 2–4 Removing a File System From an Online HAStoragePlus Resource

This example shows how to remove a file system from an online HAStoragePlus resource.


# scha_resource_get -O extension -R rshasp -G rghasp FileSystemMountPoints
STRINGARRAY
/global/global-fs/fs1
/global/global-fs/fs2
# scrgadm -c -j rshasp -x FileSystemMountPoints="/global/global-fs/fs1"
# scha_resource_get -O extension -R rshasp -G rghasp FileSystemMountPoints
STRINGARRAY
/global/global-fs/fs1
 # scstat -g

 -- Resource Groups and Resources --

             Group Name      Resources
             ----------      ---------
  Resources: rghasp          rshasp


 -- Resource Groups --

             Group Name      Node Name    State
             ----------      ---------    -----
      Group: rghasp          node46       Offline
      Group: rghasp          node47       Online


 -- Resources --

             Resource Name   Node Name    State     Status Message
             -------------   ---------    -----     --------------
   Resource: rshasp          node46       Offline   Offline
   Resource: rshasp          node47       Online    Online