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Sun Open Telecommunications Platform 1.1 Installation and Administration Guide

ProcedureTo Create Shared Storage on the Clustered OTP System

Caution – Caution –

Set the hard drive variables according to your cluster settings. Failure to do so will result in OTP high availability framework installation failure. The following steps must be performed on each host in your clustered OTP system, including the first OTP host.

  1. Create the shared storage meta database on all hosts in the clustered OTP system.

    The following steps must be performed for each host in the clustered OTP system.

    1. Log in to the as root (su - root) on the clustered OTP host.

    2. Determine the drive on which root is mounted and the available free space.

      Type prtvtoc `mount | awk '/^\/ / { print $3 }'` to list the hard drive slices and available space.

      For example:


      # prtvtoc `mount | awk '/^\/ / { print $3 }'` 
* /dev/rdsk/c0t0d0s0 partition map
*
* Dimensions:
*     512 bytes/sector
*     424 sectors/track
*      24 tracks/cylinder
*   10176 sectors/cylinder
*   14089 cylinders
*   14087 accessible cylinders
*
* Flags:
*   1: unmountable
*  10: read-only
*
* Unallocated space:
*       First     Sector    Last
*       Sector     Count    Sector 
*    63620352  79728960 143349311
*
*                          First     Sector    Last
* Partition  Tag  Flags    Sector     Count    Sector  Mount Directory
       0      2    00    8201856  51205632  59407487   /
       1      3    01          0   8201856   8201855
       2      5    00          0 143349312 143349311
       3      0    00   59407488   2106432  61513919   /globaldevices
       7      0    00   61513920   2106432  63620351

    3. Create the database.

      Type metadb -a -f -c 6 disk slice where disk slice is an available file system.

      For example, based on the example in the previous step:


      # metadb -a -f -c 6 c0t0d0s7

  2. Create the shared storage files on the first OTP host only.

    The first OTP host must be connected to the shared storage.

    1. Log in to the first OTP host as root (su - root).

    2. Type scdidadm to determine which disks are seen on all nodes of the clustered OTP system and choose one to be the shared disk to the metaset.

      In the following example d4, d5, d6, and d7 are shared disks. They are displayed as connected to more than one node in the listing.


      # /usr/cluster/bin/scdidadm -L
1   otpclient1:/dev/rdsk/c1t0d0    /dev/did/rdsk/d1
2   otpclient1:/dev/rdsk/c2t0d0    /dev/did/rdsk/d2
3   otpclient1:/dev/rdsk/c2t1d0    /dev/did/rdsk/d3
4   otpclient1:/dev/rdsk/c3t600C0FF000000000092C187A9755BE14d0 /dev/did/rdsk/d4
4   otpclient2:/dev/rdsk/c3t600C0FF000000000092C187A9755BE14d0 /dev/did/rdsk/d4
5   otpclient1:/dev/rdsk/c3t600C0FF000000000092C187A9755BE13d0 /dev/did/rdsk/d5
5   otpclient2:/dev/rdsk/c3t600C0FF000000000092C187A9755BE13d0 /dev/did/rdsk/d5
6   otpclient1:/dev/rdsk/c3t600C0FF000000000092C187A9755BE12d0 /dev/did/rdsk/d6
6   otpclient2:/dev/rdsk/c3t600C0FF000000000092C187A9755BE12d0 /dev/did/rdsk/d6
7   otpclient1:/dev/rdsk/c3t600C0FF000000000092C187A9755BE11d0 /dev/did/rdsk/d7
7   otpclient2:/dev/rdsk/c3t600C0FF000000000092C187A9755BE11d0 /dev/did/rdsk/d7
8   otpclient2:/dev/rdsk/c1t0d0    /dev/did/rdsk/d8
9   otpclient2:/dev/rdsk/c2t0d0    /dev/did/rdsk/d9
10  otpclient2:/dev/rdsk/c2t1d0    /dev/did/rdsk/d10

    3. Add the additional OTP hosts.

      Type metaset -s sps–dg -a -h otpclient-1 otpclient-n where otpclient-1 otpclient-n is the list of OTP hosts separated by a space. For example:


      # metaset -s sps–dg -a -h otpclient1 otpclient2 otpclient3 \
  otpclient4 otpclient5 otpclient6 otpclient7 otpclient8
      Caution – Caution –

      Only the nodes connected to the shared storage (displayed as such in the scdidadm -L output) should be added to the metaset.

    4. Type metaset -s sps–dg -a shared-disk to add the shared disk to the metaset.

      In the following example, the d7 disk is assigned as the shared disk:


      # metaset -s sps–dg -a /dev/did/rdsk/d7

    5. Type metainit -s sps-dg d0 1 1 /dev/did/rdsk/d7s0

    6. Type newfs /dev/md/sps–dg/rdsk/d0

    7. On a two-host cluster only, set up the mediator hosts for the sps-dg disk group.

      Type metaset -s sps–dg -a -m otpclient1 otpclient2 where otpclient1 otpclient2 are the OTP hosts separated by a space.

      Caution – Caution –

      Only the nodes connected to the shared storage (displayed as such in the scdidadm -L output) should be added to the metaset.

    8. Type metaset -s sps-dg to verify the mediator host setup.

      The following example shows hosts otpclient1 and otpclient2 set up as mediator hosts.

      The following example shows hosts otpclient1 and otpclient2 in a setup for 2 node OTP system or pair + N topology cluster:


      # metaset
Set name = sps–dg
Host                Owner
  otpclient1         Yes
  otpclient2
Mediator Host(s)    Aliases
  otpclient1
  otpclient2
d7   Yes

  3. Update the /etc/vfstab file on all OTP hosts.

    The following steps must be performed on each clustered OTP host.

    1. Log in to theOTP host as root (su - root).

    2. Update the /etc/vfstab file.

      Type echo /dev/md/sps-dg/dsk/d0 /dev/md/sps-dg/rdsk/d0 /var/otp ufs 2 no global,logging >>/etc/vfstab

    3. Type mkdir -p /var/otp

Next Steps