node mounted mounted over vfs date options -------- --------------- --------------- ------ ------------ ---------------  /var/vio/SSP/KSYS_rbRMHA_1/D_E_F_A_U_L_T_061310  /var/vio/SSP/KSYS_rbRMHA_1/D_E_F_A_U_L_T_061310 poolfs Jan 18 11:20 # grep poolfs /etc/vfs poolfs 20 /usr/sbin/pooladm none # clcmd df -g /var/vio/SSP/KSYS_rbRMHA_1/D_E_F_A_U_L_T_061310 ------------------------------- NODE rt13v2.ausprv.stglabs.ibm.com ------------------------------- Filesystem GB blocks Free %Used Iused %Iused Mounted on /var/vio/SSP/KSYS_rbRMHA_1/D_E_F_A_U_L_T_061310 19.88 19.36 3% - - /var/vio/SSP/KSYS_rbRMHA_1/D_E_F_A_U_L_T_061310 ------------------------------- NODE rt13v1.ausprv.stglabs.ibm.com ------------------------------- Filesystem GB blocks Free %Used Iused %Iused Mounted on /var/vio/SSP/KSYS_rbRMHA_1/D_E_F_A_U_L_T_061310 19.88 19.36 3% - - /var/vio/SSP/KSYS_rbRMHA_1/D_E_F_A_U_L_T_061310 ------------------------------- NODE rt14v1.ausprv.stglabs.ibm.com ------------------------------- Filesystem GB blocks Free %Used Iused %Iused Mounted on /var/vio/SSP/KSYS_rbRMHA_1/D_E_F_A_U_L_T_061310 19.88 19.36 3% - - /var/vio/SSP/KSYS_rbRMHA_1/D_E_F_A_U_L_T_061310 ------------------------------- NODE rt14v2.ausprv.stglabs.ibm.com ------------------------------- Filesystem GB blocks Free %Used Iused %Iused Mounted on /var/vio/SSP/KSYS_rbRMHA_1/D_E_F_A_U_L_T_061310 19.88 19.36 3% - - /var/vio/SSP/KSYS_rbRMHA_1/D_E_F_A_U_L_T_061310 # For more information about the  pooladm  options that are used in Example 2-85 on page 123,  run the  pooladm help  and  pooladm pool help  commands. The VIOS node that manages the  SSP database is known as a database node (DBN). Some details about the way that the  VIOS node that manages the SSP database regains access to the file system of the SSP  cluster pool are described in the “Problem summary” and “Problem conclusion” sections of  APAR IJ08692: VIOS SSP CANNOT ELECT DBN . Though APAR IJ08692 applies to AIX 6.1 and was fixed in VIOS 2.2.6.32, we expect the  functions that are described to also be relevant for VIOS V3.1 and subsequent versions. Going further with our SSP cluster examination, we see a PostgreSQL database server  instance that runs on the DBN node under the control of the  vios_daemon  subsystem  (Example 2-86). Example 2-86 Database server instance on the DBN node # lssrc -ls vio_daemon|grep DBN DBN NODE ID: 43947aac1b4111e9803e001018affe76  DBN Role: Other  124  Implementing IBM VM Recovery Manager for IBM Power Systems