OS Patching technique with VxVM

OS Patching with VxVM

Check partition table of altroot. create underlying partitions if necessary. No need for the home volume. # /etc/vx/bin/vxmksdpart -g rootdg altroot-03 1 0x03 0x01 # /etc/vx/bin/vxmksdpart -g rootdg altroot-04 5 0x00 0x00 # /etc/vx/bin/vxmksdpart -g rootdg altroot-05 6 0x07 0x00 # /etc/vx/bin/vxmksdpart -g rootdg altroot-02 7 0x00 0x00   Remove plex's from altroot # vxplex dis rootvol-02 # vxplex dis swapvol-02   # vxplex dis usrvol-02 # vxplex dis usr-02 # vxplex dis var-02 # vxplex dis opt-02 # vxplex dis home-02 Make temporary volume and mount it # vxmake -U fsgen vol rootvoltmp plex=rootvol-02 # vxvol start rootvoltmp # fsck -y /dev/vx/dsk/rootvoltmp ** /dev/vx/dsk/rootvoltmp ** Last Mounted on / ** Phase 1 - Check Blocks and Sizes ** Phase 2 - Check Pathnames ** Phase 3 - Check Connectivity ** Phase 4 - Check Reference Counts UNREF FILE I=17005  OWNER=root MODE=100644 SIZE=262 MTIME=Mar 30 12:46 2001 CLEAR?  yes   UNREF FILE I=919349  OWNER=root MODE=100644 SIZE=0 MTIME=Mar 30 12:46 2001 LEAR?  yes   ** Phase 5 - Check Cyl groups FREE BLK COUNT(S) WRONG IN SUPERBLK SALVAGE?  yes   62098 files, 1636433 used, 6034540 free (12124 frags, 752802 blocks,  0.1% fragmentation)   ***** FILE SYSTEM WAS MODIFIED ***** # # mount /dev/vx/dsk/rootvoltmp /mnt # cd /mnt/etc backup /mnt/etc/vfstab, copy original vfstab, and edit /mnt/etc/vfstab to match partitions created in 1. Make sure to change the disk to that which is associated with altroot. # cp vfstab vfstab.disable # cp system system.disable # cp vfstab.prevm vfstab # vi /mnt/etc/vfstab Do not start volume manager at boot: # touch /mnt/etc/vx/reconfig.d/state.d/install-db Edit /etc/system and comment out: #rootdev:/pseudo/vxio@0:0 #set vxio:vol_rootdev_is_volume=1 Unmount /mnt and remove. # vxvol stop rootvoltmp # vxplex dis rootvol-02 # vxedit rm rootvoltmp Install patches and if it blows up your machine. # reboot -- vx-altroot Manually start Volume Manager. # vxiod set 10 # vxconfigd -d # vxdctl enable Attach the altroot plexes. # vxplex att rootvol rootvol-02 # vxplex att swapvol swapvol-02 # vxplex att usr usr-02 # vxplex att var var-02 # vxplex att opt opt-02 # vxplex att home home-02 Mark the rootdisk plexes as stale # vxmend fix stale rootvol-01 # vxmend fix stale swapvol-01 # vxmend fix stale usr-01 # vxmend fix stale var-01 # vxmend fix stale opt-01 # vxmend fix stale home-01 if altroot plex's are off line they must be turned on. Run vxprint and make sure! # vxmend on rootvol-02 # vxmend on swapvol-02 # vxmend on usr-02 # vxmend on var-02 # vxmend on opt-02 # vxmend on home-02 Mark altroot plexes as active # vxmend fix active rootvol-02 # vxmend fix active usr-02   # vxmend fix active var-02 # vxmend fix active opt-02 # vxmend fix active home-02 Restore original files # cp /etc/vfstab.disable /etc/vfstab # cp /etc/system.disable /etc/system # rm /etc/vx/reconfig.d/state.d/install-db Reboot from altroot and allow mirrors to sync. # reboot -- vx-altroot When mirrors are in sync. Reboot again and allow to boot from rootdisk. # reboot