Some AIX LVM commands

1)viewing the PV info # lspv hdisk0 00cedcc344f7bfe8 rootvg active hdisk2 00cedcc3d72aa40f popvg active hdisk1 00cedcc3d9cc99f6 catvg active # 2) Checking for catadata # df -g Filesystem GB blocks Free %Used Iused %Iused Mounted on /dev/hd4 0.44 0.29 35% 12553 16% / /dev/hd2 4.53 0.03 100% 42715 69% /usr /dev/hd9var 0.81 0.74 9% 4605 3% /var /dev/hd3 0.81 0.81 1% 257 1% /tmp /dev/hd1 0.03 0.03 2% 13 1% /home /dev/hd11admin 0.12 0.12 1% 5 1% /admin /proc - - - - - /proc /dev/hd10opt 0.62 0.37 41% 4689 6% /opt /dev/livedump 0.25 0.25 1% 4 1% /var/adm/ras/livedump /dev/softwarelv 9.38 1.28 87% 2620 1% /aiximages /dev/catlv 0.02 0.02 4% 17 1% /catadata # umount /catdata step 3:-unmounting the catadata # umount /catadata # df -g Filesystem GB blocks Free %Used Iused %Iused Mounted on /dev/hd4 0.44 0.29 35% 12553 16% / /dev/hd2 4.53 0.03 100% 42715 69% /usr /dev/hd9var 0.81 0.74 9% 4605 3% /var /dev/hd3 0.81 0.81 1% 257 1% /tmp /dev/hd1 0.03 0.03 2% 13 1% /home /dev/hd11admin 0.12 0.12 1% 5 1% /admin /proc - - - - - /proc /dev/hd10opt 0.62 0.37 41% 4689 6% /opt /dev/livedump 0.25 0.25 1% 4 1% /var/adm/ras/livedump /dev/softwarelv 9.38 1.28 87% 2620 1% /aiximages Setp 4:- Reducing the catvg with catlv into it, remember it has to be last lv in the vg to remove it. # reducevg -d catvg hdisk1 0516-914 rmlv: Warning, all data belonging to logical volume catlv on physical volume hdisk1 will be destroyed. rmlv: Do you wish to continue? y(es) n(o)? y rmlv: Logical volume catlv is removed. 0516-914 rmlv: Warning, all data belonging to logical volume loglv00 on physical volume hdisk1 will be destroyed. rmlv: Do you wish to continue? y(es) n(o)? y rmlv: Logical volume loglv00 is removed. ldeletepv: Volume Group deleted since it contains no physical volumes. # lspv hdisk0 00cedcc344f7bfe8 rootvg active hdisk2 00cedcc3d72aa40f popvg active hdisk1 00cedcc3d9cc99f6 None # Setp 5:-Check no catvg # lspv hdisk0 00cedcc344f7bfe8 rootvg active hdisk2 00cedcc3d72aa40f popvg active hdisk1 00cedcc3d9cc99f6 None # Step 6:-In case you donot want the VGID from PV u need in cluster, else no needed. # chdev -l hdisk1 -a pv=clear hdisk1 changed # lspv hdisk0 00cedcc344f7bfe8 rootvg active hdisk2 00cedcc3d72aa40f popvg active hdisk1 none None # =============================================================================================== Now let us do from the begining:- Step1:- To give PV id manually else while creating vg system will randomly assign the pvid # chdev -l hdisk1 -a pv=yes hdisk1 changed # lspv hdisk0 00cedcc344f7bfe8 rootvg active hdisk2 00cedcc3d72aa40f popvg active hdisk1 00cedcc3d9e2a55c None # Step2:- now will create vg and lv # mkvg -y catvg hdisk1 catvg # mklv -y catlv catvg 100m catlv # lspv hdisk0 00cedcc344f7bfe8 rootvg active hdisk2 00cedcc3d72aa40f popvg active hdisk1 00cedcc3d9e2a55c catvg active # lspv -l hdisk1 hdisk1: LV NAME LPs PPs DISTRIBUTION MOUNT POINT catlv 13 13 00..13..00..00..00 N/A # lsvg -l catvg catvg: LV NAME TYPE LPs PPs PVs LV STATE MOUNT POINT catlv jfs 13 13 1 closed/syncd N/A # Step3:- Now we will create FS on the LV # crfs -v jfs -d catlv -A yes -m /mydata Based on the parameters chosen, the new /mydata JFS file system is limited to a maximum size of 134217728 (512 byte blocks) New File System size is 212992 # mount /mydata # df -g Filesystem GB blocks Free %Used Iused %Iused Mounted on /dev/hd4 0.44 0.29 35% 12554 16% / /dev/hd2 4.53 0.03 100% 42715 69% /usr /dev/hd9var 0.81 0.74 9% 4605 3% /var /dev/hd3 0.81 0.81 1% 257 1% /tmp /dev/hd1 0.03 0.03 2% 13 1% /home /dev/hd11admin 0.12 0.12 1% 5 1% /admin /proc - - - - - /proc /dev/hd10opt 0.62 0.37 41% 4689 6% /opt /dev/livedump 0.25 0.25 1% 4 1% /var/adm/ras/livedump /dev/softwarelv 9.38 1.28 87% 2620 1% /aiximages /dev/catlv 0.10 0.10 4% 17 1% /mydata # Setp 4:- Check if u can write something on FS # pwd /mydata # ls lost+found ram sam # will meet with some more stuff next time.