[root@ex5b tmp]# dfFilesystem 1K-blocks Used Available Use% Mounted on/dev/mapper/vg_ex5b-lv_root 51606140 48632104 352596 100% /tmpfs 66073880 0 66073880 0% /dev/shm/dev/sda1 495844 60297 409947 13% /boot[root@ex5b tmp]# lvdisplay --- Logical volume --- LV Name /dev/vg_ex5b/lv_root VG Name vg_ex5b LV UUID yurcUj-lMPk-DPvL-Voo4-OEtS-Z92g-TPQURp LV Write Access read/write LV Status available # open 1 LV Size 50.00 GiB Current LE 12800 Segments 1 Allocation inherit Read ahead sectors auto - currently set to 256 Block device 253:0 --- Logical volume --- LV Name /dev/vg_ex5b/lv_home VG Name vg_ex5b LV UUID 4X2SCc-pTkY-x3mU-sdYY-6LF6-Z9xm-MD6wP0 LV Write Access read/write LV Status available # open 0 LV Size 50.00 GiB Current LE 12800 Segments 1 Allocation inherit Read ahead sectors auto - currently set to 256 Block device 253:2 --- Logical volume --- LV Name /dev/vg_ex5b/lv_swap VG Name vg_ex5b LV UUID I1zVVz-njSc-v4GB-r3VO-X0br-GmPg-PrAWtX LV Write Access read/write LV Status available # open 1 LV Size 128.16 GiB Current LE 32808 Segments 1 Allocation inherit Read ahead sectors auto - currently set to 256 Block device 253:1[root@ex5b tmp]# resize2fs /dev/vg_ex5b/lv_home 40Gresize2fs 1.41.12 (17-May-2010)Resizing the filesystem on /dev/vg_ex5b/lv_home to 10485760 (4k) blocks.The filesystem on /dev/vg_ex5b/lv_home is now 10485760 blocks long.[root@ex5b tmp]# lvdisplay --- Logical volume --- LV Name /dev/vg_ex5b/lv_root VG Name vg_ex5b LV UUID yurcUj-lMPk-DPvL-Voo4-OEtS-Z92g-TPQURp LV Write Access read/write LV Status available # open 1 LV Size 50.00 GiB Current LE 12800 Segments 1 Allocation inherit Read ahead sectors auto - currently set to 256 Block device 253:0 --- Logical volume --- LV Name /dev/vg_ex5b/lv_home VG Name vg_ex5b LV UUID 4X2SCc-pTkY-x3mU-sdYY-6LF6-Z9xm-MD6wP0 LV Write Access read/write LV Status available # open 0 LV Size 50.00 GiB Current LE 12800 Segments 1 Allocation inherit Read ahead sectors auto - currently set to 256 Block device 253:2 --- Logical volume --- LV Name /dev/vg_ex5b/lv_swap VG Name vg_ex5b LV UUID I1zVVz-njSc-v4GB-r3VO-X0br-GmPg-PrAWtX LV Write Access read/write LV Status available # open 1 LV Size 128.16 GiB Current LE 32808 Segments 1 Allocation inherit Read ahead sectors auto - currently set to 256 Block device 253:1
after resize2fs you must run lvreduve to shrink the logical cvolume as well.
lvreduce -L 40G /dev/vg_ex5b/lv_home
wmp