asked on
RHEL 6 and resize2fs
I performed the following:
Shouldn't home have been resized to 40G, its LV is showing 50GiB
[root@ex5b tmp]# df
Filesystem 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 40G
resize2fs 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
Shouldn't home have been resized to 40G, its LV is showing 50GiB
Unix OSLinux
Last Comment
wesly_chen
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Difference betwween lvreduce and lvresize:
lvreduce is used to shrink an LV, while lvresize can be used to shrink as well as to extend a logical volume.
wmp
lvreduce is used to shrink an LV, while lvresize can be used to shrink as well as to extend a logical volume.
wmp
OK, you have umount /home.
After lvresize, run resize2fs again
# resize2fs /dev/vg_ex5b/lv_home
After lvresize, run resize2fs again
# resize2fs /dev/vg_ex5b/lv_home
after resize2fs you must run lvreduve to shrink the logical cvolume as well.
lvreduce -L 40G /dev/vg_ex5b/lv_home
wmp