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hector3rd 04-22-2008 12:08 AM

Extended a LV size, but df shows orig size, using DEBIAN ETCH, on a AMD64
 
Hi,

I extended the VG, PV,and LV sizes by 232GB from /dev/sdb.
lvscan and lvdisplay show proper size, but df -h does not.
Can someone clarify this for me, or show me what to do , so that
df -h shows the "real" size of 368GB, instead of the orig size of 135GB.

Thanks in advance!!
:-) Hector3rd

Output from lvm follows:
<<<<<<<<<<<<<<<<<<<<<<<<

century4:~# lvm
lvm> vgs -v
Finding all volume groups
Finding volume group "century4"
VG Attr Ext #PV #LV #SN VSize VFree VG UUID
century4 wz--n- 4.00M 3 5 0 614.57G 1.31G
lvm> pvscan -v
Wiping cache of LVM-capable devices
Wiping internal VG cache
Walking through all physical volumes
PV /dev/hda5 VG century4 lvm2 [148.81 GB / 0 free]
PV /dev/sda VG century4 lvm2 [232.88 GB / 904.00 MB free]
PV /dev/sdb VG century4 lvm2 [232.88 GB / 440.00 MB free]
Total: 3 [614.57 GB] / in use: 3 [614.57 GB] / in no VG: 0 [0 ]
lvm> lvscan -v
Finding all logical volumes
ACTIVE '/dev/century4/root' [6.68 GB] inherit
ACTIVE '/dev/century4/swap_1' [5.85 GB] inherit
ACTIVE '/dev/century4/home' [368.74 GB] inherit
ACTIVE '/dev/century4/opt' [50.00 GB] inherit
ACTIVE '/dev/century4/usrlocal' [182.00 GB] inherit
lvm> quit
Exiting.
century4:~# df -h
Filesystem Size Used Avail Use% Mounted on
/dev/mapper/century4-root
6.6G 3.0G 3.3G 48% /
tmpfs 1007M 0 1007M 0% /lib/init/rw
udev 10M 68K 10M 1% /dev
tmpfs 1007M 0 1007M 0% /dev/shm
/dev/hda1 236M 20M 204M 9% /boot
/dev/mapper/century4-home
135G 63G 66G 49% /home
/dev/mapper/century4-opt
50G 180M 47G 1% /opt
/dev/mapper/century4-usrlocal
180G 44G 127G 26% /usr/local
century4:~# lvdisplay /dev/century4/home
--- Logical volume ---
LV Name /dev/century4/home
VG Name century4
LV Write Access read/write
LV Status available
# open 1
LV Size 368.74 GB
Current LE 94397
Segments 2
Allocation inherit
Read ahead sectors 0
Block device 254:2

century4:~#

syg00 04-22-2008 12:20 AM

The filesystem doesn't know you have resized it's "partition" - resize that as well; how depends on the filesystem involved.

hector3rd 04-22-2008 12:29 AM

ext2 is the fs, how do I resize?
what step did I leave out to simply increase /home?

hector3rd 04-22-2008 12:31 AM

sorry, it is ext3 fs, but how do I check, just to make sure....
thx!!

hector3rd 04-22-2008 12:41 AM

When I execute the command mount, I get:
/dev/mapper/century4-home on /home type ext3 (rw)

syg00 04-22-2008 06:46 AM

resize2fs - see the manpage. ext3 is just ext2 plus a journal - the ext2 utilities (generally) are used on ext3.

hector3rd 04-22-2008 07:47 AM

Hi syg00,
I was about to tar/move my data, then re-partition the lv to get all the space, then move/untar back the data.
But, this command is much easier.
Many thanks for the advice.


Hector3rd

hector3rd 04-22-2008 07:48 AM

This is excellent support.

hector3rd 04-23-2008 05:36 AM

This thread is now solved. See below.

century4:~# df -h
/dev/mapper/century4-home
135G 63G 66G 49% /home
century4:~# lvdisplay /dev/century4/home
--- Logical volume ---
LV Name /dev/century4/home
VG Name century4
LV Write Access read/write
LV Status available
# open 1
LV Size 368.74 GB
Current LE 94397
Segments 2
Allocation inherit
Read ahead sectors 0
Block device 254:2

century4:~# resize2fs /dev/century4/home
resize2fs 1.40-WIP (14-Nov-2006)
Filesystem at /dev/century4/home is mounted on /home; on-line resizing required
old desc_blocks = 9, new_desc_blocks = 24
Performing an on-line resize of /dev/century4/home to 96662528 (4k) blocks.
The filesystem on /dev/century4/home is now 96662528 blocks long.

century4:~# df -h
Filesystem Size Used Avail Use% Mounted on
/dev/mapper/century4-home
363G 63G 283G 19% /home


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