Re: ext3 Partition 6GB less than underlying logical volume even after resizing using resize2fs
On 4/6/07, Douglas Allan Tutty <dtutty@porchlight.ca> wrote:
On Fri, Apr 06, 2007 at 09:58:41PM +0530, Siju George wrote:
> On 4/6/07, Douglas Allan Tutty <dtutty@porchlight.ca> wrote:
> >On Fri, Apr 06, 2007 at 06:52:30PM +0530, Siju George wrote:
> >> I got a Server Installed with LVM by a third party.
> >> the /var/www is on LV /dev/vg1/www
> >> df -h Shows /var/www is only 394 GB
> >> whereas lvdisplay shows /dev/vg1/www to be 400 GB
> >
> >I use JFS for everything, running Etch with its 2.6 kernel and I haven't
> >had any problems.
> >
>
> Have you used JFS on LVM with large sized Logical Volumes and extended
> online with the syntax
>
> mount -o remount,resize /home
>
> without specifying file system size in blocks as in
>
> mount -o remount,resize=1048576 /home
I have JFS on LVM on raid1.
I have been chicken to resize my / fs (its a bit small) until Etch is
stable. I plan to do this when it is stable after I've downloaded and
burned CD1.
Since you already have LVM set up, why not create an LV, put JFS on it,
extend the LV, then resize the JFS and see how it goes?
Well it Goes very well :-)
Surprisingly easy. My Apache was running with files from /var/www and
is still doing good :-)
Details below. changed the fstab for jfs from ext3
===========================================================================
websrv-1:/var/www# cat /etc/fstab
# /etc/fstab: static file system information.
#
# <file system> <mount point> <type> <options> <dump> <pass>
proc /proc proc defaults 0 0
/dev/sda2 / ext3 defaults,errors=remount-ro 0 1
/dev/sda1 /boot ext3 defaults 0 2
/dev/mapper/vg1-home /home reiserfs defaults 0 2
/dev/mapper/vg1-tmp /tmp reiserfs defaults 0 2
/dev/mapper/vg1-usr /usr reiserfs defaults 0 2
/dev/mapper/vg1-var /var reiserfs defaults 0 2
/dev/mapper/vg1-log /var/log reiserfs defaults 0 2
/dev/mapper/vg1-www /var/www jfs defaults 0 2
/dev/mapper/vg1-swap none swap sw 0 0
/dev/hda /media/cdrom0 udf,iso9660 user,noauto 0 0
/dev/fd0 /media/floppy0 auto rw,user,noauto 0 0
websrv-1:/var/www# df -h
Filesystem Size Used Avail Use% Mounted on
/dev/sda2 1.9G 140M 1.7G 8% /
tmpfs 2.0G 0 2.0G 0% /lib/init/rw
udev 10M 40K 10M 1% /dev
tmpfs 2.0G 0 2.0G 0% /dev/shm
/dev/sda1 274M 24M 237M 9% /boot
/dev/mapper/vg1-home 2.0G 33M 2.0G 2% /home
/dev/mapper/vg1-tmp 2.0G 33M 2.0G 2% /tmp
/dev/mapper/vg1-usr 5.0G 249M 4.8G 5% /usr
/dev/mapper/vg1-var 10G 190M 9.9G 2% /var
/dev/mapper/vg1-log 31G 45M 31G 1% /var/log
/dev/mapper/vg1-www 390G 49M 390G 1% /var/www
websrv-1:/var/www# lvdisplay /dev/vg1/www
--- Logical volume ---
LV Name /dev/vg1/www
VG Name vg1
LV UUID qEaBfH-1fg5-f7Qg-VHfZ-azNM-beaf-vNbljL
LV Write Access read/write
LV Status available
# open 1
LV Size 390.00 GB
Current LE 99840
Segments 1
Allocation inherit
Read ahead sectors 0
Block device 254:6
websrv-1:/var/www# lvextend -L395G /dev/vg1/www
Extending logical volume www to 395.00 GB
Logical volume www successfully resized
websrv-1:/var/www# lvdisplay /dev/vg1/www
--- Logical volume ---
LV Name /dev/vg1/www
VG Name vg1
LV UUID qEaBfH-1fg5-f7Qg-VHfZ-azNM-beaf-vNbljL
LV Write Access read/write
LV Status available
# open 1
LV Size 395.00 GB
Current LE 101120
Segments 1
Allocation inherit
Read ahead sectors 0
Block device 254:6
websrv-1:/var/www# df -h
Filesystem Size Used Avail Use% Mounted on
/dev/sda2 1.9G 140M 1.7G 8% /
tmpfs 2.0G 0 2.0G 0% /lib/init/rw
udev 10M 40K 10M 1% /dev
tmpfs 2.0G 0 2.0G 0% /dev/shm
/dev/sda1 274M 24M 237M 9% /boot
/dev/mapper/vg1-home 2.0G 33M 2.0G 2% /home
/dev/mapper/vg1-tmp 2.0G 33M 2.0G 2% /tmp
/dev/mapper/vg1-usr 5.0G 249M 4.8G 5% /usr
/dev/mapper/vg1-var 10G 190M 9.9G 2% /var
/dev/mapper/vg1-log 31G 45M 31G 1% /var/log
/dev/mapper/vg1-www 390G 49M 390G 1% /var/www
websrv-1:/var/www# mount -o remount,resize /var/www
websrv-1:/var/www# df -h
Filesystem Size Used Avail Use% Mounted on
/dev/sda2 1.9G 140M 1.7G 8% /
tmpfs 2.0G 0 2.0G 0% /lib/init/rw
udev 10M 40K 10M 1% /dev
tmpfs 2.0G 0 2.0G 0% /dev/shm
/dev/sda1 274M 24M 237M 9% /boot
/dev/mapper/vg1-home 2.0G 33M 2.0G 2% /home
/dev/mapper/vg1-tmp 2.0G 33M 2.0G 2% /tmp
/dev/mapper/vg1-usr 5.0G 249M 4.8G 5% /usr
/dev/mapper/vg1-var 10G 190M 9.9G 2% /var
/dev/mapper/vg1-log 31G 45M 31G 1% /var/log
/dev/mapper/vg1-www 395G 50M 395G 1% /var/www
websrv-1:/var/www#
======================================================================
I started, like everyone else, with ext2. I used to live in an area
with frequent power failures without a UPS. I tried ext3 but still had
fs problems. I tried reiser; ditto. Once JFS came out, I tried it and
it has been great.
Thankyou so much :-) That is good news.
How about JFS's Speed compared to ext3, ReiserFS. XFS etc in your observation?
LVM/raid is new to me since I installed Etch on my new box. I havn't
tried a resize yet.
Thankyou so much Dough for the info.
I think i'll stick to JFS for the /var/www partition.
Kind Regards
Siju
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