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Question : extend filesystem
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Need to know how/if to extend filesystem to new space made available from san. For example, have filesystem /dev/sdf1 mounted on /u02 that has 247G space but need 500G more. Client has made available another 500G from san and now we're not sure how to extend u02 to include the additional space.
OS: Linux version 2.6.9-78.0.8.0.1.ELsmp ([email protected]racle.com) (gcc version 3.4.6 20060404 (Red Hat 3.4.6-10.0.1)) #1 SMP Wed Nov 19 16:39:14 EST 2008
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df -h output:
Filesystem Size Used Avail Use% Mounted on
/dev/sda1 20G 16G 3.4G 83% /
none 3.0G 0 3.0G 0% /dev/shm
/dev/sdc1 30G 5.1G 24G 18% /u01
/dev/sdf1 247G 232G 1.7G 100% /u02
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fdisk -l output:
Disk /dev/sda: 21.4 GB, 21495808000 bytes
255 heads, 63 sectors/track, 2613 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Device Boot Start End Blocks Id System
/dev/sda1 * 1 2613 20988891 83 Linux
Disk /dev/sdb: 12.8 GB, 12897484800 bytes
64 heads, 32 sectors/track, 12300 cylinders
Units = cylinders of 2048 * 512 = 1048576 bytes
Device Boot Start End Blocks Id System
/dev/sdb1 * 1 12300 12595184 83 Linux
Disk /dev/sdc: 32.2 GB, 32243712000 bytes
64 heads, 32 sectors/track, 30750 cylinders
Units = cylinders of 2048 * 512 = 1048576 bytes
Device Boot Start End Blocks Id System
/dev/sdc1 * 1 30750 31487984 83 Linux
Disk /dev/sdd: 268.4 GB, 268439650304 bytes
255 heads, 63 sectors/track, 32635 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Device Boot Start End Blocks Id System
/dev/sdd1 1 32635 262140606 83 Linux
Disk /dev/sde: 268.4 GB, 268439650304 bytes
255 heads, 63 sectors/track, 32635 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Device Boot Start End Blocks Id System
/dev/sde1 1 32635 262140606 83 Linux
Disk /dev/sdf: 268.4 GB, 268439650304 bytes
255 heads, 63 sectors/track, 32635 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Device Boot Start End Blocks Id System
/dev/sdf1 1 32635 262140606 83 Linux
Disk /dev/sdg: 536.8 GB, 536879300608 bytes
255 heads, 63 sectors/track, 65271 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk /dev/sdg doesn't contain a valid partition table
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cat /etc/fstab output:
# This file is edited by fstab-sync - see 'man fstab-sync' for details
LABEL=/ / ext3 defaults 1 1
none /dev/pts devpts gid=5,mode=620 0 0
none /dev/shm tmpfs defaults 0 0
none /proc proc defaults 0 0
none /sys sysfs defaults 0 0
LABEL=SWAP-sdb1 swap swap defaults 0 0
LABEL=/u01 /u01 ext3 defaults 1 2
LABEL=/u02 /u02 ext3 defaults 1 2
/dev/hda /media/cdrom auto pamconsole,exec,noauto,managed 0 0
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Answer : extend filesystem
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Hi,
I am afraid you can't. THe volume expansion is only possible under LVM (Logical Volume Manager) but your system thinks this is just a regular hard disk and it can not expand it.
To create a new LVM volume you can follow this procedure:
WARNINIG it is a destructive procedure make sure you've porperly backed all data prior to start :
- Just request a temporary volume with enough space to get all /u02 files form the SAN guy.
- mount it under a temp location such as /mnt
- Copy all /u02 files over the temporary volume.
- Create a LVM volume over the u02
# pvcreate /dev/sdf1
# vgcreate lv01 /dev/sdf1
# lvcreate -L747M -n root lv01
Create a filesystem over the new volume
# mke2fs /dev/lv01/root
# mount /dev/lv01/root /u02
now copy the temporary contents over the new volume.
edit your /etc/fstab and chenge this:
LABEL=/u02 /u02 ext3 defaults 1 2
into this:
/dev/lv01/root /u02 ext3 defaults 1 1
Now that you can always use vgexpand command whenever you add space.
Cheers,
K.
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