07-21-2008
In HPUX the default disk manager is LVM. So steps as per LVM would be:
1) #vgdisplay VOLGRPNAME
for e.g. vgdisplay /dev/vg01
This should be done to check whether u have enough extents free to create a file system of the required size. Also just make sure the the Physical volumes or Hard disks are mirrored or not. Bcos If mirrored then the Free PEs available should be divided by 2 for 2 no. of hard disks.
2) #lvcreate -L SizeM (-n lvname) /dev/vg01
-n is optional u can give any name u like or the filesystem name being created. for .e.g lvcreate -L 100M -n mytmp /dev/vg01
This will create LV of size 100MB /dev/vg01/mytmp and /dev/vg01/rmytmp or else without -n would create /dev/vg01/lvol6 and /dev/vg01/rlvol6, if lvol5 already exists.
3) Now time to create FIlesystem.
Remember the default File system is mentioned on most UNIX systems and so on HPUX system in /etc/default/fs. The default mentioned is VXFS if u have BASE JFS product atleast installed or else will be HFS.
#newfs /dev/vg01/rmytmp
The above will create a new VXFS filesystem with NOLARGEFILES and NOQUOTA arrangement. If u want to enable them then u will need to modify the cmd line like
#newfs -o largefiles,quota /dev/vg01/rmytmp
This is appropriate for files being created above 2GB in size and u can put quota system for users too.
NOTE: the lv name should be starting with 'r' like 'rmytmp'.
4) To make the filesystem available after reboot make the entry in /etc/fstab file.
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LEARN ABOUT OSF1
lvextend
LVEXTEND(8) System Manager's Manual LVEXTEND(8)
NAME
lvextend - extend the size of a logical volume
SYNOPSIS
lvextend [--alloc AllocationPolicy] [-A|--autobackup y|n] [-d|--debug] [-h|-?|--help] [--noudevsync] [-i|--stripes Stripes [-I|--stripesize
StripeSize]] {-l|--extents [+]LogicalExtentsNumber[%{VG|LV|PVS|FREE|ORIGIN}] | -L|--size [+]LogicalVolumeSize[bBsSkKmMgGtTpPeE]}
[-f|--force] [-n|--nofsck] [-r|--resizefs] [-t|--test] [-v|--verbose] LogicalVolumePath [PhysicalVolumePath[:PE[-PE]]...]
DESCRIPTION
lvextend allows you to extend the size of a logical volume. Extension of snapshot logical volumes (see lvcreate(8) for information to cre-
ate snapshots) is supported as well. But to change the number of copies in a mirrored logical volume use lvconvert(8).
OPTIONS
See lvm for common options.
--noudevsync
Disable udev synchronisation. The process will not wait for notification from udev. It will continue irrespective of any possible
udev processing in the background. You should only use this if udev is not running or has rules that ignore the devices LVM2 cre-
ates.
-l, --extents [+]LogicalExtentsNumber[%{VG|LV|PVS|FREE|ORIGIN}]
Extend or set the logical volume size in units of logical extents. With the + sign the value is added to the actual size of the
logical volume and without it, the value is taken as an absolute one. The number can also be expressed as a percentage of the total
space in the Volume Group with the suffix %VG, relative to the existing size of the Logical Volume with the suffix %LV, of the
remaining free space for the specified PhysicalVolume(s) with the suffix %PVS, as a percentage of the remaining free space in the
Volume Group with the suffix %FREE, or (for a snapshot) as a percentage of the total space in the Origin Logical Volume with the
suffix %ORIGIN. The resulting value is rounded upward.
-L, --size [+]LogicalVolumeSize[bBsSkKmMgGtTpPeE]
Extend or set the logical volume size in units of megabytes. A size suffix of M for megabytes, G for gigabytes, T for terabytes, P
for petabytes or E for exabytes is optional. With the + sign the value is added to the actual size of the logical volume and with-
out it, the value is taken as an absolute one.
-i, --stripes Stripes
Gives the number of stripes for the extension. Not applicable to LVs using the original metadata LVM format, which must use a sin-
gle value throughout.
-I, --stripesize StripeSize
Gives the number of kilobytes for the granularity of the stripes. Not applicable to LVs using the original metadata LVM format,
which must use a single value throughout.
StripeSize must be 2^n (n = 2 to 9)
-f, --force
Proceed with size extension without prompting.
-n, --nofsck
Do not perform fsck before extending filesystem when filesystem requires it. You may need to use --force to proceed with this
option.
-r, --resizefs
Resize underlying filesystem together with the logical volume using fsadm(8).
Examples
"lvextend -L +54 /dev/vg01/lvol10 /dev/sdk3" tries to extend the size of that logical volume by 54MB on physical volume /dev/sdk3. This is
only possible if /dev/sdk3 is a member of volume group vg01 and there are enough free physical extents in it.
"lvextend /dev/vg01/lvol01 /dev/sdk3" tries to extend the size of that logical volume by the amount of free space on physical volume
/dev/sdk3. This is equivalent to specifying "-l +100%PVS" on the command line.
"lvextend -L+16M vg01/lvol01 /dev/sda:8-9 /dev/sdb:8-9"
tries to extend a logical volume "vg01/lvol01" by 16MB using physical extents /dev/sda:8-9 and /dev/sdb:8-9 for allocation of extents.
SEE ALSO
fsadm(8), lvm(8), lvcreate(8), lvconvert(8), lvreduce(8), lvresize(8), lvchange(8)
Sistina Software UK LVM TOOLS 2.02.95(2) (2012-03-06) LVEXTEND(8)