01-24-2008
reducing /usr HP-UX 11i
Hi,
I've entered the HP-UX 11i server in single user mode, and increased the filesystem /usr by mistake using
lvextend -l 3092 /dev/vg00/lvol7
extendfs /dev/vg00/rlvol7
I put small letter "l" instead of "L".
and as a result of this mistake the /usr take all the free space in the volume group.
I don't have onlineJFS to make online reduce.
and i've a plenty of space at other file system.
this server is hp-blade which means i don't have cdr-rom, tape.
any idea how to reduce the /usr without using onlineJFS or reinstalling OS?
Thanks
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LEARN ABOUT SUSE
lvreduce
LVREDUCE(8) System Manager's Manual LVREDUCE(8)
NAME
lvreduce - reduce the size of a logical volume
SYNOPSIS
lvreduce [-A|--autobackup y|n] [-d|--debug] [-f|--force] [-h|-?|--help] [--noudevsync] {-l|--extents [-]LogicalExtentsNum-
ber[%{VG|LV|FREE|ORIGIN}] | -L|--size [-]LogicalVolumeSize[bBsSkKmMgGtTpPeE]} [-t|--test] [-v|--verbose] LogicalVolume[Path]
DESCRIPTION
lvreduce allows you to reduce the size of a logical volume. Be careful when reducing a logical volume's size, because data in the reduced
part is lost!!!
You should therefore ensure that any filesystem on the volume is resized before running lvreduce so that the extents that are to be removed
are not in use.
Shrinking snapshot logical volumes (see lvcreate(8) for information to create snapshots) is supported as well. But to change the number of
copies in a mirrored logical volume use lvconvert (8).
Sizes will be rounded if necessary - for example, the volume size must be an exact number of extents and the size of a striped segment must
be a multiple of the number of stripes.
OPTIONS
See lvm for common options.
-f, --force
Force size reduction without any question.
--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|FREE|ORIGIN}]
Reduce or set the logical volume size in units of logical extents. With the - sign the value will be subtracted from the logical
volume's actual size and without it the value will be taken as an absolute size. 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,
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.
-L, --size [-]LogicalVolumeSize[bBsSkKmMgGtTpPeE]
Reduce or set the logical volume size in units of megabytes. A size suffix of k for kilobyte, m for megabyte, g for gigabytes, t
for terabytes, p for petabytes or e for exabytes is optional. With the - sign the value will be subtracted from the logical vol-
ume's actual size and without it it will be taken as an absolute size.
Example
"lvreduce -l -3 vg00/lvol1" reduces the size of logical volume lvol1 in volume group vg00 by 3 logical extents.
SEE ALSO
lvchange(8), lvconvert(8), lvcreate(8), lvextend(8), lvm(8), lvresize(8), vgreduce(8)
Sistina Software UK LVM TOOLS 2.02.67(2) (2010-06-04) LVREDUCE(8)