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Full Discussion: Unable To Extend the Size of a Logical Volume File System
Operating Systems HP-UX Unable To Extend the Size of a Logical Volume File System Post 302516998 by Rob Sandifer on Monday 25th of April 2011 07:43:42 PM
Old 04-25-2011
Unable To Extend the Size of a Logical Volume File System
Background:

Code:
# uname -a
HP-UX deedee B.11.23 U ia64 4294967295 unlimited-user license
deedee.rsn.hp.com:/

Code:
# bdf /opt
Filesystem              kbytes     used      avail     %used          Mounted on
/dev/vg00/lvol6     6553600   6394216   158144   98%             /opt

/opt is almost full and so lvol6 needs to be extended in size

When I try to extend lvol6 from 400 PE's to a new size of 493 PE's, I get the following:

Code:
# lvextend -l 493 /dev/vg00/lvol6
lvextend: Not enough free physical extents available.
Logical volume "/dev/vg00/lvol6" could not be extended.



I did a "pvdisplay -v" and discovered that all of the PE's in lvol6 are located on disk /dev/dsk/c8t0d1s2 /dev/dsk/c8t0d1s2 is part of
a SAN environment.

Running "pvdisplay -v /dev/dsk/c8t0d1s2"
shows that there are now zero Free PE available.

Code:
# pvdisplay -v /dev/dsk/c8t0d1s2 | more

--- Physical volumes ---
PV Name /dev/dsk/c8t0d1s2
PV Name /dev/dsk/c10t0d1s2 Alternate Link
VG Name /dev/vg00
PV Status available
Allocatable yes
VGDA 2
Cur LV 9
PE Size (Mbytes) 16
Total PE 3463
Free PE 0
Allocated PE 3463
Stale PE 0
IO Timeout (Seconds) default
Autoswitch On
Proactive Polling On

--- Distribution of physical volume ---
LV                            Name LE of LV       PE for LV
/dev/vg00/lvol1                 19                    19
/dev/vg00/lvol2                256                   256
/dev/vg00/lvol3                 33                    33
/dev/vg00/lvol4                 32                    32
/dev/vg00/lvol5                   2                     2
/dev/vg00/lvol6                400                   400
/dev/vg00/lvol7                384                   384
/dev/vg00/lvol8                288                   288
/dev/vg00/lvol9               2049                  2049

My question is this: Is it somehow possible to free up the extents shown for one of the other file systems, specifically, /dev/vg00/lvol9, and make them available for /dev/vg00/lvol6 ?

Thanks in advance!

Rob S.
Last edited by Neo; 04-25-2011 at 08:54 PM.. Reason: added code tags
 

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LEARN ABOUT DEBIAN

vgimportclone

VGIMPORTCLONE(8)					      System Manager's Manual						  VGIMPORTCLONE(8)

NAME

       vgimportclone - import and rename duplicated volume group (e.g. a hardware snapshot)

SYNOPSIS

       vgimportclone [-n|--basevgname VolumeGroupName] [-i|--import] PhysicalVolume [PhysicalVolume...]

DESCRIPTION

       vgimportclone is used to import a duplicated VG (e.g. hardware snapshot).  Duplicate VG(s) and PV(s) are not able to be used until they are
       made to coexist with the origin VG(s) and PV(s).  vgimportclone renames the VG associated with the specified PV(s) and changes the  associ-
       ated VG and PV UUIDs.

OPTIONS

       See lvm for common options.

       -n|--basevgname VolumeGroupName
	      By  default  the	snapshot  VG  will be renamed to the original name plus a numeric suffix to avoid duplicate naming (e.g. 'test_vg'
	      would be renamed to 'test_vg1').	This option will override the base VG name that is used for all  VG  renames.	If  a  VG  already
	      exists with the specified name a numeric suffix will be added (like the previous example) to make it unique.

       -i|--import
	      Import exported Volume Groups.  Otherwise VGs that have been exported will not be changed (nor will their associated PVs).

ENVIRONMENT VARIABLES

       LVM_BINARY
	      The LVM2 binary to use.  Defaults to "lvm".

EXAMPLES

       The  origin VG vg00 has origin PVs /dev/sda and /dev/sdb and the respective snapshot PVs are /dev/sdc and /dev/sdd.  To rename the VG asso-
       ciated with /dev/sdc and /dev/sdd from vg00 to vg00_snap (and to change associated VG and PV UUIDs) do:

	    vgimportclone --basevgname vg00_snap /dev/sdc /dev/sdd

SEE ALSO

       lvm(8)

Red Hat, Inc.						 LVM TOOLS 2.02.95(2) (2012-03-06)					  VGIMPORTCLONE(8)
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