01-22-2004
Hi,
A physical disk is a single disk... a physical volume is what defines a group of physical disks ( it can be only one disk, but you can add more ), like in a RAID device...
The lspv will show you information about a physical volume on a volume group ( a volume group can be anything [ we're talking sbout disks ] that is grouped to look like one ).
It's not difficult, just learn the right terms...
10 More Discussions You Might Find Interesting
1. UNIX for Dummies Questions & Answers
I was in smit, checking on disc space, etc. and it appears that one of our physical volumes that is part of a large volume group, has no free physical partitions. The server is running AIX 5.1. What would be the advisable step to take in this instance? (9 Replies)
Discussion started by: markper
9 Replies
2. AIX
Hi!
Can anyone help me on how I can do a basic check on the Unix filesystems / physical volumes and logical volumes?
What items should I check, like where do I look at in smit? Or are there commands that I should execute?
I need to do this as I was informed by IBM that there seems to be... (1 Reply)
Discussion started by: chipahoys
1 Replies
3. HP-UX
Hi,
Someone please help me with how i can unmount and remove all the files systems from a cluster. This is being shared by two servers that are active_standby. (3 Replies)
Discussion started by: joeli
3 Replies
4. AIX
Hello All,
Can anybody please tell me what is the maximum limit of Physical IBM Power Machine which can be handled by single HMC at a single point of time?
Thanks,
Jenish (1 Reply)
Discussion started by: jenish_shah
1 Replies
5. UNIX for Dummies Questions & Answers
hi guys
I'm added a new disk to my server (virtual environment)
It used to be a Volume Group=Vol_Group01
and Logical Volume= Log_Vol_01_Data
and I see /dev/sdb
Disk /dev/sdb doesn't contain a valid partition table
Disk /dev/sdc: 133.1 GB, 133143986176 bytes
255 heads, 63... (3 Replies)
Discussion started by: karlochacon
3 Replies
6. UNIX for Dummies Questions & Answers
Hi,
I am new to unix. I am working on Red Hat Linux and side by side on AIX also. After reading the concepts of Storage, I am now really confused regarding the terminologies
1)Physical Volume
2)Volume Group
3)Logical Volume
4)Physical Partition
Please help me to understand these concepts. (6 Replies)
Discussion started by: kashifsd17
6 Replies
7. AIX
Hello everyone,
I just read that while creating a logical volume(LV) we can choose the region of the physical volume (PV) in which the LV should be created.
When I say region I mean: outer edge - outer middle - center - inner middle and inner edge.
Can anyone help me understand the utility... (11 Replies)
Discussion started by: adilyos
11 Replies
8. Linux
When installing Linux, I choose some default setting to use all the disk space.
My server has a single internal 250Gb SCSI disk. By default the install appears to have created 3 logical volumes
lv_root, lv_home and lv_swap.
fdisk -l shows the following
lab3.nms:/dev>fdisk -l
Disk... (2 Replies)
Discussion started by: jimthompson
2 Replies
9. Solaris
Generally, this is what we do:-
On primary, export 2 LUNs (add-vdsdev).
On primary, assign these disks to the ldom in question (add-vdisk).
On ldom, created mirrored zpool from these two disks.
On one server (which is older) we have:-
On primary, create mirrored zpool from the two LUNs.... (4 Replies)
Discussion started by: psychocandy
4 Replies
10. AIX
I want to remove hdisk1 from volume group diskpool_4 and migrate PV from hdisk1 to hdisk2 , but facing problems, so what is the quickest way to migratepv and remove hdisk1 --
# lspv | grep diskpool_4
hdisk1 00c7780e2e21ec86 diskpool_4 active
hdisk2 ... (2 Replies)
Discussion started by: filosophizer
2 Replies
LEARN ABOUT CENTOS
pvchange
PVCHANGE(8) System Manager's Manual PVCHANGE(8)
NAME
pvchange - change attributes of a physical volume
SYNOPSIS
pvchange [--addtag Tag] [-A|--autobackup {y|n}] [-d|--debug] [-f|--force] [--deltag Tag] [--metadataignore {y|n}] [-h|-?|--help]
[-t|--test] [-v|--verbose] [-a|--all] [-x|--allocatable {y|n}] [-u|--uuid] [PhysicalVolumePath...]
DESCRIPTION
pvchange allows you to change the allocation permissions of one or more physical volumes.
OPTIONS
See lvm(8) for common options.
-a, --all
If PhysicalVolumePath is not specified on the command line all physical volumes are searched for and used.
--metadataignore {y|n}
Ignore or un-ignore metadata areas on this physical volume. If metadata areas on a physical volume are ignored, LVM will not not
store metadata in the metadata areas present on this Physical Volume.
-u, --uuid
Generate new random UUID for specified physical volumes.
-x, --allocatable {y|n}
Enable or disable allocation of physical extents on this physical volume.
Example
Disallows the allocation of physical extents on this physical volume (possibly because of disk errors, or because it will be removed after
freeing it:
pvchange -x n /dev/sdk1
SEE ALSO
lvm(8), pvcreate(8)
Sistina Software UK LVM TOOLS 2.02.105(2)-RHEL7 (2014-03-26) PVCHANGE(8)