From the man page of vgcreate:
It can not even only be different on distributions but even for Volume Groups on the same machine, if people used different values.
hi,
i have a query regarding the size of the LVM header. Since the LVM header of a bootable disk is always 2912KB. The header size of a non bootable disk is not fixed. In Bootable disk after the LVM header (2912 KB=5824 sectors)the user data starts or we can say LV extents starts.
If i extend any... (0 Replies)
hi all,
in my server there are some specific application files which are spread through out the server... these are spread in folders..sub-folders..chid folders...
please help me, how can i find the total size of these specific files in the server... (3 Replies)
When i run dmesg, I get the following message which clearly indicates that the file system is full. Please let me know what does (1 block extent) means in the following error message?
msgcnt 1 vxfs : mesg 001: vx_nospace - /dev/vg00/lvol4 file system full (1 block extent)
Thanks (6 Replies)
Hi,
I'm new to HP-UX.
I have LVM on /var with 92Gig. I would like to reduce it to create another LVM for Oracle client with 800 meg or so. How to do it. I'm running 11.iv3
Thanks (4 Replies)
#!/bin/sh
##########################################################################################################
#This script is being used for AOK application for cleaning up the .out files and zip it under logs directory.
# IBM
# Created
#For pdocap201/pdoca202 .out files for AOK
#1.... (0 Replies)
Hi Experts,
I have a script like
$ORACLE_HOME/bin/sqlplus username/password # << ENDSQL
set pagesize 0 trim on feedback off verify off echo off newp none timing off
set serveroutput on
set heading off
spool Schemaerrtmp.txt
select ' TIMESTAMP COMPUTER NAME ... (5 Replies)
Hi guys!
Could you tell me what's this figure about? (See the attached figure below.)
This is a representation of block allocation filesystem and extent allocation filesystem in Solaris.
Does this mean that in a block-based allocation, data are placed in individual blocks while in... (0 Replies)
Hello,
in one default UFS filesystem we have 8K block size (bsize) and 1K fragmentsize (fsize). At this scenary I thought all "FileSytem IO" will be 8K (or greater) but never smaller than the fragment size (1K). If a UFS fragment/blocksize is allwasy several ADJACENTS sectors on disk (in a ... (4 Replies)
Hi All,
I have one logical volume with size as 900G and it is mounted as xfs file system.
Now I want to reduce this partition to 500G.
So I followed the below steps.
unmount the mount point /home
Reduced the volume using the command
Now I remounted the partition.
But the problem... (3 Replies)
Discussion started by: kalpeer
3 Replies
LEARN ABOUT NETBSD
vgcreate
VGCREATE(8) System Manager's Manual VGCREATE(8)NAME
vgcreate - create a volume group
SYNOPSIS
vgcreate [--addtag Tag] [--alloc AllocationPolicy] [-A|--autobackup {y|n}] [-c|--clustered {y|n}] [-d|--debug] [-h|--help] [-l|--maxlogi-
calvolumes MaxLogicalVolumes] [-M|--metadatatypetype] [-p|--maxphysicalvolumes MaxPhysicalVolumes] [-s|--physicalextentsize PhysicalExtent-
Size[kKmMgGtT]] [-t|--test] [-v|--verbose] [--version] VolumeGroupName PhysicalVolumePath [PhysicalVolumePath...]
DESCRIPTION
vgcreate creates a new volume group called VolumeGroupName using the block special device PhysicalVolumePath previously configured for LVM
with pvcreate(8).
OPTIONS
See lvm for common options.
-c, --clustered {y|n}
If clustered locking is enabled, this defaults to y indicating that this Volume Group is shared with other nodes in the cluster.
If the new Volume Group contains only local disks that are not visible on the other nodes, you must specify --clustered n. If the
cluster infrastructure is unavailable on a particular node at a particular time, you may still be able to use such Volume Groups.
-l, --maxlogicalvolumes MaxLogicalVolumes
Sets the maximum number of logical volumes allowed in this volume group. The setting can be changed with vgchange. For volume
groups with metadata in lvm1 format, the limit and default value is 255. If the metadata uses lvm2 format, the default value is 0
which removes this restriction: there is then no limit.
-p, --maxphysicalvolumes MaxPhysicalVolumes
Sets the maximum number of physical volumes that can belong to this volume group. The setting can be changed with vgchange. For
volume groups with metadata in lvm1 format, the limit and default value is 255. If the metadata uses lvm2 format, the default value
is 0 which removes this restriction: there is then no limit. If you have a large number of physical volumes in a volume group with
metadata in lvm2 format, for tool performance reasons, you should consider some use of --metadatacopies 0 as described in pvcre-
ate(8).
-s, --physicalextentsize PhysicalExtentSize[kKmMgGtT]
Sets the physical extent size on physical volumes of this volume group. A size suffix (k for kilobytes up to t for terabytes) is
optional, megabytes is the default if no suffix is present. The default is 4 MB and it must be at least 1 KB and a power of 2.
Once this value has been set, it is difficult to change it without recreating the volume group which would involve backing up and
restoring data on any logical volumes. However, if no extents need moving for the new value to apply, it can be altered using
vgchange -s.
If the volume group metadata uses lvm1 format, extents can vary in size from 8KB to 16GB and there is a limit of 65534 extents in
each logical volume. The default of 4 MB leads to a maximum logical volume size of around 256GB.
If the volume group metadata uses lvm2 format those restrictions do not apply, but having a large number of extents will slow down
the tools but have no impact on I/O performance to the logical volume. The smallest PE is 1KB.
The 2.4 kernel has a limitation of 2TB per block device.
EXAMPLES
To create a volume group named test_vg using physical volumes /dev/hdk1, and /dev/hdl1 with default physical extent size of 4MB:
vgcreate test_vg /dev/sdk1 /dev/sdl1
SEE ALSO lvm(8), pvdisplay(8), pvcreate(8), vgdisplay(8), vgextend(8), vgreduce(8), lvcreate(8), lvdisplay(8), lvextend(8), lvreduce(8)Sistina Software UK LVM TOOLS 2.02.44-cvs (02-17-09) VGCREATE(8)