| LIF Directory* | Contains a list of other disks in the volume group and whether or not they are bootable |
| PVRA | Contains imports PV-related information such as:
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| BDRA* | Specifies where the root filesystem is found |
| LIF* | Contains ISL, HPUX, AUTO, LABEL that are LIF files. These are put there when the mkboot and lvlnboot commands are run. |
| VGRA | Contain volume group description area (VGDA) and volume group status area (VGSA) |
| Physical Extents | Physical extents for the file system, swap, etc |
| Bad Block Pool | Provides alternate locations for bad blocks |
| pvchange | Allows you to change a physical volume is some way. for an example you can allow or disallow adding extents to this physical volume. |
| pvcreate | Is used to create a physical volume that will be part of a volume group. |
| pvdisplay | shows information about a physical volumes you specify |
| pvmove | you can move extents from one physical volume to other physical volumes. |
| mknod | this command is used to create th major/minors numbers of a volume group |
| vgcfgbackup | used to save the configuration of a volume group. |
| vgcfgrestore | used to restore the configuration of a volume group. |
| vgchange | makes a volume active or in-active |
| vgcreate | you can create a volume group and specify all of its parameters. |
| vgdisplay | display information related to a volume group |
| vgexport | remove a volume group from the system, but does not modify the logical volume information on the physical volumes. You can then import the volume group onto another system i.e in a cluster environment. |
| vgextend | Physical volumes can be added to a volume group by specifying the physical volume to be added to the volume group. |
| vgimport | used to import a volume group from another system |
| vgreduce | reduce the volume group by removing th specified physical volume. |
| vgremove | remove the volume group completely from the system |
| vgscan | rebuild the /etc/lvmtab file |
| vgsync | when a volume group become stale you can resync that volume which resync's all the physical extents in each mirrored logical volume in the volume group. |
| lvcreate | create a new logical volume. |
| lvchange | change the logical volume in some way |
| lvdisplay | display information on a specified logical volume |
| lvextend | increase the number of physical extents to a logical volume. You will need to use the extendfs after extending a logical volume. |
| extendfs | expands the filesystem within the logical volume. You would use fsadm if you have OnlineJFS installed. |
| mkboot | places boot utilities in boot area |
| lvlnboot | use this to sepup a logical volume to be a root, boot, primary swap or dump volume. This can be undo with lvrmboot. |
| lvsplit or lvmerge | are used to split or merge a logical volume that is mirrored |
| lvmmigrate | prepares a root filesystem in a disk partition for migration to a logical volume. You would use this if you had a partition to convert to a logical volume |
| lvreduce | decrease the number of physical extents allocated to a logical volume |
| lvremove | remove a logical volume from the volume group |
| lvrmboot | if you don't want a logical volume to be root, boot, primary swap or a dump device. |
| lvsync | when a logical volume becomes stale you can resync the logical volume |
| newfs | place a new flesystem on a logical volume |
| fsck | check/repair the integrity of a filesystem |
| fsadm | peforms a number of tasks when using a OnlineJFS sch as dfragmentation, resizing, online backup, etc |
| Create a new volume group, logical volume and filesystem | pvcreate /dev/rdsk/c0t1d0 |
| Create a stripped filesystem | lvcreate -i 3 -I 32 -L 24 -n lvol1 /dev/vg01 -i number of stripes |
| Mirror root and swap disk | pvcreate -B /dev/rdsk/c0t6d0 setboot -a 8/8.6.0 |
| replace a non-mirrored disk | lvreduce -m 0 -A n /dev/vg01/lvol1 /dev/dsk/cxtxdx vgcfgrestore -n /dev/vgXX /dev/rdsk/cxtxdx Notes: |
| replace a mirrored disk | vgcfgrestore -n /dev/vgXX /dev/rdsk/cxtxdx Notes: |
| replace mirrored boot disk | vgcfgrestore -n /dev/vg00 /dev/rdsk/cxtxdx Notes: |
| export and import a volume group | System One: System two: |
| extend VxFS file ssytem using onlineJFS | lvextend -L 800 /dev/vg01/lvol1 fsadm -F vxfs -b 800M /ora_data01 |
| change a logical volume to support largefiles | fsadm -F vxfs -o largefiles /dev/vg01/rlvol1 |
| display the boot area | lifls -Clv /dev/dsk/c0t6d0 |
| display boot information | lvlnboot -v /dev/vg00 |
| display all disks in the system | ioscan -funC disk |
| make a dump device | lvchange -C y /dev/vg00/dump (makes it contiguous) lvlnboot -d /dev/vg00/dump |
| display dump devices | lvlnboot -v |
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