Dependencies needed:
Kernel module (version 2.6.9+):
Device Drivers > Multi-device support (RAID and LVM) > Device Mapper Support (CONFIG_BLK_DEV_DM)
Associated kernel module:
dm_mod <\/p>\n
Package:
lvm2 – lvm tools
libdevmapper<\/p>\n
Show LVM version:
lvm version<\/p>\n
Create the physical disks:
pvcreate \/dev\/hda
pvcreate \/dev\/hdb
pvcreate \/dev\/hdc1
pvcreate \/dev\/hdc2<\/p>\n
Show allocated Physical volumes:
pvscan
pvdisplay
lvm pvs<\/p>\n
Setup a volume group:
vgcreate vg_name \/dev\/hda \/dev\/hdb \/dev\/hdc1 \/dev\/hdc2<\/p>\n
Display a volume group:
vgdisplay
lvm vgs<\/p>\n
Display a logical volume:
lvdisplay
lvm lvs<\/p>\n
Create Logical Volume:
Sets the size to 1GB
lvcreate -L1G -n lv_name vg_name<\/p>\n
Activate\/deactivate a volume group:
vgchange -a y vg_name #Activates: needed after each reboot!!
# This makes it show up as an entry in \/dev\/
vgchange -a n vg_name #Deactivates<\/p>\n
Create the file system (choose one):
mk2fs \/dev\/vg_name\/lv_name # create ext2 fs
mkfs.ext3 \/dev\/VolGroupBAK\/lv_BAK # create ext2 fs
mkfs.ext3 \/dev\/VolGroupBAK\/lv_BAK # create ext3 fs
mkreiserfs \/dev\/VolGroupBAK\/lv_BAK # create reiserfs (reiserfs utils needed)
mkfs.xfs \/dev\/VolGroupBAK\/lv_BAK # create xfs (xfsprogs package needed)
jfs_mkfs \/dev\/VolGroupBAK\/lv_BAK # create jfs (jfsutils package needed)<\/p>\n
Mount the File System:
mount \/dev\/vg_name\/lv_name \/mnt\/point<\/p>\n
Add disks to volume groups:
Create the new physical volumes
pvcreate \/dev\/hdd1
pvcreate \/dev\/hdd2<\/p>\n
Add physical volumes to volume group
vgextend vg_name \/dev\/hdd1
vgextend vg_name \/dev\/hdd2<\/p>\n
Unmount logical volume to extend
unmount \/dev\/vg_name\/lv_name<\/p>\n
Grow lv by 1GB
lvextend -L+1G \/dev\/vg_name\/lv_name<\/p>\n
Resize the underlying filesystem to fit (choose one)
resize2fs \/dev\/vg_name\/lv_name # grow ext2\/3 to match
resize_reiserfs -f \/dev\/vg_name\/lv_name # grow reiserfs online
resize_reiserfs \/dev\/vg_name\/lv_name # grow reiserfs offline
xfs_growfs \/mount_pt # grow xfs online (must be mounted to resize)
mount -o remount,resize \/home # grow jfs online (must be mounted)<\/p>\n
Remount logical volume
mount \/dev\/vg_name\/lv_name # remount if unmounted<\/p>\n
Remove a Logical Volume:
unmount \/dev\/vg_name\/lv_name # unmount any mounted lv
lvremove \/dev\/vg_name\/lv_name # remove any lv<\/p>\n
Remove a volume Group:
All logical volumes in group must be removed first.
vgchange -a n vg_name # deactivate vg
vgremove vg_name # removes vg<\/p>\n","protected":false},"excerpt":{"rendered":"
Dependencies needed:Kernel module (version 2.6.9+):Device Drivers > Multi-device support (RAID and LVM) > Device Mapper Support (CONFIG_BLK_DEV_DM)Associated kernel module:dm_mod <\/p>\n
Package:lvm2 – lvm toolslibdevmapper<\/p>\n
Show LVM version:lvm version<\/p>\n
Create the physical disks:pvcreate \/dev\/hdapvcreate \/dev\/hdbpvcreate \/dev\/hdc1pvcreate \/dev\/hdc2<\/p>\n
Show allocated Physical volumes:pvscanpvdisplaylvm pvs<\/p>\n
Setup a volume group:vgcreate vg_name \/dev\/hda \/dev\/hdb \/dev\/hdc1 \/dev\/hdc2<\/p>\n
Display a volume group:vgdisplaylvm vgs<\/p>\n
[…]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[15],"tags":[],"_links":{"self":[{"href":"https:\/\/mohan.sg\/index.php?rest_route=\/wp\/v2\/posts\/1315"}],"collection":[{"href":"https:\/\/mohan.sg\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/mohan.sg\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/mohan.sg\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/mohan.sg\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1315"}],"version-history":[{"count":1,"href":"https:\/\/mohan.sg\/index.php?rest_route=\/wp\/v2\/posts\/1315\/revisions"}],"predecessor-version":[{"id":1317,"href":"https:\/\/mohan.sg\/index.php?rest_route=\/wp\/v2\/posts\/1315\/revisions\/1317"}],"wp:attachment":[{"href":"https:\/\/mohan.sg\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1315"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/mohan.sg\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1315"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/mohan.sg\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1315"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}