Re: [linux-lvm] How do I properly backup and restore / on LVM2

[Alan Pek <alan pek db com>]

Hi Folks,

Read through the doc and tried to create
a snapshot lv for rootlv by doing, but failed. 

singmrecfp1001:~ # lvcreate -L 2.5g
-s -n rsnap rootvg
  Path required for Logical Volume
"rootvg"
  The origin name should include
the volume group.
  lvcreate: Create a logical volume
lvcreate
        [-A|--autobackup
{y|n}]
        [--addtag
Tag]
        [--alloc
AllocationPolicy]
        [-C|--contiguous
{y|n}]
        [-d|--debug]
        [-h|-?|--help]
        [-i|--stripes
Stripes [-I|--stripesize StripeSize]]
        {-l|--extents
LogicalExtentsNumber |
         -L|--size
LogicalVolumeSize[kKmMgGtT]}
        [-M|--persistent
{y|n}] [--major major] [--minor minor]
        [-m|--mirrors
Mirrors]
        [-n|--name
LogicalVolumeName]
        [-p|--permission
{r|rw}]
        [-r|--readahead
ReadAheadSectors]
        [-R|--regionsize
MirrorLogRegionSize]
        [-t|--test]
        [--type
VolumeType]
        [-v|--verbose]
        [-Z|--zero
{y|n}]
        [--version]
        VolumeGroupName
[PhysicalVolumePath...]

lvcreate -s|--snapshot
        [-c|--chunksize]
        [-A|--autobackup
{y|n}]
        [--addtag
Tag]
        [--alloc
AllocationPolicy]
        [-C|--contiguous
{y|n}]
        [-d|--debug]
        [-h|-?|--help]
        [-i|--stripes
Stripes [-I|--stripesize StripeSize]]
        {-l|--extents
LogicalExtentsNumber |
         -L|--size
LogicalVolumeSize[kKmMgGtT]}
        [-M|--persistent
{y|n}] [--major major] [--minor minor]
        [-n|--name
LogicalVolumeName]
        [-p|--permission
{r|rw}]
        [-r|--readahead
ReadAheadSectors]
        [-t|--test]
        [-v|--verbose]
        [--version]
        OriginalLogicalVolume[Path]
[PhysicalVolumePath...]


singmrecfp1001:~ # lvcreate -L 2.5g -s -n rsnap /dev/mapper/rootvg-rootlv
  Volume group "mapper"
doesn't exist

singmrecfp1001:~ #  lvcreate -L
2.5g -s -n rsnap /dev/md1
  "/dev/md1": Invalid
path for Logical Volume
  The origin name should include
the volume group.
  lvcreate: Create a logical volume

lvcreate
        [-A|--autobackup
{y|n}]
        [--addtag
Tag]
        [--alloc
AllocationPolicy]
        [-C|--contiguous
{y|n}]
        [-d|--debug]
        [-h|-?|--help]
        [-i|--stripes
Stripes [-I|--stripesize StripeSize]]
        {-l|--extents
LogicalExtentsNumber |
         -L|--size
LogicalVolumeSize[kKmMgGtT]}
        [-M|--persistent
{y|n}] [--major major] [--minor minor]
        [-m|--mirrors
Mirrors]
        [-n|--name
LogicalVolumeName]
        [-p|--permission
{r|rw}]
        [-r|--readahead
ReadAheadSectors]
        [-R|--regionsize
MirrorLogRegionSize]
        [-t|--test]
        [--type
VolumeType]
        [-v|--verbose]
        [-Z|--zero
{y|n}]
        [--version]
        VolumeGroupName
[PhysicalVolumePath...]

lvcreate -s|--snapshot
        [-c|--chunksize]
        [-A|--autobackup
{y|n}]
        [--addtag
Tag]
        [--alloc
AllocationPolicy]
        [-C|--contiguous
{y|n}]
        [-d|--debug]
        [-h|-?|--help]
        [-i|--stripes
Stripes [-I|--stripesize StripeSize]]
        {-l|--extents
LogicalExtentsNumber |
         -L|--size
LogicalVolumeSize[kKmMgGtT]}
        [-M|--persistent
{y|n}] [--major major] [--minor minor]
        [-n|--name
LogicalVolumeName]
        [-p|--permission
{r|rw}]
        [-r|--readahead
ReadAheadSectors]
        [-t|--test]
        [-v|--verbose]
        [--version]
        OriginalLogicalVolume[Path]
[PhysicalVolumePath...]


singmrecfp1001:~ #

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