What are the recommendations for number of logical volumes in a HA-LVM volume group on Red Hat High Availability Clusters?
Issue
- When trying to move a service from CONGA interface, error
clurgmgrd: [5522]: HA LVM requires Only one logical volume per volume group
is seen in /var/log/messages file. - Why am I not able to configure multiple Logical Volumes from single VG as cluster resources ? We are created 3 LV on 1 VG.
- Does Cluster support more than one LV on each VG ? How can I configure it?
clurgmgrd[5522]: <notice> Starting stopped service service:SVC_ORASOT
clurgmgrd: [5522]: <err> HA LVM requires Only one logical volume per volume group.
clurgmgrd: [5522]: <err> There are currently 3 logical volumes in vgorasot
clurgmgrd: [5522]: <err> Failing HA LVM start of vgorasot/lvoradata_sot
clurgmgrd[5522]: <notice> start on lvm "LVM_lvoradata_sot" returned 1 (generic error)
clurgmgrd[5522]: <warning> #68: Failed to start service:SVC_ORASOT; return value: 1
clurgmgrd[5522]: <notice> Stopping service service:SVC_ORASOT
- Can multiple LVM logical volumes from single VG be configured as cluster resources ?
- Can we configure multiple Volume Groups to be managed by the HA-LVM Cluster?
- How many logical-volumes can I have in one volume-group under HA-LVM?
- I want to use HA-LVM in my RHEL 5 cluster, but as I understand it, early versions of HA-LVM only permitted 1 logical-volume in the volume-group under HA-LVM control. My volume-groups have between 7 and 15 logical-volumes; would this work?
-
Does RedHat have a recommendation regarding HA-LVM and the number of logical volumes per volume group?
- Should we just have a 1 to 1 mapping for LUN-VG-LV? i.e.:
LUN 1 ---> VolumeGroup01 ---> LogicalVolume01 LUN 2 ---> VolumeGroup02 ---> LogicalVolume02 LUN 3 ---> VolumeGroup03 ---> LogicalVolume03 LUN 4 ---> VolumeGroup04 ---> LogicalVolume04 LUN 5 ---> VolumeGroup05 ---> LogicalVolume05
- Or should we have multiple LVs per VG? i.e.:
LUN 1 ---> VolumeGroup01 ---> LogicalVolume01 LUN 1 ---> VolumeGroup01 ---> LogicalVolume02 LUN 1 ---> VolumeGroup01 ---> LogicalVolume03 LUN 1 ---> VolumeGroup01 ---> LogicalVolume04 LUN 2 ---> VolumeGroup02 ---> LogicalVolume05
Environment
- Red Hat Cluster Suite (RHCS) 4+
- Red Hat Enterprise Linux (RHEL) 5 with the High Availability or Resilient Storage Add Ons
- Red Hat High Availability cluster with 2 or more nodes.
rgmanager
orPacemaker
- HA-LVM
- One or more
lvm
(rgmanager
) orLVM
(Pacemaker
) resources configured in the cluster
- One or more
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