Due to BZ#720883, some Storage Domains attached to Red Hat Enterprise Virtualization(RHEV) environments will have a very small and insufficient lvm metadata size of 1M instead of the expected 100M.
This issue is a head up note for customers running RHEV 2.2 with iSCSI or FC Storage Domains.
This issue will not be observed untill lvm runs out of lvm metadata space, at which point the setup becomes unusable and probably unrecoverable as described in this article RHEV: VMs randomly becoming paused and seeing 'metadata too large for circular buffer' in vdsm.log after executing LVM commands.
That's why we suggest all RHEV 2.2 and migrated in 3.0 customers to check their environments in advance and take preventive actions before running into problems.
- Red Hat Enterprise Virtualization 2.2
- Red Hat Enterprise Virtualization 3.0 that has been migrated from 2.2
- iSCSI or Fibre Channel Data Center
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