Barak Korren created OVIRT-1490:
Summary: Simplify oVirt sotrage configuration
Project: oVirt - virtualization made easy
Issue Type: Improvement
Reporter: Barak Korren
Today's outage was a clear reminder that our current storage configuration does not
serve us well. We hardly know how to debug it, it seems to not be resistant to the very
issues it was supposed to protect against and introduce potential failure scenarios of its
I suggest we implement a new storage layout that meets the following criteria:
# Ultimate simplicity at the lower level of the stack. More specifically:
## The storage severs should be simple NFS or iSCSI servers. No DRBD and no exotic
## Only simple storage will be presented to oVirt for use as storage domains
# Separation of resources between critical services - The 'Jenkins" master for
e.g. should not share resources with the "resources" server or anything
else.The separation should hold true down to the physical spindle level.
# Duplication of services and use of local storage where possible - this is a longer term
effort - but we have some low hanging fruits here like artifactory, where simple
DNS/LB-based fail-over between two identical hosts would probably suffice.
# Complexity only where needed and up the stack. For example we can just have the storage
for Jenkins be mirrored at the VM level with fail-over to a backup VM.
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