Barak Korren created OVIRT-1490:
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Summary: Simplify oVirt sotrage configuration
Key: OVIRT-1490
URL: https://ovirt-jira.atlassian.net/browse/OVIRT-1490
Project: oVirt - virtualization made easy
Issue Type: Improvement
Components: storage
Reporter: Barak Korren
Assignee: infra
Priority: Highest
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 own.
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 file-systems.
## 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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