Remus: high availability via asynchronous virtual machine replication Export

@inproceedings{citeulike:3855315, abstract = {Allowing applications to survive hardware failure is an expensive undertaking, which generally involves reengineering software to include complicated recovery logic as well as deploying special-purpose hardware; this represents a severe barrier to improving the dependability of large or legacy applications. We describe the construction of a general and transparent high availability service that allows existing, unmodified software to be protected from the failure of the physical machine on which it runs. Remus provides an extremely high degree of fault tolerance, to the point that a running system can transparently continue execution on an alternate physical host in the face of failure with only seconds of downtime, while completely preserving host state such as active network connections. Our approach encapsulates protected software in a virtual machine, asynchronously propagates changed state to a backup host at frequencies as high as forty times a second, and uses speculative execution to concurrently run the active VM slightly ahead of the replicated system state.}, address = {Berkeley, CA, USA}, author = {Cully, Brendan and Lefebvre, Geoffrey and Meyer, Dutch and Feeley, Mike and Hutchinson, Norm and Warfield, Andrew}, booktitle = {NSDI'08: Proceedings of the 5th USENIX Symposium on Networked Systems Design and Implementation}, citeulike-article-id = {3855315}, citeulike-linkout-0 = {http://portal.acm.org/citation.cfm?id=1387601}, isbn = {111-999-5555-22-1}, keywords = {2008, fault-tolerant, transparency, virtualization, xen}, location = {San Francisco, California}, pages = {161--174}, posted-at = {2009-05-16 15:22:24}, priority = {2}, publisher = {USENIX Association}, title = {Remus: high availability via asynchronous virtual machine replication}, url = {http://portal.acm.org/citation.cfm?id=1387601}, year = {2008} }

TY - CONF ID - citeulike:3855315 L3 - citeulike-article-id:3855315 N2 - Allowing applications to survive hardware failure is an expensive undertaking, which generally involves reengineering software to include complicated recovery logic as well as deploying special-purpose hardware; this represents a severe barrier to improving the dependability of large or legacy applications. We describe the construction of a general and transparent high availability service that allows existing, unmodified software to be protected from the failure of the physical machine on which it runs. Remus provides an extremely high degree of fault tolerance, to the point that a running system can transparently continue execution on an alternate physical host in the face of failure with only seconds of downtime, while completely preserving host state such as active network connections. Our approach encapsulates protected software in a virtual machine, asynchronously propagates changed state to a backup host at frequencies as high as forty times a second, and uses speculative execution to concurrently run the active VM slightly ahead of the replicated system state. CY - San Francisco, California SN - 111-999-5555-22-1 AD - Berkeley, CA, USA EP - 174 TI - Remus: high availability via asynchronous virtual machine replication PB - USENIX Association T2 - NSDI'08: Proceedings of the 5th USENIX Symposium on Networked Systems Design and Implementation SP - 161 KW - 2008 KW - fault-tolerant KW - transparency KW - virtualization KW - xen AU - Cully, Brendan AU - Lefebvre, Geoffrey AU - Meyer, Dutch AU - Feeley, Mike AU - Hutchinson, Norm AU - Warfield, Andrew PY - 2008/// UR - http://portal.acm.org/citation.cfm?id=1387601 ER -