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In DAFS, replace uses of the VLockPartition_r partition-level locks with the approprivate VLockVolume*NB volume-level locks (and sometimes FSYNC_VerifyCheckout). This allows for greater parallelization of volserver attachment / volume creation, for volume operations to occur during salvages, and for multiple salvages on a single partition to occur simultaneously. More architectural details of volume-level locks can be found in the changes to doc/arch/dafs-overview.txt. Change-Id: I4e8ef4c864002d7e7c976691824c53dfa9cfaf91 Reviewed-on: http://gerrit.openafs.org/1406 Tested-by: Andrew Deason <adeason@sinenomine.net> Reviewed-by: Derrick Brashear <shadow@dementia.org> Tested-by: Derrick Brashear <shadow@dementia.org> |
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| .. | ||
| arch-overview.h | ||
| dafs-fsa.dot | ||
| dafs-overview.txt | ||
| dafs-vnode-fsa.dot | ||
| fssync.txt | ||
| README | ||
- dafs-fsa.dot is a description of the finite-state machine for volume
states in the Demand Attach fileserver
- dafs-vnode-fsa.dot is a description of the finite-state machine
for vnodes in the Demand Attach fileserver.
Both diagrams are in Dot (http://www.graphviz.org) format,
and can be converted to graphics formats via an
an invocation like:
dot -Tsvg dafs-fsa.dot > dafs-fsa.svg