0.13 - if all goes well...tomorrow stable tree - please look at -stable to see what is missing (bugfixes) - esp. regressions from 0.12 - looking for dedicated stable maintainer/release manager - pick this discussion up next week qed/qcow2 - increase concurrency, performance - threading vs state machine - avi doesn't like qed reliance on fsck - undermines value of error checking (errors become normal) - prefer preallocation and fsck just checks for leaked blocks - just load and validate metadata - options for correctness are - fsync at every data allocation - leak data blocks - scan - qed is pure statemachine - state on stack, control flow vs function call - common need to separate handle requests concurrently, issue async i/o - most disk formats have similar metadata and methods - lookup cluster, read/write data - qed could be a path to cleaning up other formats (reusing) - need an incremental way to improve qcow2 performance - threading doesn't seem to be the way to achieve this (incrementally) - coroutines vs. traditional threads discussion - parallel (and locking) vs few well-defined preemption points - plan for qed...attempt to merge in 0.14 - online fsck support is all that's missing - add bdrv check callback, look for new patch series over the next week - back to list with discussion... -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
