I'll try to update the pve-sheepdog for next week. Interesting feature are
"Add MD support", so no more need to have multiples sheepdog daemon for multiple disk now :) - "Add journaling support", fast ssd for journal, fast random write io :) "Major features since 0.5.6 include: - Add MD support Sheepdog can manage multiple disks with one daemon now. The basic idea of MD is RAID-0 like mechanism that distributes sheep objects on the local disks without parity or replicating, which instead relies on the sheepdog's replicated storage to recover the lost objects on the faulty disk. - Add journaling support Yuan reworked the old journal implementation and boosted random write performance of sheep. - Move farm from sheep to collie The farm cluster snapshot in sheep had some drawbacks: 1. After a new node joins the cluster, all former snapshots are not available to be restored. 2. It is hard to backup cluster snapshot to another storage system for disaster-tolerance. 3. It is hard to initialize a new cluster by loading another cluster's snapshot. New implementation is to move "farm" from sheep to collie and save cluster snapshot to a local path. This retains all features from "farm", including: 1. object de-duplication 2. incremental store capability In addition, it also provides ability of: 1. export cluster snapshot to other storage device for backup and disaster-tolerance 2. deploy new cluster by restore from one snapshot of other cluster - Use hash check for vdi check and recovery To reduce network traffic, Sheepdog uses a hash values to compare objects between local and remote. - Shepherd Currently, corosync doesn't have enough scalability and ZooKeeper is not stable under heavy network traffic. This is an initial implementation for yet another cluster coordinator to solve the problem. Shepherd is not mature yet. Don't use it for other than testing purposes. - Add support for a trim command With this support, Sheepdog can remove the objects which are unnecessary for the guest virtual machines. " Alexandre D e rumier Ingénieur Systèmes et Réseaux Fixe : 03 20 68 88 90 Fax : 03 20 68 90 81 45 Bvd du Général Leclerc 59100 Roubaix 12 rue Marivaux 75002 Paris
_______________________________________________ pve-devel mailing list [email protected] http://pve.proxmox.com/cgi-bin/mailman/listinfo/pve-devel
