Simplified distributed block storage with strong consistency, like in Ceph
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Vitaliy Filippov fa90f287da Release 0.8.3
- Implement a new "vitastor-disk purge" command to remove OSDs with safety checks
- Implement a new "vitastor-cli rm-osd" command to only remove OSD metadata from etcd
- Fix a bug where the monitor could ignore OSD removal and other /osd/stats key changes
- Fix a bug where garbage could be returned when reading objects being written at the same time
- Fix a rare write stall where journal space could be not reclaimed where there
  were no new operations in the flush queue
- Fix a rare peering stall caused by a previous long listing operations queues limiting attempt
- Fix total object count statistic in OSD on object creation
- Add missing offset&len into vitastor-disk dump-journal for big_writes, fix JSON format
- Make vitastor-cli print help on missing command
- Make vitastor-cli translate all '-' to '_' in CLI options
5 months ago
cpp-btree@45e6d1f131 Fix build under GCC 8 1 year ago
csi Release 0.8.3 5 months ago
debian Release 0.8.3 5 months ago
docker Add Dockerfile 2 years ago
docs Fix vitastor-disk purge (now it works) 5 months ago
json11@52a3af664f Fix build under clang and some warnings 1 year ago
mon Recheck OSD tree in monitor on /osd/stats changes 5 months ago
patches Release 0.8.3 5 months ago
rpm Release 0.8.3 5 months ago
src Release 0.8.3 5 months ago
tests Implement vitastor-disk purge command 5 months ago
.dockerignore Add the remaining build script for Debian 2 years ago
.gitignore Add .gitignore 2 years ago
.gitmodules Add cpp-btree and json11 submodules 3 years ago
CMakeLists.txt Release 0.8.3 5 months ago
GPL-2.0.txt Add license texts 3 years ago
LICENSE Add LICENSE 2 years ago Add documentation for the new "vitastor-disk" tool 9 months ago Add documentation for the new "vitastor-disk" tool 9 months ago
VNPL-1.1-RU.txt Add Russian translation of VNPL-1.1 11 months ago
VNPL-1.1.txt Fix typo in VNPL-1.1 11 months ago Use packages/ subdir instead of build/ for Docker package builds 2 years ago Use packages/ subdir instead of build/ for Docker package builds 2 years ago


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The Idea

Make Clustered Block Storage Fast Again.

Vitastor is a distributed block SDS, direct replacement of Ceph RBD and internal SDS's of public clouds. However, in contrast to them, Vitastor is fast and simple at the same time. The only thing is it's slightly young :-).

Vitastor is architecturally similar to Ceph which means strong consistency, primary-replication, symmetric clustering and automatic data distribution over any number of drives of any size with configurable redundancy (replication or erasure codes/XOR).

Vitastor targets SSD and SSD+HDD clusters with at least 10 Gbit/s network, supports TCP and RDMA and may achieve 4 KB read and write latency as low as ~0.1 ms with proper hardware which is ~10 times faster than other popular SDS's like Ceph or internal systems of public clouds.

Vitastor supports QEMU, NBD, NFS protocols, OpenStack, Proxmox, Kubernetes drivers. More drivers may be created easily.

Read more details below in the documentation.

Talks and presentations


Author and License

Copyright (c) Vitaliy Filippov (vitalif [at], 2019+

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All server-side code (OSD, Monitor and so on) is licensed under the terms of Vitastor Network Public License 1.1 (VNPL 1.1), a copyleft license based on GNU GPLv3.0 with the additional "Network Interaction" clause which requires opensourcing all programs directly or indirectly interacting with Vitastor through a computer network and expressly designed to be used in conjunction with it ("Proxy Programs"). Proxy Programs may be made public not only under the terms of the same license, but also under the terms of any GPL-Compatible Free Software License, as listed by the Free Software Foundation. This is a stricter copyleft license than the Affero GPL.

Please note that VNPL doesn't require you to open the code of proprietary software running inside a VM if it's not specially designed to be used with Vitastor.

Basically, you can't use the software in a proprietary environment to provide its functionality to users without opensourcing all intermediary components standing between the user and Vitastor or purchasing a commercial license from the author 😀.

Client libraries (cluster_client and so on) are dual-licensed under the same VNPL 1.1 and also GNU GPL 2.0 or later to allow for compatibility with GPLed software like QEMU and fio.

You can find the full text of VNPL-1.1 in the file VNPL-1.1.txt. GPL 2.0 is also included in this repository as GPL-2.0.txt.